JP2015047121A - Method for production of d-amino acid - Google Patents
Method for production of d-amino acid Download PDFInfo
- Publication number
- JP2015047121A JP2015047121A JP2013180613A JP2013180613A JP2015047121A JP 2015047121 A JP2015047121 A JP 2015047121A JP 2013180613 A JP2013180613 A JP 2013180613A JP 2013180613 A JP2013180613 A JP 2013180613A JP 2015047121 A JP2015047121 A JP 2015047121A
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- Prior art keywords
- amino acid
- culture
- strain
- lactobacillus acidophilus
- mcc1847
- Prior art date
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Images
Abstract
Description
本発明は、乳酸菌を使用したＤ−アミノ酸の製造方法に関する。また、当該製造方法に適した新規乳酸菌に関する。当該方法により製造されるＤ−アミノ酸、又は新規乳酸菌の培養物は、医薬、医薬部外品、皮膚外用剤、化粧料、飲食品、食品添加物、及び飼料等の組成物に配合して利用することができる。 The present invention relates to a method for producing a D-amino acid using lactic acid bacteria. Moreover, it is related with the novel lactic acid bacteria suitable for the said manufacturing method. The culture of D-amino acid or a novel lactic acid bacterium produced by the method is used by blending it with a composition such as a pharmaceutical, a quasi-drug, an external preparation for skin, a cosmetic, a food or drink, a food additive, and a feed. can do.
アミノ酸には、Ｄ体、Ｌ体が存在するが、哺乳類の体内に存在するアミノ酸はＬ体がほとんどであると考えられてきた。しかし近年、測定技術の進歩により、いくつかのＤ―アミノ酸が人間の体内に存在することが明らかとなってきた。また、Ｄ−アミノ酸は、特徴的な生理作用を示し、当該生理作用は、Ｌ−アミノ酸とは異なること等が報告されている。 There are D-forms and L-forms of amino acids, but it has been considered that most of amino acids present in mammalian bodies are L-forms. However, in recent years, it has become clear that several D-amino acids are present in the human body due to advances in measurement technology. In addition, D-amino acids exhibit a characteristic physiological action, and it has been reported that the physiological action is different from that of L-amino acids.
Ｄ−アミノ酸に関する研究は、神経伝達やホルモン調節との関連といった生理学的、医学的な観点からのアプローチが主流であった。たとえば、Ｄ−セリンは、中枢神経系に偏在しており、ＮＭＤＡ受容体チャネルの分布と強い正の相関を示すことから、その作用が注目されている。ＮＭＤＡ受容体は、その機能が高まると、記憶、学習能力も高まることが知られている。そして、Ｄ−セリンまたはＤ−アラニンは、ＮＭＤＡ受容体活性を増強することが明らかとなっている（非特許文献１）。 Studies on D-amino acids have mainly been approaches from physiological and medical viewpoints such as the relationship with neurotransmission and hormone regulation. For example, D-serine is ubiquitous in the central nervous system and shows a strong positive correlation with the distribution of NMDA receptor channels. NMDA receptors are known to increase memory and learning ability as their functions increase. And it has become clear that D-serine or D-alanine enhances NMDA receptor activity (Non-patent Document 1).
Ｄ−アラニンは、血糖値の制御に関与すること（非特許文献２）、及び、コラーゲン産生促進作用を有すること（特許文献１）が知られている。また、Ｄ−プロリンは紫外線傷害を軽減することから、紫外線が関与するシワの抑制のみならず、医薬として白内障等への適用も期待されている（特許文献２）。 It is known that D-alanine is involved in the control of blood glucose level (Non-patent Document 2) and has a collagen production promoting action (Patent Document 1). In addition, since D-proline reduces UV damage, it is expected not only to suppress wrinkles involving UV light but also to be applied to cataract as a pharmaceutical (Patent Document 2).
Ｄ−アミノ酸はヒトの皮膚（角層）に存在し、加齢とともにＤ−アスパラギン酸が減少すること、及びＤ−アスパラギン酸がＬ−アスパラギン酸より優れた美肌効果を有することが明らかとなっている（非特許文献３）。上記効果から、現在は、Ｄ−アスパラギン酸を豊富に含む製品が市販されている。
Ｄ−アミノ酸が有する皮膚に対する効能としては、他にも、Ｄ−グルタミン酸が、経口投与により、シワ形成を軽減させることが知られている（特許文献３）。
It is clear that D-amino acid is present in human skin (stratum corneum), D-aspartic acid decreases with age, and D-aspartic acid has a skin beautifying effect superior to L-aspartic acid. (Non-patent Document 3). Because of the above effects, products rich in D-aspartic acid are currently on the market.
As other skin effects of D-amino acids, it is known that D-glutamic acid reduces wrinkle formation by oral administration (Patent Document 3).
Ｄ−リジン及びＬ−リジンは、どちらも肌への保湿作用を有しており、皮膚外用剤に配合可能である。さらに、Ｄ−リジンを含む皮膚外用剤は、光安定性に優れているという利点を有する（特許文献４）。 Both D-lysine and L-lysine have a moisturizing action on the skin, and can be blended in a skin external preparation. Furthermore, the external preparation for skin containing D-lysine has an advantage of excellent light stability (Patent Document 4).
Ｄ−アスパラギン酸は、松果体実質細胞に存在し、精巣ライディッヒ細胞のテストステロン産生の亢進などに関与することから、生殖機能の改善に関与する可能性が示唆されている（非特許文献４）。 D-aspartic acid is present in pineal parenchymal cells and is involved in enhancement of testosterone production in testicular Leydig cells, suggesting the possibility of being involved in the improvement of reproductive function (Non-patent Document 4). .
Ｄ−ヒスチジンは、食欲抑制による抗肥満作用を有することから、メタボリックコントロール等の体重コントロールに使用することが期待されている（非特許文献５）。 Since D-histidine has an anti-obesity action by suppressing appetite, it is expected to be used for weight control such as metabolic control (Non-patent Document 5).
また、人の体に働きかける作用の他にも、Ｄ−グルタミン酸は、防腐剤の防腐力低下を抑制することが知られている（特許文献５）。よって、化粧料及び食品、医薬等の組成物にＤ−グルタミン酸を配合することにより、防腐剤の量を減らすことができる。一般に、防腐剤には、皮膚刺激を起こしたり、発がん性が懸念されているものもあるため、防腐剤
を減らすことは、安全性の面で有益である。さらに、Ｄ−グルタミン酸の有益な生理作用も享受することができる。
In addition to the action acting on the human body, it is known that D-glutamic acid suppresses the decrease in the preservative power of the preservative (Patent Document 5). Therefore, the amount of the preservative can be reduced by blending D-glutamic acid in the composition of cosmetics, food, medicine and the like. In general, some preservatives cause skin irritation or carcinogenicity, and therefore reducing the preservatives is beneficial in terms of safety. Furthermore, the beneficial physiological action of D-glutamic acid can also be enjoyed.
一方、近年は、Ｄ−アミノ酸に関して、食品分野からのアプローチも始まっている。遊離のアミノ酸の味は、Ｌ体とＤ体とでは大きく異なることが知られているが、Ｌ体と同様にＤ体も風味改良剤として使用し得る（特許文献６）。そして、チーズ、ヨーグルト、黒酢又は日本酒等の発酵食品には、Ｄ−アミノ酸が豊富に含まれており、発酵食品の旨みの一役を担っていると考えられている。 On the other hand, in recent years, approaches from the food field have also begun for D-amino acids. It is known that the taste of free amino acids differs greatly between L-form and D-form, but D-form can be used as a flavor improver as well as L-form (Patent Document 6). And fermented foods such as cheese, yogurt, black vinegar or sake contain abundant D-amino acids and are considered to play a role in the taste of fermented foods.
非特許文献６は、生もと造りの日本酒は、含有されるＤ−アミノ酸濃度が高い傾向があり、それらＤ−アミノ酸は日本酒の旨味や総合評価を高めること、及び、それらＤ−アミノ酸は生もと由来の乳酸菌（Lactobacillus sakei等）が生産していることを、明らかに
している。しかし、ラクトバチルス・アシドフィルスがＤ−アミノ酸を生産していることに関する記載はない。
Non-Patent Document 6 shows that sake made from raw products tends to have a high concentration of D-amino acids, and these D-amino acids enhance the umami and overall evaluation of sake, and those D-amino acids are raw. It is clarified that lactic acid bacteria (Lactobacillus sakei etc.) derived from the origin are producing. However, there is no description regarding that Lactobacillus acidophilus produces D-amino acids.
上記のように、Ｄ−アミノ酸は、生理・生化学、食品学などに関係する研究から、さまざまな用途が期待されており、食品、医薬品、化粧料などの分野における新しい機能成分として使用されると考えられている。しかし、Ｄ−アミノ酸は光学活性を有するアミノ酸であり、光学的に純度の高いＤ−アミノ酸の製造は困難であることが知られている。 As described above, D-amino acids are expected to have various uses from research related to physiology / biochemistry, food science, and the like, and are used as new functional ingredients in the fields of food, pharmaceuticals, cosmetics, and the like. It is believed that. However, D-amino acids are optically active amino acids, and it is known that it is difficult to produce optically pure D-amino acids.
これまでに、乳酸菌等の微生物の細胞内には、多くのＤ−アミノ酸が存在することが報告されている（非特許文献７）。また、当該微生物または当該微生物が産生する酵素を用いて、Ｄ−アミノ酸を製造する方法が知られている（特許文献７、８）。しかし、微生物の体内に存在することが報告されているＤ体の種類は限られており、また、Ｌ体に対するＤ体の比率も高くないため、効率がいい方法とはいえない。さらに、Ｄ−アミノ酸は、医薬、医薬部外品、化粧料、食品、及び飼料等の材料として使用され得ることから、高純度のものが求められているところ、上記の方法では、微生物由来の不純物が少なからず混入する可能性があった。 So far, it has been reported that many D-amino acids are present in cells of microorganisms such as lactic acid bacteria (Non-patent Document 7). Moreover, the method of manufacturing D-amino acid using the said microorganism or the enzyme which the said microorganism produces is known (patent documents 7, 8). However, the types of D-forms that have been reported to exist in the body of microorganisms are limited, and the ratio of D-forms to L-forms is not high, so it cannot be said to be an efficient method. Furthermore, since D-amino acids can be used as materials for pharmaceuticals, quasi drugs, cosmetics, foods, feeds, and the like, high purity ones are required. There was a possibility that not a few impurities were mixed.
