JPH07285986A - Method for separating compound of flavone skeleton having glucide structure from compound of flavone skeleton not having glycoside structure - Google Patents

Method for separating compound of flavone skeleton having glucide structure from compound of flavone skeleton not having glycoside structure

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Publication number
JPH07285986A
JPH07285986A JP5519095A JP5519095A JPH07285986A JP H07285986 A JPH07285986 A JP H07285986A JP 5519095 A JP5519095 A JP 5519095A JP 5519095 A JP5519095 A JP 5519095A JP H07285986 A JPH07285986 A JP H07285986A
Authority
JP
Japan
Prior art keywords
compound
polyvinyl alcohol
flavone
flavone skeleton
skeleton
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
JP5519095A
Other languages
Japanese (ja)
Inventor
Kazuharu Yoshizuka
和治 吉塚
Katsutoshi Inoue
勝利 井上
Hironori Kitazaki
宏典 北崎
Yoriyuki Ishimaru
順之 石丸
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.)
Tsumura and Co
Original Assignee
Tsumura and Co
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 Tsumura and Co filed Critical Tsumura and Co
Priority to JP5519095A priority Critical patent/JPH07285986A/en
Publication of JPH07285986A publication Critical patent/JPH07285986A/en
Pending legal-status Critical Current

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  • Pyrane Compounds (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Saccharide Compounds (AREA)

Abstract

PURPOSE:To provide a method for separating a compound of flavone skeleton having a glycoside structure from a compound of flavone skeleton not having a glycoside structure, to be concrete, a method for separating the compound of flavone skeleton having a glycoside structure from the compound of flavone skeleton not having a glycoside structure by using a polyvinyl alcohol membrane. CONSTITUTION:The method for separating active ingredients contained in a crude medicine, to be concrete, a compound of flavone skeleton having a glycoside structure such as baicalin from a compound of flavone skeleton not having a glycoside structure such as baicalein, flavone, flavonol, 7,8- dihydroxyflavone by using a polyvinyl alcohol membrane prepared from an aqueous solution comprising 4-8wt.% of polyvinyl alcohol, 1-2wt.% of acetamide and 90-95wt.% of water, especially preferably 4wt.% of polyvinyl alcohol, 1wt.% of acetamide and 95wt.% of water is provided.

Description

【発明の詳細な説明】Detailed Description of the Invention 【産業上の利用分野】[Industrial applications]

【0001】本発明は、医薬品等の分野で有用な生薬に
含有される活性成分を得る際に、高選択的に分離するた
めの方法を提供するためのポリビニールアルコール膜を
用いたフラボン骨格を有する化合物とその配糖体の分離
方法に関する。
[0001] The present invention provides a flavone skeleton using a polyvinyl alcohol membrane for providing a method for highly selective separation when obtaining an active ingredient contained in a crude drug useful in the fields of pharmaceuticals and the like. The present invention relates to a method for separating a compound and a glycoside thereof.

【従来の技術および課題】[Prior Art and Problems]

【0002】生薬は、古来より漢方薬の構成処方として
用いられ、また生薬中に含有される成分は、現在におい
ても医薬品等の開発にあたって非常に重要な役割を果た
している。
Crude drugs have been used as constituent prescriptions of Chinese herbs since ancient times, and the components contained in crude drugs still play a very important role in the development of pharmaceuticals and the like.

【0003】従来、生薬に含有される活性成分の分離
は、主として熱水抽出、酸沈殿およびカラム分離等を組
み合せて達成されている。しかし、これらの方法では、
分離操作が煩雑で、長時間を有する場合が多く、コスト
的にも高価であるという問題があった。
Conventionally, the separation of active ingredients contained in crude drugs has been achieved mainly by combining hot water extraction, acid precipitation, column separation and the like. But with these methods,
There is a problem that the separation operation is complicated and often takes a long time, and the cost is high.

【0004】この煩雑な分離方法を解決する方法とし
て、生薬のある特定の成分と親和性のある膜を用いて、
親和性の高い成分のみを膜透過することによる膜分離法
が開発されつつある。この場合、膜物質は分離する物質
に対して親和性は高い必要があるが、変性されるもので
あってはならないという制限があった。
As a method for solving this complicated separation method, a membrane having an affinity with a specific component of a crude drug is used,
Membrane separation methods are being developed by permeating only high affinity components. In this case, the membrane substance should have a high affinity for the substance to be separated, but there was a limitation that it should not be denatured.

