JPH01309690A - Separation of fermentation product from fermented liquid - Google Patents

Separation of fermentation product from fermented liquid

Info

Publication number
JPH01309690A
JPH01309690A JP14137388A JP14137388A JPH01309690A JP H01309690 A JPH01309690 A JP H01309690A JP 14137388 A JP14137388 A JP 14137388A JP 14137388 A JP14137388 A JP 14137388A JP H01309690 A JPH01309690 A JP H01309690A
Authority
JP
Japan
Prior art keywords
liquid
fermentation
activated carbon
treated
fermentation product
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
JP14137388A
Other languages
Japanese (ja)
Inventor
Nobumi Kunishige
国重 悦己
Kimitoshi Kawai
河合 公利
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.)
Daicel Corp
Original Assignee
Daicel Chemical Industries Ltd
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 Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Priority to JP14137388A priority Critical patent/JPH01309690A/en
Publication of JPH01309690A publication Critical patent/JPH01309690A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To easily and economically separate and purify a fermentation product in high efficiency and to improve the decoloration efficiency of the product by adjusting the pH of a fermentation liquid or its treated liquid within a specific range, treating with activated carbon and adjusting the pH of the treated liquid to alkaline state. CONSTITUTION:A fermentation liquid or its treated liquid is adjusted to pH 6-8 and treated with activated carbon. The pH of the treated liquid is adjusted to an alkaline state (preferably about pH 11) with sodium hydroxide, etc., and usually the liquid is concentrated and crystallized to obtain a fermentation product. The fermentation liquid used as a starting material is preferably those containing basic amino acid as a fermentation product.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、醗酵液からの醗酵生産物、特に塩基性アミノ
酸の分離精製法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for separating and purifying fermentation products, particularly basic amino acids, from a fermentation liquor.

(従来技術) 従来、アミノ酸等の醗酵生産物の分離精製は、醗酵液か
ら常法により得られた処理液を、活性炭処理、或いは、
活性炭処理とイオン交換樹脂処理を組み合わせる方法等
により脱色した後、再結晶する方法等が用いられている
(Prior art) Conventionally, the separation and purification of fermentation products such as amino acids has been carried out by treating a treated liquid obtained from a fermentation liquid by a conventional method with activated carbon treatment or
A method is used in which decolorization is performed by a combination of activated carbon treatment and ion exchange resin treatment, followed by recrystallization.

(発明が解決しようとする課題) しかし、目的の醗酵生産物が塩基性アミノ酸の場合、醗
酵液やその処理液はアルカリ性であるなめ、活性炭処理
での脱色効率が悪く、多量の活性炭を必要とする。しか
も、活性炭処理を繰り返し行なっても完全に脱色するこ
とは困難である。
(Problem to be solved by the invention) However, when the target fermentation product is a basic amino acid, the fermentation liquid and its treatment liquid are alkaline, so the decolorization efficiency in activated carbon treatment is poor and a large amount of activated carbon is required. do. Moreover, even if activated carbon treatment is repeated, it is difficult to completely decolorize.

また、活性炭処理とイオン交換樹脂処理とを組み合わせ
ることにより脱色効率は向上するが、樹脂塔等の設備と
、樹脂のコンディショニング、再生などの操作が必要と
なり、工程が複雑になるという問題点がある。
Furthermore, although the decolorization efficiency can be improved by combining activated carbon treatment and ion exchange resin treatment, it requires equipment such as a resin tower and operations such as resin conditioning and regeneration, making the process complicated. .

(課題を解決するための手段) 本発明咎らは、経済性に優れ、且つ、簡単で効率良く塩
基性アミノ酸を分離f11J製する方法を確立すること
を目的に鋭意研究した結果、醗酵液またはその処理液の
ρF(を6〜8にした後活性炭処理を行なうと、非常に
脱色効率が良いことを見出だし本発明に至った。
(Means for Solving the Problems) The inventors of the present invention have conducted extensive research aimed at establishing a simple and efficient method of separating basic amino acids to produce f11J, which is excellent in economic efficiency. It has been discovered that when activated carbon treatment is performed after adjusting the ρF of the treatment solution to 6 to 8, the decolorization efficiency is very high, leading to the present invention.

すなわち、本発明は、醗酵液から醗酵生産物を分離する
に際し、醗#液またはその処理液のPHを6〜8にし、
活性炭処理を行なった後、原液のpHをアリカリ性にす
ることを特徴とする醗酵液から醗酵生産物を分離する方
法である。
That is, in the present invention, when separating a fermentation product from a fermentation liquid, the pH of the fermentation liquid or its treatment liquid is set to 6 to 8,
This is a method for separating fermentation products from a fermentation liquid, which is characterized by making the pH of the stock solution alkaline after treatment with activated carbon.

