JPH0568488A - Production of protein derived from oilseed - Google Patents

Production of protein derived from oilseed

Info

Publication number
JPH0568488A
JPH0568488A JP23464991A JP23464991A JPH0568488A JP H0568488 A JPH0568488 A JP H0568488A JP 23464991 A JP23464991 A JP 23464991A JP 23464991 A JP23464991 A JP 23464991A JP H0568488 A JPH0568488 A JP H0568488A
Authority
JP
Japan
Prior art keywords
protein
cyclodextrin
ultrafiltration membrane
ultrafiltration
extract
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.)
Pending
Application number
JP23464991A
Other languages
Japanese (ja)
Inventor
Naohito Kudo
尚人 工藤
Toshihiro Kiuchi
俊浩 木内
Noboru Shirahata
登 白幡
Toshihide Oda
敏秀 織田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kao Corp filed Critical Kao Corp
Priority to JP23464991A priority Critical patent/JPH0568488A/en
Publication of JPH0568488A publication Critical patent/JPH0568488A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain the subject protein, having enzymic activity, excellent in flavor and hardly containing malodorous ingredients by treating an extract solution prepared by extracting the protein from oilseeds with an ultrafiltration membrane in the coexistence of cyclodextrin. CONSTITUTION:An extract solution prepared by extracting a protein having enzymic activity from oilseeds selected from the group consisting of soybean, rapeseed, sunflower, peanut, cottonseed, safflower, mustard, sesame, olive and corn is treated with an ultrafiltration membrane having >=5000 fractionation molecular weight in the coexistence of cyclodextrin (added in an amount preferably from >=0.01wt.% based on the extract solution to the saturated solubility of the cyclodextrin) to afford the objective protein. Furthermore, the treating temperature with the ultrafiltration membrane is preferably 0-40 deg.C.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は油糧種子由来蛋白質の製
造方法に関し、詳しくは油糧種子から、酵素活性を有
し、風味の良好な蛋白質を製造する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an oil seed-derived protein, and more particularly to a method for producing a protein having an enzyme activity and a good flavor from an oil seed.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】従来、
酵素反応に種々の生体由来の酵素が利用されており、例
えば、大豆等の油糧種子から抽出される酵素が用いられ
ているが、酵素反応生産物の風味を改善するために油糧
種子抽出物を限外濾過等の方法で精製して用いている。
しかし、油糧種子特有の大豆臭や青草味等の異臭成分の
蛋白質への吸着が比較的強固であるため限外濾過のみで
は、これらの異臭成分を除くことができなかった。
2. Description of the Related Art Conventionally, the problems to be solved by the invention
Various bio-derived enzymes are used in enzyme reactions, for example, enzymes extracted from oil seeds such as soybeans are used, but oil seed extraction is used to improve the flavor of enzyme reaction products. The product is used after being purified by a method such as ultrafiltration.
However, adsorption of offensive odor components such as soybean odor and green grass taste, which are peculiar to oil seeds, to proteins was relatively strong, so that these offensive odor components could not be removed only by ultrafiltration.

【0003】本発明者らは、油糧種子から蛋白質を抽出
する際に、特定の抽出緩衝液を用い蛋白質を抽出し、更
にこれを限外濾過することにより、高分子蛋白質の溶出
を抑制し、特定の分子量範囲を持つ風味の良好な蛋白質
を得る方法について検討したところ、以下に示すような
欠点が明らかとなった。 (1) 抽出法が限定されるため、油糧種子に内在している
酵素を充分に活用できない。 (2) 限外濾過による抽出液の濃縮を行い、酵素活性を上
げようとすると、蛋白質濃度も上がってしまうため、こ
の蛋白質を酵素として用いて酵素反応を行っても酵素反
応生産物の風味が低下する。 即ち、限外濾過法においては遊離の異臭成分は除去でき
ても蛋白質に吸着した異臭成分までは除去できないこと
が最大の欠点であった。
The inventors of the present invention, when extracting proteins from oil seeds, extract the proteins using a specific extraction buffer and further ultrafilter this to suppress the elution of high molecular proteins. When a method for obtaining a protein having a specific molecular weight range and a good flavor was examined, the following drawbacks became clear. (1) Since the extraction method is limited, the enzymes contained in oil seeds cannot be fully utilized. (2) When the extract is concentrated by ultrafiltration to increase the enzyme activity, the protein concentration also rises, so even if the enzyme reaction is performed using this protein as an enzyme, the flavor of the enzyme reaction product will be improved. descend. That is, in the ultrafiltration method, the biggest drawback is that even though the free off-flavor component can be removed, the off-odor component adsorbed on the protein cannot be removed.

