JP3968385B2 - Method for producing amino acid or peptide from protein using supercritical water, food, feed, microbial medium and pharmaceutical containing this protein degradation product - Google Patents
Method for producing amino acid or peptide from protein using supercritical water, food, feed, microbial medium and pharmaceutical containing this protein degradation product Download PDFInfo
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- JP3968385B2 JP3968385B2 JP10647596A JP10647596A JP3968385B2 JP 3968385 B2 JP3968385 B2 JP 3968385B2 JP 10647596 A JP10647596 A JP 10647596A JP 10647596 A JP10647596 A JP 10647596A JP 3968385 B2 JP3968385 B2 JP 3968385B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
【0001】
【発明の属する技術分野】
本発明は、蛋白質からのアミノ酸又はペプチドの製造方法に関するものであって、特に、蛋白質の分解を超臨界状態又は亜臨界状態の水で行うことにより、従来のような酸や酵素等の除去処理が不必要である蛋白質からのアミノ酸又はペプチドの製造方法及びこの蛋白質分解物を含有する食品、飼料、微生物培地並びに医薬に関する。
【0002】
【従来技術】
蛋白質からアミノ酸を製造する方法としては、蛋白質を酸触媒又は酵素を利用することにより加水分解する方法が知られている。
【0003】
また、酸触媒等を使用しない方法としては、蛋白質を、温度50〜350℃及び圧力250〜5000kg/cm2下に5〜60分間保持することを特徴とする蛋白質低分子化物の製造法が、最近、報告されている(特公平8ー17682号公報)。
【0004】
ところで、物質には固体、液体、気体の3つの状態があることはよく知られているところであるが、液体は、ある特定の圧力と温度を越えると、気体であるのか、液体であるのか区別することが難しい状態になり、種々の物質を溶解する点では液体的な挙動を、圧縮膨張の点では圧力によりその密度を任意に変えることができる等気体的な挙動を示す。
【0005】
超臨界水とは、水の臨界条件、すなわち、臨界温度374℃及び臨界圧力221気圧を越えた状態の水を意味する。この状態下では、これ以上いくら圧力を加えても液化することは不可能となる。物性上では、この状態の水、超臨界水は、気体や液体と呼べず、両者の中間の性質を有している。当然、気液の境はなくなり、超臨界水として単一相で存在する。
【0006】
超臨界水は、温度、圧力に依存して密度、粘度、誘電率、イオン積、及び拡散係数等の値が連続的に変化する。反応溶媒として重要な指標である溶解度は密度の増大とともに大きくなることが知られているが、溶解性に係わるもう1つの重要な要素は誘電率である。誘電率は密度の増大とともに大きくなり、温度の上昇につれて減少する。温度が充分に高ければ誘電率は非常に小さくなり、水はイオン間の静電気力を覆うことが殆どできなくなる。この条件下では、溶解しているイオン種の多くはイオン対として存在することとなる。したがって、超臨界水はこの場合、極性物質というよりも非極性物質として振舞うのである。
【0007】
このような状態にある流体は、液体や気体の通常の性質と異なることから、超臨界流体と称され、従来、超臨界液体クロマトグラフィ−等に利用されてきた。また、超臨界水によるフロン、PCBの加水分解なども研究されている。最近では、超臨界水によるバイオマスの分解反応についても研究され、超臨界水中でのリグニン系試料の低分子化、セルロ−スからのグルコ−スの生成等が報告されている(特開平5−31000)。この報告は、超臨界水が高分子化合物の分解に用いられることは示唆していると言えるかもしれないが、超臨界水を用いる反応は、高温、高圧というフロンやPCB等も分解されるという厳しい反応条件下に実施されるため、これを蛋白質の分解に利用した場合、反応が進みすぎてアミノ酸も分解されてしまう恐れが極めて大きい。
【0008】
したがって、蛋白質を超臨界水により加水分解することによりアミノ酸等を製造した報告はない。
【0009】
【発明が解決しようとする課題】
従来のアミノ酸等の製造方法では、酸を用いる場合、中和するためのアルカリ処理が必要であったり、好ましくない有機塩等の化合物が副生したりする。また、蛋白質分解酵素を用いる方法の場合は、酸分解に比べて食品として利用するにあたっての衛生上の問題はないが、分解率を上げるために蛋白質分解酵素を多量に必要とするという課題があった。
【0010】
本発明は、このような問題点の解決を図ったところの新規なアミノ酸やペプチドの製造方法及びこの蛋白質分解物を含有する食品、飼料、微生物培地並びに医薬を提供するものである。
【0011】
【課題を解決するための手段】
本発明者らは、超臨界水の特殊な物性に着目し、これを蛋白質からのアミノ酸やペプチドの製造に利用できないかと検討を続けてきた結果、その反応条件の厳しさにも拘わらず、特定の反応条件を採用すれば、アミノ酸やペプチドの製造が可能であることを見出し、本発明に至った。
【0012】
