JP3961548B2 - Acid oil-in-water emulsified composition - Google Patents

Acid oil-in-water emulsified composition Download PDF

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JP3961548B2
JP3961548B2 JP2006127203A JP2006127203A JP3961548B2 JP 3961548 B2 JP3961548 B2 JP 3961548B2 JP 2006127203 A JP2006127203 A JP 2006127203A JP 2006127203 A JP2006127203 A JP 2006127203A JP 3961548 B2 JP3961548 B2 JP 3961548B2
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egg yolk
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尚人 工藤
義信 中島
佐藤  誠
将勝 杉浦
浩明 山口
司 宮谷
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Kao Corp
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本発明は、特にマヨネーズ類、ドレッシング類に好適に使用される酸性水中油型乳化組成物に関する。   The present invention relates to an acidic oil-in-water emulsified composition that is suitably used particularly for mayonnaises and dressings.

近年、ジグリセリドが肥満防止作用、体重増加抑制作用等を有することが明らかにされるに至り(特許文献1)、これを各種食品に配合する試みがなされている。そして、ジグリセリドを高濃度に含むグリセリド混合物を油相に用いれば、脂肪量を低減した場合においても豊かな脂肪感を有し、風味が良好な食用水中油型乳化組成物が得られることが報告されている(特許文献2)。   In recent years, it has been clarified that diglyceride has an obesity-preventing action, a weight gain-inhibiting action, and the like (Patent Document 1), and attempts have been made to blend this into various foods. And if a glyceride mixture containing diglyceride at a high concentration is used in the oil phase, it is reported that an edible oil-in-water emulsion composition having a rich fat feeling and good flavor can be obtained even when the amount of fat is reduced. (Patent Document 2).

しかしながら、ジグリセリドを高濃度で含有する油相を卵黄で乳化したマヨネーズ等の酸性水中油型乳化組成物を保存すると、亀裂の発生、離水の発生、更に光沢の減少等、外観で問題が生じることが判明した。これを解決するために、例えば酸性水中油型乳化組成物中のリゾリン脂質含量を調整する技術が報告されている(特許文献3)。   However, storage of acidic oil-in-water emulsified compositions such as mayonnaise emulsified with an egg yolk oil phase containing a high concentration of diglyceride may cause problems in appearance such as cracking, water separation, and gloss reduction. There was found. In order to solve this, for example, a technique for adjusting the lysophospholipid content in an acidic oil-in-water emulsion composition has been reported (Patent Document 3).

一方、マヨネーズ等の酸性水中油型乳化組成物を製造する際、乳化装置から配管を通して充填機に移送するときや、容器に充填するときに加圧シェアが発生し、酸性水中油型乳化組成物の粘度等の物性が変化するという問題がある。更に、プラスチック製のマヨネーズ容器に充填したマヨネーズ等の酸性水中油型乳化組成物は、使用するたびに押し圧が加わるため、乳化破壊、離水、離油等の品質低下が生じやすい。そのため、酸性水中油型乳化組成物には、製造、充填及び使用時に発生する加圧シェアに対し、安定性を有することが必要である。   On the other hand, when an acidic oil-in-water emulsion composition such as mayonnaise is produced, a pressure share is generated when it is transferred from an emulsifier to a filling machine through a pipe or when it is filled in a container, and the acidic oil-in-water emulsion composition There is a problem that the physical properties such as the viscosity change. Furthermore, acidic oil-in-water type emulsion compositions such as mayonnaise filled in a plastic mayonnaise container are subject to depressurization every time they are used, so that quality deterioration such as emulsion breakage, water separation and oil separation tends to occur. Therefore, it is necessary for the acidic oil-in-water emulsion composition to have stability against the pressure share generated during production, filling and use.

前述のリゾリン脂質の含有量を調整して外観を改善する技術は、単に静置保存した場合には有効であるが、加圧シェアが存在するばあいには効果が十分であるとは言えなかった。
特開平4−300828号公報 特開平3−8431号公報 特開2001−138号公報
The above-mentioned technology for improving the appearance by adjusting the content of lysophospholipid is effective when it is stored at rest, but it cannot be said that the effect is sufficient when a pressure share exists. It was.
Japanese Unexamined Patent Publication No. 4-300828 Japanese Patent Laid-Open No. 3-8431 JP 2001-138 A

本発明の目的は、製造時及び使用時に発生する加圧シェア負荷に対して優れた耐性を有し、粘度低下等の物性変化が少なく、離水等の外観変化がない、ジグリセリドを高濃度で含有する酸性水中油型乳化組成物を提供することにある。   The object of the present invention is to have excellent resistance to the pressure shear load generated during production and use, with little change in physical properties such as viscosity reduction, no appearance change such as water separation, and high concentration of diglyceride An acidic oil-in-water emulsion composition is provided.

本発明者は、ジグリセリドを高濃度で含む油相及び卵黄を含有する酸性水中油型乳化組成物に、更に水溶性大豆多糖類を加えると、リゾリン脂質の含有量を調整することなしに外観が良好であって、製造時の配管移送シェア、充填シェア及び使用時の押し圧シェア等の加圧シェア負荷に対して極めて安定な品質劣化を起こさない酸性水中油型乳化組成物が得られることを見出し、本発明を完成した。   The present inventor added a water-soluble soybean polysaccharide to an acidic oil-in-water emulsified composition containing an oil phase containing high concentration of diglyceride and egg yolk, and the appearance is not adjusted without adjusting the content of lysophospholipid. It is possible to obtain an acidic oil-in-water emulsified composition that is good and that does not cause extremely stable quality degradation against pressure share loads such as pipe transfer share during manufacture, filling share, and pressure share during use. The headline and the present invention were completed.

本発明は、(B)卵黄を含有する水相を、攪拌、せん断、混合、均質及び混練から選択される1又は2以上の処理をして当該処理前に比べて粘度を50%以上上昇させるか又は卵黄蛋白溶解度を5〜60%低下させ、その後(C)ラムノース、フコース、アラビノース、キシロース、グルコース及びウロン酸から選ばれる糖を構成糖として含む水溶性大豆多糖類を分散させた(A)ジグリセリド含量が30重量%以上である油脂を添加することによる酸性水中油型乳化組成物の製造方法を提供するものである。
The present invention, (B) increasing the water phase containing the egg yellow and stirring, shear mixing, the viscosity more than 50% by one or more treatment selected from homogeneous and kneading than before the treatment Or the yolk protein solubility is decreased by 5 to 60%, and then (C) a water-soluble soybean polysaccharide containing a sugar selected from rhamnose, fucose, arabinose, xylose, glucose and uronic acid as a constituent sugar is dispersed (A) ) A method for producing an acidic oil-in-water emulsified composition by adding a fat having a diglyceride content of 30% by weight or more.

本発明の酸性水中油型乳化組成物は、風味、外観、安定性、食感に優れ、製造時、使用時の加圧シェア負荷に対して顕著な耐性を有する為、工業的生産に適している。   The acidic oil-in-water emulsified composition of the present invention is excellent in flavor, appearance, stability and texture, and has a remarkable resistance to a pressure share load during production and use, and is therefore suitable for industrial production. Yes.