また、驚くべきことに、本発明の方法により得られた醗
酵生産物は、発熱性物質までもが除去されていた。つま
り本発明の方法によって、非常に簡単に着色成分と発熱
性物質(パイロジエン)とを同時に除去することが可能
になった。
Moreover, surprisingly, even pyrogens were removed from the fermentation product obtained by the method of the present invention. In other words, by the method of the present invention, it has become possible to remove coloring components and exothermic substances (pyrogienes) at the same time very easily.

本発明の醗酵液またはその処理液とは、菌体を含む醗酵
液、除菌した醗酵液、醗酵生産物の粗結晶溶解液、また
は晶析母液などを示す。
The fermentation liquid or its treated liquid of the present invention refers to a fermentation liquid containing bacterial cells, a sterilized fermentation liquid, a solution of crude crystals of a fermentation product, a crystallization mother liquor, and the like.

また、醗酵生産物としては、特に塩基性アミノ酸、例え
ばアルギニン、リジン、オルニチン、ヒスチジン等が挙
げられる。
Fermentation products include in particular basic amino acids such as arginine, lysine, ornithine, histidine, and the like.

この醗酵液またはその処理液に、塩酸、硫酸、硝酸等の
無機酸、或いは、酢酸、ギ酸等の有機酸を添加すること
によって原液をpH6〜8付近に調整する。
The pH of the stock solution is adjusted to about 6 to 8 by adding an inorganic acid such as hydrochloric acid, sulfuric acid, or nitric acid, or an organic acid such as acetic acid or formic acid to this fermentation solution or its treated solution.

次にこの中性溶液に活性炭を添加すると脱色、脱パイロ
ジェンされる。この際便用される活性炭は、通常の脱色
用活性炭であれば特に制限はない。
Next, activated carbon is added to this neutral solution to decolorize and depyrogenize it. The activated carbon used at this time is not particularly limited as long as it is a normal decolorizing activated carbon.

その使用量は溶液中に含まれる醗酵生産物量に対して通
常1〜10%程度で十分であるが、不十分である時はこ
の活性炭処理を繰り返せばよい。
The amount used is usually about 1 to 10% based on the amount of fermentation product contained in the solution, but if it is insufficient, this activated carbon treatment may be repeated.

続いて活性炭を濾過等により除去し、得られた活性炭処
理液に水酸化ナトリウム、水酸化カリウム、アンモニア
等のアルカリを添加してp Hを11付近に調整する。
Subsequently, the activated carbon is removed by filtration or the like, and an alkali such as sodium hydroxide, potassium hydroxide, or ammonia is added to the obtained activated carbon-treated liquid to adjust the pH to around 11.

ここで用いるアルカリと先の工程で用いる酸は、それら
から生成する塩の晶析溶媒に対する溶解度が目的の醗酵
生産物のそれと比較して高いような組み合わせであれば
いかなるものでもよい。
The alkali used here and the acid used in the previous step may be any combination as long as the solubility of the salt produced therefrom in the crystallization solvent is higher than that of the target fermentation product.

このようにして得られた精製溶液を常法により濃縮、晶
析する。この時晶析収率を高くするために、メタノール
、エタノール等の有機溶媒を加えることもできる。
The purified solution thus obtained is concentrated and crystallized by a conventional method. At this time, in order to increase the crystallization yield, an organic solvent such as methanol or ethanol may be added.

次に晶析した結晶を枦取して乾燥すると目的物を得るこ
とができる。
Next, the crystallized crystals are collected and dried to obtain the desired product.

以下、実施例を以て本発明を説明するが、本発明はこれ
に限定されるものではない。
The present invention will be explained below with reference to Examples, but the present invention is not limited thereto.

(実施例) 実施例 アルギニンを含む醗酵液処理液(し−アルギニン15%
、溶液の着色度は430 nmにおける透過率で26.
8%、PH11,2)100gに酢酸を添加し、pH7
,0に調整した。
(Example) Example Fermentation liquid treatment solution containing arginine (arginine 15%
, the degree of coloration of the solution was 26.2% in transmittance at 430 nm.
8%, pH 11,2), add acetic acid to 100 g, pH 7
, adjusted to 0.

次に、この溶液に活性炭(太閤A;二村化学製)1.1
25g(アルギニンに対して7.5%)を添加し、70
″Cで30分間処理した後、活性炭を濾過により除去し
た。この処理液の着色度は430nmにおける透過率で
98.8%に達した。
Next, add 1.1% of activated carbon (Taiko A; manufactured by Futamura Chemical Co., Ltd.) to this solution.
Add 25g (7.5% relative to arginine) and
After treatment with "C" for 30 minutes, the activated carbon was removed by filtration.The degree of coloration of this treated solution reached 98.8% in transmittance at 430 nm.

続いて、この処理液に10%水酸化カリウム水溶液を添
加して、pHを11.0に調整した。
Subsequently, a 10% aqueous potassium hydroxide solution was added to this treatment liquid to adjust the pH to 11.0.

