JPH1056962A - Milk powder and its production - Google Patents
Milk powder and its productionInfo
- Publication number
- JPH1056962A JPH1056962A JP8218209A JP21820996A JPH1056962A JP H1056962 A JPH1056962 A JP H1056962A JP 8218209 A JP8218209 A JP 8218209A JP 21820996 A JP21820996 A JP 21820996A JP H1056962 A JPH1056962 A JP H1056962A
- Authority
- JP
- Japan
- Prior art keywords
- milk
- whey protein
- protein
- concentrated
- milk powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000008267 milk Substances 0.000 title claims abstract description 71
- 210000004080 milk Anatomy 0.000 title claims abstract description 71
- 235000013336 milk Nutrition 0.000 title claims abstract description 70
- 239000000843 powder Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 102000007544 Whey Proteins Human genes 0.000 claims abstract description 66
- 108010046377 Whey Proteins Proteins 0.000 claims abstract description 66
- 235000021119 whey protein Nutrition 0.000 claims abstract description 66
- 230000002378 acidificating effect Effects 0.000 claims abstract description 29
- 235000020183 skimmed milk Nutrition 0.000 claims abstract description 28
- 238000005345 coagulation Methods 0.000 claims abstract description 18
- 230000015271 coagulation Effects 0.000 claims abstract description 17
- 102000014171 Milk Proteins Human genes 0.000 claims abstract description 15
- 108010011756 Milk Proteins Proteins 0.000 claims abstract description 15
- 235000021239 milk protein Nutrition 0.000 claims abstract description 15
- 235000018102 proteins Nutrition 0.000 claims abstract description 11
- 102000004169 proteins and genes Human genes 0.000 claims abstract description 11
- 108090000623 proteins and genes Proteins 0.000 claims abstract description 11
- 238000001556 precipitation Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 7
- 102000011632 Caseins Human genes 0.000 claims abstract description 6
- 108010076119 Caseins Proteins 0.000 claims abstract description 6
- 235000020124 milk-based beverage Nutrition 0.000 abstract description 25
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 239000002994 raw material Substances 0.000 abstract description 14
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000003929 acidic solution Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 25
- 230000001954 sterilising effect Effects 0.000 description 14
- 238000004659 sterilization and disinfection Methods 0.000 description 13
- 238000007796 conventional method Methods 0.000 description 9
- 239000007787 solid Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 239000000796 flavoring agent Substances 0.000 description 5
- 235000019634 flavors Nutrition 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 235000015140 cultured milk Nutrition 0.000 description 4
- 235000008476 powdered milk Nutrition 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004310 lactic acid Substances 0.000 description 3
- 235000014655 lactic acid Nutrition 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 244000199885 Lactobacillus bulgaricus Species 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229930006000 Sucrose Natural products 0.000 description 2
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 2
- 238000004925 denaturation Methods 0.000 description 2
- 230000036425 denaturation Effects 0.000 description 2
- 235000015203 fruit juice Nutrition 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 235000021067 refined food Nutrition 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000005720 sucrose Substances 0.000 description 2
- 235000000346 sugar Nutrition 0.000 description 2
- 150000008163 sugars Chemical class 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008939 whole milk Nutrition 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000004267 EU approved acidity regulator Substances 0.000 description 1
- 102000004407 Lactalbumin Human genes 0.000 description 1
- 108090000942 Lactalbumin Proteins 0.000 description 1
- 235000013960 Lactobacillus bulgaricus Nutrition 0.000 description 1
- 102000008192 Lactoglobulins Human genes 0.000 description 1
- 108010060630 Lactoglobulins Proteins 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 241000194020 Streptococcus thermophilus Species 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003505 heat denaturation Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229940004208 lactobacillus bulgaricus Drugs 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000020185 raw untreated milk Nutrition 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 235000021241 α-lactalbumin Nutrition 0.000 description 1
Landscapes
- Dairy Products (AREA)
Abstract
Description
【0001】[0001]
【発明が属する技術分野】本発明は、粉乳およびその製
造方法に関する。本発明の粉乳は、溶解後のpHが酸性の
状態で加熱しても乳蛋白質が凝固・沈殿することがな
い。このため、酸性乳飲料等の原料として用いるのに適
するものである。The present invention relates to milk powder and a method for producing the same. The milk powder of the present invention does not coagulate and precipitate milk proteins even when heated in a state where the pH after dissolution is acidic. Therefore, it is suitable for use as a raw material for acidic milk drinks and the like.