マヨネーズ類、ドレッシング類等の酸性水中油型乳化組成物は、冷蔵庫等の低温で保存された場合でも、結晶化、固化が起こらないように、低融点油脂を使用することが好ましい。本発明において用いるジグリセリドも、低融点であることが好ましい。具体的には、構成脂肪酸残基の炭素数が8〜24、特に16〜22であることが好ましい。また不飽和脂肪酸残基の量は、全脂肪酸残基の55重量%(以下単に%と記載する)以上が好ましく、更に70〜100%、特に90〜100%、殊更93〜98%であるのが好ましい。ジグリセリドは、植物油、動物油等とグリセリンとのエステル交換反応、又は上記油脂由来の脂肪酸とグリセリンとのエステル化反応等任意の方法により得られる。反応方法は、アルカリ触媒等を用いた化学反応法、リパーゼ等の油脂加水分解酵素を用いた生化学反応法のいずれでもよい。   The acidic oil-in-water emulsified compositions such as mayonnaises and dressings preferably use low-melting oils and fats so that crystallization and solidification do not occur even when stored at a low temperature such as a refrigerator. The diglyceride used in the present invention also preferably has a low melting point. Specifically, the carbon number of the constituent fatty acid residue is preferably 8 to 24, particularly 16 to 22. The amount of unsaturated fatty acid residues is preferably 55% by weight (hereinafter simply referred to as%) or more of the total fatty acid residues, more preferably 70 to 100%, particularly 90 to 100%, and particularly 93 to 98%. Is preferred. Diglyceride can be obtained by any method such as an ester exchange reaction between vegetable oil, animal oil or the like and glycerin, or an esterification reaction between fatty acid derived from the above fats and glycerin. The reaction method may be either a chemical reaction method using an alkali catalyst or the like, or a biochemical reaction method using an oil and fat hydrolase such as lipase.

本発明の酸性水中油型乳化組成物において、成分(A)油脂中のジグリセリド含量は、脂質代謝改善食品又は体脂肪蓄積抑制食品としての有効性、工業的生産性の観点から30%以上であり、好ましくは35〜100%、更に50〜99.9%、特に70〜95%であるのが望ましい。油脂には、ジグリセリド以外に、トリグリセリド、モノグリセリド、遊離脂肪酸等を含有させることができる。   In the acidic oil-in-water emulsion composition of the present invention, the diglyceride content in the component (A) fat is 30% or more from the viewpoint of effectiveness as a food for improving lipid metabolism or food for suppressing body fat accumulation, and industrial productivity. , Preferably 35 to 100%, more preferably 50 to 99.9%, and particularly preferably 70 to 95%. Oils and fats can contain triglycerides, monoglycerides, free fatty acids and the like in addition to diglycerides.

油脂中のモノグリセリドの含量は、乳化性、風味、工業生産性の点から5%以下であるのが好ましく、更に0〜2%、特に0.1〜1.5%であるのが良い。モノグリセリドの構成脂肪酸は、工業的生産性の点でジグリセリドの構成脂肪酸と同じであるのが好ましい。   The content of monoglyceride in fats and oils is preferably 5% or less from the viewpoints of emulsifying properties, flavor and industrial productivity, more preferably 0 to 2%, and particularly preferably 0.1 to 1.5%. The constituent fatty acid of the monoglyceride is preferably the same as the constituent fatty acid of the diglyceride from the viewpoint of industrial productivity.

油脂中の遊離脂肪酸(塩)の含量は、乳化性、風味、工業的生産性の点で1%以下であるのが好ましく、更に0〜0.5%、特に0.05〜0.2%であるのが良い。   The content of free fatty acid (salt) in the fat is preferably 1% or less, more preferably 0 to 0.5%, particularly 0.05 to 0.2% in terms of emulsifying properties, flavor and industrial productivity. It is good to be.

油脂中のトリグリセリドの含量は乳化性、風味、生理効果、工業的生産性の点で70%以下であるのが好ましく、更に0〜65%、特に0.1〜50%、殊更3.3%〜29.85%であるのが望ましい。   The content of triglyceride in fats and oils is preferably 70% or less from the viewpoint of emulsifying property, flavor, physiological effect, and industrial productivity, and is further 0 to 65%, particularly 0.1 to 50%, especially 3.3%. It is desirable that it is ˜29.85%.

本発明に用いる成分(B)卵黄は、生、凍結、粉末、加塩、加糖等任意の形態でよく、また卵白を含んだ全卵の形態で配合してもよい。組成物中の卵黄の含有量は、風味向上の観点から、液状卵黄換算で5〜20%であるのが好ましく、更に好ましくは7〜17%、特に好ましくは8〜15%、最も好ましくは10〜15%である。
また、卵黄は後述の酵素処理卵黄を用いるのが好ましい。
The component (B) egg yolk used in the present invention may be in any form such as raw, frozen, powdered, salted, and sweetened, or may be formulated in the form of whole egg including egg white. The content of egg yolk in the composition is preferably 5 to 20% in terms of liquid egg yolk, more preferably 7 to 17%, particularly preferably 8 to 15%, and most preferably 10 from the viewpoint of improving the flavor. ~ 15%.
The egg yolk is preferably an enzyme-treated egg yolk described later.

本発明に用いる成分(C)水溶性大豆多糖類は、ラムノース、フコース、アラビノース、キシロース、ガラクトース、グルコース、ウロン酸等からなる多糖類のことである。本発明に使用する(C)は、大豆から豆腐を製造するときの「オカラ」や、大豆から蛋白質を抽出した残渣等を原料として、アルカリ処理、加水分解処理等を施して製造される。例えば、大豆から豆乳を分離した残渣(オカラ)を親水性有機溶媒を含むアルカリ性水溶液で抽出し、固形物を採取する方法(特公昭60−31841号公報)、大豆皮から温水又はアルカリ水溶液で抽出して製造する方法(特開昭60−146828号公報)、大豆植物繊維を微細化し、繊維中の蛋白質を分解した後、水溶性多糖を分画し製造する方法(特開平3−067595号公報)、蛋白質を含有する水溶性大豆食物繊維を蛋白質の等電点付近の酸性条件下で加水分解して製造する方法(特開平3−236759号公報)等が挙げられる。
また、市販品としては、「ソヤファイブ」、「ソヤアップ」(不二製油(株))、「SM−700」(三栄源エフ・エフ・アイ(株))等が挙げられる。
The component (C) water-soluble soybean polysaccharide used in the present invention is a polysaccharide comprising rhamnose, fucose, arabinose, xylose, galactose, glucose, uronic acid and the like. (C) used in the present invention is produced by applying alkali treatment, hydrolysis treatment, etc., using “Okara” when producing tofu from soybeans, residues obtained by extracting proteins from soybeans, and the like as raw materials. For example, a method of extracting a residue (okara) obtained by separating soy milk from soybeans with an alkaline aqueous solution containing a hydrophilic organic solvent and collecting solids (Japanese Patent Publication No. 60-31841), extracting from soybean hulls with warm water or an alkaline aqueous solution And a method for producing water-soluble polysaccharide by fractionating soybean plant fiber and decomposing protein in the fiber (Japanese Patent Laid-Open No. 3-067595). ), A method for producing water-soluble soybean dietary fiber containing protein under hydrolysis under acidic conditions near the isoelectric point of the protein (JP-A-3-236759), and the like.
Examples of commercially available products include “Soya Five”, “Soya Up” (Fuji Oil Co., Ltd.), “SM-700” (San-Eigen FFI Co., Ltd.) and the like.

本発明において、酸性水中油型乳化組成物中の(C)水溶性大豆多糖類の含有量は、シェアに対する安定性、外観、食感等の点から0.01〜10%が好ましく、0.02〜5%がより好ましく、特に0.05〜3%、特に0.1〜1%であるのが望ましい。   In the present invention, the content of the (C) water-soluble soybean polysaccharide in the acidic oil-in-water emulsion composition is preferably 0.01 to 10% from the viewpoint of stability to the share, appearance, texture, etc. It is more preferably 02 to 5%, particularly 0.05 to 3%, and particularly preferably 0.1 to 1%.