【0005】[0005]

【課題を解決するための手段】本発明者らは、上記の問
題を解決すべく鋭意検討を行った結果、生体的、生物的
に害を与えることのないポリビニールアルコール膜を用
いることにより、分離操作が簡便で、コスト的にも安価
であり、短時間で済む、生薬に含有される活性成分の分
離方法を完成するに至った。
Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that by using a polyvinyl alcohol film that does not harm biologically or biologically, A method for separating an active ingredient contained in a herbal medicine, which has a simple separation operation, is inexpensive, and can be completed in a short time, has been completed.

【0006】すなわち、本発明は以下のとおりである。That is, the present invention is as follows.

【0007】(1)ポリビニールアルコール4〜8wt%、アセ
トアミド1〜2wt%および水90〜95wt%からなる水溶液から
調製されるポリビニールアルコール膜を用いた配糖体構
造を有するフラボン骨格の化合物と配糖体構造を有さな
いフラボン骨格の化合物の分離方法。
(1) A compound having a flavone skeleton having a glycoside structure using a polyvinyl alcohol membrane prepared from an aqueous solution containing 4 to 8 wt% of polyvinyl alcohol, 1 to 2 wt% of acetamide and 90 to 95 wt% of water, and A method for separating a flavone skeleton compound having no glycoside structure.

【0008】(2)配糖体構造を有さないフラボン骨格の
化合物がバイカレイン、フラボン、フラボノール、7,8-
ジヒドロキシフラボンから選ばれる少なくとも一つの化
合物であり、配糖体構造を有するフラボン骨格の化合物
がバイカリンである(1)記載の分離方法。
(2) Compounds having a flavone skeleton having no glycoside structure are baicalein, flavone, flavonol, 7,8-
The method according to (1), wherein the compound having a flavone skeleton having a glycoside structure is baicalin, which is at least one compound selected from dihydroxyflavones.

【0009】以下、(1)および(2)で示される分離方法を
まとめて本発明の分離方法という。
Hereinafter, the separation methods shown in (1) and (2) are collectively referred to as the separation method of the present invention.

【0010】本発明で用いるポリビニールアルコール膜
は、人工血管や人工透析装置用中空糸として使用される
バイオ素材であり、生体的、生物的に害を与えることが
ない。
The polyvinyl alcohol membrane used in the present invention is a biomaterial used as a hollow fiber for artificial blood vessels and artificial dialysis machines, and does not harm biologically or biologically.

【0011】本発明の分離方法により、生薬に含有され
る活性成分の分離、特に生薬オウゴン等に含有されるフ
ラボン類とその配糖体の分離、具体的にはバイカレイ
ン、フラボン、フラボノール、7,8-ジヒドロキシフラボ
ン等とバイカリン等を短時間で、かつ高選択的に分離す
ることが可能である。
According to the separation method of the present invention, separation of active ingredients contained in crude drugs, particularly separation of flavones and glycosides contained in crude drugs such as augon, specifically baicalein, flavones, flavonols, 7, It is possible to separate 8-dihydroxyflavone and the like from baicalin and the like in a short time and with high selectivity.

【0012】本発明で用いるポリビニールアルコール膜
は、生薬のある成分、具体的にはフラボン類等と親和性
のある膜であり、変性されるものであってはならないと
いう制限を満たすものである。
The polyvinyl alcohol film used in the present invention is a film having an affinity with certain components of herbal medicine, specifically flavones, and satisfies the restriction that it should not be modified. .

【0013】また、その水溶液の構成として、ポリビニ
ールアルコール4〜8wt%、アセトアミド1〜2wt%および水
90〜95wt%を有しており、この範囲であればいかなる割
合のものでもよいが、ポリビニールアルコール4wt%、ア
セトアミド1wt%および水95wt%の割合が最も好ましい。
The composition of the aqueous solution is as follows: polyvinyl alcohol 4-8 wt%, acetamide 1-2 wt% and water.
It has a content of 90 to 95 wt%, and any ratio within this range may be used, but a ratio of 4 wt% polyvinyl alcohol, 1 wt% acetamide and 95 wt% water is most preferred.

【0014】この場合、用いる水は蒸留水であることが
好ましい。
In this case, the water used is preferably distilled water.

【0015】次に、本発明で用いるポリビニールアルコ
ール膜の作成方法について、一例を挙げて以下に示す。
Next, a method for producing the polyvinyl alcohol film used in the present invention will be shown below by way of example.