【0004】[0004]

【課題を解決するための手段】かかる現状において、本
発明者らは上記課題を解決すべく鋭意研究の結果、油糧
種子抽出液にサイクロデキストリンを添加することによ
り、蛋白質に吸着していない遊離の異臭成分を包括する
と同時に、蛋白質に吸着している異臭成分も包括するこ
とにより蛋白質と分離させることができ、これを更に限
外濾過処理することにより異臭成分を包括したサイクロ
デキストリンを除去することができ、異臭成分の完全な
除去ができることを見出し、本発明を完成するに至っ
た。即ち、本発明は、油糧種子から蛋白質を抽出した抽
出液を、サイクロデキストリンの共存下、限外濾過膜に
より処理することを特徴とする、油糧種子由来蛋白質の
製造方法を提供するものである。
Under the present circumstances, as a result of intensive studies to solve the above-mentioned problems, the present inventors have found that by adding cyclodextrin to an oil seed extract, free release which is not adsorbed on protein is released. It is possible to separate off the odorous components adsorbed to the protein from the protein at the same time as including the offensive odor components, and to remove cyclodextrin containing the offensive odor components by further ultrafiltration. It was found that the odorous components could be completely removed, and the present invention was completed. That is, the present invention provides a method for producing an oil seed-derived protein, which comprises treating an extract obtained by extracting a protein from oil seeds with an ultrafiltration membrane in the presence of cyclodextrin. is there.

【0005】本発明のように限外濾過処理時にサイクロ
デキストリンを共存させることにより、高分子蛋白質或
いは低分子蛋白質を抑制するような条件以外で抽出され
た蛋白質を酵素液として用いた場合でも、更にこの蛋白
質を濃縮したものを酵素液として用いた場合でも、製造
される酵素反応生産物の風味は良好であった。尚、大豆
蛋白質にサイクロデキストリンを添加することにより風
味を改善する方法については報告例があり、例えばファ
インケミカル,12, 5-14(1986)、食品工業, 9, 25-30(1
984)、食品工業, 4, 81-85(1986)、特開昭51−148052号
公報などに述べられている。しかしながらこれらの方法
では、異臭成分はマスキングされているだけで、製品と
なる大豆蛋白質中に存在しており、これを食するとき、
その異臭成分であるアルデヒド、ケトン、アルコール等
を摂取していることになる。しかし、本発明の方法によ
れば、異臭成分は除去されていることになり、これらの
方法とは異なるものである。
As in the present invention, by coexisting with cyclodextrin during the ultrafiltration treatment, even when the protein extracted under the conditions other than the condition of suppressing the high molecular weight protein or the low molecular weight protein is used as the enzyme solution, Even when the protein solution concentrated was used as the enzyme solution, the flavor of the produced enzyme reaction product was good. There are reports on methods for improving the flavor by adding cyclodextrin to soybean protein, for example, Fine Chemical, 12, 5-14 (1986), Food Industry, 9, 25-30 (1
984), Food Industry, 4, 81-85 (1986), JP-A-51-148052, and the like. However, in these methods, the off-flavor component is only masked and is present in the soy protein to be the product, and when eating this,
You are ingesting the offensive odor components such as aldehydes, ketones, and alcohol. However, according to the method of the present invention, the offensive odor component is removed, which is different from these methods.