【0002】[0002]
【従来の技術】乳を原料として濃縮・乾燥して製造され
た脱脂粉乳や全粉乳等の粉乳類は、各種加工食品の原料
として用いられている。これらの粉乳類を原料として調
製される加工食品の一つに、酸性乳飲料がある。酸性乳
飲料は、乳を乳酸菌または酵母で発酵して発酵乳とし、
この発酵乳に糖類や安定剤あるいは酸味調整剤や果汁、
フレバー等を添加して調製するか、または乳にクエン
酸、リンゴ酸、乳酸、酢酸、酒石酸等の有機酸を添加し
て酸性乳とし、糖類や安定剤あるいは果汁、フレバー等
を添加して調製されている。このようにして調製された
酸性乳飲料の風味の変化を防止したり、保存性を高める
ために、通常、100 〜250 kg/cm2 程度の圧力で均質化
処理した後120 〜125 ℃で2〜3 秒間程度加熱殺菌処理
して容器に充填し、流通している。2. Description of the Related Art Milk powders such as skim milk powder and whole milk powder produced by concentrating and drying milk as a raw material are used as raw materials for various processed foods. One of the processed foods prepared using these milk powders as a raw material is an acidic milk beverage. Acid milk drink, fermented milk with lactic acid bacteria or yeast to fermented milk,
Sugars and stabilizers or acidity regulators and fruit juice,
It is prepared by adding flever, etc., or prepared by adding organic acids such as citric acid, malic acid, lactic acid, acetic acid, tartaric acid to milk to make acidic milk, and adding sugars, stabilizers or fruit juice, flavor etc. Have been. In order to prevent a change in flavor of the acidic milk beverage prepared in this way and to enhance the storage stability, the acid milk beverage is usually homogenized at a pressure of about 100 to 250 kg / cm 2 and then heated at 120 to 125 ° C. for 2 hours. Heat sterilized for ~ 3 seconds, filled into containers and distributed.
【0003】これらの酸性乳飲料は、pHが3.5 〜5.0 程
度であるため、加熱殺菌処理の際、あるいは流通過程や
保存中に、含有する乳蛋白質が凝固し、沈澱することが
避けられないといった問題がある。このため従来から酸
性乳飲料に含有する乳蛋白質の凝固・沈澱の防止や、ま
た抑制する方法について種々研究されている。例えば、
酸性乳飲料(pH3.5 〜4.0 )を加熱殺菌処理する前に50
0 〜1500kg/cm2 の高圧で均質処理して、乳に酸性物質
を配合した段階で生成した乳蛋白質の粒子やカードを粉
砕し、次いで加熱殺菌処理した後、再度100 〜250 kg/
cm2 で均質処理して乳蛋白質の凝固物を再分散する方法
(特開平5-43号公報)や、110〜130 ℃程度で高温殺菌
処理したハイヒート粉乳を酸性乳飲料の原料として用い
る方法、あるいはこのハイヒート粉乳に緩衝能を付与す
るためにさらにリン酸塩を添加することも行われてい
る。[0003] Since these acidic milk drinks have a pH of about 3.5 to 5.0, it is unavoidable that the milk proteins contained therein coagulate and precipitate during heat sterilization, or during the course of distribution or storage. There's a problem. For this reason, various studies have been made on methods for preventing and suppressing coagulation and precipitation of milk proteins contained in acidic milk drinks. For example,
Before heat sterilizing acidic milk drinks (pH 3.5-4.0)
After homogenizing at a high pressure of 0 to 1500 kg / cm 2 , the milk protein particles and curd produced at the stage of mixing the acidic substance into the milk are pulverized, and then heat-sterilized, and then 100 to 250 kg / cm 2 again.
a method of homodispersing milk protein coagulation by re-dispersing a milk protein coagulated material in a cm 2 (JP-A-5-43), a method of using high-heat milk powder pasteurized at about 110 to 130 ° C. as a raw material of an acidic milk beverage, Alternatively, a phosphate is further added to impart a buffering capacity to the high heat milk powder.