また、本発明の酸性水中油型乳化組成物において、風味及び外観の点で含有する全リン脂質中のリゾリン脂質の重量比率(以下、リゾ比率と記載する)がリン量基準で15%以上であるのが好ましく、より好ましくは25〜75%、特に29〜65%が好ましい。リゾリン脂質は、その一部又は全部が卵黄や大豆由来であることが好ましく、卵黄由来であることが特に好ましい。   Further, in the acidic oil-in-water emulsion composition of the present invention, the weight ratio of lysophospholipid in the total phospholipid contained in terms of flavor and appearance (hereinafter referred to as lyso ratio) is 15% or more based on the amount of phosphorus. It is preferable that it is present, more preferably 25 to 75%, particularly 29 to 65%. A part or all of the lysophospholipid is preferably derived from egg yolk or soybean, and particularly preferably derived from egg yolk.

またリゾリン脂質の一部又は全部が酵素処理卵黄であることが好ましい。卵黄の酵素処理に用いる酵素としては、エステラーゼ、リパーゼ、ホスホリパーゼが好ましく、リパーゼ、ホスホリパーゼがより好ましく、ホスホリパーゼが特に好ましい。ホスホリパーゼの中でも、ホスホリパーゼA、すなわちホスホリパーゼA1及び/又はA2が最も好ましい。 Moreover, it is preferable that a part or all of lysophospholipid is enzyme-treated egg yolk. As the enzyme used for the enzyme treatment of egg yolk, esterase, lipase and phospholipase are preferable, lipase and phospholipase are more preferable, and phospholipase is particularly preferable. Among the phospholipases, phospholipase A, that is, phospholipase A 1 and / or A 2 is most preferable.

酵素処理条件は、卵黄の全部に酵素処理卵黄を用いる場合、リゾ比率が15%以上となるような条件を適宜選択すればよい。具体的には、酵素添加量は、酵素活性が10000IU/mLの場合、卵黄に対して0.0001〜0.1%、特に0.001〜0.01が好ましい。反応温度は20〜60℃、特に30〜55℃が好ましい。反応時間は1時間〜30時間、特に5時間〜25時間が好ましい。また卵黄の一部に酵素処理卵黄を用いる場合、酵素未処理卵黄と酵素処理卵黄の合計のリゾ比率が上記範囲となるように酵素処理条件を選択すればよい。かかる酵素処理は、各原料を混合して乳化処理する以前の段階で行うことが好ましい。   The enzyme treatment conditions may be appropriately selected such that the lyso ratio is 15% or more when the enzyme-treated egg yolk is used for the whole egg yolk. Specifically, when the enzyme activity is 10,000 IU / mL, the enzyme addition amount is preferably 0.0001 to 0.1%, particularly preferably 0.001 to 0.01 with respect to the egg yolk. The reaction temperature is preferably 20 to 60 ° C, particularly preferably 30 to 55 ° C. The reaction time is preferably 1 hour to 30 hours, particularly 5 hours to 25 hours. When enzyme-treated egg yolk is used as part of the egg yolk, the enzyme treatment conditions may be selected so that the total lyso ratio of the enzyme-untreated egg yolk and the enzyme-treated egg yolk falls within the above range. Such an enzyme treatment is preferably performed before mixing and emulsifying each raw material.

本発明の酸性水中油型乳化組成物において、更に血中コレステロール低下作用を有する植物ステロール類を含有させてもよい。ジグリセリドと植物ステロール類との併用により、血中コレステロール低下作用は、相乗的に高まり、脂質代謝改善食品としての有用性を更に高めることができる。植物ステロール類としては、例えばα−シトステロール、β−シトステロール、スチグマステロール、エルゴステロール、カンペステロール等が挙げられる。またこれらの脂肪酸エステル、フェルラ酸エステル、配糖体を用いることもできる。本発明においては、これらを一種以上用いることができる。植物ステロール類として、植物ステロール及び/又は、植物ステロールエステルを用いるのが好ましい。酸性水中油型乳化組成物中の、植物ステロール類の含有量は、1.2〜10%、特に2〜5%であるのが好ましい。   The acidic oil-in-water emulsion composition of the present invention may further contain plant sterols having a blood cholesterol lowering effect. The combined use of diglycerides and plant sterols synergistically increases blood cholesterol lowering action, and can further enhance the usefulness as a food for improving lipid metabolism. Examples of plant sterols include α-sitosterol, β-sitosterol, stigmasterol, ergosterol, campesterol and the like. These fatty acid esters, ferulic acid esters and glycosides can also be used. In the present invention, one or more of these can be used. As plant sterols, it is preferable to use plant sterols and / or plant sterol esters. The content of plant sterols in the acidic oil-in-water emulsion composition is preferably 1.2 to 10%, particularly preferably 2 to 5%.

本発明の酸性水中油型乳化組成物の油相は、(A)ジグリセリド含有油脂からなるが、必要に応じて、植物ステロール類、その他の油性成分を配合することができる。   The oil phase of the acidic oil-in-water emulsified composition of the present invention comprises (A) a diglyceride-containing oil and fat, and may contain plant sterols and other oil components as necessary.

本発明の酸性水中油型乳化組成物の水相には、水、米酢、酒粕酢、リンゴ酢、ブドウ酢、穀物酢、合成酢等の食酢、食塩、グルタミン酸ソーダ等の調味料、砂糖、水飴等の糖類、酒、みりん等の呈味量、各種ビタミン、クエン酸等の有機酸及びその塩、香辛料、レモン果汁等の各種野菜又は果実の搾汁液、キサンタンガム、ジェランガム、グァーガム、タマリンドガム、カラギーナン、ペクチン、トラガントガム等の増粘多糖類、馬鈴薯澱粉等の澱粉類、それらの分解物及びそれらを化工処理した澱粉類、ショ糖脂肪酸エステル、ソルビタン脂肪酸エステル、ポリグリセリン脂肪酸エステル、ポリソルベート等の合成乳化剤、大豆タンパク質、乳タンパク質、小麦タンパク質等、あるいはこれらタンパク質の分離物や分解物等のタンパク質系乳化剤、レシチン又はその酵素分解物等の天然系乳化剤、牛乳等の乳製品、各種リン酸塩等を配合することができる。本発明においては、目的とする組成物の粘度、物性等に応じて、これらを適宜配合できる。   In the aqueous phase of the acidic oil-in-water emulsion composition of the present invention, water, rice vinegar, sake lees vinegar, apple vinegar, grape vinegar, grain vinegar, synthetic vinegar and other vinegar, salt, glutamic acid soda seasoning, sugar, Sugar, such as syrup, taste, such as liquor, mirin, various vitamins, organic acids such as citric acid and their salts, spices, juices of various vegetables such as lemon juice, xanthan gum, gellan gum, guar gum, tamarind gum, Synthesis of thickening polysaccharides such as carrageenan, pectin, and tragacanth gum, starches such as potato starch, decomposed products thereof and modified starches, sucrose fatty acid ester, sorbitan fatty acid ester, polyglycerin fatty acid ester, polysorbate, etc. Emulsifiers, soy protein, milk protein, wheat protein, etc., or protein systems such as separated or decomposed products of these proteins Agents, natural emulsifiers, such as lecithin or enzymatically decomposed products, dairy milk, etc., various phosphates and the like can be blended. In the present invention, these can be appropriately blended according to the viscosity, physical properties and the like of the target composition.