すなわち、本発明は、蛋白質からのアミノ酸又はペプチドの製造方法において、蛋白質の分解を超臨界状態又は亜臨界状態の水で行うことを特徴とする蛋白質の分解によるアミノ酸又はペプチドの製造方法及びこの蛋白質分解物を含有する食品、飼料、微生物培地並びに医薬である。
【0013】
本発明の特徴の一つは、反応時間等により得られる生成物が異なることである
。
【0014】
すなわち、アミノ酸を目的とする場合、超臨界状態又は亜臨界状態の水による蛋白質の分解は、300℃〜400℃、好ましくは350℃〜400℃の温度、221気圧〜1000気圧、好ましくは250気圧〜350気圧の圧力下に行われるが、反応時間は極めて短く、1秒〜40秒、好ましくは5秒〜30秒である。
【0015】
これに対して、ペプチドを目的とする場合、超臨界状態又は亜臨界状態の水による蛋白質の分解は、350℃〜400℃、好ましくは374℃〜400℃の温度、221気圧〜1000気圧、好ましくは250気圧〜350気圧の圧力下に行われるが、反応時間が比較的長く、4〜30分である。
【0016】
ところで、以下の実施例によると、実施例1では、400℃、300気圧、1分間以上の反応で生成アミノ酸が消滅していることが確認されているが、実施例2では、それ以上の激しい条件(400℃、392.4気圧、5分以上)であるが、アミノ酸は生成されていないにもかかわらず、意外にも、ペプチドが生成している。しかも、ペプチドであるLeu-Glyのピークはむしろ5分から20分と反応時間が長くなるほど大きくなっている。これは、超臨界条件下で安定なペプチドへの再結合が起こったものと推察される。
【0017】
超臨界水を用いる反応は、高温、高圧というフロンやPCB等も分解されるという厳しい反応条件下に実施されるため、これを蛋白質の加水分解に利用した場合、反応が進みすぎて生成したアミノ酸も分解され、アミノ酸等は到底取得することが出来ないであろうとするのが技術常識であった。
【0018】
このことは、蛋白質を高温、高圧下、例えば、350℃を超える処理を行うと、炭化されるとされていることからも窺い知れるところである(特公平8ー17682号公報)。
【0019】
したがって、本発明において、上記のような反応条件を選択することにより、アミノ酸やペプチド等を得ることが出来たということは全く予想外のことであって、このような点からみて、本発明は全く新しい技術を開発したものといえよう。
【0020】
また、本発明においては、最初はアミノ酸が生成するが、その後、一定時間経過した後、今度は、ペプチドが生成するということが起こるが、これは、いったん生成したアミノ酸が活性化され、再結合して超臨界条件下でも安定なペプチドを形成するためと推察されるが、このようなペプチドの生成は、一旦、アミノ酸の生成が確認できない時期があるだけに、全く予想外の生成反応であることが分かる。
【0021】
上記の本願発明の反応条件下では、水の密度は0.1〜0.8g/cm3となる。
【0022】
蛋白質としては、蛋白質を含有するものであるならばその種類を問わない。例えば、蛋白質を含有する天然資源、食用資源、廃棄物、生ゴミ等いずれでも良い。
【0023】
加水分解反応に用いる超臨界水は、通常の水、蒸留水、超純水等である。また、反応温度、圧力は水の状態図から算出される超臨界の周辺の範囲、すなわち亜臨界であればいずれも有効である。
【0024】
超臨界水の使用量は、蛋白質を分解するのに必要な量、すなわち、化学量論的量であれば十分であるが、通常は、溶媒を兼ねて、蛋白質1重量部に対し水3〜100重量部、好ましくは10〜50重量部使用される。
【0025】
その他、水の超臨界状態への移行を妨げない範囲での各種有機溶媒(メチルアルコ−ル、エチルアルコ−ル、アセトン等)の添加も有効である。
【0026】
また、反応に用いる容器は、ステンレス製の他、当該反応温度と圧力に耐えられるものはいずれでも可能である。また、加熱に用いる炉は、溶融塩を含むものの他、電気的に直接加熱するものも可能である。
【0027】
反応方式は、連続式でもバッチ式でも条件を満たせばいずれも可能である。
【0028】
従来の酵素等による蛋白質の分解では、ペプチド結合の内一定の結合しか切れないため、生成物に偏りや限界があったが、本発明方法では、蛋白質のペプチド結合全てが加水分解されるため、蛋白質を構成する全てのアミノ酸を得ることが出来る。
【0029】
例えば、トウモロコシ由来の蛋白質であるツェインを用いた場合、構成アミノ酸でないリジン以外のアミノ酸については、その量の多少はあるにせよ、全てを遊離回収することができる。
【0030】
したがって、本発明の蛋白質の分解により得られた生成物は、必須アミノ酸等数多くのアミノ酸やその再結合物と認められるペプチドを含有しており、栄養学上極めて有用であるので、食品、飼料、微生物培地、医薬等への適用が期待できる。
【0031】
【発明の実施の形態】
本発明の蛋白質の分解は、上記のような反応条件下で実施されるが、得られる反応生成物を食品、飼料、微生物培地、医薬等へ適用する場合、通常の配合手段を採用することにより行われる。
【0032】
以下、本発明の詳細を実施例で説明する。
【0033】
【実施例1】
蛋白質ツェインの加水分解によるアミノ酸の製造
ツェイン100mgを体積10.46cm3のステンレス(ステンレス316)容器に入れ、蒸留水5mlを加え、アルゴンガスで置換した後、容器を密封し、180℃〜500℃に加熱した溶融塩中に導入し、ほぼ瞬間的に超(亜)臨界温度以上に上昇させた。温度は反応管中に差し込んだハステロイ被覆の熱電対により測定した。圧力300気圧の条件下、200、250、300、350、400℃の各温度で、30秒間反応させた。また、400℃では1〜3分間の反応も行った。この反応液10μlを用い、日立製L8500型アミノ酸分析計によりアミノ酸を解析した。それらの結果を表1に示す。この結果、350℃でのアミノ酸の生成が最も多いことが明らかになった。