【0004】[0004]
【発明が解決しようとする課題】上記の特開平5-43号公
報に開示されている酸性乳飲料を加熱殺菌処理の前後に
高圧で均質処理する方法は、乳蛋白質が凝固して生成し
た粒子やカードを微細化して分散させるものであるが、
超高圧で均質処理しなければならないために特殊な均質
機が必要であったり、流通過程や保存中に高温下に置か
れると再凝固するといった問題がある。また、ハイヒー
ト粉乳を配合した酸性乳飲料は、常法によって製造した
脱脂粉乳を用いた酸性乳飲料に比較して、加熱殺菌工程
や流通過程あるいは保存中での乳蛋白質の凝固・沈澱が
抑制されるが、風味がかなり悪くなるといった問題があ
る。このためハイヒート粉乳の酸性乳飲料への使用は、
量的に制限され、実質的な効果を得ることができなかっ
た。本発明者らは、上記の問題点に鑑み、酸性乳飲料の
原料として用いるのに適し、加熱殺菌工程や流通過程あ
るいは保存中での乳蛋白質の凝固・沈澱が抑制された粉
乳について検討した。その結果、脱脂乳を濃縮した濃縮
乳中に、ホエー蛋白質濃縮物を高度に含有させて加熱保
持し、乳蛋白質を変性させることにより、酸性乳飲料の
原料として用いても凝固・沈澱を生じない粉乳を得るこ
とができるとの知見に基づき本発明を完成させた。すな
わち、本発明は、酸性乳飲料の原料として用いても、加
熱殺菌工程や流通過程あるいは保存中に凝固・沈澱を生
じない粉乳およびその製造方法を提供することを目的と
するものである。The method of homogenizing an acidic milk beverage at high pressure before and after heat sterilization as disclosed in Japanese Patent Application Laid-Open No. Hei 5-43 discloses a method in which milk protein is coagulated and formed. And miniaturize and disperse cards.
There is a problem that a special homogenizer is required because the homogenization must be performed at an ultra-high pressure, and re-coagulation occurs when placed at a high temperature during the distribution process or storage. In addition, acid milk beverages containing high-heat milk powder are more resistant to coagulation and sedimentation of milk proteins during the heat sterilization step, distribution process, or during storage, compared to acid milk beverages using skim milk powder produced by a conventional method. However, there is a problem that the flavor is considerably deteriorated. For this reason, the use of high heat milk powder for acidic milk beverages
It was limited in quantity and could not achieve a substantial effect. In view of the above problems, the present inventors have studied milk powder that is suitable for use as a raw material for acidic milk drinks and that has suppressed coagulation and precipitation of milk proteins during the heat sterilization step, distribution process, or storage. As a result, whey protein concentrate is highly contained in concentrated milk obtained by condensing skim milk, heated and maintained, and the milk protein is denatured, so that coagulation and precipitation do not occur even when used as a raw material for acidic milk beverages. The present invention has been completed based on the finding that powdered milk can be obtained. That is, an object of the present invention is to provide a milk powder which does not cause coagulation / precipitation during the heat sterilization step, the distribution process, or the storage even when used as a raw material of an acidic milk beverage, and a method for producing the same.