かかる水相のpHは、風味と保存性の観点から、2〜6、特に3〜5が好ましい。水相のpH調整には、上記した食酢、有機酸、有機酸の塩類、果汁類等の酸味料を使用できる。   The pH of the aqueous phase is preferably 2 to 6, particularly 3 to 5 from the viewpoints of flavor and storage stability. To adjust the pH of the aqueous phase, acidulants such as vinegar, organic acids, salts of organic acids, fruit juices and the like can be used.

油相と水相の重量比は、10/90〜80/20であるのが好ましく、更に20/80〜75/25、特に35/65〜70/30であるのが望ましい。
本発明の酸性水中油型乳化組成物としては、例えば日本農林規格(JAS)で定義されるドレッシング、半固体状ドレッシング、乳化液状ドレッシング、マヨネーズ、サラダドレッシング、フレンチドレッシング等が挙げられるが、特にこれらに限定されるものではなく、広くマヨネーズ類、マヨネーズ様食品、ドレッシング類、ドレッシング様食品といわれるものが該当する。
The weight ratio of the oil phase to the aqueous phase is preferably 10/90 to 80/20, more preferably 20/80 to 75/25, and particularly preferably 35/65 to 70/30.
Examples of the acidic oil-in-water emulsified composition of the present invention include dressings, semi-solid dressings, emulsified liquid dressings, mayonnaise, salad dressings, French dressings and the like defined by the Japanese Agricultural Standards (JAS). It is not limited to, but widely mayonnaises, mayonnaise-like foods, dressings and dressing-like foods.

本発明の酸性水中油型乳化組成物は、例えば以下の方法により製造することができる。まず(A)ジグリセリド含有油脂、植物ステロール等の油性成分を混合して油相を調製する。また、(B)卵黄、(C)水溶性大豆多糖類、その他の水溶性原料を混合して水相を調製する。該水相に該油相を添加し、必要により予備乳化を行い、均質化することにより、酸性水中油型乳化組成物を得ることができる。均質機としては、例えばマウンテンゴウリン、マイクロフルイダイザー等の高圧ホモジナイザー、超音波式乳化機、コロイドミル、アジホモミキサー、マイルダー等が挙げられる。   The acidic oil-in-water emulsion composition of the present invention can be produced, for example, by the following method. First, (A) oily components such as diglyceride-containing fats and oils and plant sterols are mixed to prepare an oil phase. Moreover, (B) egg yolk, (C) water-soluble soybean polysaccharide, and other water-soluble raw materials are mixed to prepare an aqueous phase. An acidic oil-in-water emulsion composition can be obtained by adding the oil phase to the water phase, pre-emulsifying as necessary, and homogenizing. Examples of the homogenizer include a high-pressure homogenizer such as mountain gourin and microfluidizer, an ultrasonic emulsifier, a colloid mill, an azimuth homomixer, and a milder.

本発明において、更に製造時及び使用時に発生する加圧シェア負荷に対する耐性向上について種々検討したところ、酸性水中油型乳化組成物を製造する際に、卵黄を含有する水相を調製した後であって油相を添加する前に機械的処理し、粘度を一定範囲以上に上昇させるか又は卵黄蛋白の溶解度を一定範囲に低下させることにより、その後乳化させて得られた酸性水中油型乳化物の粘度が増大し、加圧シェア耐性が更に向上することを見出した。   In the present invention, various investigations were made on the improvement in resistance to the pressure shear load generated during production and use. As a result, when an acidic oil-in-water emulsion composition was produced, an aqueous phase containing egg yolk was prepared. Of the acidic oil-in-water emulsion obtained by subsequent emulsification by mechanical treatment before adding the oil phase and increasing the viscosity above a certain range or decreasing the solubility of egg yolk protein to a certain range. It has been found that the viscosity increases and the pressure shear resistance is further improved.

従って、(B)卵黄を含有する水相を、当該処理前に比べて粘度を50%以上上昇させるか又は卵黄蛋白溶解度を5〜60%低下させるように機械的処理した後、成分(A)を含む油相を添加することにより酸性水中油型乳化物を製造するのが好ましい。成分(C)は、油相と共に配合するのが、作業性の点で好ましい。   Therefore, after (B) the egg yolk-containing aqueous phase is mechanically treated so that the viscosity is increased by 50% or more or the yolk protein solubility is decreased by 5 to 60% as compared to before the treatment, the component (A) It is preferable to produce an acidic oil-in-water emulsion by adding an oil phase containing. Component (C) is preferably blended with the oil phase from the viewpoint of workability.

ここで機械的処理としては、攪拌、せん断、混合、均質、混練などが挙げられる。このうち、簡便性の点から、攪拌処理、特に強攪拌処理が好ましい。攪拌処理の強度はせん断エネルギーで表され、35000〜2000000m/sが好ましく、特に70000〜1000000m/sが好ましい。尚、ここでいうせん断エネルギーは、攪拌による水相仕込み容量当りの循環容量(=攪拌により水相が槽内で循環した回数、以下「循環回数」という。)と「撹拌翼の最外周速」の積にて定義する(技術情報協会発行「新しい攪拌技術の実際」(1989))。   Here, examples of the mechanical treatment include stirring, shearing, mixing, homogenization, and kneading. Among these, from the viewpoint of simplicity, stirring treatment, particularly strong stirring treatment is preferable. The strength of the stirring treatment is expressed in terms of shear energy, preferably 35,000 to 2,000,000 m / s, particularly preferably 70,000 to 1,000,000 m / s. The shear energy here refers to the circulation capacity per volume of the aqueous phase charged by stirring (= the number of times the water phase has circulated in the tank by stirring, hereinafter referred to as “the number of circulations”) and “the outermost peripheral speed of the stirring blade”. (Technical Information Association published "Actual New Stirring Technique" (1989)).

また、生産性を考慮すると、攪拌槽で攪拌処理する場合に、毎回槽を洗浄する必要はなく前バッチの乳化物が残存した状態で、卵黄等の次バッチの原料を添加してよい。
シェアストレス耐性、十分な粘度と長期の乳化安定化効果を得る点から、この処理により、当該処理前に比べて粘度を50%以上上昇させるか、卵黄蛋白溶解度を5〜60%低下させるのが好ましい。更に、粘度を100〜500%上昇させるのが好ましく、特に150〜300%上昇させるのが好ましい。また好ましい卵黄蛋白溶解度の低下率は10〜30%である。
In consideration of productivity, in the case of stirring in a stirring tank, it is not necessary to wash the tank every time, and the raw material of the next batch such as egg yolk may be added with the emulsion of the previous batch remaining.
From the point of obtaining shear stress resistance, sufficient viscosity, and long-term emulsion stabilization effect, this treatment may increase the viscosity by 50% or more or reduce the yolk protein solubility by 5 to 60% compared to before the treatment. preferable. Furthermore, it is preferable to increase the viscosity by 100 to 500%, and it is particularly preferable to increase the viscosity by 150 to 300%. Moreover, the preferable fall rate of egg yolk protein solubility is 10 to 30%.