【0034】
【表1】
【実施例2】
蛋白質ツェインの分解によるペプチドの製造
ツェイン200mgを体積10.46cm3のステンレス(ステンレス316)容器に入れ、蒸留水5mlを加え、容器を密封し、400℃に加熱した溶融塩中に導入し、ほぼ瞬間的に臨界温度以上に上昇させた。温度は反応管中に差し込んだハステロイ被覆の熱電対により測定した。その結果、温度は400℃、圧力は392.4気圧、密度0.4777g/cm3で超臨界の条件を達成していることが明らかになった。5分後、反応管を氷水中に投入し、反応を終了させた。同様な操作を10分、20分行った。得られた透明な加水分解物から実施例1と同じ分離手段により、ペプチドを含有する反応液を得た。この反応液5μlを用い、高速液体クロマトグラフィ−により分析した。分析条件を下記に示す。また、その結果得られたクロマトグラムを図1〜3に示す。ツェイン分解物の分画物の一部をアミノ酸配列分析したところ、Leu-Ala-Ala (図1の3.962のピークのもの)や Leu-Gly (図1の12.713のピークのもの)等のペプチドが生成していた。
HPLC測定条件
カラム:ウオ−タ−ズ社製 μBondashpre 5μ C8-300A(3.9×150mm)
溶出液:0.1%トリフルオロ酢酸を含む1〜63%(20分)アセトニトリルの直線濃度勾配
流速 :1ml/min
検出 :210nmの吸収
【発明の効果】
▲1▼ 従来の酵素等による蛋白質の分解では、ペプチド結合の内一定の結合しか切れないため、生成物に偏りや限界があったが、本発明方法では蛋白質を構成する全てのアミノ酸を得ることが出来る。そのため、本発明の蛋白質の分解により得られた生成物は、必須アミノ酸等数多くのアミノ酸やその再結合物と認められるペプチドを含有するので栄養学上極めて有用であり、食品、飼料、微生物培地、医薬等への適用が可能となる。
【0035】
▲2▼ 従来の酵素等による蛋白質の分解では、最終的には反応に用いた酵素や緩衝液成分等を反応生成物から完全に除去する必要があるが、本発明ではこのような反応生成物の精製が不要である。
【0036】
▲3▼ 従来の酵素等による蛋白質の分解では、有害な酸や高価な酵素等を使用する必要があったが、本発明の水は化学的に安定、無毒、安価であり、従来の他の触媒より有利である。
【0037】
▲4▼ 本発明では、蛋白質なら全ての種類のものが分解できるので、生物系天然資源、有機産業廃棄物、生ゴミ等から有用物質を得ることができる。
【0038】
【図面の簡単な説明】
【図1】実施例2の反応時間5分のペプチド生成物の高速液体クロマトグラフィーにより分析したクロマトグラムである。
【図2】実施例2の反応時間10分のペプチド生成物の高速液体クロマトグラフィーにより分析したクロマトグラムである。
【図3】実施例2の反応時間20分のペプチド生成物の高速液体クロマトグラフィーにより分析したクロマトグラムである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing an amino acid or peptide from a protein, and in particular, by performing degradation of the protein with water in a supercritical state or a subcritical state, a conventional removal treatment of acids, enzymes, etc. The present invention relates to a method for producing an amino acid or peptide from a protein that is unnecessary, and foods, feeds, microbial media, and medicines containing the protein degradation product.
[0002]
[Prior art]
As a method for producing an amino acid from a protein, a method of hydrolyzing a protein using an acid catalyst or an enzyme is known.
[0003]
In addition, as a method not using an acid catalyst or the like, a method for producing a low molecular weight protein product characterized in that a protein is maintained at a temperature of 50 to 350 ° C. and a pressure of 250 to 5000 kg / cm 2 for 5 to 60 minutes, Recently, it has been reported (Japanese Patent Publication No. 8-17682).
[0004]
By the way, it is well known that a substance has three states of solid, liquid, and gas, but when a liquid exceeds a certain pressure and temperature, it is distinguished whether it is a gas or a liquid. It is difficult to do so, and exhibits a liquid behavior in terms of dissolving various substances, and an isogas behavior in which the density can be arbitrarily changed by pressure in terms of compression and expansion.