【0005】[0005]
【課題を解決するための手段】本発明は、上記の目的を
達成するために次のような粉乳とその製造方法を提供す
るものである。すなわち、本発明は、蛋白質中カゼイン
蛋白質が70〜76%で、ホエー蛋白質が24〜30%からな
り、ホエー蛋白質が加熱変性されていて、酸性下で加熱
しても凝固・沈澱を生じない粉乳である。また、本発明
は、前記粉乳を調製するにあたり、ホエー蛋白質濃縮物
を、脱脂乳に配合して濃縮するか、または脱脂乳を濃縮
した濃縮乳に配合して、濃縮乳の全蛋白質あたりホエー
蛋白質を24〜30%に調整した後、加熱保持してホエー蛋
白質を変性させて乾燥することからなる粉乳の製造方法
である。そして、ホエー蛋白質を変性させるために、ホ
エー蛋白質を含有する濃縮乳を70〜100 ℃で1 〜20分間
保持することからなるものである。SUMMARY OF THE INVENTION The present invention provides the following milk powder and a method for producing the same to achieve the above object. That is, the present invention relates to a milk powder that contains 70-76% of casein protein and 24-30% of whey protein, and the whey protein is heat-denatured and does not cause coagulation and precipitation even when heated under acidic conditions. It is. In addition, the present invention relates to the preparation of the milk powder, whey protein concentrate is added to skim milk, and concentrated, or skim milk is added to concentrated milk, and whey protein is added to the total protein of the concentrated milk. Is adjusted to 24 to 30%, and then heated and maintained to denature and dry the whey protein, followed by drying. In order to denature the whey protein, the concentrated milk containing the whey protein is kept at 70 to 100 ° C. for 1 to 20 minutes.
【0006】[0006]
【発明の実施の形態】以下本発明を詳細に説明する。本
発明の粉乳は、脱脂乳を濃縮し、その濃縮乳中にホエー
蛋白質を高度に含有させて加熱変性した後乾燥すること
によって得らる。そして蛋白質の構成が、カゼイン蛋白
質70〜76%に対して、ホエー蛋白質24〜30%からなる。
原料となる脱脂乳は、常法に従って全乳から脂肪分のみ
を分離除去したものが用いられる。また濃縮乳のホエー
蛋白質含量を高めるために用いられるホエー蛋白質は、
ホエー蛋白質を70〜75%程度含有するホエー蛋白質濃縮
物か、ホエー蛋白質を90%以上含有するホエー蛋白質単
離物が用いられる。本発明では、脱脂乳を濃縮した濃縮
乳中にホエー蛋白質を全蛋白質あたり24〜30%、好まし
くは26〜30%含有させて加熱変性するが、その方法は、
大別して二通りの方法がある。一つは、脱脂乳にホエー
蛋白質を、添加してから濃縮する方法であり、もう一つ
の方法は、脱脂乳を濃縮した濃縮乳にホエー蛋白質を添
加する方法である。もちろんホエー蛋白質の一部を脱脂
乳に添加し、残りを濃縮乳に添加する方法を採用しても
よい。しかし、上記の濃縮乳中にホエー蛋白質を含有さ
せる方法の中でも、濃縮乳にホエー蛋白質を添加する方
法が最も好ましい。これは、脱脂乳を濃縮する場合、通
常、殺菌処理後に濃縮するため、脱脂乳にホエー蛋白質
を添加してから濃縮すると、この殺菌工程と後記する加
熱変性工程の両工程でホエー蛋白質が加熱されるために
必要以上に変性することがある。このため、ホエー蛋白
質の変性の制御の容易性を考慮すると濃縮乳にした段階
でホエー蛋白質を添加するのがよい。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. The milk powder of the present invention is obtained by concentrating skim milk, making the concentrated milk highly contain whey protein, heat denaturing, and drying. The protein is composed of 24% to 30% whey protein for 70% to 76% casein protein.
Skim milk as a raw material is obtained by separating and removing only fat from whole milk according to a conventional method. Whey protein used to increase the whey protein content of concentrated milk,
A whey protein concentrate containing about 70 to 75% whey protein or a whey protein isolate containing 90% or more whey protein is used. In the present invention, whey protein is contained in concentrated milk obtained by condensing skim milk at 24 to 30%, preferably 26 to 30%, and denatured by heating.
There are roughly two methods. One is a method in which whey protein is added to skim milk and then concentrated, and the other is a method in which whey protein is added to concentrated milk in which skim milk is concentrated. Of course, a method of adding a part of whey protein to skim milk and adding the rest to concentrated milk may be adopted. However, among the above methods of including whey protein in concentrated milk, the method of adding whey protein to concentrated milk is most preferred. This is because when skim milk is concentrated, it is usually concentrated after sterilization, and when whey protein is added to skim milk and then concentrated, the whey protein is heated in both the sterilization step and the heat denaturation step described below. May be modified more than necessary. For this reason, considering the easiness of controlling the denaturation of whey protein, it is preferable to add whey protein at the stage of concentrating milk.