【0006】本発明に用いられる油糧種子は、大豆、な
たね、ひまわり、落花生、綿実、紅花、辛子、胡麻、オ
リーブ、コーン等が挙げられ、経済性、蛋白含有量、酵
素活性の点から、大豆が好ましい。油糧種子はそのまま
か、あるいは粉砕してもよく、その場合粉砕物の平均粒
径が0.1mm 以上であることが望ましい。
The oil seeds used in the present invention include soybean, rapeseed, sunflower, peanut, cottonseed, safflower, pepper, sesame, olive, corn and the like, and they are economical, protein content and enzyme activity. Soybeans are preferred. The oil seed may be used as it is or may be ground, and in that case, it is desirable that the average particle size of the ground product is 0.1 mm or more.

【0007】本発明に用いられる抽出液としては、水、
あるいは有機酸の金属塩又は/及び無機酸の金属塩の1
種又は2種以上を含有する水溶液が挙げられる。特に有
機酸及び/又は無機酸のアルカリ金属塩及び/又はアル
カリ土類金属塩が望ましい。有機酸としては、炭素数2
〜8の直鎖又は分岐型の脂肪族カルボン酸、炭素数7〜
12の芳香族カルボン酸等が挙げられ、具体例としては、
酢酸、プロピオン酸、酪酸、カプロン酸、カプリル酸、
イソプロピオン酸、イソ酪酸、イソ吉草酸などが挙げら
れる。無機酸としては、ハロゲン化水素酸、硫酸、リン
酸、炭酸等が挙げられる。アルカリ金属塩としては、ナ
トリウム塩、カリウム塩等が、アルカリ土類金属塩とし
ては、バリウム塩、マグネシウム塩、カルシウム塩等が
挙げられる。この金属塩類水溶液の濃度は0.01mM〜1M
の範囲、好ましくは0.1 〜700 mM、更に好ましくは1〜
100 mMの範囲で用いられる。抽出媒体の量は特に規定は
ないが、油糧種子に対して重量比 1.0〜50、好ましくは
2.0〜30である。抽出を行う際の温度、pH等は特に規定
はなく、抽出操作は、油糧種子と抽出媒体とを接触させ
た後、ただ浸漬させるだけでも良く、撹拌を加えても良
いが、油糧種子から不活性な繊維質等が分離してくるこ
とを考えると、撹拌は加えないか、またはあまり強く加
えない方が望ましい。
The extract used in the present invention is water,
Alternatively, one of a metal salt of an organic acid and / or a metal salt of an inorganic acid
An aqueous solution containing one species or two or more species may be mentioned. Alkali metal salts and / or alkaline earth metal salts of organic acids and / or inorganic acids are particularly desirable. Organic acid has 2 carbon atoms
~ 8 straight-chain or branched aliphatic carboxylic acid, carbon number 7 ~
12 aromatic carboxylic acids and the like can be mentioned, and specific examples include:
Acetic acid, propionic acid, butyric acid, caproic acid, caprylic acid,
Examples include isopropionic acid, isobutyric acid, isovaleric acid, and the like. Examples of the inorganic acid include hydrohalic acid, sulfuric acid, phosphoric acid, carbonic acid and the like. Examples of the alkali metal salt include sodium salt and potassium salt, and examples of the alkaline earth metal salt include barium salt, magnesium salt and calcium salt. The concentration of this metal salt aqueous solution is 0.01 mM to 1 M
Range, preferably 0.1-700 mM, more preferably 1-
Used in the 100 mM range. The amount of the extraction medium is not particularly limited, but the weight ratio to the oil seed is 1.0 to 50, preferably
2.0 to 30. There is no particular limitation on the temperature, pH, etc. when performing extraction, and the extraction operation may be such that after the oil seed and the extraction medium are contacted with each other, it may be simply immersed, or stirring may be added. Considering that inert fibers and the like are separated from the mixture, it is preferable not to add stirring or not to add too much stirring.