[0005]
Supercritical water means water in a state exceeding the critical condition of water, that is, a critical temperature of 374 ° C. and a critical pressure of 221 atm. Under this condition, it becomes impossible to liquefy no matter how much pressure is applied. In terms of physical properties, water in this state and supercritical water cannot be called gas or liquid, and have intermediate properties between them. Naturally, there is no boundary between gas and liquid, and it exists in a single phase as supercritical water.
[0006]
Supercritical water continuously changes in values such as density, viscosity, dielectric constant, ionic product, and diffusion coefficient depending on temperature and pressure. It is known that the solubility, which is an important indicator as a reaction solvent, increases with an increase in density, but another important factor related to solubility is the dielectric constant. The dielectric constant increases with increasing density and decreases with increasing temperature. If the temperature is high enough, the dielectric constant becomes very small and water can hardly cover the electrostatic force between ions. Under this condition, many of the dissolved ionic species will exist as ion pairs. Thus, supercritical water in this case behaves as a nonpolar substance rather than a polar substance.
[0007]
Since the fluid in such a state is different from the normal properties of liquids and gases, it is referred to as a supercritical fluid and has been conventionally used for supercritical liquid chromatography and the like. Research has also been conducted on the hydrolysis of CFCs and PCBs with supercritical water. Recently, the decomposition reaction of biomass by supercritical water has also been studied, and it has been reported that the molecular weight of lignin samples is reduced in supercritical water, the production of glucose from cellulose, etc. 31000). Although this report may suggest that supercritical water is used for the decomposition of polymer compounds, the reaction using supercritical water also decomposes chlorofluorocarbon, PCB, etc. at high temperature and high pressure. Since it is carried out under severe reaction conditions, when this is used for protein degradation, there is a great risk that the reaction will proceed too much and amino acids will be degraded.