【0007】脱脂乳の濃縮方法は、真空蒸発濃縮法や限
外ろ過膜法あるいは精密ろ過膜法等が採用できるが、生
産効率やコスト等を勘案すると、真空蒸発濃縮法が好ま
しい。これらの濃縮法によって固形分率を40〜50%に濃
縮する。この濃縮乳にホエー蛋白質としてホエー蛋白質
濃縮物やホエー蛋白質単離物の粉末化物を添加する場合
には、固形分率12%程度の溶液にし、ホエー蛋白質が濃
縮乳の全蛋白質あたり24〜30%になるように添加する。
このようにしてホエー蛋白質を配合した濃縮乳を、70〜
100 ℃で1 〜20分間加熱保持して、添加したホエー蛋白
質と脱脂乳に本来含まれているホエー蛋白質を同時に変
性させる。このホエー蛋白質の変性は、α−ラクトアル
ブミンとβ−ラクトグロブリンが加熱によって分子レベ
ルで凝固したもので、この濃縮乳や粉乳を原料乳程度の
固形分濃度に還元して塩化ナトリウムを加えて処理した
時、未変性ホエー蛋白質は沈澱しないが、変性したホエ
ー蛋白質は、沈澱画分に移行する。[0007] As a method for concentrating skim milk, a vacuum evaporation method, an ultrafiltration membrane method, a microfiltration membrane method, or the like can be adopted, but in consideration of production efficiency, cost, and the like, the vacuum evaporation concentration method is preferable. The solid content is concentrated to 40 to 50% by these concentration methods. When a whey protein concentrate or a powdered whey protein isolate is added to the concentrated milk as a whey protein, a solution having a solid content of about 12% is prepared, and the whey protein is 24 to 30% based on the total protein of the concentrated milk. Add so that
The concentrated milk containing whey protein in this manner is 70-
By heating at 100 ° C. for 1 to 20 minutes, the added whey protein and the whey protein originally contained in skim milk are simultaneously denatured. This denaturation of whey protein is a process in which α-lactalbumin and β-lactoglobulin are coagulated at the molecular level by heating. This concentrated milk or powdered milk is reduced to a solid concentration similar to that of raw milk, and treated with sodium chloride. When this occurs, the native whey protein does not precipitate, but the denatured whey protein migrates to the precipitated fraction.
【0008】上記の濃縮乳の加熱保持において、加熱温
度が70℃未満ではホエー蛋白質が十分に変性されず、一
方、100 ℃を超えると、ホエー蛋白質が加熱によって変
色するといったといった問題があるので、上記の加熱温
度と加熱時間の範囲で行うのが望ましい。また、ホエー
蛋白質の含有量が、全蛋白質あたり24%未満では、得ら
れた粉乳を酸性乳飲料の原料として用いた時、常法によ
って得られた脱脂粉乳とほとんど変わらないため、乳蛋
白質が沈澱するといった問題が避けられず、一方、30%
を超えると、ホエー蛋白質が加熱によって一部ゲル化し
たと推定される不溶物を生成するので上記含有量の範囲
に調整するのがよい。[0008] In the heating and holding of the above-mentioned concentrated milk, if the heating temperature is lower than 70 ° C, the whey protein is not sufficiently denatured. On the other hand, if the heating temperature is higher than 100 ° C, there is a problem that the whey protein is discolored by heating. It is desirable to perform the heating within the above-mentioned range of the heating temperature and the heating time. In addition, when the content of whey protein is less than 24% based on the total protein, when the obtained milk powder is used as a raw material for an acidic milk beverage, it is almost the same as skim milk powder obtained by a conventional method, so that milk protein precipitates. Problem is inevitable, while 30%
If it exceeds, the whey protein will produce an insoluble substance which is presumed to be partially gelled by heating. Therefore, the content is preferably adjusted to the above range.