【0016】すなわち、ポリビニールアルコール4〜8wt
%、アセトアミド1〜2wt%および水90〜95wt%を混合し、
ポリビニールアルコール水溶液を作成し、次にこれを遠
心分離器等を用いた遠心分離により脱気後、テフロンで
コーティングされたバットに流延し、室温において自然
乾燥することにより膜を形成させる。
That is, polyvinyl alcohol 4 to 8 wt
%, Acetamide 1-2 wt% and water 90-95 wt%,
A polyvinyl alcohol aqueous solution is prepared, and then degassed by centrifugation using a centrifuge or the like, then cast on a vat coated with Teflon, and naturally dried at room temperature to form a film.

【0017】次いで、ポリビニールアルコールとアセト
アミドと同量のグルタルアルデヒドを溶かした硫酸水溶
液で処理し、ポリビニールアルコール膜を架橋する。さ
らに、蒸留水で洗浄し、乾燥することにより本発明で用
いるポリビニールアルコール膜を作成する。
Next, the polyvinyl alcohol membrane is cross-linked by treating it with an aqueous sulfuric acid solution in which the same amount of glutaraldehyde as polyvinyl alcohol and acetamide are dissolved. Furthermore, the polyvinyl alcohol film used in the present invention is prepared by washing with distilled water and drying.

【0018】次に、本発明で用いるポリビニールアルコ
ール膜の作成について具体例を示す。
Next, a specific example will be shown for producing the polyvinyl alcohol film used in the present invention.

【0019】具体例1 ポリビニールアルコール4wt%、アセトアミド1wt%および
水95wt%を混合し、ポリビニールアルコール水溶液を作
成し、次にこれを遠心分離器により脱気後、テフロンで
コーティングされたバットに流延し、室温において自然
乾燥することにより膜を形成させた。
Concrete Example 1 4 wt% of polyvinyl alcohol, 1 wt% of acetamide and 95 wt% of water were mixed to prepare an aqueous solution of polyvinyl alcohol, which was then degassed by a centrifuge and then put on a vat coated with Teflon. A film was formed by casting and naturally drying at room temperature.

【0020】次いで、ポリビニールアルコールとアセト
アミドと同量のグルタルアルデヒドを溶かした1.6mol/l
の硫酸水溶液で処理し、ポリビニールアルコール膜を架
橋させ、蒸留水で洗浄し、乾燥することにより本発明の
ポリビニールアルコール膜を作成した。
Next, 1.6 mol / l obtained by dissolving polyvinyl alcohol and the same amount of glutaraldehyde as acetamide.
The polyvinyl alcohol film was crosslinked, washed with distilled water, and dried to prepare the polyvinyl alcohol film of the present invention.

【0021】具体例2 ポリビニールアルコール8wt%、アセトアミド2wt%および
水90wt%を混合し、ポリビニールアルコール水溶液を作
成し、次にこれを遠心分離器により脱気後、テフロンで
コーティングされたバットに流延し、室温において自然
乾燥することにより膜を形成させた。
Example 2 Polyvinyl alcohol 8 wt%, acetamide 2 wt% and water 90 wt% were mixed to prepare a polyvinyl alcohol aqueous solution, which was then degassed by a centrifuge and then put into a Teflon-coated vat. A film was formed by casting and naturally drying at room temperature.

【0022】次いで、ポリビニールアルコールとアセト
アミドと同量のグルタルアルデヒドを溶かした1.6mol/l
の硫酸水溶液で処理し、ポリビニールアルコール膜を架
橋させ、蒸留水で洗浄し、乾燥することにより本発明の
ポリビニールアルコール膜を作成した。
Next, 1.6 mol / l obtained by dissolving polyvinyl alcohol and the same amount of glutaraldehyde as acetamide.
The polyvinyl alcohol film was crosslinked, washed with distilled water, and dried to prepare the polyvinyl alcohol film of the present invention.

【0023】次に本発明の分離方法により、生薬に含有
される活性成分の分離が短時間で、かつ高選択的にでき
ることについて、実施例を挙げて説明する。
The fact that the active ingredient contained in a herbal medicine can be separated in a short time and with high selectivity by the separation method of the present invention will be described with reference to Examples.

【0024】実施例1 上記具体例1で得たポリビニールアルコール膜を用い
て、生薬オウゴンの活性成分であるバイカリン、バイカ
レインおよびフラボンの膜透過速度を測定した。
Example 1 Using the polyvinyl alcohol membrane obtained in Specific Example 1 above, the membrane permeation rates of baicalin, baicalein, and flavone, which are the active ingredients of the crude drug Ougon, were measured.