[0008]
Therefore, there is no report of producing amino acids and the like by hydrolyzing proteins with supercritical water.
[0009]
[Problems to be solved by the invention]
In the conventional method for producing amino acids and the like, when an acid is used, an alkali treatment for neutralization is required, or an undesired compound such as an organic salt is by-produced. In the case of the method using a proteolytic enzyme, there is no sanitary problem in using it as a food compared to acid decomposition, but there is a problem that a large amount of proteolytic enzyme is required to increase the decomposition rate. It was.
[0010]
The present invention provides a novel method for producing amino acids and peptides, and foods, feeds, microbial media, and medicines containing the protein degradation product, in which such problems have been solved.
[0011]
[Means for Solving the Problems]
The present inventors have focused on the special physical properties of supercritical water, and have continued to study whether this can be used for the production of amino acids and peptides from proteins. It has been found that amino acids and peptides can be produced by adopting the reaction conditions, and the present invention has been achieved.
[0012]
Specifically, the present invention relates to a method for producing an amino acid or peptide from a protein, wherein the protein is decomposed with water in a supercritical state or a subcritical state, and the protein is decomposed. Foods, feeds, microbial media and pharmaceuticals containing degradation products.
[0013]
One of the features of the present invention is that the products obtained vary depending on the reaction time and the like.
[0014]
That is, for the purpose of amino acids, protein degradation with water in a supercritical state or subcritical state is performed at a temperature of 300 ° C. to 400 ° C., preferably 350 ° C. to 400 ° C., 221 atm to 1000 atm, preferably 250 atm. Although the reaction is carried out under a pressure of ˜350 atm, the reaction time is extremely short and is 1 second to 40 seconds, preferably 5 seconds to 30 seconds.
[0015]
On the other hand, when the peptide is intended, the decomposition of the protein with supercritical or subcritical water is 350 ° C. to 400 ° C., preferably 374 ° C. to 400 ° C., preferably 221 atm to 1000 atm. Is carried out under a pressure of 250 to 350 atmospheres, but the reaction time is relatively long and 4 to 30 minutes.
[0016]
By the way, according to the following example, in Example 1, it was confirmed that the produced amino acid disappeared by reaction at 400 ° C., 300 atmospheric pressure, 1 minute or more, but in Example 2, it was more intense than that. Under the conditions (400 ° C., 392.4 atmospheres, 5 minutes or more), although no amino acid was produced, a peptide was unexpectedly produced. Moreover, the peak of Leu-Gly, which is a peptide, is rather larger as the reaction time becomes longer, from 5 minutes to 20 minutes. This is inferred that rebinding to a stable peptide occurred under supercritical conditions.
[0017]
Since the reaction using supercritical water is carried out under severe reaction conditions such as high temperature and high pressure, such as chlorofluorocarbon and PCB, etc., it is used for the hydrolysis of proteins. It was a common technical knowledge that amino acids and the like could not be obtained.
[0018]
This is well known from the fact that when a protein is treated at a high temperature and high pressure, for example, at a temperature exceeding 350 ° C., it is carbonized (Japanese Patent Publication No. 8-17682).
[0019]
Therefore, in the present invention, it is completely unexpected that amino acids, peptides and the like could be obtained by selecting the reaction conditions as described above. From this point of view, the present invention It can be said that a completely new technology has been developed.
[0020]
In the present invention, an amino acid is initially produced, but after a certain period of time, a peptide is produced this time. This occurs when the produced amino acid is activated and recombined. It is surmised that it forms a stable peptide even under supercritical conditions, but the generation of such a peptide is a completely unexpected reaction because there is a time when the generation of amino acids cannot be confirmed. I understand that.
[0021]
Under the reaction conditions of the present invention, the water density is 0.1 to 0.8 g / cm 3 .