【0009】上記のようにして濃縮乳にホエー蛋白質を
添加し、加熱保持してホエー蛋白質を変性した後は、常
法に従って、噴霧乾燥法等により粉乳にする。このよう
にして得られた粉乳は、蛋白質として、カゼイン蛋白質
を70〜76%、ホエー蛋白質を24〜30%含有する。通常の
方法によって製造された脱脂粉乳は、カゼイン蛋白質が
78〜82%で、ホエー蛋白質が18〜22%程度であるから、
本発明の製造方法によって得られた粉乳は、従来酸性乳
飲料に用いられていた脱脂粉乳に比較してホエー蛋白質
を約2 〜10%多く含むものである。また、この粉乳は、
酸性下で加熱処理しても凝固・沈澱がなく耐熱性の高い
粉乳である。従って、加熱殺菌を必須とする酸性乳飲料
の原料として用いるのに適しているものである。[0009] After the whey protein is added to the concentrated milk as described above and the whey protein is denatured by heating and maintaining, the milk is made into a milk powder by a spray drying method or the like according to a conventional method. The milk powder thus obtained contains 70-76% of casein protein and 24-30% of whey protein as proteins. Skim milk powder produced by the usual method has no casein protein.
78-82%, whey protein is about 18-22%,
The milk powder obtained by the production method of the present invention contains about 2 to 10% more whey protein than skim milk powder conventionally used for acidic milk drinks. Also, this milk powder
It is a milk powder with high heat resistance without coagulation / precipitation even when heated under acidic conditions. Therefore, it is suitable for use as a raw material for acidic milk beverages that require heat sterilization.
【0010】以下に本発明の実施例を示して具体的に説
明すると共に、試験例を示して本発明の効果をより明確
にする。Hereinafter, the present invention will be described in detail with reference to examples, and test examples will be described to further clarify the effects of the present invention.
実施例1 ホエー蛋白質が全蛋白質量の22%である脱脂乳を、常法
に従って真空蒸発濃縮法により濃縮し、固形分率が50%
の脱脂濃縮乳を得た。この濃縮乳に固形分率12%に溶解
したホエー蛋白質濃縮物を加え、ホエー蛋白質濃度を全
蛋白質量の27%まで増加させた。この濃縮乳を、80℃ま
で加熱し1 分間保持してホエー蛋白質を変性させた後、
噴霧乾燥機で乾燥して水分含有量が3.8 %のホエー蛋白
質を高度に含有する粉乳を得た。Example 1 Skim milk in which whey protein is 22% of the total protein is concentrated by a vacuum evaporation method according to a conventional method, and the solid content is 50%.
Defatted concentrated milk was obtained. To this concentrated milk, a whey protein concentrate dissolved at a solid content of 12% was added to increase the whey protein concentration to 27% of the total protein mass. After heating this concentrated milk to 80 ° C. and holding it for 1 minute to denature the whey protein,
Drying with a spray drier yielded a milk powder highly containing whey protein with a water content of 3.8%.
【0011】実施例2 実施例1で得られた粉乳を10%の固形濃度に還元し、こ
れにラクトバチルス・ブルガリクス(L.bulgaricus) と
ストレプトコッカス・サーモフィラス(S.thermophilus)
の混合乳酸菌スターター3 重量%を添加して 8時間発酵
させて発酵乳を得た。この発酵乳に蔗糖溶液を加えて蔗
糖濃度14%にした後、120 ℃で1 秒間の加熱殺菌処理を
した。加熱殺菌処理後200ml 容のプラスチック容器に充
填してpHが5.0 の酸性乳飲料を得た。この酸性乳飲料
は、加熱殺菌処理の際には凝固・沈澱物を生成すること
がなく、また、10℃で2 週間保存して観察したが、ほと
んど凝固・沈澱していなかった。また風味も常法によっ
て調製した脱脂粉乳を用いたのと同じ風味を有し、良好
な酸性乳飲料であった。Example 2 The powdered milk obtained in Example 1 was reduced to a solid concentration of 10%, to which Lactobacillus bulgaricus ( L. bulgaricus ) and Streptococcus thermophilus (S. the rm ophilus) were added.
