JPS62178598A - Purification of sennoside - Google Patents

Purification of sennoside

Info

Publication number
JPS62178598A
JPS62178598A JP2006886A JP2006886A JPS62178598A JP S62178598 A JPS62178598 A JP S62178598A JP 2006886 A JP2006886 A JP 2006886A JP 2006886 A JP2006886 A JP 2006886A JP S62178598 A JPS62178598 A JP S62178598A
Authority
JP
Japan
Prior art keywords
sennoside
clay
solution
treated
adsorbent
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.)
Granted
Application number
JP2006886A
Other languages
Japanese (ja)
Other versions
JPH057400B2 (en
Inventor
Masana Iwata
岩田 将名
Kenzo Okada
憲三 岡田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maruzen Kasei Co Ltd
Original Assignee
Maruzen Kasei Co 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 Maruzen Kasei Co Ltd filed Critical Maruzen Kasei Co Ltd
Priority to JP2006886A priority Critical patent/JPS62178598A/en
Publication of JPS62178598A publication Critical patent/JPS62178598A/en
Publication of JPH057400B2 publication Critical patent/JPH057400B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To obtain sennoside useful as a purgative agent in high yield and purity and at a low cost, by dissolving crude sennoside to give an acidic aqueous solution, bringing the resultant aqueous solution into contact with a clay based adsorbent and eliminating the sennoside adsorbed on the above-mentioned adsorbent. CONSTITUTION:An organic solvent is completely removed from a sennoside- containing extract solution, etc., obtained from a senna leaf, rhubarb, etc., is completely removed to give an aqueous solution and an acid, e.g. dilute hydrochloric acid, etc., is added to adjust the pH to preferably 1.0-6.0 and afford a solution to be treated. A clay based adsorbent, e.g. acid clay, activated clay, etc., in an amount of normally 0.5-20% based on the solid content in the solution to be treated is charged into the solution to be treated and stirred. The above-mentioned adsorbent is then collected by filtration. The sennoside is then eluted from the above-mentioned adsorbent using methanol, ethanol, acetone, etc.

Description

【発明の詳細な説明】 産業上の利用分野 るものである。[Detailed description of the invention] Industrial applications It is something that

従来の技術 センノサイドは、センナ葉、大黄等に比較的多量に含ま
れているジアンスロン配糖体であって、センノサイドA
およびセンノサイドBのほか、少量のセンノサイドC,
D、E、Fなどの立体異性体がある。単離されたものは
、カルシウム塩の形で水に可溶になる。便通を促す作用
があり、下剤として有用な物質である。センナ葉や大黄
を水(アルカリを加えることらある)、含水有機溶媒等
で抽出処理すると容易に抽出されるが、抽出物そのもの
はセンノサイド以外の可溶性成分を多量に含むため、薬
効が低い。したがって、抽出物はなんらかの手段により
精製してから下剤として利用するのが普通である。
Conventional technology Sennoside is a dianthrone glycoside that is contained in relatively large amounts in senna leaves, rhubarb, etc.
and sennoside B, as well as small amounts of sennoside C,
There are stereoisomers such as D, E, and F. Isolated, it becomes soluble in water in the form of calcium salts. It has the effect of promoting bowel movements and is a useful substance as a laxative. Senna leaves and rhubarb are easily extracted using water (alkali may be added) or a water-containing organic solvent, but the extract itself contains large amounts of soluble components other than sennosides, so its medicinal efficacy is low. Therefore, the extract is usually purified by some means before being used as a laxative.

センノサイドの精製法としては、従来次のような方法が
知られている。
The following methods are conventionally known as methods for purifying sennosides.

■ 粗センノサイドを第四級アンモニウム塩で処理し、
センノサイドを水に難溶性の塩として分離する方法(特
公昭53−25003号) ■ 粗センノサイドを含水n−ブタノールで処理し、更
に(Lt、Hr 7 ルコ−ル%n ?’ :/J?浄
中入力烙(待Vn!’449−111’+ 90号) ■ 巨大網状構造を有する非極性合成吸着樹脂を用いる
方法(特開昭54−140709号) しかしながら、これら従来の精製法はいずれも満足でき
るものではなかった。すなわち、上記■の方法は高価な
第四級アンムニウム塩を多量に必要とするばかりでなく
脱塩のためのイオン交換樹脂も必要であるから、精製コ
ストは著しく高いものとなる。また■の方法は、n−ブ
タノールおよびセンノサイドの損失が多大であり、■の
方法も、多量の吸着樹脂と再生用有機溶媒を必要とし且
つそれらの劣化・損失が精製コストを高くするのが欠点
である。更にこれらの精製法によるときは、センノサイ
ドの純度が普通40〜60%程度にしかならず、精製度
をさらに高めようとするとセンノサイドの損失がふえ、
精製品が著しく高価なものになってしまうという問題が
あった。
■ Treat crude sennoside with quaternary ammonium salt,
Method for separating sennoside as a salt hardly soluble in water (Special Publication No. 53-25003) ■ Crude sennoside is treated with water-containing n-butanol, and further treated with (Lt, Hr 7 alcohol%n?' :/J? Nakainu Hikaru (Waiting Vn! '449-111'+ No. 90) ■ Method using non-polar synthetic adsorption resin having a giant network structure (Japanese Patent Application Laid-open No. 140709/1983) However, none of these conventional purification methods are satisfactory. In other words, method ① above not only requires a large amount of expensive quaternary ammunium salt, but also requires an ion exchange resin for desalting, so the purification cost is extremely high. In addition, method (2) causes a large loss of n-butanol and sennoside, and method (2) also requires a large amount of adsorption resin and organic solvent for regeneration, and their deterioration and loss increase purification costs. Moreover, when using these purification methods, the purity of sennoside is usually only about 40 to 60%, and if you try to further increase the degree of purification, the loss of sennoside increases.
There was a problem in that the refined product became extremely expensive.