機械的処理によると、上記粘度上昇と卵黄蛋白溶解度低下の両者が同時に得られ、かつ風味も保持されるので特に好ましい。従って、機械的処理条件を操作することにより得られる酸性水中油型乳化物の物性(シェアストレス耐性、粘度、長期乳化安定性及び風味)を制御できる。当該機械的処理としては、強攪拌処理、特に各種の攪拌翼を備えた攪拌槽によるのが好ましい。攪拌翼の回転方向は問わない。また、他の機械としては、例えばマウンテンゴウリン、マイクロフルイダイザー等の高圧ホモジナイザー、超音波式乳化機、コロイドミル、ラインミル、ホモミキサー、アジホモミキサー、マイルダー等が挙げられる。なお、機械的処理により、せん断力で発熱する場合があってもよい。   The mechanical treatment is particularly preferable because both the increase in viscosity and the decrease in egg yolk protein solubility are obtained at the same time and the flavor is maintained. Therefore, the physical properties (share stress resistance, viscosity, long-term emulsion stability and flavor) of the acidic oil-in-water emulsion obtained by manipulating the mechanical treatment conditions can be controlled. The mechanical treatment is preferably a strong stirring process, particularly a stirring tank equipped with various stirring blades. The rotation direction of the stirring blade is not limited. Examples of other machines include high-pressure homogenizers such as mountain gourin and microfluidizer, ultrasonic emulsifiers, colloid mills, line mills, homomixers, azimuth homomixers, milders, and the like. Note that heat may be generated by shearing force due to mechanical treatment.

機械的処理は、卵黄由来の成分だけを処理しても構わないが、処方上、水を配合する場合には、卵黄由来の成分だけを機械的処理した後に水を添加すると、構築された構造が一部崩壊し、粘度向上効果が低下してしまう。従って、水を配合する場合には、食塩、砂糖、グルタミン酸ナトリウムなどの固形調味料を水に分散溶解させたものと成分(B)とが混合された状態で機械的処理することが好ましい。機械的処理後に成分(A)を含む前記油相を添加する。   The mechanical treatment may treat only the components derived from egg yolk, but in the case of blending water in the prescription, the structure constructed when adding water after mechanically treating only the components derived from egg yolk Will collapse partially and the effect of improving viscosity will be reduced. Therefore, when water is blended, it is preferable to perform mechanical treatment in a state in which a solid seasoning such as sodium chloride, sugar or sodium glutamate is dispersed and dissolved in water and the component (B) is mixed. After the mechanical treatment, the oil phase containing component (A) is added.

特に、工業的生産スケールで衛生的に製品化する場合、上記方法にて得られた酸性水中油型乳化組成物は、配管を通じて充填機へ送液された後、容器に充填される。このとき酸性水中油型乳化物を工業的に生産される場合は配管を通じて充填機などへ送液された後、充填される。本発明の酸性水中油型乳化物の粘度は、およそ50kPa・s〜500kPa・s、体積平均乳化粒子径は、0.1μm〜10μmである。高粘度であるため、送液時、あるいは充填時に加圧シェアが発生しやすい。一般的な加圧シェアとしては送液シェア、及び充填シェア共に0.1kPa〜10kPaが想定される。このような工業生産時の加圧シェアに対し、本発明の酸性水中油型乳化物は、特に有効な技術である。   In particular, in the case of producing a product hygienically on an industrial production scale, the acidic oil-in-water emulsion composition obtained by the above method is fed to a filling machine through a pipe and then filled into a container. At this time, when the acidic oil-in-water emulsion is industrially produced, the acid oil-in-water emulsion is supplied to a filling machine through a pipe and then filled. The acidic oil-in-water emulsion of the present invention has a viscosity of about 50 kPa · s to 500 kPa · s and a volume average emulsion particle size of 0.1 μm to 10 μm. Due to the high viscosity, pressure shear is likely to occur during liquid feeding or filling. As a general pressure share, both a liquid feed share and a filling share are assumed to be 0.1 kPa to 10 kPa. The acidic oil-in-water emulsion of the present invention is a particularly effective technique against such a pressure share during industrial production.

このようにして製造された酸性水中油型乳化物は容器に充填され、容器入り乳化食品として、通常のマヨネーズ等と同様に使用することができる。容器としては通常、マヨネーズ、ドレッシング等の酸性水中油型乳化食品に用いられるものであれば、いずれでも良い。特に、瓶に比べて使い勝手の良い可撓性容器、例えばプラスチック製のチューブ式容器が好ましい。プラスチック製容器の材質としては、ポリエチレン、ポリプロピレン、エチレン性酢酸ビニル、エチレン・ビニルアルコール共重合体、ポリエチレンテレフタレート等の熱可塑性プラスチックの一種又は二種以上を混合して中空成型したものや、これらの熱可塑性プラスチックからなる層を二層以上に積層して中空成形したもの等が用いられる。   The acidic oil-in-water emulsion thus produced is filled in a container and can be used as an emulsified food in a container in the same manner as ordinary mayonnaise. Any container may be used as long as it is used for acidic oil-in-water emulsified foods such as mayonnaise and dressing. In particular, a flexible container that is easier to use than a bottle, for example, a plastic tube container is preferable. As the material of the plastic container, one or two or more thermoplastic plastics such as polyethylene, polypropylene, ethylenic vinyl acetate, ethylene / vinyl alcohol copolymer, polyethylene terephthalate, etc., which are hollow molded, or those A layer formed of two or more layers made of a thermoplastic plastic and hollow-molded is used.

可撓性容器に充填し使用する場合、全ての内容物が使われるまで、繰り返し絞り出しのシェアが加わる事となる。このようなシェアに対しても本発明の酸性水中油型乳化物は、有効な技術である。   When filling and using a flexible container, a share of repeated squeezing will be added until all the contents are used. The acidic oil-in-water emulsion of the present invention is an effective technique even for such a share.

参考例1、2
食塩濃度10%の卵黄液750g、水150g及び食塩15gを混合し、反応温度で十分予備加熱した。次いで、卵黄液に対して表1に示す量のホスホリパーゼA2を添加して反応を行い、酵素処理卵黄(参考例1、2)を得た。反応時間、反応温度、リゾ比率を表1に示す。尚、リゾ比率は以下の方法により求めた。まず反応物をクロロホルム/メタノール(3:1、v/v)混合溶媒により繰り返し抽出を行い、反応物中の全脂質を得た。得られた脂質混合物を薄層クロマトグラフィーに供した。一次元=クロロホルム:メタノール:水(65:25:49、v/v/v)、二次元=ブタノール:酢酸:水(60:20:20、v/v/v)による二次元薄層クロマトグラフィーにより分画した。分画した各種のリン脂質を分取し、リン脂質中のリン量を市販の測定キット(過マンガン酸塩灰化法、リン脂質テストワコー、和光純薬工業株式会社製)を用いて測定した。リゾ比率(%)は(リゾリン脂質画分中のリン重量/全リン脂質中のリン重量)×100により求めた。
Reference examples 1 and 2
750 g of egg yolk solution having a salt concentration of 10%, 150 g of water and 15 g of sodium chloride were mixed and sufficiently preheated at the reaction temperature. Subsequently, phospholipase A 2 of the amount shown in Table 1 was added to the egg yolk liquid for reaction to obtain enzyme-treated egg yolk (Reference Examples 1 and 2). Table 1 shows the reaction time, reaction temperature, and lyso ratio. The lyso ratio was determined by the following method. First, the reaction product was repeatedly extracted with a mixed solvent of chloroform / methanol (3: 1, v / v) to obtain total lipids in the reaction product. The resulting lipid mixture was subjected to thin layer chromatography. One-dimensional = chloroform: methanol: water (65:25:49, v / v / v), two-dimensional = butanol: acetic acid: water (60:20:20, v / v / v) two-dimensional thin layer chromatography Fractionated by Various fractionated phospholipids were collected, and the amount of phosphorus in the phospholipids was measured using a commercially available measurement kit (permanganate ashing method, phospholipid test Wako, manufactured by Wako Pure Chemical Industries, Ltd.). . The lyso ratio (%) was determined by (phosphorus weight in lysophospholipid fraction / phosphorus weight in total phospholipid) × 100.