一方、ラクトバチルス・アシドフィルスは、これまでに、体脂肪蓄積抑制剤（特許文献９）、胃腸の鎮痛治療薬（特許文献１０）、呼吸器感染症治療薬（特許文献１１）、及びインフルエンザ治療剤（特許文献１２）等の様々な用途が知られており、これらの用途に基づいて、医薬、飲食品、飼料等の分野において使用されてきた。 On the other hand, Lactobacillus acidophilus has so far been a body fat accumulation inhibitor (Patent Document 9), a gastrointestinal analgesic drug (Patent Document 10), a respiratory infection drug (Patent Document 11), and an influenza drug. Various uses such as (Patent Document 12) are known, and based on these uses, they have been used in the fields of medicine, food and drink, feed, and the like.
本発明は、乳酸菌を用いて、高効率でＤ−アミノ酸を製造する方法を提供することを課題とする。また、当該Ｄ−アミノ酸の製造方法に、特に適した新規乳酸菌株を提供することを課題とする。 An object of the present invention is to provide a method for producing a D-amino acid with high efficiency using lactic acid bacteria. Another object of the present invention is to provide a novel lactic acid strain particularly suitable for the production method of the D-amino acid.
本発明者らは、上記の課題を解決すべく鋭意研究を行った結果、ラクトバチルス・アシドフィルスＭＣＣ１８４７株（受領番号：ＮＩＴＥ ＡＢＰ−０１６９５）が、高効率でＤ−アミノ酸を分泌することを見出し、本発明を完成するに至った。 As a result of intensive studies to solve the above problems, the present inventors have found that Lactobacillus acidophilus MCC1847 strain (reception number: NITE ABP-01695) secretes D-amino acids with high efficiency, The present invention has been completed.
すなわち、本発明は、以下の事項に関する。
［１］ラクトバチルス・アシドフィルス（Lactobacillus acidophilus）ＭＣＣ１８４７
株（受領番号：ＮＩＴＥ ＡＢＰ−０１６９５）を培地で培養する工程、及び、
前記培養後の培養物中に分泌されたＤ−アミノ酸と微生物とを分離し、かつ、Ｄ−アミノ酸を含む画分を培養物から回収する工程、
を含む、Ｄ−アミノ酸の製造方法。
［２］前記Ｄ−アミノ酸を含む画分の培養物からの回収を、培養物から微生物を除去した後に行う、［１］に記載の方法。
［３］前記Ｄ−アミノ酸を含む画分において微生物から分泌されたアミノ酸が、以下の（１）の関係式を満たすものである、［１］または［２］に記載の製造方法。
［Ｄ−アミノ酸分泌量］／（［Ｄ−アミノ酸分泌量］＋［Ｌ−アミノ酸分泌量］）≧０．５ ・・・・・・（１）
［４］前記Ｄ−アミノ酸が、Ｄ−ヒスチジン、Ｄ−セリン、Ｄ−アスパラギン酸、Ｄ−グルタミン酸、Ｄ−アラニン、及びＤ−リジンからなる群より選択される一または複数のＤ−アミノ酸である、［１］〜［３］のいずれかに記載の製造方法。
［５］単離されたラクトバチルス・アシドフィルス（Lactobacillus acidophilus）ＭＣ
Ｃ１８４７株（受領番号：ＮＩＴＥ ＡＢＰ−０１６９５）。
［６］［５］に記載の株を含有する培養物を含む、組成物。
［７］前記培養物は、Ｄ−アミノ酸を含む、［６］に記載の組成物。
That is, the present invention relates to the following matters.
[1] Lactobacillus acidophilus MCC1847
Culturing a strain (reception number: NITE ABP-01695) in a medium; and
Separating the D-amino acid secreted into the culture after the culture and the microorganism, and collecting a fraction containing the D-amino acid from the culture;
A process for producing a D-amino acid comprising:
[2] The method according to [1], wherein the fraction containing the D-amino acid is recovered from the culture after removing the microorganism from the culture.
[3] The production method according to [1] or [2], wherein the amino acid secreted from the microorganism in the fraction containing D-amino acid satisfies the following relational expression (1):
[D-amino acid secretion amount] / ([D-amino acid secretion amount] + [L-amino acid secretion amount]) ≧ 0.5 (1)
[4] The D-amino acid is one or more D-amino acids selected from the group consisting of D-histidine, D-serine, D-aspartic acid, D-glutamic acid, D-alanine, and D-lysine. , [1] to [3].
[5] Isolated Lactobacillus acidophilus MC
C1847 strain (reception number: NITE ABP-01695).
[6] A composition comprising a culture containing the strain according to [5].
[7] The composition according to [6], wherein the culture contains a D-amino acid.
本発明によれば、ラクトバチルス・アシドフィルスＭＣＣ１８４７株（受領番号：ＮＩＴＥ ＡＢＰ−０１６９５）を用いて、Ｄ−アミノ酸を製造することができる。
ラクトバチルス・アシドフィルスＭＣＣ１８４７株は、［Ｄ−アミノ酸分泌量］／（［Ｄ−アミノ酸分泌量］＋［Ｌ−アミノ酸分泌量］）の比率が高いため、高効率でＤ−アミノ酸を製造することができる。
さらに、ラクトバチルス・アシドフィルスに属する微生物は、長い食経験のある乳酸菌である。そのため、Ｄ−アミノ酸を含む画分から乳酸菌を分離除去しなくても、食品等の組成物に配合することができる。
According to the present invention, a D-amino acid can be produced using Lactobacillus acidophilus MCC1847 strain (reception number: NITE ABP-01695).
The Lactobacillus acidophilus MCC1847 strain has a high ratio of [D-amino acid secretion amount] / ([D-amino acid secretion amount] + [L-amino acid secretion amount]), and therefore can produce D-amino acids with high efficiency. it can.
Furthermore, microorganisms belonging to Lactobacillus acidophilus are lactic acid bacteria with a long dietary experience. Therefore, it can be blended in a composition such as food without separating and removing lactic acid bacteria from the fraction containing D-amino acid.
以下、本発明の好ましい実施態様について詳細に説明する。ただし、本発明は以下の好ましい実施態様に限定されず、本発明の範囲内で自由に変更することができるものである。 Hereinafter, preferred embodiments of the present invention will be described in detail. However, the present invention is not limited to the following preferred embodiments, and can be freely modified within the scope of the present invention.
ラクトバチルス（Ｌａｃｔｏｂａｃｉｌｌｕｓ）属に属する微生物は、乳酸菌と呼ばれており、ヨーグルト等の発酵乳製品においてスターター（種菌）として使用されている。乳酸菌は、発酵乳製品における腐敗細菌や病原細菌を抑える効果があり、製品の貯蔵性を高めているほか、風味を向上させたり、健康に寄与する効果を有することが知られている。
たとえば、乳酸菌は、腸内細菌の生育に大きな影響を与え、腸内環境を良好に保つ作用を有することが知られている。この乳酸菌は、人の腸内に、いわゆる善玉菌として生息し、腸内環境を維持している。腸内環境を整えることによって、免疫力が向上し、様々な病気に罹りにくくなったり、病状が改善されたりすることが期待されている。このことから、整腸作用や、免疫増強作用、及び発癌抑制作用等を有することが知られている。このため、乳酸菌は健康増進、又は疾患の予防若しくは治療を目的として、飲食品、医薬品等に広く利用されてきた。
A microorganism belonging to the genus Lactobacillus is called a lactic acid bacterium, and is used as a starter (seed fungus) in fermented milk products such as yogurt. Lactic acid bacteria have an effect of suppressing spoilage bacteria and pathogenic bacteria in fermented milk products, and are known to have an effect of improving the flavor and contributing to health in addition to enhancing the storability of the product.
For example, lactic acid bacteria are known to have a significant effect on the growth of intestinal bacteria and to maintain an excellent intestinal environment. The lactic acid bacteria live in the human intestine as so-called good bacteria and maintain the intestinal environment. By preparing the intestinal environment, it is expected that immunity will improve, making it difficult to suffer from various diseases and improving the medical condition. From this fact, it is known to have an intestinal regulating action, an immune enhancing action, a carcinogenesis suppressing action and the like. For this reason, lactic acid bacteria have been widely used in foods and drinks, pharmaceuticals, and the like for the purpose of promoting health or preventing or treating diseases.
本発明において使用されるラクトバチルス・アシドフィルスＭＣＣ１８４７株は、２０１３年８月２３日に、独立行政法人製品評価技術基盤機構特許微生物寄託センター（〒２９２−０８１８ 千葉県木更津市かずさ鎌足２−５−８ １２２号室）に、ブダペスト条約に基づき国際寄託されている（受領番号：ＮＩＴＥ ＡＢＰ−０１６９５）。
い。
The Lactobacillus acidophilus MCC1847 strain used in the present invention was issued on August 23, 2013 by the National Institute of Technology and Evaluation for Microorganisms (2-5 Kazusa Kamashichi, Kisarazu City, Chiba Prefecture 292-0818). 8 Room 122) is deposited internationally under the Budapest Treaty (reception number: NITE ABP-01695).
Yes.
ラクトバチルス・アシドフィルスＭＣＣ１８４７株は、Ｌ体よりもＤ体の分泌量が高い点で好ましい。
ラクトバチルス・アシドフィルスＭＣＣ１８４７株は、［Ｄ−アミノ酸分泌量］／（［Ｄ−アミノ酸分泌量］＋［Ｌ−アミノ酸分泌量］）の式により算出される値が、０．５以上、０．８以上、または１．０であり、高効率にＤ−アミノ酸を製造することが可能である。上記式に適用するアミノ酸分泌量は、式中の分母における分泌量の単位と、式中の分子における分泌量の単位とが同じであれば、どのような単位で表される値であってもよい。
The Lactobacillus acidophilus MCC1847 strain is preferable in that the amount of secretion of D-form is higher than that of L-form.