【0025】すなわち、アクリル製ダイアフラム型セル
に具体例1で得たポリビニールアルコール膜を挟み、一
方にバイカリンおよび/またはバイカレインならびにフ
ラボンのpHを調整した0.1mol/lの酢酸-酢酸ナトリウム
緩衝水溶液を仕込み、他方に同pHの酢酸-酢酸ナトリウ
ム緩衝水溶液を仕込み、恒温槽につけて所定の温度(30
°C)に保った。
That is, the polyvinyl alcohol membrane obtained in Example 1 was sandwiched in an acrylic diaphragm cell, and 0.1 mol / l acetic acid-sodium acetate buffer aqueous solution in which the pH of baicalin and / or baicalein and flavone was adjusted was placed on one side. Charge the other side, and add acetic acid-sodium acetate buffer solution of the same pH to the other side, and place it in a thermostat at the specified temperature (30
(° C).

【0026】両セルの水溶液をマグネチックスターラー
で撹拌しながら、所定時間おきにサンプリングを行っ
て、紫外可視分光光度計または高速液体クロマトグラフ
ィー(分析カラム:INERTSIL ODS-2)でその濃度を測定
し、本発明で用いるポリビニールアルコール膜の物質移
動係数の水溶液pHによる変化を求めた。
While stirring the aqueous solution of both cells with a magnetic stirrer, sampling was performed at predetermined intervals, and the concentration was measured by an ultraviolet-visible spectrophotometer or high performance liquid chromatography (analytical column: INERTSIL ODS-2). The change in the mass transfer coefficient of the polyvinyl alcohol film used in the present invention with the pH of the aqueous solution was determined.

【0027】なお、セル内の槽容積Vは75cm3、透過膜面
積は9.0cm2である。
The cell volume V in the cell is 75 cm 3 , and the permeable membrane area is 9.0 cm 2 .

【0028】バイカリン、バイカレインまたはフラボン
の単独系による、ある時間の濃度(C)と初濃度(C0)の比
(C/C0)を時間に対してプロットしたものを図1、図2およ
び図3として示した。
Ratio of concentration (C) and initial concentration (C 0 ) at a certain time by baicalin, baicalein or flavone alone.
Plots of (C / C 0 ) against time are shown in FIGS. 1, 2 and 3.

【0029】図1、図2および図3の直線部分の傾きから
求めた物質移動係数と水溶液pHとの関係を図4として示
した。
The relationship between the mass transfer coefficient obtained from the slopes of the straight line portions in FIGS. 1, 2 and 3 and the pH of the aqueous solution is shown in FIG.

【0030】図1、図2、図3および図4より明らかなよう
に、本発明の分離方法により、バイカリンとバイカレイ
ン、フラボンを選択的に分離することが可能であること
が確認された。
As is clear from FIG. 1, FIG. 2, FIG. 3 and FIG. 4, it was confirmed that baicalin, baicalein and flavone can be selectively separated by the separation method of the present invention.

【0031】すなわち、図4から物質移動係数とpHとの
関係は、フラボンの場合は全く観察されないが、バイカ
レイン、バイカリンの場合はpHの上昇に従って物質移動
係数が小さくなることがわかる。しかしながら、そのpH
の上昇に伴う物質移動係数の減少は、バイカレインより
もバイカリンに対して著しく、高pHになるほどバイカリ
ンとバイカレインおよびフラボンの透過度に差がでるこ
とがわかる。また、pH4付近において、バイカリンより
もバイカレインまたはフラボンの方を6倍ほど良く透過
させている。
That is, it can be seen from FIG. 4 that the relationship between the mass transfer coefficient and pH is not observed in the case of flavone, but in the case of baicalein or baicalin, the mass transfer coefficient decreases as the pH increases. However, its pH
It can be seen that the decrease of the mass transfer coefficient with the increase of the is significantly higher for baicalin than for baicalein, and that the higher the pH, the greater the difference in the permeability of baicalin and baicalein and flavones. In the vicinity of pH4, baicalein or flavone is permeated about 6 times better than baicalin.

【0032】バイカリンおよびバイカレインの混合系に
よる、ある時間の濃度(C)と初濃度(C0)の比(C/C0)を時
間に対してプロットしたものを図5として示した。
[0032] shown by mixed system of baicalin and baicalein, a plot against time ratio of a certain time density (C) and initial concentration (C 0) (C / C 0) as FIG.