3% by weight of a mixed lactic acid bacteria starter was added and fermented for 8 hours to obtain fermented milk. A sucrose solution was added to the fermented milk to adjust the sucrose concentration to 14%, followed by heat sterilization at 120 ° C. for 1 second. After heat sterilization, the mixture was filled into a 200 ml plastic container to obtain an acidic milk beverage having a pH of 5.0. This acidic milk beverage did not produce any coagulation / precipitate during the heat sterilization treatment and was stored at 10 ° C. for 2 weeks and observed, but hardly coagulated / precipitated. The flavor was the same as that obtained by using skim milk powder prepared by a conventional method, and the beverage was a good acidic milk beverage.
【0012】[0012]
(加熱による凝固安定性試験)実施例1で得られた粉乳
と常法に従って製造された脱脂粉乳を、それぞれpHが5.
0 の温湯で固形濃度15%に還元した。これを耐圧耐熱性
のガラス容器に入れてオイルバスで120 ℃まで加熱して
2 分毎に凝固の有無を観察した。この結果、常法に従っ
て調製された脱脂粉乳を含有する還元乳は、10分間後に
凝固が見られたのに対して、実施例1で得られた粉乳を
還元したものは、30分間経過しても凝固・沈澱が観察さ
れなかった。このことから、本発明の方法によって得ら
れた粉乳を還元した溶液は、酸性下で耐熱性があるため
に、酸性乳飲料の原料として十分使用できることが判っ
た。(Coagulation Stability Test by Heating) The milk powder obtained in Example 1 and the skim milk powder produced according to a conventional method each had a pH of 5.
It was reduced to a solid concentration of 15% with hot water of 0%. Put this in a pressure and heat resistant glass container and heat it to 120 ° C in an oil bath.
The presence of coagulation was observed every 2 minutes. As a result, reduced milk containing skimmed milk powder prepared according to a conventional method showed coagulation after 10 minutes, whereas reduced milk powder obtained in Example 1 was reduced after 30 minutes. No coagulation / precipitation was observed. From this, it was found that the solution obtained by reducing the milk powder obtained by the method of the present invention can be sufficiently used as a raw material for an acidic milk beverage because it has heat resistance under acidic conditions.
【0013】[0013]
【発明の効果】本発明の粉乳は、脱脂乳を濃縮した濃縮
乳にホエー蛋白質を高度に含有させ、この濃縮乳を加熱
保持してホエー蛋白質を変性させた後乾燥することによ
って調製したものである。このため、本発明の粉乳を溶
解して還元乳とした後酸性下で加熱しても乳蛋白質の凝
固・沈澱物を生成せず、また風味も常法によって調製さ
れた脱脂粉乳と変わることがない。このため、加熱殺菌
が必須である酸性乳飲料等の原料として用いることがで
きる。さらに加熱殺菌工程ではもちろん、流通過程や保
存中においても凝固・沈澱物を生成せず、実用上優れた
効果を得ることができる。The milk powder of the present invention is prepared by making whey protein highly contained in concentrated milk obtained by condensing skim milk, heating and maintaining the concentrated milk to denature the whey protein, and then drying. is there. For this reason, even if the milk powder of the present invention is dissolved to make reduced milk and then heated under acidic conditions, no coagulation / precipitation of milk protein is formed, and the flavor may be different from skim milk powder prepared by a conventional method. Absent. For this reason, it can be used as a raw material for acidic milk beverages and the like, which require heat sterilization. Further, in the heat sterilization step, of course, no coagulation / precipitate is generated even during the distribution process or during storage, so that a practically excellent effect can be obtained.
Claims (3)
%、ホエー蛋白質を24〜30%含有し、ホエー蛋白質
が加熱変性されていて、酸性下で加熱しても凝固・沈澱
を生じないことを特徴とする粉乳。(1) A casein protein in a protein of 70-76.
% Milk protein, containing 24 to 30% whey protein, wherein the whey protein is heat-denatured and does not cause coagulation / precipitation even when heated under acidic conditions.