Lactobacillus acidophilus MCC1847 strain has a value calculated by the formula [D-amino acid secretion amount] / ([D-amino acid secretion amount] + [L-amino acid secretion amount]) of 0.5 or more, 0.8 As described above or 1.0, it is possible to produce a D-amino acid with high efficiency. As long as the secretory unit in the denominator in the formula and the secretory unit in the numerator in the formula are the same, the amino acid secretion applied to the above formula is a value expressed in any unit. Good.
本発明において使用される培地としては、ラクトバチルス・アシドフィルスに属する微生物を培養可能なものであれば制限されることなく用いることができ、公知の培地のなか
から適宜選択できる。具体的には、ＭＲＳ（de Man, Rogosa Sharpe）培地、ＡＢＣＭ（anaerobic bacterial culture medium）培地、ＲＣＡ（Reinforced clostridial agar）培地、ＢＬ（Blood Liver）培地、ＴＯＳプロピオン酸培地、ＧＡＭ（Gifu Anaerobic Medium）培地、ＥＧ（Eggerth-Gagnon）培地等が挙げられる。
また、当該培地として、乳牛、水牛、羊、山羊、ラクダ、インド牛、ヤク牛、馬、ロバ、トナカイ等の各種乳および乳製品や、ぬか床、野菜類、魚介類、米類等の食品も使用可能である。
The medium used in the present invention can be used without limitation as long as it can cultivate microorganisms belonging to Lactobacillus acidophilus, and can be appropriately selected from known mediums. Specifically, MRS (de Man, Rogosa Sharpe) medium, ABCM (anaerobic bacterial culture medium) medium, RCA (Reinforced clostridial agar) medium, BL (Blood Liver) medium, TOS propionic acid medium, GAM (Gifu Anaerobic Medium) Examples thereof include a medium and an EG (Eggerth-Gagnon) medium.
In addition, as the medium, various milk and dairy products such as dairy cows, buffaloes, sheep, goats, camels, Indian cattle, yak cattle, horses, donkeys, reindeers, foods such as bran beds, vegetables, seafood, rice Can also be used.
本発明における培養工程としては、ラクトバチルス・アシドフィルスに属する微生物を培養可能な公知の培養条件を採用することができる。たとえば、２５〜４５℃で培養することが可能であるが、３０〜４２℃で、特に３７〜４２℃で培養することにより、ラクトバチルス・アシドフィルスに属する微生物が良好に増殖するので好ましい。 As the culturing step in the present invention, known culturing conditions capable of culturing microorganisms belonging to Lactobacillus acidophilus can be employed. For example, it is possible to culture at 25 to 45 ° C., but culture at 30 to 42 ° C., particularly 37 to 42 ° C., is preferable because microorganisms belonging to Lactobacillus acidophilus grow well.
また、培養条件は、好気条件下、および嫌気条件下のいずれの条件で行っても良く、嫌気条件下で行うことが好ましい。なお、嫌気条件下で行う場合は、炭酸ガス等の嫌気ガスを通気しながら培養することができる。また、液体静置培養等の微好気条件下で培養することも可能である。 In addition, the culture condition may be any of aerobic conditions and anaerobic conditions, and is preferably performed under anaerobic conditions. In addition, when performing under anaerobic conditions, it can culture | cultivate, ventilating anaerobic gas, such as a carbon dioxide gas. It is also possible to culture under microaerobic conditions such as liquid stationary culture.
培養時間は、４〜７２時間の間で増殖速度を観察しながら適宜調節可能であるが、１６〜４８時間、特に１６〜２４時間であるとき、ラクトバチルス・アシドフィルスに属する微生物の増殖が定常期に達し、Ｄ−アミノ酸の産生量が最大に達するので好ましい。 The culture time can be appropriately adjusted while observing the growth rate between 4 and 72 hours, but when it is 16 to 48 hours, particularly 16 to 24 hours, the growth of microorganisms belonging to Lactobacillus acidophilus is stationary. This is preferable because the production amount of D-amino acid reaches the maximum.
一形態では、上記のような培養工程により、培養物中に分泌されたＤ−アミノ酸と、微生物とを分離し、かつ、Ｄ−アミノ酸を含む画分を培養物から回収する。Ｄ−アミノ酸と微生物との分離、及び培養物からのＤ−アミノ酸を含む画分の回収は、同時に行ってもよく、また、培養物から微生物を除去した後に、培養物からＤ−アミノ酸を含む画分を回収してもよい。 In one embodiment, the D-amino acid secreted into the culture and the microorganism are separated by the culture process as described above, and a fraction containing the D-amino acid is recovered from the culture. The separation of the D-amino acid and the microorganism and the collection of the fraction containing D-amino acid from the culture may be performed simultaneously, and after removing the microorganism from the culture, the D-amino acid is contained from the culture. Fractions may be collected.
培養物から微生物を分離する工程としては、例えば、膜によるろ過、遠心分離等が挙げられる。膜は、平膜及び中空糸膜（ホローファイバー）のいずれでもよい。中空糸膜（ホローファイバー）を使用してろ過を行った場合、Ｄ−アミノ酸と微生物との分離、及びＤ−アミノ酸を含む画分の培養物からの回収を、同時に行うことができる。 Examples of the step of separating the microorganism from the culture include filtration through a membrane and centrifugation. The membrane may be either a flat membrane or a hollow fiber membrane (hollow fiber). When filtration is performed using a hollow fiber membrane (hollow fiber), separation of D-amino acid and microorganism and recovery from a culture containing a D-amino acid can be performed simultaneously.
また、微生物を除去した培養物からＤ−アミノ酸を含む画分を回収する工程としては、Ｌ−アミノ酸について知られている方法を採用することができ、たとえば、イオン交換、ゲルろ過、逆相等の各種クロマトグラフィー、塩析、晶析、溶媒沈殿などの方法が挙げられる。これらの方法は、目的物であるＤ−アミノ酸の種類によって、適宜選択することができる。クロマトグラフィーは、低圧であっても高圧（HPLC）であってもよい。 Moreover, as a process of collect | recovering the fraction containing D-amino acid from the culture | cultivation which removed microorganisms, the method known about L-amino acid can be employ | adopted, for example, ion exchange, gel filtration, reverse phase, etc. Examples include various chromatography, salting out, crystallization, solvent precipitation, and the like. These methods can be appropriately selected depending on the type of D-amino acid that is the object. Chromatography may be low pressure or high pressure (HPLC).
Ｄ−アミノ酸を含む画分は、Ｄ−アミノ酸の効果を損なわず、かつ、微生物を含まない限り特に制限されず、培地成分を含んでいてもよく、完全に又は部分的に精製したものであってもよい。Ｄ−アミノ酸の精製は、上記のＤ−アミノ酸を含む画分を回収する方法を適宜組み合わせることによって行うことができる。
Ｄ−アミノ酸を含む画分の性状は特に制限されず、液体であってもよく、凍結乾燥等によって得られる粉体であってもよい。
The fraction containing D-amino acid is not particularly limited as long as it does not impair the effects of D-amino acid and does not contain microorganisms, and may contain a medium component, and may be completely or partially purified. May be. Purification of D-amino acids can be performed by appropriately combining the methods for recovering the above-mentioned fractions containing D-amino acids.
The properties of the fraction containing D-amino acid are not particularly limited, and may be a liquid or a powder obtained by lyophilization or the like.
Ｄ−アミノ酸を含む画分は、Ｄ−アミノ酸の効果を損なわない限り、Ｌ−アミノ酸を含んでいてもよいが、公知の分離精製方法を使用して、Ｄ−アミノ酸のみを分離精製してもよい。Ｄ−アミノ酸とＬ−アミノ酸の分離は、例えば、ジアステレオマー法、酵素法、またはクロマトグラフィー等を適宜選択することによって、またはそれらの方法を組み合わ
せることによって、行うことができる（例えば、特開２００５−００３５５８号公報、Kenji Hamase, et al., Journal of Chromatography A, 2010, Vol.1217, 1056-1062、または、浜瀬健司ら，「哺乳類体内微量Ｄ−アミノ酸の選択的分析法の開発」，分析化学，２００４年，Ｖｏｌ．５３，Ｎｏ．７，ｐ．６７７−６９０を参照）。
The fraction containing D-amino acid may contain L-amino acid as long as the effect of D-amino acid is not impaired, but even if only D-amino acid is separated and purified using a known separation and purification method. Good. Separation of D-amino acid and L-amino acid can be carried out, for example, by appropriately selecting a diastereomer method, an enzymatic method, chromatography, or the like, or by combining these methods (for example, JP 2005-003558, Kenji Hamase, et al., Journal of Chromatography A, 2010, Vol.1217, 1056-1062, or Kenji Hamase et al., “Development of a selective analysis method for trace D-amino acids in mammals”, Analytical Chemistry, 2004, Vol. 53, No. 7, p. 677-690).
当該クロマトグラフィーとしては、光学異性体を分離するための方法として知られているものを適宜選択すればよく、たとえば、固定相に結合させた光学活性なコンポーネントとジアステレオメリック複合体を形成させることにより、目的とするエナンチオマーを分取するキラル固定相法、移動相溶媒に適当な光学活性化合物を添加することにより行うキラル移動相法、エナンチオマーに対し適当な光学活性誘導体化試薬を反応させてジアステレオマーに変換してから通常の分離系に供するキラル誘導体化法等を適宜組み合わせることによって、Ｄ−アミノ酸の分離精製を行うことができる。 The chromatography may be appropriately selected from those known as methods for separating optical isomers, for example, forming a diastereomeric complex with an optically active component bonded to a stationary phase. The chiral stationary phase method for fractionating the desired enantiomer, the chiral mobile phase method by adding an appropriate optically active compound to the mobile phase solvent, and the reaction of the enantiomer with an appropriate optically active derivatization reagent. Separation and purification of D-amino acids can be performed by appropriately combining a chiral derivatization method or the like that is subjected to a normal separation system after being converted to a stereomer.