[0022]
Any protein may be used as long as it contains a protein. For example, any of natural resources containing protein, food resources, waste, garbage, etc. may be used.
[0023]
The supercritical water used for the hydrolysis reaction is ordinary water, distilled water, ultrapure water, or the like. In addition, the reaction temperature and pressure are both effective in the supercritical range calculated from the water phase diagram, that is, subcritical.
[0024]
The amount of supercritical water used is sufficient if it is necessary to decompose the protein, that is, a stoichiometric amount. Usually, it also serves as a solvent, and 3 to 3 parts of water per 1 part by weight of protein. 100 parts by weight, preferably 10 to 50 parts by weight are used.
[0025]
In addition, it is also effective to add various organic solvents (methyl alcohol, ethyl alcohol, acetone, etc.) within a range that does not hinder the transition of water to the supercritical state.
[0026]
In addition, the container used for the reaction can be made of stainless steel and can withstand the reaction temperature and pressure. Moreover, the furnace used for heating can be one that directly heats electrically in addition to one containing molten salt.
[0027]
The reaction method can be any of continuous type and batch type as long as the conditions are satisfied.
[0028]
In the conventional degradation of proteins by enzymes or the like, only a certain amount of peptide bonds can be broken, so the products have bias and limitations, but in the method of the present invention, all peptide bonds of proteins are hydrolyzed. All amino acids constituting the protein can be obtained.
[0029]
For example, when zein, which is a protein derived from corn, is used, all amino acids other than lysine that are not constituent amino acids can be recovered freely, although there are some amounts.
[0030]
Therefore, the product obtained by the degradation of the protein of the present invention contains many amino acids such as essential amino acids and peptides recognized as recombined products thereof, and is extremely useful in nutrition. It can be expected to be applied to microbial media and medicines.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
The decomposition of the protein of the present invention is carried out under the reaction conditions as described above. When the obtained reaction product is applied to foods, feeds, microbial media, pharmaceuticals, etc., by adopting a usual blending means. Done.
[0032]
Hereinafter, details of the present invention will be described with reference to Examples.
[0033]
[Example 1]
Production of amino acids by hydrolysis of protein zein 100 mg of zein is put into a 10.46 cm 3 stainless steel (stainless steel 316) container, 5 ml of distilled water is added, and the atmosphere is replaced with argon gas. It was introduced into the heated molten salt and raised almost instantaneously above the super (sub) critical temperature. The temperature was measured with a Hastelloy-coated thermocouple inserted into the reaction tube. The reaction was performed at 200, 250, 300, 350, and 400 ° C. for 30 seconds under a pressure of 300 atm. Moreover, reaction was also performed for 1-3 minutes at 400 degreeC. Using 10 μl of this reaction solution, amino acids were analyzed by Hitachi L8500 type amino acid analyzer. The results are shown in Table 1. As a result, it was clarified that the most amino acid was produced at 350 ° C.
[0034]
[Table 1]
[Example 2]
Production of peptides by degradation of protein zein 200 mg of zein is put into a 10.46 cm 3 stainless steel (stainless steel 316) container, 5 ml of distilled water is added, the container is sealed, and introduced into molten salt heated to 400 ° C, almost instantaneously The temperature was raised above the critical temperature. The temperature was measured with a Hastelloy-coated thermocouple inserted into the reaction tube. As a result, it became clear that supercritical conditions were achieved at a temperature of 400 ° C, a pressure of 392.4 atm, and a density of 0.4777 g / cm 3 . After 5 minutes, the reaction tube was poured into ice water to complete the reaction. The same operation was performed for 10 minutes and 20 minutes. A reaction solution containing a peptide was obtained from the obtained transparent hydrolyzate by the same separation means as in Example 1. The reaction mixture was analyzed by high performance liquid chromatography using 5 μl. The analysis conditions are shown below. Moreover, the chromatogram obtained as a result is shown to FIGS. A portion of the zein degradation product was analyzed for amino acid sequence, and Leu-Ala-Ala (the peak at 3.962 in FIG. 1) and Leu-Gly (the peak at 12.713 in FIG. 1). Etc. were produced.