【0008】本発明においては、上記のようにして得ら
れた抽出液を、サイクロデキストリンの共存下、限外濾
過膜により処理する。サイクロデキストリンを共存させ
る方法としては、油糧種子から蛋白質を抽出した抽出液
にサイクロデキストリンを添加するか、或いは当該抽出
液にサイクロデキストリンを加えながら限外濾過膜によ
る処理を行うかのいずれでもよい。サイクロデキストリ
ンは、グルコースが6個以上α−1,4 結合した環状オリ
ゴ糖であり、α体、β体、γ体のいずれも本発明に用い
ることができ、またそれらの混合物であっても良い。ま
た分岐サイクロデキストリンも用いることができる。
In the present invention, the extract obtained as described above is treated with an ultrafiltration membrane in the presence of cyclodextrin. As a method of coexisting cyclodextrin, either cyclodextrin may be added to the extract obtained by extracting the protein from the oil seed, or treatment with an ultrafiltration membrane may be performed while adding cyclodextrin to the extract. .. Cyclodextrin is a cyclic oligosaccharide having 6 or more α-1,4 bonds of glucose, and any of α-form, β-form and γ-form can be used in the present invention or a mixture thereof. .. Branched cyclodextrins can also be used.

【0009】本発明におけるサイクロデキストリンの添
加量は、油糧種子抽出液に対して0.01重量%からサイク
ロデキストリンの飽和溶解度までの量である。サイクロ
デキストリンの添加方法は特に規定はなく、油糧種子抽
出液に対して直接添加しても良く、また限外濾過処理膜
による処理時の加水緩衝液の中に添加しておいても構わ
ない。
The amount of cyclodextrin added in the present invention is from 0.01% by weight to the oil seed extract to a saturated solubility of cyclodextrin. The method for adding cyclodextrin is not particularly limited, and it may be added directly to the oil seed extract, or may be added to the water buffer during the treatment with the ultrafiltration membrane. ..

【0010】本発明において用いる限外濾過膜の分画分
子量は5000以上であることが好ましく、更に好ましくは
10000 以上である。分画分子量の上限は、一般に限外濾
過の範囲に属するものなら、限定されるものではない。
限外濾過操作を行う際の温度は、0〜40℃が好ましく、
更に好ましくは5〜30℃の範囲であり、蛋白質の変性、
酵素の失活を防ぐような条件が望ましい。限外濾過を行
う際の操作圧は、特に規定はないが0.5〜10kg/cm2で行
うことが好ましい。本発明の限外濾過工程においては、
蛋白質抽出液を限外濾過により一度濃縮した後、再び金
属塩水溶液を加える操作を、少なくとも1回行うことが
好ましい。濃縮倍率は特に規定されるものではなく、装
置、抽出液量などから任意に決められる。用いる金属塩
は特に規定はないが、特に有機酸及び/又は無機酸のア
ルカリ金属塩及び/又はアルカリ土類金属塩が望まし
く、そのうち1種又は2種以上用いても良く、蛋白質を
抽出したときに用いた金属塩水溶液と異なっても良い。
更にこの金属塩水溶液の濃度も特に規定されるものでは
なく、蛋白質を抽出したときに用いた濃度と異なっても
良い。
The molecular weight cut-off of the ultrafiltration membrane used in the present invention is preferably 5000 or more, more preferably
It is over 10,000. The upper limit of the molecular weight cutoff is not particularly limited as long as it generally belongs to the range of ultrafiltration.
The temperature when performing the ultrafiltration operation is preferably 0 to 40 ° C,
More preferably, it is in the range of 5 to 30 ° C., and denaturation of protein,
Conditions that prevent inactivation of the enzyme are desirable. The operating pressure for performing ultrafiltration is not particularly limited, but it is preferably 0.5 to 10 kg / cm 2 . In the ultrafiltration step of the present invention,
After the protein extract is once concentrated by ultrafiltration, the operation of adding the metal salt aqueous solution again is preferably performed at least once. The concentration ratio is not particularly specified, and can be arbitrarily determined depending on the device, the amount of extract, and the like. The metal salt used is not particularly limited, but alkali metal salts and / or alkaline earth metal salts of organic acids and / or inorganic acids are particularly desirable, and one or more of them may be used, and when a protein is extracted. It may be different from the metal salt aqueous solution used for.
Furthermore, the concentration of the aqueous metal salt solution is not particularly limited, and may be different from the concentration used when the protein was extracted.