発明者らは、Ｄ−アミノ酸の製造に特に適しているラクトバチルス・アシドフィルス株を探究した結果、自然源から新規なＭＣＣ１８４７株を発見した。ＭＣＣ１８４７株は、日本国内の自然源から得られたものである。
ＭＣＣ１８４７株は、Ｌ−アミノ酸と比較したＤ−アミノ酸の分泌比率の高さに加えて、分泌するＤ−アミノ酸の種類の豊富さの点で好ましい。
As a result of searching for Lactobacillus acidophilus strains that are particularly suitable for the production of D-amino acids, the inventors have discovered a novel strain MCC1847 from natural sources. MCC1847 strain was obtained from a natural source in Japan.
The MCC1847 strain is preferable in terms of the abundance of types of secreted D-amino acids in addition to the high secretion ratio of D-amino acids compared to L-amino acids.
ＭＣＣ１８４７株は、ラクトバチルス・アシドフィルスの標準株と同様に、通常の乳酸菌培養条件で生育可能である。例えば、ＭＲＳ液体培地にて３７℃の培養で良好な生育を示す。また、塗布用培地としては、一般的に菌数測定に用いられる条件であるＭＲＳ寒天培地での嫌気培養によって、コロニーを形成することができる。 Similar to the standard strain of Lactobacillus acidophilus, the MCC1847 strain can grow under normal lactic acid bacteria culture conditions. For example, it shows good growth when cultured at 37 ° C. in an MRS liquid medium. Moreover, as a culture medium for application | coating, a colony can be formed by the anaerobic culture on the MRS agar medium which is the conditions generally used for a count of bacteria.
ラクトバチルス・アシドフィルスＭＣＣ１８４７株は、円形末端をもつ桿菌で、単独、一組、あるいは短鎖状に増殖する。その他の菌学的性質を、表１に示す。表１における糖発酵性については、細菌同定キットＡＰＩ５０ＣＨ（ｂｉｏＭｅｒｉｅｕｘ Ｊａｐａｎ
製）を用い、添付のマニュアルに記載された方法に従って測定した。すなわち、一晩培養後のラクトバチルス・アシドフィルスＭＣＣ１８４７株培養液を各糖質を含む培地に接種し、これを３７℃のインキュベータ内で培養し、培養開始から２日目に各糖質の利用性を判定した。
Lactobacillus acidophilus MCC1847 strain is a koji mold having a circular end and grows singly, in pairs, or in a short chain shape. Other mycological properties are shown in Table 1. About sugar fermentability in Table 1, bacteria identification kit API50CH (bioMerieux Japan)
And manufactured according to the method described in the attached manual. That is, the Lactobacillus acidophilus MCC1847 culture solution after overnight culture was inoculated into a medium containing each saccharide, and this was cultured in an incubator at 37 ° C., and the utilization of each saccharide was performed on the second day from the start of the culture. Was judged.
また、ラクトバチルス・アシドフィルスＭＣＣ１８４７株の１６ＳｒＲＮＡ遺伝子の全領域１５７２ｂｐについて公知の手法により解読を行なった。解読されたラクトバチルス・アシドフィルスＭＣＣ１８４７株の１６ＳｒＲＮＡ遺伝子の塩基配列（配列番号１）は、ラクトバチルス・アシドフィルスＬａ−１４株又はＮＣＦＭ株の１６ＳｒＲＮＡ遺伝子の塩基配列と１００％の相同性を示した。 Further, the entire region 1572 bp of the 16S rRNA gene of Lactobacillus acidophilus MCC1847 strain was decoded by a known method. The decoded base sequence of 16S rRNA gene of Lactobacillus acidophilus MCC1847 strain (SEQ ID NO: 1) showed 100% homology with the base sequence of 16S rRNA gene of Lactobacillus acidophilus La-14 strain or NCFM strain.
自然源から分離された新規株であるラクトバチルス・アシドフィルスＭＣＣ１８４７株は、上記菌学的性質、及び１６ＳｒＲＮＡ遺伝子の塩基配列の相同性から、ラクトバチルス・アシドフィルスに属する株であると同定した。 Lactobacillus acidophilus MCC1847, a new strain isolated from natural sources, was identified as a strain belonging to Lactobacillus acidophilus based on the above bacteriological properties and the homology of the base sequence of the 16S rRNA gene.
ラクトバチルス・アシドフィルスＭＣＣ１８４７株を培養し、培養物中に分泌されたＤ−アミノ酸は、Ｄ−アミノ酸が有する生理作用を期待するのみならず、矯味等の様々な目的で、医薬、医薬部外品、皮膚外用剤、化粧料、飲食品、食品添加剤及び飼料等の組成物に配合することができる。当該組成物に配合されるＤ−アミノ酸とは、単離精製したＤ−アミノ酸、Ｄ−アミノ酸を含む画分のいずれであってもよい。 Lactobacillus acidophilus MCC1847 strain is cultured, and the D-amino acid secreted into the culture is not only expected to have the physiological action of D-amino acid, but also for various purposes such as taste masking, pharmaceuticals, quasi drugs It can be blended in compositions such as skin external preparations, cosmetics, foods and drinks, food additives and feeds. The D-amino acid compounded in the composition may be an isolated and purified D-amino acid or a fraction containing D-amino acid.
また、ラクトバチルス・アシドフィルスＭＣＣ１８４７株の培養物は、そのまま医薬、医薬部外品、皮膚外用剤、化粧料、飲食品、食品添加剤及び飼料等の組成物に配合してもよいし、分離・精製を行ってもよい。分離・精製手段としては、これまでに述べた公知の方法が利用可能である。このように、当該培養物を組成物に配合する場合においては、当該培養物には、微生物が含まれていても、含まれていなくてもよい。しかし、微生物を含有する培養物を組成物に配合した場合は、当該微生物が有する生理作用も期待できる点で好ましい。 In addition, the culture of Lactobacillus acidophilus MCC1847 strain may be directly blended into a composition such as a medicine, quasi-drug, external preparation for skin, cosmetics, food and drink, food additive, and feed. Purification may be performed. As the separation / purification means, the known methods described so far can be used. Thus, when the culture is blended with the composition, the culture may or may not contain microorganisms. However, when a culture containing microorganisms is added to the composition, it is preferable in that the physiological action of the microorganisms can be expected.
また、当該培養物には、微生物が分泌するＤ−アミノ酸が含まれていても、含まれていなくてもよい。しかし、Ｄ−アミノ酸が含まれていると、Ｄ−アミノ酸が有する生理作用を享受できる点で好ましい。また、当該培養物には、培養培地が含まれていても、含まれていなくてもよい。 The culture may or may not contain D-amino acids secreted by microorganisms. However, it is preferable that a D-amino acid is contained in that the physiological action of the D-amino acid can be enjoyed. The culture may or may not contain a culture medium.
本発明により製造されるＤ−アミノ酸、またはラクトバチルス・アシドフィルスＭＣＣ１８４７株を含有する培養物は、一態様として、医薬、医薬部外品、皮膚外用剤又はそれらの有効成分として利用することができ、Ｄ−アミノ酸もしくは培養物をそのまま、又はそれらを医薬的に許容される賦形剤等と組み合わせて、経口的にまたは経皮的にヒトを含む哺乳動物に投与することができる。 The culture containing the D-amino acid or Lactobacillus acidophilus MCC1847 strain produced according to the present invention can be used as a pharmaceutical, a quasi-drug, an external preparation for skin, or an active ingredient thereof, as one aspect. The D-amino acid or culture can be administered to mammals including humans orally or transdermally as it is or in combination with pharmaceutically acceptable excipients or the like.
医薬、医薬部外品又は皮膚外用剤の製剤形態は特に限定されず、錠剤（糖衣錠、腸溶性コーティング錠、バッカル錠を含む）、散剤、カプセル剤（腸溶性カプセル、ソフトカプセルを含む）、顆粒剤（コーティングしたものを含む）、丸剤、トローチ剤、封入リポソーム剤、液剤、軟膏剤、貼付剤又はこれらの製剤学的に許容され得る徐放製剤等を例示することができる。 The form of pharmaceutical, quasi-drug or external preparation for skin is not particularly limited, and tablets (including sugar-coated tablets, enteric-coated tablets, buccal tablets), powders, capsules (including enteric capsules and soft capsules), granules (Including coated ones), pills, troches, encapsulated liposomes, solutions, ointments, patches, or pharmaceutically acceptable sustained release formulations thereof.
製剤化にあたっては、医薬的に許容される各種賦形剤を使用できる。たとえば、担体、結合剤、崩壊剤、滑沢剤、安定剤、矯味矯臭剤、希釈剤、界面活性剤、溶剤等の賦形剤を使用できる。
また、Ｄ−アミノ酸又は培養物は、他の医薬、医薬部外品又は皮膚外用剤と併用されてもよい。併用する医薬、医薬部外品又は皮膚外用剤は、Ｄ−アミノ酸または培養物を含む製剤中に、有効成分の一つとして含有させてもよいし、製剤中には含有させずに別個の製剤として組み合わせて商品化してもよい。
In the formulation, various pharmaceutically acceptable excipients can be used. For example, excipients such as carriers, binders, disintegrants, lubricants, stabilizers, flavoring agents, diluents, surfactants and solvents can be used.
In addition, the D-amino acid or the culture may be used in combination with other medicines, quasi drugs, or skin external preparations. The pharmaceutical, quasi-drug, or skin external preparation to be used in combination may be contained as one of the active ingredients in the preparation containing D-amino acid or culture, or it may be contained separately in the preparation without being included in the preparation. May be combined and commercialized.