【0033】以上詳細したように、本発明の分離方法に
より、生薬中の活性成分を単独系においても混合系にお
いても短時間で、かつ高選択的に分離することができ
る。
As described above in detail, the separation method of the present invention enables highly active separation of active ingredients in crude drugs both in a single system and in a mixed system in a short time.

【図面の簡単な説明】[Brief description of drawings]

【図1】 様々なpHについてのバイカリンの単独系によ
る、各時間における濃度(C)と初濃度(C0)の比(C/C0)の
対数とその時間との関係を示す図。
FIG. 1 is a diagram showing the relationship between the logarithm of the ratio (C / C0) of the concentration (C) and the initial concentration (C0) at each time and the time by a baicalin single system at various pHs.

【図2】 様々なpHについてのバイカレインの単独系に
よる、各時間における濃度(C)と初濃度(C0)の比(C/C0)
の対数とその時間との関係を示す図。
Figure 2: Ratio (C / C0) of concentration (C) and initial concentration (C0) at each time by baicalein alone system at various pH
The figure which shows the relationship of the logarithm of and its time.

【図3】 様々なpHについてのフラボンの単独系によ
る、各時間における濃度(C)と初濃度(C0)の比(C/C0)の
対数とその時間との関係を示す図。
FIG. 3 is a diagram showing the relationship between the logarithm of the ratio (C / C0) of the concentration (C) and the initial concentration (C0) at each time and the time, in the case of a single system of flavone for various pH.

【図4】 図1、図2および図3の直線部分の傾きから求
めた物質移動係数と水溶液pHとの関係を示す図。
FIG. 4 is a diagram showing the relationship between the pH of an aqueous solution and the mass transfer coefficient obtained from the slopes of the straight line portions in FIGS. 1, 2 and 3.

【図5】 pH6におけるバイカリンおよびバイカレイン
の混合系による、各時間における濃度(C)と初濃度(C0)
の比(C/C0)の対数とその時間との関係を示す図。
FIG. 5: Concentration (C) and initial concentration (C 0 ) at each time by a mixed system of baicalin and baicalein at pH 6
The figure which shows the relationship between the logarithm of the ratio (C / C 0 ) and its time.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ポリビニールアルコール4〜8wt%、アセ
トアミド1〜2wt%および水90〜95wt%からなる水溶液から
調製されるポリビニールアルコール膜を用いた配糖体構
造を有するフラボン骨格の化合物と配糖体構造を有さな
いフラボン骨格の化合物の分離方法。
1. A compound having a flavone skeleton having a glycoside structure using a polyvinyl alcohol membrane prepared from an aqueous solution containing 4 to 8 wt% of polyvinyl alcohol, 1 to 2 wt% of acetamide and 90 to 95 wt% of water. A method for separating a flavone skeleton compound having no sugar structure.
【請求項2】 配糖体構造を有さないフラボン骨格の化
合物がバイカレイン、フラボン、フラボノール、7,8-ジ
ヒドロキシフラボンから選ばれる少なくとも一つの化合
物であり、配糖体構造を有するフラボン骨格の化合物が
バイカリンである請求項1記載の分離方法。
2. A flavone skeleton compound having a glycoside structure, wherein the flavone skeleton compound having no glycoside structure is at least one compound selected from baicalein, flavone, flavonol and 7,8-dihydroxyflavone. The method according to claim 1, wherein is baicalin.
JP5519095A 1994-02-24 1995-02-21 Method for separating compound of flavone skeleton having glucide structure from compound of flavone skeleton not having glycoside structure Pending JPH07285986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5519095A JPH07285986A (en) 1994-02-24 1995-02-21 Method for separating compound of flavone skeleton having glucide structure from compound of flavone skeleton not having glycoside structure

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP5132994 1994-02-24
JP6-51329 1994-02-24
JP5519095A JPH07285986A (en) 1994-02-24 1995-02-21 Method for separating compound of flavone skeleton having glucide structure from compound of flavone skeleton not having glycoside structure

Publications (1)

Publication Number Publication Date
JPH07285986A true JPH07285986A (en) 1995-10-31

Family

ID=26391861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5519095A Pending JPH07285986A (en) 1994-02-24 1995-02-21 Method for separating compound of flavone skeleton having glucide structure from compound of flavone skeleton not having glycoside structure

Country Status (1)

Country Link
JP (1) JPH07285986A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103145782A (en) * 2013-01-14 2013-06-12 李玉山 Novel extracting process of high-purity baicalin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103145782A (en) * 2013-01-14 2013-06-12 李玉山 Novel extracting process of high-purity baicalin

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