得られた溶液をロータリーエバポレーターでアルギニン
濃度が45%になるまで減圧濃縮した。
The resulting solution was concentrated under reduced pressure using a rotary evaporator until the arginine concentration was 45%.

′ これにメタノールを42g加えて約4℃で一夜放置
した。
' 42 g of methanol was added to this and left overnight at about 4°C.

晶析した結晶を沢取し、メタノールで洗浄したf&60
℃で一夜通風乾燥することにより、L−アルギニンの白
色粒状結晶11.8g(収率78゜7%)を得た。得ら
れた結晶の着色度を表わす透過率、その他の分析値を以
下に示す。
f&60 which collected a lot of crystallized crystals and washed with methanol
By drying with ventilation overnight at .degree. C., 11.8 g of white granular crystals of L-arginine (yield 78.7%) were obtained. The transmittance indicating the degree of coloration of the obtained crystals and other analytical values are shown below.

透過率:99.5% (5%水溶液の430nmにおける吸光度より算出) 含   量:99.7%(非水滴定法により測定)比旋
光度:α” =27.4゜ (乾燥後、 2 g、 6N−He l 、 25ml
、 100 ram)パイロジエンニー (比色法エンドトキシン定旦試薬(パイロデイック;生
化学工業製)により測定) 比絞例 実施例と同じアルギニンを含む醗酵液処理液100gに
活性炭0.75g (アルギニンに対して5%)を添加
し、70℃で30分間処理した後、活性炭を濾過により
除去した。この操作を4回繰り返した。この処理液の着
色度は430 nmにおける透過率で94.7%であっ
た。
Transmittance: 99.5% (calculated from absorbance at 430 nm of 5% aqueous solution) Content: 99.7% (measured by non-aqueous titration method) Specific optical rotation: α” = 27.4° (after drying, 2 g, 6N-HeI, 25ml
, 100 ram) Pyrogeny (measured by colorimetric endotoxin constant reagent (Pyrodic; manufactured by Seikagaku Corporation)) Specific Squeezing Example 0.75 g of activated carbon was added to 100 g of the fermentation liquid treatment solution containing arginine, which is the same as in the example. After treatment at 70° C. for 30 minutes, activated carbon was removed by filtration. This operation was repeated four times. The degree of coloration of this treatment liquid was 94.7% in terms of transmittance at 430 nm.

得られた溶流を実施例と同様に減圧濃縮、晶析、P取、
乾燥することにより、し−アルギニンの結晶9.32g
(収率62.1%)を得た。得られた結晶の着色度を表
わす透過率、その他の分析値を以下に示す6なお、測定
法、測定条件は実施例と同様である。
The obtained solution was concentrated under reduced pressure, crystallized, P removed, and
By drying, 9.32 g of arginine crystals were obtained.
(yield: 62.1%). The transmittance indicating the degree of coloration of the obtained crystals and other analytical values are shown below.6 The measurement method and measurement conditions are the same as in the examples.

透過率+98.1q≦ 片   量:98.0% 比旋光度:αせ=27. O。Transmittance +98.1q≦ Piece amount: 98.0% Specific optical rotation: α = 27. O.

パイロジエン:十+ (効果) 本発明の方法は、経済性に優れ、且つ、簡単で効率良く
醗酵生産物を分離精製する方法であり、着色成分とパイ
ロジエンとを同時に除去することを可能にした。
Pyrodiene: 10+ (Effects) The method of the present invention is an economical, simple and efficient method for separating and purifying fermentation products, and makes it possible to simultaneously remove coloring components and pyrodiene.

Claims (2)

【特許請求の範囲】[Claims] (1)醗酵液から醗酵生産物を分離するに際し、醗酵液
またはその処理液のpHを6〜8にし、活性炭処理を行
なった後、該液のpHをアリカリ性にすることを特徴と
する醗酵液から醗酵生産物を分離する方法
(1) Fermentation characterized in that when separating the fermentation product from the fermentation liquid, the pH of the fermentation liquid or its treated liquid is adjusted to 6 to 8, and after being treated with activated carbon, the pH of the liquid is made alkaline. Method of separating fermentation products from liquid
(2)醗酵生産物が塩基性アミノ酸である、請求項(1
)に記載の方法
(2) Claim (1) wherein the fermentation product is a basic amino acid.
) method described in
JP14137388A 1988-06-08 1988-06-08 Separation of fermentation product from fermented liquid Pending JPH01309690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14137388A JPH01309690A (en) 1988-06-08 1988-06-08 Separation of fermentation product from fermented liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14137388A JPH01309690A (en) 1988-06-08 1988-06-08 Separation of fermentation product from fermented liquid

Publications (1)

Publication Number Publication Date
JPH01309690A true JPH01309690A (en) 1989-12-14

Family

ID=15290485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14137388A Pending JPH01309690A (en) 1988-06-08 1988-06-08 Separation of fermentation product from fermented liquid

Country Status (1)

Country Link
JP (1) JPH01309690A (en)

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