上記の医薬、医薬部外品または皮膚外用剤に用いる担体としては、乳糖、ブドウ糖、白糖、マンニトール、馬鈴薯澱粉、トウモロコシ澱粉、炭酸カルシウム、リン酸カルシウム、硫酸カルシウム、結晶セルロース、カンゾウ末、ゲンチアナ末等を、結合剤としては例えば澱粉、ゼラチン、シロップ、ポリビニルアルコール、ポリビニルエーテル、ポリビニルピロリドン、ヒドロキシプロピルセルロース、エチルセルロース、メチルセルロース、カルボキシメチルセルロース等を、それぞれ例示することができる。 Carriers used in the above pharmaceuticals, quasi drugs or topical skin preparations include lactose, glucose, sucrose, mannitol, potato starch, corn starch, calcium carbonate, calcium phosphate, calcium sulfate, crystalline cellulose, licorice powder, gentian powder, etc. Examples of the binder include starch, gelatin, syrup, polyvinyl alcohol, polyvinyl ether, polyvinyl pyrrolidone, hydroxypropyl cellulose, ethyl cellulose, methyl cellulose, carboxymethyl cellulose, and the like.
また、崩壊剤としては、澱粉、寒天、ゼラチン末、カルボキシメチルセルロースナトリウム、カルボキシメチルセルロースカルシウム、結晶セルロース、炭酸カルシウム、炭酸水素ナトリウム、及びアルギン酸ナトリウム等を例示することができる。 Examples of the disintegrant include starch, agar, gelatin powder, sodium carboxymethyl cellulose, carboxymethyl cellulose calcium, crystalline cellulose, calcium carbonate, sodium bicarbonate, and sodium alginate.
更に、滑沢剤としては、ステアリン酸マグネシウム、水素添加植物油、及びマクロゴール等、着色剤としては医薬品に添加することが許容されている赤色２号、黄色４号、及び青色１号等を例示することができる。 Furthermore, examples of lubricants include magnesium stearate, hydrogenated vegetable oil, and macrogol, and examples of colorants include red No. 2, yellow No. 4, and blue No. 1 that are allowed to be added to pharmaceuticals. can do.
錠剤及び顆粒剤は、必要に応じ、白糖、ヒドロキシプロピルセルロース、精製セラック、ゼラチン、ソルビトール、グリセリン、エチルセルロース、ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、ポリビニルピロリドン、フタル酸セルロースアセテート、ヒドロキシプロピルメチルセルロースフタレート、メチルメタクリレート、及びメタアクリル酸重合体等により被膜することもできる。 Tablets and granules are sucrose, hydroxypropylcellulose, purified shellac, gelatin, sorbitol, glycerin, ethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, polyvinylpyrrolidone, cellulose phthalate acetate, hydroxypropylmethylcellulose phthalate, methyl methacrylate as necessary And a methacrylic acid polymer.
上記の医薬、医薬部外品または皮膚外用剤は、Ｄ−アミノ酸またはラクトバチルス・アシドフィルスに属する微生物が有する生理作用に基づいて、様々な医薬に使用し得る。例えば、記憶力・学習能力改善剤、血糖値抑制剤、抗老化剤、保湿用皮膚外用剤、生殖機能改善剤、体脂肪蓄積抑制剤、胃腸の鎮痛治療薬、呼吸器感染症治療薬、インフルエンザ治療剤、皮膚保湿剤、シワ形成抑制剤、又は美肌剤等に使用可能である。 The pharmaceutical, quasi-drug or external preparation for skin can be used for various pharmaceuticals based on the physiological action of microorganisms belonging to D-amino acids or Lactobacillus acidophilus. For example, memory / learning ability improving agent, blood sugar level inhibitor, anti-aging agent, skin external preparation for moisturizing, reproductive function improving agent, body fat accumulation inhibitor, gastrointestinal analgesic drug, respiratory infection drug, influenza therapy It can be used as an agent, skin moisturizer, wrinkle formation inhibitor, or skin beautifier.
化粧料に配合する場合は、Ｄ−アミノ酸、又はラクトバチルス・アシドフィルスＭＣＣ１８４７株を含有する培養物の効果を損なわない範囲において、通常の化粧料に使用され得る添加剤等を配合し、各種の形態で調製することができる。 When blended in cosmetics, D-amino acids or Lactobacillus acidophilus MCC1847 strains are added to the various cosmetics in the range that does not impair the effects of the culture. Can be prepared.
本発明の化粧料とは、例えば、局所又は全身用の皮膚洗浄料、皮膚化粧料又は薬用化粧料類、浴湯に投じて使用する浴用剤、洗口剤又は含嗽剤等の口腔用剤などを意味する。その製剤形態は特に限定されず、目的、用法に応じて適宜選択できる。例えば、化粧水、乳液、クリーム、軟膏、ジェル、ローション、オイル、パック、ミスト、顔面用化粧シートマスクなどの基礎化粧料、ひげ剃り用剤、洗顔料、皮膚洗浄料、シャンプー、リンス、ヘアートリートメント、整髪料、パーマ剤、ヘアートニック、染毛料、育毛・養毛料などの頭髪化粧料、ファンデーション、口紅、頬紅、アイシャドウ、アイライナー、マスカラなどのメークアップ化粧料、香水類、制汗剤、入浴剤、マウスウォッシュ、歯磨き剤、口中清涼剤等が挙げられる。 The cosmetics of the present invention include, for example, topical or systemic skin cleansers, skin cosmetics or medicinal cosmetics, bath preparations used in bath water, oral preparations such as mouthwashes or gargles, etc. Means. The formulation form is not particularly limited, and can be appropriately selected depending on the purpose and usage. For example, basic cosmetics such as lotion, emulsion, cream, ointment, gel, lotion, oil, pack, mist, facial cosmetic sheet mask, shaving agent, facial cleanser, skin cleanser, shampoo, rinse, hair treatment Hair cosmetics such as hairdressing, perm, hair art, hair dye, hair growth and hair nourishing, makeup cosmetics such as foundation, lipstick, blusher, eye shadow, eyeliner, mascara, perfume, antiperspirant, Examples include bathing agents, mouthwashes, toothpastes, mouth fresheners, and the like.
飲食品に配合する場合は、Ｄ−アミノ酸又はラクトバチルス・アシドフィルスＭＣＣ１８４７株を含有する培養物の効果を損なわず、経口摂取できるものであれば形態や性状は特に制限されず、通常飲食品に用いられる原料を用いて通常の方法によって製造することができる。また、本発明において使用されるラクトバチルス・アシドフィルスに属する微生物は、長い食経験のある所謂乳酸菌であるため、微生物を含んだままで配合することも可能である。 When blended in foods and drinks, the form and properties are not particularly limited as long as they can be taken orally without impairing the effects of cultures containing D-amino acids or Lactobacillus acidophilus MCC1847 strain. It can manufacture by a normal method using the raw material obtained. Moreover, since the microorganisms belonging to Lactobacillus acidophilus used in the present invention are so-called lactic acid bacteria having a long dietary experience, it is possible to mix them while containing the microorganisms.
上記のような飲食品としては、液状、ペースト状、カプセル状、ゼリー状、ゲル状固体、粉末等の形態を問わず、錠菓、流動食等のほか、例えば、パン類、めん類、ケーキミッ
クス、から揚げ粉、パン粉等の小麦粉製品；即席めん、カップめん、レトルト・調理食品、調理缶詰め、電子レンジ食品、即席スープ・シチュー、即席みそ汁・吸い物、スープ缶詰め、フリーズ・ドライ食品、その他の即席食品等の即席食品類；農産缶詰め、果実缶詰め、ジャム・マーマレード類、漬物、煮豆類、農産乾物類、シリアル（穀物加工品）等の農産加工品；水産缶詰め、魚肉ハム・ソーセージ、水産練り製品、水産珍味類、つくだ煮類等の水産加工品；畜産缶詰め・ペースト類、畜肉ハム・ソーセージ等の畜産加工品；加工乳、乳飲料、ヨーグルト類、乳酸菌飲料類、チーズ、アイスクリーム類、調製粉乳類、クリーム、その他の乳製品等の乳・乳製品；バター、マーガリン類、植物油等の油脂類；しょうゆ、みそ、ソース類、トマト加工調味料、みりん類、食酢類等の基礎調味料；調理ミックス、カレーの素類、たれ類、ドレッシング類、めんつゆ類、スパイス類、その他の複合調味料等の複合調味料・食品類；素材冷凍食品、半調理冷凍食品、調理済冷凍食品等の冷凍食品；キャラメル、キャンディー、チューインガム、チョコレート、クッキー、ビスケット、ケーキ、パイ、スナック、クラッカー、和菓子、米菓子、豆菓子、デザート菓子、ゼリー、その他の菓子などの菓子類；炭酸飲料、天然果汁、果汁飲料、果汁入り清涼飲料、果肉飲料、果粒入り果実飲料、野菜系飲料、豆乳、豆乳飲料、コーヒー飲料、お茶飲料、粉末飲料、濃縮飲料、スポーツ飲料、栄養飲料、アルコール飲料、その他の嗜好飲料等の嗜好飲料類、ベビーフード、ふりかけ、お茶潰けのり等のその他の市販食品等；育児用調製粉乳；経腸栄養食；機能性食品（特定保健用食品、栄養機能食品）等が挙げられる。
The foods and drinks as described above are not limited to liquids, pastes, capsules, jellies, gels, solids, powders, etc. In addition to tablets, liquid foods, etc., for example, breads, noodles, cake mixes Flour products such as fried powder, bread crumbs, instant noodles, cup noodles, retort / cooked food, cooking canned food, microwave food, instant soup / stew, instant miso soup / soup, canned soup, freeze-dried food, other instant foods Instant foods such as: Canned agricultural products, canned fruits, jams / marmalades, pickles, boiled beans, dried agricultural products, processed cereals (cereal processed products); canned fish, fish ham / sausage, fish paste, marine products Processed marine products such as delicacies and simmered fish; livestock canned and pasted products; processed livestock products such as meat ham and sausage; processed milk, milk drinks, yogurts, Milk and dairy products such as acid bacteria beverages, cheese, ice cream, formula milk powder, cream and other dairy products; fats and oils such as butter, margarines, vegetable oils; soy sauce, miso, sauces, processed tomato seasonings , Mirins, basic seasonings such as vinegar; cooking mixes, curry ingredients, sauces, dressings, noodle soups, spices, and other complex seasonings and foods; frozen foods, Frozen foods such as semi-cooked frozen foods and cooked frozen foods; caramel, candy, chewing gum, chocolate, cookies, biscuits, cakes, pie, snacks, crackers, Japanese confectionery, rice confectionery, bean confectionery, dessert confectionery, jelly, other confectionery Sweets such as carbonated drink, natural fruit juice, fruit juice drink, soft drink with fruit juice, fruit drink, fruit drink with fruit granules, vegetable drink, soy milk, beans Beverages, coffee beverages, tea beverages, powdered beverages, concentrated beverages, sports beverages, nutritional beverages, alcoholic beverages, other beverages such as other beverages, baby food, sprinkles, other marketed foods such as tea crush paste, etc .; Examples include infant formulas; enteral nutrition; functional foods (special health foods, nutritional functional foods) and the like.