【0011】以上の工程を経て、風味が改善された酵素
活性を有する油糧種子由来の蛋白質が製造されるが、こ
のものは水溶液の状態でも良く、また酵素活性を保持し
たままの乾燥法で乾燥させた固体の状態でもよく、その
形態を規定するものではない。
[0011] Through the above steps, a protein derived from oil seeds having an enzymatic activity with improved flavor is produced. This protein may be in the form of an aqueous solution, or may be dried by a method of keeping the enzymatic activity. It may be in a dried solid state, and its form is not specified.

【0012】[0012]

【実施例】以下に本発明の実施例を述べるが、本発明は
これらの実施例に限定されるものではない。
EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples.

【0013】実施例1 微細化した大豆から、50mM酢酸−50mM塩化カルシウム緩
衝液(pH6.0) を用いて25℃にて蛋白質を抽出し、これに
β−サイクロデキストリン1重量%を加え攪拌し溶解さ
せた。この抽出液を分画分子量13000 の限外濾過膜(旭
化成工業(株)製,ポリアクリロニトリル膜)を用いて
濃縮した後、希釈する操作を繰り返し、分子量 13000
以下の画分を除去した。この蛋白抽出液は酵素活性を持
ち、濃縮しても大豆臭や、青草味は、β−サイクロデキ
ストリンを加えないで単に限外濾過処理したときに比べ
て著しく低下していた。
Example 1 Protein was extracted from micronized soybeans at 25 ° C. using 50 mM acetic acid-50 mM calcium chloride buffer (pH 6.0), and 1% by weight of β-cyclodextrin was added thereto and stirred. Dissolved. This extract was concentrated using an ultrafiltration membrane (polyacrylonitrile membrane manufactured by Asahi Kasei Co., Ltd.) with a molecular weight cutoff of 13000, and then the dilution operation was repeated to obtain a molecular weight of 13000.
The following fractions were removed. This protein extract had enzyme activity, and even when concentrated, the soybean odor and the green grass taste were remarkably reduced as compared with those obtained by simply performing ultrafiltration without adding β-cyclodextrin.

【0014】実施例2 微細化した大豆から、50mM酢酸−50mM塩化カルシウム緩
衝液(pH6.0) を用いて25℃にて蛋白質を抽出し、これを
分画分子量13000 の限外濾過膜(旭化成工業(株)製,
ポリアクリロニトリル膜) を用いて濃縮した。これに、
β−サイクロデキストリン1重量%を加えた50mM酢酸−
50mM塩化カルシウム緩衝液(pH6.0) を添加して希釈し、
この操作を繰り返すことにより分子量13000 以下の画分
を除去した。この蛋白抽出液は酵素活性を持ち、濃縮し
ても大豆臭や、青草味は、β−サイクロデキストリンを
加えないで単に限外濾過処理したときに比べて著しく低
下していた。
Example 2 Proteins were extracted from micronized soybeans using 50 mM acetic acid-50 mM calcium chloride buffer (pH 6.0) at 25 ° C., and the proteins were extracted with an ultrafiltration membrane having a molecular weight cut-off of 13000 (Asahi Kasei). Manufactured by Kogyo Co., Ltd.,
It was concentrated using a polyacrylonitrile membrane). to this,
50 mM acetic acid containing 1% by weight of β-cyclodextrin-
Dilute by adding 50 mM calcium chloride buffer (pH 6.0),
By repeating this operation, a fraction having a molecular weight of 13,000 or less was removed. This protein extract had enzyme activity, and even when concentrated, the soybean odor and the green grass taste were remarkably reduced as compared with those obtained by simply performing ultrafiltration without adding β-cyclodextrin.