実施例1(本発明品1〜5、比較品1〜5)
表2に示す組成の油相及び水相を常法に従って調整した。次いで水相を撹拌しながら油相を予備乳化した後、コロイドミル(ストレートローター:PUC社製)を使用して3000r/min、クリアランス0.045mmで均質化し、体積平均乳化粒子径1.5〜2.8μmのマヨネーズを製造した。得られたマヨネーズについて物性評価、外観評価を行った。結果を表2に示す。
Example 1 (Invention product 1-5, Comparative product 1-5)
The oil phase and aqueous phase having the composition shown in Table 2 were prepared according to a conventional method. Next, after pre-emulsifying the oil phase while stirring the aqueous phase, it was homogenized at 3000 r / min with a clearance of 0.045 mm using a colloid mill (straight rotor: manufactured by PUC). A 2.8 μm mayonnaise was produced. The obtained mayonnaise was evaluated for physical properties and appearance. The results are shown in Table 2.

試験1(物性評価)
製造したマヨネーズを加圧容器に詰め、196kPaの圧力負荷して内径4mm、長さ30cmの配管を通して加圧シェアを加えた。加圧シェア負荷前後の粘度を次法で測定した。次いでシェア負荷時の粘度低下率(%)を下式に従って求め、物性評価を行った。
Test 1 (physical property evaluation)
The manufactured mayonnaise was packed in a pressure vessel, and a pressure share of 196 kPa was applied and a pressure share was applied through a pipe having an inner diameter of 4 mm and a length of 30 cm. The viscosity before and after the pressure shear load was measured by the following method. Subsequently, the viscosity reduction rate (%) at the time of shear load was determined according to the following formula, and physical properties were evaluated.

粘度測定条件:20℃
BROOKFIELD社製DV−I型
No.6スピンドル、2r/min、30秒後測定。
Viscosity measurement conditions: 20 ° C
BROOKFIELD DV-I type
No. 6 spindles, 2r / min, measured after 30 seconds.

試験2(外観評価)
試験1で加圧シェアを負荷したマヨネーズを、プラスチック製チューブ式マヨネーズ容器(100mL)に約70体積%充填し、空気を排出し密閉した。この容器を繰り返し手で押し、500回押した後の乳化物の外観を肉眼で観察し、下記基準に従って評価を行った。
Test 2 (Appearance evaluation)
About 70% by volume of the mayonnaise loaded with a pressure share in Test 1 was filled in a plastic tube-type mayonnaise container (100 mL), and the air was discharged and sealed. The container was repeatedly pressed by hand, and the appearance of the emulsion after being pressed 500 times was observed with the naked eye and evaluated according to the following criteria.

評価基準
A:初期と変わらず、なめらかで光沢のある非常に良好な外観である。
B:僅かに肌が荒れるものの離水、離油は認められず、良好な外観である。
C:所々に離水、離油が認められ、不良な外観である。
Evaluation criteria A: The appearance is smooth and glossy and very good, unchanged from the initial stage.
B: Although the skin is slightly rough, water separation and oil separation are not recognized, and the appearance is good.
C: Water separation and oil separation were observed in some places, and the appearance was poor.

本発明品は、いずれも配管移送シェア、充填シェアに相当する加圧シェア負荷の前後での粘度低下が少なかった。また実際の使用時に相当する500回押し圧試験でも外観に変化が認められず、極めて安定であった。特にリゾリン脂質含量を調整しなくても(本発明品1)、加圧シェア耐性が優れていた。一方、水溶性大豆多糖類を含有しない比較品はいずれも、加圧シェア負荷で粘度低下が著しかった。また、500回押し圧試験でも離水が認められ、外観、シェアに対する安定性が劣っていた。   In the products of the present invention, there was little decrease in viscosity before and after the pressure share load corresponding to the pipe transfer share and the filling share. Also, the appearance was not changed even in the 500 times pressing test corresponding to the actual use, and it was very stable. In particular, even if the lysophospholipid content was not adjusted (Product 1 of the present invention), the pressure shear resistance was excellent. On the other hand, all of the comparative products not containing water-soluble soybean polysaccharides had a significant decrease in viscosity under pressure share load. Moreover, water separation was recognized also in the 500 times pressing pressure test, and the stability with respect to an external appearance and a share was inferior.

実施例2
全量が4.7kgとなるように、表3に示す組成の油相及び水相を次の方法に従って調製した。まず、精製塩、上白糖、グルタミン酸ナトリウム、からし粉、クエン酸を水に分散させたもの(「調味分散水」という。以下同じ。)と酵素処理卵黄とを、攪拌翼(翼径0.144m)を有するミキサーに添加した(調味分散水の仕込み量:1.23kg、調味分散水の比重:1100kg/m3)。これを20℃、減圧下(20kPa)で、回転数800r/minで15分間撹拌し、強攪拌処理を行った。前述したせん断エネルギーの定義と下記の式(技術情報協会発行「新しい攪拌技術の実際」(1989))から、本条件の機械的処理のせん断エネルギーを192000(m/s)と算出した。
Example 2
An oil phase and an aqueous phase having the composition shown in Table 3 were prepared according to the following method so that the total amount was 4.7 kg. First, purified salt, sucrose, sodium glutamate, mustard powder, citric acid dispersed in water (referred to as “seasoned dispersion water”, the same applies hereinafter) and enzyme-treated egg yolk were mixed with a stirring blade (blade diameter 0. 144m) (addition amount of seasoning dispersion water: 1.23 kg, specific gravity of seasoning dispersion water: 1100 kg / m 3 ). This was stirred at 20 ° C. under reduced pressure (20 kPa) at a rotation speed of 800 r / min for 15 minutes to perform a strong stirring treatment. Based on the definition of the shear energy described above and the following formula (“Technical Information Institute published“ Actual of New Stirring Technique ”(1989)), the shear energy of the mechanical treatment under this condition was calculated as 192000 (m / s).

・循環回数=循環容量/仕込み容量
循環容量(m3)=突出流量係数×翼径(m)3×回転数(r/min)×時間(min)
=1×0.1443×800×15=35.8
仕込み容量(m3)=仕込み重量(kg)/比重(kg/m3)=1.23/1100=0.00112
・撹拌翼の最外周速(m/s)=撹拌翼径(m)×3.14×回転数(r/min)/60
=0.144×3.14×800/60=6
・せん断エネルギー(m/s)=循環容量/仕込み容量×撹拌翼の最外周速
=35.8/0.00112×6=192000
(「突出流量係数」とは、羽形状、液体の種類、温度等によって異なる係数であるが、本願の場合、定義の明確化のため1とした。)
・ Number of circulation = Circulation capacity / Preparation capacity Circulation capacity (m 3 ) = Protrusion flow coefficient x Blade diameter (m) 3 x Speed (r / min) x Time (min)
= 1 x 0.144 3 x 800 x 15 = 35.8
Charge capacity (m 3 ) = Charge weight (kg) / Specific gravity (kg / m 3 ) = 1.23 / 1100 = 0.00112
・ Outermost peripheral speed (m / s) of stirring blade = stirring blade diameter (m) x 3.14 x rotation speed (r / min) / 60
= 0.144 × 3.14 × 800/60 = 6
・ Shear energy (m / s) = circulation capacity / feeding capacity × outermost peripheral speed of stirring blade
= 35.8 / 0.00112 × 6 = 192000
(The “protrusion flow coefficient” is a coefficient that varies depending on the blade shape, the type of liquid, the temperature, etc., but in the present application, it is set to 1 for clarity of definition.)