食品添加物として用いる場合には、Ｄ−アミノ酸、又はラクトバチルス・アシドフィルスＭＣＣ１８４７株を含有する培養物の効果を損なわず、経口摂取できるものであれば、形態や性状は特に制限されず、通常食品添加物に用いられる原料を用いて通常の方法によって製造することができる。 When used as a food additive, the form and properties are not particularly limited as long as they can be taken orally without impairing the effects of the culture containing D-amino acid or Lactobacillus acidophilus MCC1847 strain. It can manufacture by a normal method using the raw material used for an additive.
さらに、Ｄ−アミノ酸、又はラクトバチルス・アシドフィルスＭＣＣ１８４７株を含有する培養物は、飼料中に含有させることも可能である。
飼料の形態としては特に制限されず、例えば、トウモロコシ、小麦、大麦、ライ麦、マイロ等の穀類；大豆油粕、ナタネ油粕、ヤシ油粕、アマニ油粕等の植物性油粕類；フスマ、麦糠、米糠、脱脂米糠等の糠類；コーングルテンミール、コーンジャムミール等の製造粕類；魚粉、脱脂粉乳、ホエイ、イエローグリース、タロー等の動物性飼料類；トルラ酵母、ビール酵母等の酵母類；第三リン酸カルシウム、炭酸カルシウム等の鉱物質飼料；油脂類；単体アミノ酸；糖類等を配合することにより製造できる。飼料の形態としては、例えば、ペットフード、家畜飼料、養魚飼料等が挙げられる。
Furthermore, the culture containing D-amino acid or Lactobacillus acidophilus MCC1847 can be contained in the feed.
The form of the feed is not particularly limited, for example, grains such as corn, wheat, barley, rye, milo; vegetable oils such as soybean oil meal, rapeseed oil meal, coconut oil meal, linseed oil meal; bran, wheat straw, rice bran, Dehydrated rice bran, etc .; Manufactured deer such as corn gluten meal, corn jam meal; Animal feed such as fish meal, non-fat dry milk, whey, yellow grease, tallow; Yeasts such as torula yeast, beer yeast; It can be produced by blending mineral feed such as calcium phosphate and calcium carbonate; fats and oils; simple amino acids; sugars and the like. Examples of the form of the feed include pet food, livestock feed, and fish feed.
以下に、実施例を用いて本発明をさらに具体的に説明するが、本発明はこれら実施例に限定されるものではない。 Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to these examples.
〔試験例１〕
ラクトバチルス・アシドフィルスＭＣＣ１８４７株を、ＭＲＳ（de Man Rogasa Sharpe）培地（Ｄｉｆｃｏ（登録商標）製品、日本ベクトン・ディッキンソン社より入手）3 mL
で、嫌気的に37℃で一晩（16時間）培養した。培地は0.22μmフィルターにてろ過して乳酸菌を除去し、得られた培養上清を冷蔵にて保存した。
[Test Example 1]
Lactobacillus acidophilus MCC1847 strain, MRS (de Man Rogasa Sharpe) medium (Difco (registered trademark) product, obtained from Nippon Becton Dickinson) 3 mL
Then, the cells were anaerobically cultured at 37 ° C. overnight (16 hours). The medium was filtered through a 0.22 μm filter to remove lactic acid bacteria, and the resulting culture supernatant was stored in a refrigerator.
上記培養上清中のアミノ酸は、4-Fluoro-7-nitro-2,1,3-benzoxadiaxole(NBD-F)を用いて蛍光誘導体とし、これをHPLCにて分析した。具体的には、培養上清 1 mLを減圧下にお
いて風乾させ、得られた固形分をホウ酸ナトリウム緩衝液（pH8.2）20 μLに溶解した。
次いで、5 μLの40 mM NBD-F/アセトニトリル溶液を加え、60℃にて2分間インキュベートし、2%トリフルオロ酢酸水溶液75 μLに溶解した反応液2 μLを、HPLCに供した。
The amino acid in the culture supernatant was converted to a fluorescent derivative using 4-Fluoro-7-nitro-2,1,3-benzoxadiaxole (NBD-F) and analyzed by HPLC. Specifically, 1 mL of the culture supernatant was air-dried under reduced pressure, and the obtained solid content was dissolved in 20 μL of sodium borate buffer (pH 8.2).
Subsequently, 5 μL of 40 mM NBD-F / acetonitrile solution was added, incubated at 60 ° C. for 2 minutes, and 2 μL of the reaction solution dissolved in 75 μL of 2% trifluoroacetic acid aqueous solution was subjected to HPLC.
HPLCは、主に、逆相マイクロカラムを用いる一次元目と、光学異性体分離カラムを用いる二次元目とにより構成されるHPLCシステムにより行われた。
使用したＨＰＬＣシステム（NANOSPACE SI-2 シリーズ, 資生堂, 日本）の構成を以下
に示す。
３０１０型脱気装置、
３２０１型ポンプ ２台、
３０３３型オートサンプラー、
３００４型カラムオーブン、
３０１３型蛍光検出器 ２台、
３０１２型カラム選択ユニット、マルチループユニット（9ループ、1ループは長さ 750
mm x 内径 0.5 mm、ループ当たり150 μL容量）、1入力-10出力バルブ（C5-2340 EMTD, Valco Instruments、米国）。
データ処理プログラムのEzChrom Elite Clientは、検出器の反応をモニタリングするのに使用し、カラム選択ユニットとマルチループユニットは、KSAAバルブ制御システム（資生堂）を用いて制御した。
HPLC was mainly performed by an HPLC system composed of a first dimension using a reverse-phase microcolumn and a second dimension using an optical isomer separation column.
The configuration of the HPLC system used (NANOSPACE SI-2 series, Shiseido, Japan) is shown below.
3010 type deaerator,
2 3201 type pumps,
3033 type autosampler,
3004 type column oven,
Two 3013 type fluorescence detectors,
3012 type column selection unit, multi-loop unit (9 loops, 1 loop length 750
mm x ID 0.5 mm, 150 μL capacity per loop), 1 input to 10 output valve (C5-2340 EMTD, Valco Instruments, USA).
The data processing program EzChrom Elite Client was used to monitor the detector response, and the column selection unit and multi-loop unit were controlled using a KSAA valve control system (Shiseido).
一次元目においては、microbore-monolithic ODSカラム（長さ 1000 mm x 内径 0.53 mm、シリカゲル充填、資生堂製）を、45℃に維持して使用した。移動相には、6％アセトニトリル、0.06％トリフルオロ酢酸を含む水溶液を、25 μL毎分の流速で用いた。 In the first dimension, a microbore-monolithic ODS column (length 1000 mm x inner diameter 0.53 mm, packed with silica gel, manufactured by Shiseido) was used while being maintained at 45 ° C. As the mobile phase, an aqueous solution containing 6% acetonitrile and 0.06% trifluoroacetic acid was used at a flow rate of 25 μL per minute.
二次元目においては、narrowbore-Sumichiral OA-2500S 光学異性体分離カラム（長さ 250 mm x 内径 1.5 mm、住化分析化学、日本）を、25℃に維持して使用した。
Serの移動相には、5 mMクエン酸加・メタノール／アセトニトリル混合液（25：75混合
液）を、流速200 μL毎分で使用した。
Glu、Aspの移動相には、2.5 mM クエン酸加・メタノール／アセトニトリル混合液（25
：75混合液）を、流速200 μL毎分で使用した。
His、Lysの移動相には、0.5 mM クエン酸加・メタノールを、流速200 mL毎分で使用し
た。
また、Alaの移動相には5 mMクエン酸加・メタノール／アセトニトリル混合液（50：50
混合液）を流速200 μL毎分で使用した。
In the second dimension, a narrowbore-Sumichiral OA-2500S optical isomer separation column (length 250 mm x inner diameter 1.5 mm, Sumika Chemical, Japan) was used at 25 ° C.
For the Ser mobile phase, a 5 mM citrated / methanol / acetonitrile mixture (25:75 mixture) was used at a flow rate of 200 μL per minute.
For the mobile phase of Glu and Asp, 2.5 mM citrate / methanol / acetonitrile mixture (25
: 75 mixture) was used at a flow rate of 200 μL per minute.
For the His and Lys mobile phases, 0.5 mM citric acid / methanol was used at a flow rate of 200 mL / min.
The mobile phase of Ala is 5 mM citrated / methanol / acetonitrile mixture (50:50
Mixture) was used at a flow rate of 200 μL per minute.
上記誘導体化したアミノ酸を含む反応液を、一次元目における逆相マイクロカラムに供した。
そして、一次元目に設置した蛍光検出器によって、４７０ｎｍの励起波長によるＮＢＤ誘導体化アミノ酸の蛍光を５３０ｎｍにて検出し、検出したアミノ酸を含む画分（Ｄ体とＬ体の混合物の状態：クロマトグラムの一例を図１に示す）を、カラムスイッチングにより二次元目における光学異性体分離カラムへ導入して分離し、二次元目に設置した蛍光検出器によってＤ体とＬ体を定量した（クロマトグラムの一例を図２に示す）。
アミノ酸のＤ体、Ｌ体の定量結果を、それぞれ表２に示す。
The reaction solution containing the derivatized amino acid was applied to a reversed-phase microcolumn in the first dimension.