するか、または脱脂乳を濃縮した濃縮乳に配合して、濃
縮乳の全蛋白質あたりホエー蛋白質を24〜30%に調
整し、加熱保持してホエー蛋白質を変性させた後乾燥す
ることを特徴とする粉乳の製造方法。2. Whey protein is added to skim milk and concentrated, or skim milk is added to concentrated milk, and the whey protein is adjusted to 24 to 30% based on the total protein of the concentrated milk. A method for producing milk powder, comprising drying the whey protein after holding it to denature it.
100℃で1〜20分間保持してホエー蛋白質を変性さ
せる請求項2記載の粉乳の製造方法。3. A concentrated milk containing whey protein of 70 to
The method for producing milk powder according to claim 2, wherein the whey protein is denatured by maintaining the whey protein at 100 ° C for 1 to 20 minutes.
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JP8218209A JP3062095B2 (en) | 1996-08-20 | 1996-08-20 | Powdered milk and method for producing the same |
Applications Claiming Priority (1)
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JP8218209A JP3062095B2 (en) | 1996-08-20 | 1996-08-20 | Powdered milk and method for producing the same |
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JPH1056962A true JPH1056962A (en) | 1998-03-03 |
JP3062095B2 JP3062095B2 (en) | 2000-07-10 |
Family
ID=16716339
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008507285A (en) * | 2004-07-23 | 2008-03-13 | クラフト・フーヅ・ホールディングス・インコーポレイテッド | Heat-stable concentrated dairy products |
JP2011152107A (en) * | 2010-01-28 | 2011-08-11 | Meiji Co Ltd | Composition for producing dairy product, the dairy product, and method for producing the dairy product |
JP2015059937A (en) * | 2013-09-18 | 2015-03-30 | 宜蘭食品工業股▲フン▼有限公司 | Method for detecting thermostability of protein in dairy product |
US9055752B2 (en) | 2008-11-06 | 2015-06-16 | Intercontinental Great Brands Llc | Shelf-stable concentrated dairy liquids and methods of forming thereof |
US9282755B2 (en) | 2008-09-02 | 2016-03-15 | Intercontinental Great Brands Llc | Heat stable concentrated dairy liquid and cream product |
US11490629B2 (en) | 2010-09-08 | 2022-11-08 | Koninklijke Douwe Egberts B.V. | High solids concentrated dairy liquids |
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CH715825A1 (en) * | 2019-02-08 | 2020-08-14 | Emmi Schweiz Ag | Process for the production of a cold mixed milk beverage. |
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1996
- 1996-08-20 JP JP8218209A patent/JP3062095B2/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008507285A (en) * | 2004-07-23 | 2008-03-13 | クラフト・フーヅ・ホールディングス・インコーポレイテッド | Heat-stable concentrated dairy products |
US7887864B2 (en) | 2004-07-23 | 2011-02-15 | Kraft Foods Global Brands Llc | Heat-stable concentrated milk product |
US8236362B2 (en) | 2004-07-23 | 2012-08-07 | Kraft Foods Global Brands Llc | Heat-stable concentrated milk product |
US8613967B2 (en) | 2004-07-23 | 2013-12-24 | Intercontinental Great Brands Llc | Heat-stable concentrated milk product |
US9282755B2 (en) | 2008-09-02 | 2016-03-15 | Intercontinental Great Brands Llc | Heat stable concentrated dairy liquid and cream product |
US9055752B2 (en) | 2008-11-06 | 2015-06-16 | Intercontinental Great Brands Llc | Shelf-stable concentrated dairy liquids and methods of forming thereof |
JP2011152107A (en) * | 2010-01-28 | 2011-08-11 | Meiji Co Ltd | Composition for producing dairy product, the dairy product, and method for producing the dairy product |
US11490629B2 (en) | 2010-09-08 | 2022-11-08 | Koninklijke Douwe Egberts B.V. | High solids concentrated dairy liquids |
JP2015059937A (en) * | 2013-09-18 | 2015-03-30 | 宜蘭食品工業股▲フン▼有限公司 | Method for detecting thermostability of protein in dairy product |
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