このように機械的処理した水相に油相を添加した。すなわち、対全系2%分の油相(ジグリセリド高含有油)に大豆多糖類を分散させたものを、水相の入ったミキサーに添加し、同上の攪拌速度で3分間攪拌し均一混合した。次いで、攪拌周速を3m/sにして、残りの油相を攪拌しながら添加した後、醸造酢を添加混合し、予備乳化物を得た。これを、コロイドミル(MZ80:FRYMA社製)を使用して精乳化し(回転数:4200r/min、クリアランス:0.25mm)、体積平均乳化粒子径2.1μmのマヨネーズ(精乳化物)を製造した。   The oil phase was added to the aqueous phase thus mechanically treated. That is, a soybean polysaccharide dispersed in an oil phase (high diglyceride content oil) for 2% of the total system was added to a mixer containing an aqueous phase, and stirred for 3 minutes at the same stirring speed and mixed uniformly. . Next, the stirring peripheral speed was set to 3 m / s, and the remaining oil phase was added with stirring, and then brewed vinegar was added and mixed to obtain a preliminary emulsion. This was finely emulsified using a colloid mill (MZ80: manufactured by FRYMA) (rotation speed: 4200 r / min, clearance: 0.25 mm), and mayonnaise (fine emulsion) having a volume average emulsion particle diameter of 2.1 μm. Manufactured.

実施例3
実施例2において、卵黄と調味分散水との強攪拌温度を40℃とし、その後の工程は20℃で調製して予備乳化を行ったこと以外は、実施例2と同一の条件でマヨネーズを調製した。なお、卵黄と調味分散水の粘度は、20℃に温度調整した後、測定した。
Example 3
In Example 2, mayonnaise was prepared under the same conditions as in Example 2 except that the vigorous stirring temperature of egg yolk and seasoned dispersion water was 40 ° C, and the subsequent steps were prepared at 20 ° C and pre-emulsified. did. In addition, the viscosity of egg yolk and seasoning dispersion water was measured after adjusting the temperature to 20 ° C.

比較例A
実施例2において、卵黄と調味分散水との攪拌時間を1分としたこと以外は、実施例2と同一の条件でマヨネーズを調製した。この時の機械的処理のせん断エネルギーは13000m/sであった。
Comparative Example A
In Example 2, mayonnaise was prepared under the same conditions as in Example 2 except that the stirring time of egg yolk and seasoned dispersion water was 1 minute. The shear energy of the mechanical treatment at this time was 13000 m / s.

尚、各工程にて、粘度、及び卵黄蛋白溶解度を、記載の方法で測定した。   In each step, the viscosity and egg yolk protein solubility were measured by the methods described.

〔粘度測定法〕
粘度は、B型粘度計(BH型:東京計器)を使用して測定した。
(1)予備乳化物と精乳化物は、ローターNo.6、2r/min、30秒後の測定値を用いた。
(2)予備乳化物と精乳化物以外の、油相が全量添加されていない分散物は、ローターNo.2、20r/min、30秒後の測定値を用いた。尚、初期値は、卵黄と調味水が均一化する時点として、強攪拌15秒後にサンプリングした時の値を採用した。
[Viscosity measurement method]
The viscosity was measured using a B-type viscometer (BH type: Tokyo Keiki).
(1) For the preliminary emulsion and the fine emulsion, rotor No. 6, 2r / min, measured values after 30 seconds were used.
(2) For the dispersion in which the entire amount of the oil phase other than the preliminary emulsion and the fine emulsion was not added, rotor No. 2, measured at 20 r / min, 30 seconds later was used. As the initial value, the value at the time of sampling 15 seconds after vigorous stirring was adopted as the time when egg yolk and seasoning water became uniform.

機械処理前後の粘度変化率は、次式に従って求めた。
粘度変化率(%)=(機械処理後の粘度−初期の粘度)/初期の粘度×100
The viscosity change rate before and after the mechanical treatment was determined according to the following formula.
Viscosity change rate (%) = (viscosity after mechanical processing−initial viscosity) / initial viscosity × 100

〔卵黄蛋白溶解度測定法〕
一般に卵黄の蛋白質は、リン脂質と結合したリポ蛋白質の形で存在しており、食塩水等に溶解分散させた後、遠心分離処理すると上澄部と沈殿部に分類され、それぞれ上澄部画分が低密度リポ蛋白、沈殿部画分が高密度リポ蛋白と呼ばれている。また一般の蛋白質は、加熱等の変性処理により、蛋白質が疎水化され、水への溶解度が低下すると言われている。そこで、本願では、卵黄蛋白質の変性の度合を、まず、水に溶解分散させて不溶物質を遠心分離により沈殿除去し、上澄部を再度飽和食塩水に溶解分散させて遠心分離を行うことにより、溶解している画分の蛋白質を未変性の蛋白質であると考え、卵黄蛋白溶解度と定義した。すなわち、蛋白変性が進行するに伴い、卵黄蛋白溶解度が低下する。実際の測定法を次に示す。
[Method of measuring egg yolk protein solubility]
In general, egg yolk proteins are present in the form of lipoproteins bound to phospholipids, and after dissolution and dispersion in saline, etc., they are classified into supernatants and sediments by centrifugation. The fraction is called low density lipoprotein and the precipitate fraction is called high density lipoprotein. In addition, it is said that general proteins are hydrophobized by denaturation treatment such as heating, and the solubility in water decreases. Therefore, in the present application, the degree of denaturation of egg yolk protein is first dissolved and dispersed in water, the insoluble material is precipitated and removed by centrifugation, and the supernatant is dissolved and dispersed in saturated saline again and centrifuged. The protein in the dissolved fraction was considered to be native protein and defined as egg yolk protein solubility. That is, as protein denaturation proceeds, egg yolk protein solubility decreases. The actual measurement method is shown below.