The fluorescence of the NBD derivatized amino acid with an excitation wavelength of 470 nm is detected at 530 nm by a fluorescence detector installed in the first dimension, and the fraction containing the detected amino acid (the state of the mixture of D and L forms: chromatogram An example of a gram is shown in FIG. 1) and separated by column switching into an optical isomer separation column in the second dimension, and D and L isomers were quantified by a fluorescence detector installed in the second dimension (chromatography). An example of a gram is shown in FIG.
Table 2 shows the results of quantification of D-form and L-form of amino acids.
表２は、ＭＣＣ１８４７株培養後における培養物中のアミノ酸含有量から、培養前のＭＲＳ培地に含まれるアミノ酸含有量を差し引くことにより算出した、アミノ酸分泌量を示す。
分泌量がマイナスの場合は、微生物が分泌したアミノ酸量よりも、微生物により消費されたアミノ酸量の方が多かったことを示す。
分泌量がプラスの場合は、微生物により消費されたアミノ酸量よりも、微生物が分泌したアミノ酸量が多かったことを示す。
Table 2 shows the amino acid secretion amount calculated by subtracting the amino acid content contained in the MRS medium before culturing from the amino acid content in the culture after culturing MCC1847 strain.
When the amount of secretion is negative, it indicates that the amount of amino acid consumed by the microorganism was larger than the amount of amino acid secreted by the microorganism.
A positive secretion amount indicates that the amount of amino acids secreted by the microorganism was greater than the amount of amino acids consumed by the microorganism.
表２は、ラクトバチルス・アシドフィルスＭＣＣ１８４７株が、Ｄ−ヒスチジン、Ｄ−セリン、Ｄ−アスパラギン酸、Ｄ−グルタミン酸、Ｄ−アラニン及びＤ−リジンを分泌したことを示している。 Table 2 shows that Lactobacillus acidophilus MCC1847 strain secreted D-histidine, D-serine, D-aspartic acid, D-glutamic acid, D-alanine and D-lysine.
以下の表３は、表２の結果から、ＭＣＣ１８４７株におけるＤ−アミノ酸の分泌比率を、［Ｄ−アミノ酸分泌量］／（［Ｄ−アミノ酸分泌量］＋［Ｌ−アミノ酸分泌量］）の式で計算した結果である。但し、Ｄ−アミノ酸分泌量またはＬ−アミノ酸分泌量がマイナスの値である場合には、分泌量は０として計算を行った。 Table 3 below shows the secretion ratio of D-amino acid in the MCC1847 strain based on the results of Table 2, with the formula [D-amino acid secretion amount] / ([D-amino acid secretion amount] + [L-amino acid secretion amount]). It is the result calculated by. However, when the amount of secreted D-amino acid or the amount of secreted L-amino acid was a negative value, the amount of secretion was calculated as 0.
表３から、ＭＣＣ１８４７株においては、Ｄ−ヒスチジン、Ｄ−セリン、Ｄ−アスパラギン酸、Ｄ−グルタミン酸、Ｄ−アラニン、及びＤ−リジンの分泌比率が０．５以上であり、Ｄ−アミノ酸が高効率に分泌されていることが判明した。さらに、高効率に分泌するＤ−アミノ酸の種類も豊富である。 From Table 3, in the MCC1847 strain, the secretion ratio of D-histidine, D-serine, D-aspartic acid, D-glutamic acid, D-alanine, and D-lysine is 0.5 or more, and the D-amino acid is high. It was found that it was secreted efficiently. Furthermore, there are abundant types of D-amino acids secreted with high efficiency.
〔実施例１：ドリンクヨーグルト〕
１０％（Ｗ／Ｗ）還元脱脂粉乳（森永乳業社製）を水に溶解して得た１０％（Ｗ／Ｗ）還元脱脂粉乳培地１０００ｍＬを９０℃で３０分間殺菌し、ラクトバチルス・アシドフィルスＭＣＣ１８４７株のシードカルチャーを３０ｍＬ接種し、３７℃１６時間培養した。
これとは別に、脱脂粉乳、全粉乳、ペクチン、及び蔗糖からなる原料を混合溶解して得られた、乳脂肪０．５％（Ｗ／Ｗ）、無脂乳固形分８．０％（Ｗ／Ｗ）、蔗糖５．０％（Ｗ／Ｗ）、ペクチン０．２％（Ｗ／Ｗ）からなるベース５０Ｌを、９０℃で１０分間殺菌し，４０℃に冷却した。該殺菌したベースに、前記の通り前培養を行ったラクトバチルス・アシドフィルスＭＣＣ１８４７株のカルチャー５０ｍＬを接種し、３７℃１６時間培養して発酵乳を得た。
該発酵乳を直ちに攪拌冷却し、冷却発酵乳を１５ＭＰａの圧力で均質化し、２００ｍＬ容のガラス容器に充填し、密封し、ドリンクヨーグルトを製造した。
[Example 1: Drink yogurt]
10% (W / W) reduced skim milk powder (manufactured by Morinaga Milk Industry Co., Ltd.) in water was sterilized at 90 ° C. for 30 minutes, and Lactobacillus acidophilus MCC1847. 30 mL of the seed culture of the strain was inoculated and cultured at 37 ° C. for 16 hours.
Separately, 0.5% (W / W) milk fat and 8.0% non-fat milk solid content (W / W) obtained by mixing and dissolving a raw material comprising skim milk powder, whole milk powder, pectin, and sucrose / W), a base 50L composed of sucrose 5.0% (W / W) and pectin 0.2% (W / W) was sterilized at 90 ° C. for 10 minutes and cooled to 40 ° C. The sterilized base was inoculated with 50 mL of the culture of Lactobacillus acidophilus MCC1847 strain that had been pre-cultured as described above, and cultured at 37 ° C. for 16 hours to obtain fermented milk.
The fermented milk was immediately stirred and cooled, and the cooled fermented milk was homogenized at a pressure of 15 MPa, filled in a 200 mL glass container and sealed to produce a drink yogurt.
製造したドリンクヨーグルトには、Ｄ−ヒスチジン、Ｄ−セリン、Ｄ−アスパラギン酸、Ｄ−グルタミン酸、Ｄ−アラニン、及びＤ−リジンの分泌比率が０．５以上で各Ｄ−アミノ酸が存在していた。
このドリンクヨーグルトは、このまま皮膚保湿用飲食品、シワ形成抑制用飲食品、及び美肌用飲食品として使用し得る。
In the produced drink yogurt, each D-amino acid was present with a secretion ratio of D-histidine, D-serine, D-aspartic acid, D-glutamic acid, D-alanine, and D-lysine of 0.5 or more. .
This drink yogurt can be used as it is as a food and drink for moisturizing skin, a food and drink for suppressing wrinkle formation, and a food and drink for beautifying skin.
〔実施例２：発酵乳〕
１０％（Ｗ／Ｗ）還元脱脂粉乳培地１０００ｍＬを９０℃で３０分間殺菌し、ラクトバチルス・アシドフィルスＭＣＣ１８４７株のシードカルチャーを３０ｍＬ接種し、３７℃１６時間培養した。
これとは別に、乳脂肪３．０％（Ｗ／Ｗ）、無脂乳固形分９．０％（Ｗ／Ｗ）からなる生乳５０Ｌを７０℃に加温し、１５ＭＰａの圧力で均質化した後、９０℃で１０分間殺菌し，４０℃に冷却した。該殺菌したベースに、前記の通り前培養を行ったラクトバチルス・アシドフィルスＭＣＣ１８４７株のカルチャー５００ｍＬ、及びストレプトコッカス・サーモフィルスとラクトバチルス・ブルガリクスの混合カルチャー５ｍＬを接種し、５００ｍＬ容の樹脂容器に充填し、密封し、３７℃７時間培養した後、直ちに冷却して発酵乳を製造した。
[Example 2: Fermented milk]
1000 mL of 10% (W / W) reduced skim milk medium was sterilized at 90 ° C. for 30 minutes, 30 mL of seed culture of Lactobacillus acidophilus MCC1847 strain was inoculated, and cultured at 37 ° C. for 16 hours.
Separately, 50 L of raw milk consisting of milk fat 3.0% (W / W) and non-fat milk solid content 9.0% (W / W) was heated to 70 ° C. and homogenized at a pressure of 15 MPa. Then, it sterilized at 90 degreeC for 10 minutes, and cooled to 40 degreeC. The sterilized base is inoculated with 500 mL of the culture of Lactobacillus acidophilus MCC1847 strain previously cultured as described above, and 5 mL of a mixed culture of Streptococcus thermophilus and Lactobacillus bulgaricus, and filled in a 500 mL resin container. After sealing and culturing at 37 ° C. for 7 hours, it was immediately cooled to produce fermented milk.
製造した発酵乳には、Ｄ−ヒスチジン、Ｄ−セリン、Ｄ−アスパラギン酸、Ｄ−グルタミン酸、Ｄ−アラニン、及びＤ−リジンの分泌比率が０．５以上で各Ｄ−アミノ酸が存在していた。
この発酵乳は、このまま皮膚保湿用飲食品、シワ形成抑制用飲食品、及び美肌用飲食品として使用し得る。
In the produced fermented milk, the secretion ratio of D-histidine, D-serine, D-aspartic acid, D-glutamic acid, D-alanine, and D-lysine was 0.5 or more, and each D-amino acid was present. .
This fermented milk can be used as it is as a food and drink for moisturizing skin, a food and drink for suppressing wrinkle formation, and a food and drink for beautiful skin.
〔実施例３：粉末製剤〕
還元脱脂粉乳培地（１３重量％脱脂粉乳、０．５重量％酵母エキス含有）を９５℃で３０分間殺菌したのち、ラクトバチルス・アシドフィルスＭＣＣ１８４７株のシードカルチャーを接種し、３７℃で１６時間培養し、得られた培養物を凍結乾燥してラクトバチルス・アシドフィルスＭＣＣ１８４７株培養物の粉末製剤を得た。
[Example 3: Powder formulation]
Reduced skim milk medium (13% by weight skim milk powder, containing 0.5% by weight yeast extract) is sterilized at 95 ° C. for 30 minutes, then inoculated with a seed culture of Lactobacillus acidophilus MCC1847 strain and cultured at 37 ° C. for 16 hours. The obtained culture was freeze-dried to obtain a powder formulation of Lactobacillus acidophilus MCC1847 strain culture.