【0015】[0015]

【発明の効果】油糧種子から蛋白質を抽出するにあた
り、抽出液にサイクロデキストリンを共存せしめ、当該
抽出液を限外濾過膜により処理する本発明の方法によ
り、油糧種子特有の種子臭等の異臭成分をほとんど含ま
ない風味の優れた油糧種子由来蛋白質を製造することが
できる。
INDUSTRIAL APPLICABILITY When extracting proteins from oil seeds, cyclodextrin is allowed to coexist in the extract, and the extract is treated with an ultrafiltration membrane. It is possible to produce an oil seed-derived protein having an excellent flavor and containing almost no offensive odor component.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 織田 敏秀 茨城県鹿島郡波崎町土合本町1丁目8762− 23 花王土合社宅 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihide Oda 1876-2-23 Doihoncho, Hasaki-cho, Kashima-gun, Ibaraki Prefecture Kao Dogo-sha House

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 油糧種子から蛋白質を抽出した抽出液
を、サイクロデキストリンの共存下、限外濾過膜により
処理することを特徴とする、油糧種子由来蛋白質の製造
方法。
1. A method for producing a protein derived from oil seed, which comprises treating an extract obtained by extracting protein from oil seed with an ultrafiltration membrane in the presence of cyclodextrin.
【請求項2】 蛋白質が酵素活性を有するものである請
求項1記載の製造方法。
2. The method according to claim 1, wherein the protein has an enzymatic activity.
【請求項3】 限外濾過膜の分画分子量が5000以上であ
る請求項1記載の製造方法。
3. The production method according to claim 1, wherein the molecular weight cutoff of the ultrafiltration membrane is 5,000 or more.
【請求項4】 限外濾過膜による処理温度が0〜40℃で
ある請求項1記載の製造方法。
4. The production method according to claim 1, wherein the treatment temperature with the ultrafiltration membrane is 0 to 40 ° C.
【請求項5】 油糧種子が、大豆、なたね、ひまわり、
落花生、綿実、紅花、辛子、胡麻、オリーブ及びコーン
からなる群から選ばれたものである請求項1記載の製造
方法。
5. The oil seed is soybean, rapeseed, sunflower,
The production method according to claim 1, which is selected from the group consisting of peanut, cottonseed, safflower, pepper, sesame, olive and corn.
JP23464991A 1991-09-13 1991-09-13 Production of protein derived from oilseed Pending JPH0568488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23464991A JPH0568488A (en) 1991-09-13 1991-09-13 Production of protein derived from oilseed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23464991A JPH0568488A (en) 1991-09-13 1991-09-13 Production of protein derived from oilseed

Publications (1)

Publication Number Publication Date
JPH0568488A true JPH0568488A (en) 1993-03-23

Family

ID=16974333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23464991A Pending JPH0568488A (en) 1991-09-13 1991-09-13 Production of protein derived from oilseed

Country Status (1)

Country Link
JP (1) JPH0568488A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007535948A (en) * 2004-05-07 2007-12-13 バーコン ニュートラサイエンス (エムビー) コーポレイション Reduction of phytic acid in protein isolation process
CN102372763A (en) * 2011-10-31 2012-03-14 新疆银隆农业国际合作股份有限公司 Preparation method for industrial cotton seed protein, product prepared with same and application thereof
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US10513817B2 (en) 2015-10-02 2019-12-24 Lg Electronics Inc. Washing machine
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US11021827B2 (en) 2015-10-02 2021-06-01 Lg Electronics Inc. Method for controlling washing machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007535948A (en) * 2004-05-07 2007-12-13 バーコン ニュートラサイエンス (エムビー) コーポレイション Reduction of phytic acid in protein isolation process
CN102372763A (en) * 2011-10-31 2012-03-14 新疆银隆农业国际合作股份有限公司 Preparation method for industrial cotton seed protein, product prepared with same and application thereof
US10167589B2 (en) 2015-10-02 2019-01-01 Lg Electronics Inc. Method for controlling rinsing cycle of washing machine
US10513817B2 (en) 2015-10-02 2019-12-24 Lg Electronics Inc. Washing machine
US10626537B2 (en) 2015-10-02 2020-04-21 Lg Electronics Inc. Washing machine
US10738404B2 (en) 2015-10-02 2020-08-11 Lg Electronics Inc. Washing machine and method for controlling the same
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