まず、酵素処理卵黄又は酵素処理卵黄と各調味料分散水を含む卵黄分散物(強攪拌初期と強攪拌後)をサンプル瓶に0.15g精秤し、蒸留水(a)15g精秤添加混合した後、この溶液を2mL遠心管に1.5g取り15000r/min、30minの条件で1回目の遠心分離を行い、不溶物質を除去した。次に、この遠心分離後の上層を2mL遠心管に0.15g精秤し、更に飽和食塩水1.5gを精秤添加混合した後、20000r/min、1時間の条件で2回目の遠心分離を行うった。遠心分離機は、HIMAC遠心分離機 TYPE SCR20BB(日立製作所(株)製)を、ローターはRPR20−3−1169を使用した。この遠心分離後の上層(未変性蛋白部)をサンプル瓶に1mL精秤し、蒸留水(b)1mL精秤し濃度調整したものを、窒素分析計(TN−05;三菱化成製)を用いて、窒素濃度を測定した。検量線は、硫酸アンモニウムを用いて作成した。測定された窒素濃度に、換算係数7.94を乗じ、蛋白質濃度を算出した。ただし、実施例2で使用した酵素処理卵黄中の蛋白質濃度は、強攪拌処理時に配合される調味分散水で希釈されており、窒素分析前処理用に2回の遠心分離処理前に蒸留水と飽和食塩水にそれぞれ希釈され、窒素分析時にも蒸留水で希釈されている。従って、窒素分析計から得られた蛋白質濃度は、これらの処理で希釈された濃度となる。そこで最終的に、卵黄蛋白溶解度は、これらの希釈処理を考慮した次式を用いて算出した。   First, 0.15 g of egg yolk dispersion containing enzyme-treated egg yolk or enzyme-treated egg yolk and each seasoning dispersion water (initially after strong stirring and after strong stirring) is precisely weighed in a sample bottle, and 15 g of distilled water (a) is added and mixed. After that, 1.5 g of this solution was taken in a 2 mL centrifuge tube and centrifuged for the first time under the conditions of 15000 r / min and 30 min to remove insoluble substances. Next, 0.15 g of the upper layer after this centrifugation is precisely weighed into a 2 mL centrifuge tube, and further 1.5 g of saturated saline is precisely weighed and mixed, and then the second centrifugation is performed at 20000 r / min for 1 hour. I did it. The centrifuge used was a HIMAC centrifuge TYPE SCR20BB (manufactured by Hitachi, Ltd.), and the rotor used was RPR20-3-1169. The upper layer (native protein part) after this centrifugation is accurately weighed in a sample bottle, and 1 mL of distilled water (b) is precisely weighed and adjusted for concentration using a nitrogen analyzer (TN-05; manufactured by Mitsubishi Kasei). The nitrogen concentration was measured. A calibration curve was prepared using ammonium sulfate. The protein concentration was calculated by multiplying the measured nitrogen concentration by a conversion factor of 7.94. However, the protein concentration in the enzyme-treated egg yolk used in Example 2 was diluted with the seasoned dispersion water blended during the strong stirring treatment, and distilled water was added before the two centrifugation treatments for nitrogen analysis pretreatment. Each is diluted with saturated saline and diluted with distilled water at the time of nitrogen analysis. Therefore, the protein concentration obtained from the nitrogen analyzer is a concentration diluted by these treatments. Therefore, the egg yolk protein solubility was finally calculated using the following equation considering these dilution treatments.

卵黄蛋白溶解度[%]=((攪拌時の酵素処理卵黄配合量[%]+攪拌時の調味分散水配合量[%])/攪拌時の酵素処理卵黄配合量[%])×((酵素処理卵黄分散物量[g]+蒸留水量(a)[g])/酵素処理卵黄分散物量[g])×((1回目の遠心分離後の上層サンプル量[g]+飽和食塩水添加量[g])/1回目の遠心分離後の上層サンプル量[g])×((2回目の遠心分離後の上層サンプル量[g]+蒸留水量(b)[g])/2回目の遠心分離後の上層サンプル量[g])×(換算係数7.94)×(窒素濃度[%])   Egg yolk protein solubility [%] = ((enzyme-treated egg yolk blending amount during stirring [%] + seasoned dispersion water blending amount during stirring [%]) / enzyme-treated egg yolk blending amount during stirring [%]) × ((enzyme Treated egg yolk dispersion amount [g] + distilled water amount (a) [g]) / enzyme-treated egg yolk dispersion amount [g]) × ((upper layer sample amount [g] after first centrifugation + saturated saline addition amount [ g]) / upper layer sample amount after first centrifugation [g]) × ((upper layer sample amount after second centrifugation [g] + distilled water amount (b) [g]) / second centrifugation Later upper layer sample amount [g]) × (conversion factor 7.94) × (nitrogen concentration [%])

尚、卵黄蛋白溶解度の初期値は、卵黄と調味水が均一化する時点として、強攪拌15秒後にサンプリングした時の値を採用した。   The initial value of the egg yolk protein solubility was the value obtained when sampling was performed after 15 seconds of intense stirring as the time when the egg yolk and seasoning water became uniform.

機械処理前後の卵黄蛋白溶解度の低下率は、次式に従って求めた。
卵黄蛋白溶解度の低下率(%)=(初期の卵黄蛋白溶解度−機械処理後の卵黄蛋白溶解度)/初期の卵黄蛋白溶解度×100
The rate of decrease in egg yolk protein solubility before and after mechanical treatment was determined according to the following equation.
Rate of decrease in egg yolk protein solubility (%) = (initial egg yolk protein solubility−yield protein solubility after mechanical treatment) / initial egg yolk protein solubility × 100

〔安定性評価法〕
製造後20℃で1ヶ月保存したマヨネーズを、50mL用の遠心管に30g精秤し15000r/min、30minの条件で遠心分離を行った。次いで、上層に遊離した油量を計量し、次式に従ってオイルオフ量を算出した。オイルオフ量をマヨネーズ(精乳化物)の乳化安定性評価の指標とした。
[Stability evaluation method]
30 g of mayonnaise stored at 20 ° C. for 1 month after production was precisely weighed in a 50 mL centrifuge tube and centrifuged under conditions of 15000 r / min and 30 min. Next, the amount of oil released to the upper layer was weighed, and the oil-off amount was calculated according to the following formula. The oil-off amount was used as an index for evaluating the emulsion stability of mayonnaise (fine emulsion).

オイルオフ量(%)=遠心分離後の遊離油量(g)/(遠心管に精秤したマヨネーズ量(g)×油相量(67%))×100(%)   Oil-off amount (%) = free oil amount after centrifugation (g) / (amount of mayonnaise precisely weighed in a centrifuge tube (g) × oil phase amount (67%)) × 100 (%)

結果を表4に示す。これから明らかなように、卵黄を含有する水相を、粘度が50%以上上昇するまで、又は卵黄蛋白溶解度を5〜60%低下させるまで攪拌した後、油相を添加して乳化した場合は、粘度と乳化安定性が特に優れていることがわかる。   The results are shown in Table 4. As is clear from this, when the aqueous phase containing egg yolk is stirred until the viscosity is increased by 50% or more or the yolk protein solubility is decreased by 5 to 60%, and then the oil phase is added and emulsified, It can be seen that the viscosity and the emulsion stability are particularly excellent.

Claims (3)

(B)卵黄を含有する水相を、攪拌、せん断、混合、均質及び混練から選択される1又は2以上の処理をして当該処理前に比べて粘度を50%以上上昇させるか又は卵黄蛋白溶解度を5〜60%低下させ、その後(C)ラムノース、フコース、アラビノース、キシロース、グルコース及びウロン酸から選ばれる糖を構成糖として含む水溶性大豆多糖類を分散させた(A)ジグリセリド含量が30重量%以上である油脂を添加することによる酸性水中油型乳化組成物の製造方法。 (B) an aqueous phase containing the egg yellow and stirring, shear mixing, or egg yolk homogeneously and one or more treatment selected from the kneading increases the viscosity more than 50% from the previous the process (A) Diglyceride content in which protein solubility is reduced by 5 to 60%, and then (C) a water-soluble soybean polysaccharide containing a sugar selected from rhamnose, fucose, arabinose, xylose, glucose and uronic acid as a constituent sugar is dispersed. The manufacturing method of the acidic oil-in-water type emulsion composition by adding the fats and oils which are 30 weight% or more. 攪拌処理の際のせん断エネルギーが35,000〜2,000,000m/sの範囲である請求項1記載の製造方法。 The manufacturing method according to claim 1 , wherein the shear energy in the stirring treatment is in the range of 35,000 to 2,000,000 m / s . 請求項1又は2記載の製造方法で製造された容器詰め食用酸性水中油型乳化組成物。 An acidic oil-in-water emulsified composition for container stuffed food produced by the production method according to claim 1 or 2.
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