製造した粉末製剤には、Ｄ−ヒスチジン、Ｄ−セリン、Ｄ−アスパラギン酸、Ｄ−グルタミン酸、Ｄ−アラニン、及びＤ−リジンの分泌比率が０．５以上で各Ｄ−アミノ酸が存在していた。
この粉末製剤は、このまま皮膚保湿剤、シワ形成抑制剤、及び美肌剤として使用し得る。
In the produced powder formulation, the secretion ratio of D-histidine, D-serine, D-aspartic acid, D-glutamic acid, D-alanine, and D-lysine was 0.5 or more, and each D-amino acid was present. .
This powder formulation can be used as it is as a skin moisturizer, wrinkle formation inhibitor and skin beautifier.
本発明において製造されるＤ−アミノ酸、又はラクトバチルス・アシドフィルスＭＣＣ１８４７株を含有する培養物は、Ｄ−アミノ酸又は当該微生物が有する生理作用を期待して、又は、矯味等の目的で、医薬、医薬部外品、皮膚外用剤、化粧料、食品、食品添加物又は飼料等に幅広く使用可能である。
また、本発明の製造方法は、特定の株を採用することにより、高効率に及び／又は多種類のＤ−アミノ酸を製造することが可能である。
The culture containing the D-amino acid or Lactobacillus acidophilus MCC1847 produced in the present invention is expected to have a physiological effect of the D-amino acid or the microorganism, or for the purpose of taste-masking, It can be widely used for quasi-drugs, external preparations for skin, cosmetics, foods, food additives or feeds.
Moreover, the manufacturing method of this invention can manufacture many types of D-amino acid efficiently and / or by employ | adopting a specific strain | stump | stock.
１ Ｄ体とＬ体が混合した状態のアラニンのピークを示す。
２ Ｄ−アラニンのピークを示す。
３ Ｌ−アラニンのピークを示す。
1 shows a peak of alanine in a state where D-form and L-form are mixed.
2 shows the peak of D-alanine.
The peak of 3 L-alanine is shown.
本発明者らは、上記の課題を解決すべく鋭意研究を行った結果、ラクトバチルス・アシドフィルスＭＣＣ１８４７株（受託番号：ＮＩＴＥ ＢＰ−０１６９５）が、高効率でＤ−アミノ酸を分泌することを見出し、本発明を完成するに至った。
The present inventors have made intensive studies to solve the above problems, Lactobacillus acidophilus MCC1847 strain (consignment number: NITE BP -01695) is found to secrete D- amino acids with high efficiency The present invention has been completed.
すなわち、本発明は、以下の事項に関する。
［１］ラクトバチルス・アシドフィルス（Lactobacillus acidophilus）ＭＣＣ１８４７
株（受託番号：ＮＩＴＥ ＢＰ−０１６９５）を培地で培養する工程、及び、
前記培養後の培養物中に分泌されたＤ−アミノ酸と微生物とを分離し、かつ、Ｄ−アミノ酸を含む画分を培養物から回収する工程、
を含む、Ｄ−アミノ酸の製造方法。
［２］前記Ｄ−アミノ酸を含む画分の培養物からの回収を、培養物から微生物を除去した後に行う、［１］に記載の方法。
［３］前記Ｄ−アミノ酸を含む画分において微生物から分泌されたアミノ酸が、以下の（１）の関係式を満たすものである、［１］または［２］に記載の製造方法。
［Ｄ−アミノ酸分泌量］／（［Ｄ−アミノ酸分泌量］＋［Ｌ−アミノ酸分泌量］）≧０．５ ・・・・・・（１）
［４］前記Ｄ−アミノ酸が、Ｄ−ヒスチジン、Ｄ−セリン、Ｄ−アスパラギン酸、Ｄ−グルタミン酸、Ｄ−アラニン、及びＤ−リジンからなる群より選択される一または複数のＤ−アミノ酸である、［１］〜［３］のいずれかに記載の製造方法。
［５］単離されたラクトバチルス・アシドフィルス（Lactobacillus acidophilus）ＭＣ
Ｃ１８４７株（受託番号：ＮＩＴＥ ＢＰ−０１６９５）。
［６］［５］に記載の株を含有する培養物を含む、組成物。
［７］前記培養物は、Ｄ−アミノ酸を含む、［６］に記載の組成物。
That is, the present invention relates to the following matters.
[1] Lactobacillus acidophilus MCC1847
Strain (consignment number: NITE BP -01695) step of culturing in a medium a and,
Separating the D-amino acid secreted into the culture after the culture and the microorganism, and collecting a fraction containing the D-amino acid from the culture;
A process for producing a D-amino acid comprising:
[2] The method according to [1], wherein the fraction containing the D-amino acid is recovered from the culture after removing the microorganism from the culture.
[3] The production method according to [1] or [2], wherein the amino acid secreted from the microorganism in the fraction containing D-amino acid satisfies the following relational expression (1):
[D-amino acid secretion amount] / ([D-amino acid secretion amount] + [L-amino acid secretion amount]) ≧ 0.5 (1)
[4] The D-amino acid is one or more D-amino acids selected from the group consisting of D-histidine, D-serine, D-aspartic acid, D-glutamic acid, D-alanine, and D-lysine. , [1] to [3].
[5] Isolated Lactobacillus acidophilus MC
C1847 share (consignment number: NITE BP -01695).
[6] A composition comprising a culture containing the strain according to [5].
[7] The composition according to [6], wherein the culture contains a D-amino acid.
本発明によれば、ラクトバチルス・アシドフィルスＭＣＣ１８４７株（受託番号：ＮＩＴＥ ＢＰ−０１６９５）を用いて、Ｄ−アミノ酸を製造することができる。
ラクトバチルス・アシドフィルスＭＣＣ１８４７株は、［Ｄ−アミノ酸分泌量］／（［Ｄ−アミノ酸分泌量］＋［Ｌ−アミノ酸分泌量］）の比率が高いため、高効率でＤ−アミノ酸を製造することができる。
さらに、ラクトバチルス・アシドフィルスに属する微生物は、長い食経験のある乳酸菌である。そのため、Ｄ−アミノ酸を含む画分から乳酸菌を分離除去しなくても、食品等の組成物に配合することができる。
According to the present invention, Lactobacillus acidophilus MCC1847 strain (consignment number: NITE BP -01695) using, can be produced D- amino acids.
The Lactobacillus acidophilus MCC1847 strain has a high ratio of [D-amino acid secretion amount] / ([D-amino acid secretion amount] + [L-amino acid secretion amount]), and therefore can produce D-amino acids with high efficiency. it can.
Furthermore, microorganisms belonging to Lactobacillus acidophilus are lactic acid bacteria with a long dietary experience. Therefore, it can be blended in a composition such as food without separating and removing lactic acid bacteria from the fraction containing D-amino acid.
本発明において使用されるラクトバチルス・アシドフィルスＭＣＣ１８４７株は、２０１３年８月２３日に、独立行政法人製品評価技術基盤機構特許微生物寄託センター（〒２９２−０８１８ 千葉県木更津市かずさ鎌足２−５−８ １２２号室）に、ブダペスト条約に基づき国際寄託されている（受託番号：ＮＩＴＥ ＢＰ−０１６９５）。 The Lactobacillus acidophilus MCC1847 strain used in the present invention was issued on August 23, 2013 by the National Institute of Technology and Evaluation for Microorganisms (2-5 Kazusa Kamashichi, Kisarazu City, Chiba Prefecture 292-0818). 8, No. 122 chamber), and an international deposition under the Budapest Treaty (consignment number: NITE BP -01695).
Claims (7)
受領番号：ＮＩＴＥ ＡＢＰ−０１６９５）を培地で培養する工程、及び、
前記培養後の培養物中に分泌されたＤ−アミノ酸と微生物とを分離し、かつ、Ｄ−アミノ酸を含む画分を培養物から回収する工程、
を含む、Ｄ−アミノ酸の製造方法。 Lactobacillus acidophilus MCC1847 strain (
Receipt number: NITE ABP-01695) in culture medium, and
Separating the D-amino acid secreted into the culture after the culture and the microorganism, and collecting a fraction containing the D-amino acid from the culture;
A process for producing a D-amino acid comprising:
［Ｄ−アミノ酸分泌量］／（［Ｄ−アミノ酸分泌量］＋［Ｌ−アミノ酸分泌量］）≧０．５ ・・・・・・（１） The production method according to claim 1 or 2, wherein the amino acid secreted from the microorganism in the fraction containing D-amino acid satisfies the following relational expression (1).
[D-amino acid secretion amount] / ([D-amino acid secretion amount] + [L-amino acid secretion amount]) ≧ 0.5 (1)
８４７株（受領番号：ＮＩＴＥ ＡＢＰ−０１６９５）。 Isolated Lactobacillus acidophilus MCC1
847 shares (reception number: NITE ABP-01695).
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| WO2021015288A1 (en) * | 2019-07-24 | 2021-01-28 | 雪印メグミルク株式会社 | Composition for maintenance and/or improvement of memory/learning ability, and food, medicine and feed each containing said composition |
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| JP2017143766A (en) * | 2016-02-16 | 2017-08-24 | 大関株式会社 | Lactic acid bacterium, and method for producing lactic acid fermented sake cake fermentation extract using the same |
| WO2018174286A1 (en) * | 2017-03-24 | 2018-09-27 | 味の素株式会社 | Stratum corneum function improving agent |
| JPWO2018174286A1 (en) * | 2017-03-24 | 2020-01-23 | 味の素株式会社 | Stratum corneum function improver |
| JP7172984B2 (en) | 2017-03-24 | 2022-11-16 | 味の素株式会社 | stratum corneum function improving agent |
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| JP7424422B2 (en) | 2017-03-24 | 2024-01-30 | 味の素株式会社 | whitening agent |
| JP2019088212A (en) * | 2017-11-13 | 2019-06-13 | 大洋香料株式会社 | Flavor improving agent for beverage |
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