HPLC measurement conditions Column: c o - data -'s Corp. μBondashpre 5μ C8-300A (3.9 × 150mm)
Eluent: Linear concentration gradient flow rate of 1 to 63% (20 minutes) acetonitrile containing 0.1% trifluoroacetic acid: 1 ml / min
Detection: 210 nm absorption [Effect of the invention]
(1) In the conventional degradation of proteins by enzymes, etc., only a certain amount of peptide bonds can be broken, so the products are biased and limited, but in the method of the present invention, all amino acids constituting the protein can be obtained. I can do it. Therefore, the product obtained by the degradation of the protein of the present invention is very useful nutritionally because it contains many amino acids such as essential amino acids and peptides recognized as recombined products thereof, such as food, feed, microbial medium, Application to medicine and the like becomes possible.
[0035]
{Circle around (2)} In the conventional degradation of proteins by enzymes or the like, it is necessary to finally remove the enzymes and buffer components used in the reaction from the reaction products. In the present invention, such reaction products Purification of is not necessary.
[0036]
(3) Degradation of proteins with conventional enzymes and the like required the use of harmful acids and expensive enzymes, but the water of the present invention is chemically stable, non-toxic and inexpensive, It is more advantageous than a catalyst.
[0037]
(4) In the present invention, all kinds of proteins can be decomposed if they are proteins, so that useful substances can be obtained from biological natural resources, organic industrial waste, garbage, etc.
[0038]
[Brief description of the drawings]
FIG. 1 is a chromatogram obtained by analyzing the peptide product of Example 2 with a reaction time of 5 minutes by high performance liquid chromatography.
FIG. 2 is a chromatogram obtained by analyzing the peptide product of Example 2 with a reaction time of 10 minutes by high performance liquid chromatography.
FIG. 3 is a chromatogram obtained by analyzing the peptide product of Example 2 with a reaction time of 20 minutes by high performance liquid chromatography.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10647596A JP3968385B2 (en) | 1996-04-04 | 1996-04-04 | Method for producing amino acid or peptide from protein using supercritical water, food, feed, microbial medium and pharmaceutical containing this protein degradation product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10647596A JP3968385B2 (en) | 1996-04-04 | 1996-04-04 | Method for producing amino acid or peptide from protein using supercritical water, food, feed, microbial medium and pharmaceutical containing this protein degradation product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09268166A JPH09268166A (en) | 1997-10-14 |
| JP3968385B2 true JP3968385B2 (en) | 2007-08-29 |
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| JP3624243B2 (en) * | 2000-08-21 | 2005-03-02 | 独立行政法人産業技術総合研究所 | Continuous protein degradation method |
| JP2004262899A (en) * | 2003-03-04 | 2004-09-24 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for recovering amino acids |
| JP2006028117A (en) * | 2004-07-20 | 2006-02-02 | Ishikawajima Harima Heavy Ind Co Ltd | Oligopeptide production method and apparatus |
| JP4904021B2 (en) * | 2005-06-09 | 2012-03-28 | 新田ゼラチン株式会社 | Collagen peptide-containing cosmetic composition and method for producing the same |
| JP4889286B2 (en) * | 2005-11-18 | 2012-03-07 | 日本ハム株式会社 | Low molecular weight protein and feed material or food material containing the same |
| KR20080055580A (en) * | 2006-12-15 | 2008-06-19 | 후지무라 츠쇼 가부시키가이샤 | Method for producing animal liquid feed using high temperature and high pressure water |
| JP4941996B2 (en) * | 2008-03-19 | 2012-05-30 | 地方独立行政法人北海道立総合研究機構 | Method for producing seasoning having the flavor of dried scallops |
| JP2010172202A (en) * | 2009-01-27 | 2010-08-12 | Nippon Meat Packers Inc | Method for producing feed |
| JP7276842B2 (en) * | 2019-07-24 | 2023-05-18 | G-8 International Trading 株式会社 | Method for producing meat dismantling residue soup |
| CN111018729A (en) * | 2019-12-03 | 2020-04-17 | 杭州三得农业科技有限公司 | Process for resolving protein and converting protein into amino acid by using sound barrier principle |
| JP6899027B1 (en) * | 2020-10-13 | 2021-07-07 | 株式会社 ゼンショーホールディングス | Method for producing solubilized product |
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