発明が解決しようとする問題点 本発明は、従来のセンノサイド精製法が上述のような欠
点を持つものであったことに鑑み、より高純度のセンノ
サイドをより高収率で、しかもより低いコストで得られ
る新規なセン7サイドの精製法を提供しようとするもの
である。
Problems to be Solved by the Invention In view of the fact that the conventional sennoside purification method had the above-mentioned drawbacks, the present invention aims to produce sennoside of higher purity at a higher yield and at a lower cost. The present invention aims to provide a novel method for purifying the obtained Sen7side.

辿逓縛じ]ぢ欠するための千f2 本発明が提供するセン7サイドの精製法は、精製しよう
とするmセンノサイドをまず酸性の水溶液にして粘土系
吸着剤に接触させ、吸着剤にセン7サイドを選択的に吸
着させる。
The method for purifying sen7side provided by the present invention is to first make the m-sennoside to be purified into an acidic aqueous solution and bring it into contact with a clay-based adsorbent. 7 sides are selectively adsorbed.

次いで吸着されなかった不純物を含む被処理液と粘土系
吸着剤とを分離し、粘土系吸着剤よりセンノサイドを脱
着させて回収するものである。
Next, the liquid to be treated containing unadsorbed impurities and the clay-based adsorbent are separated, and the sennosides are desorbed from the clay-based adsorbent and recovered.

粘土系1吸着剤には種々のものがあるが、この方法で用
いる粘土系吸着剤として好適なものは、モンモリロナイ
ト、ハロイサイト、アロフェン、アタパルジャイト、パ
リフルスカイト、酸性白土、活性白土などであり、これ
らの中でも、酸性白土および活性白土は吸着能がすぐれ
、かつ安価で入手ら容易なので、特に好ましい。
There are various types of clay-based adsorbents, but suitable clay-based adsorbents for use in this method include montmorillonite, halloysite, allophane, attapulgite, parifulskite, acid clay, and activated clay. Among these, acid clay and activated clay are particularly preferred because they have excellent adsorption ability, are inexpensive, and are easily available.

粗センノサイドの酸性水溶液を粘土系吸着剤に接触させ
たときに起こる吸着は、センノサイドをよく吸着するが
センノサイド以外の植物体成分はほとんど吸着しない選
択的吸着である。このような選択的吸着は、被処理液が
中性ないしアルカリ性のときは生じない。粘土系吸着剤
によるセンノサイドの選択的吸着は、巨大網状構造を有
する非極性吸着樹脂やイオン交換樹脂による吸着の場合
とM似の、粘土粒子内部における吸着と陰イオン交換に
よるものと思われるが、吸着やイオン交換を行う極性基
の相違に基づき、非極性吸着樹脂やイオン交換樹脂によ
る吸着と比べるとはるかに強い選択性を示す。したがっ
て、粗センノサイドの酸性溶液を粘土系吸着剤に接触さ
せたのち粘土系吸着剤と被処理液とを分離すれば、セン
ノサイドと大部分の不純物との分離が行われる。
The adsorption that occurs when an acidic aqueous solution of crude sennoside is brought into contact with a clay-based adsorbent is a selective adsorption in which sennoside is well adsorbed, but plant components other than sennoside are hardly adsorbed. Such selective adsorption does not occur when the liquid to be treated is neutral or alkaline. The selective adsorption of sennosides by clay-based adsorbents is thought to be due to adsorption and anion exchange inside clay particles, similar to the adsorption by nonpolar adsorption resins and ion exchange resins with large network structures. Based on the difference in polar groups that perform adsorption and ion exchange, it exhibits much stronger selectivity than adsorption using nonpolar adsorption resins or ion exchange resins. Therefore, by bringing an acidic solution of crude sennoside into contact with a clay-based adsorbent and then separating the clay-based adsorbent from the liquid to be treated, sennoside and most of the impurities can be separated.

本発明の方法により精製することので鰺る粗センノサイ
ドは、センナ葉、大黄等から得られたセンノサイド含有
抽出液もしくは抽出物、およびこれらの精製物であって
さらに精製を必要とするものである。精製処理を行うに
当ってはこれを適当な濃度の水溶液とし、酸(たとえば
希塩酸、希硫酸、希硝酸など)を加えて、pt−rを望
ましくは1.0〜6.0に調整する。なお含水有機溶媒
を用いた抽出液の場合は、有機溶媒を完全に除いておく
The crude sennosides that can be purified by the method of the present invention are sennoside-containing extracts or extracts obtained from senna leaves, rhubarb, etc., and purified products thereof, which require further purification. In carrying out the purification treatment, this is made into an aqueous solution of an appropriate concentration, and an acid (for example, dilute hydrochloric acid, dilute sulfuric acid, dilute nitric acid, etc.) is added to adjust the pt-r to preferably 1.0 to 6.0. In the case of an extract using a water-containing organic solvent, the organic solvent should be completely removed.

被処理液と粘土系吸着剤とを接触させる方法は任意であ
るが、通常は被処理液中に粘土系吸着剤を投入して撹拌
し、その後、静置すればよい6粘土系吸着剤は、被処理
液中の固形分に対して0.5〜20%程度を用いる(適
量はその吸着剤のS類や被処理液中のセンノサイドの純
度により異なる)。
The method of bringing the liquid to be treated and the clay-based adsorbent into contact is arbitrary, but usually the clay-based adsorbent is added to the liquid to be treated, stirred, and then left to stand.6 Clay-based adsorbents About 0.5 to 20% of the solid content in the liquid to be treated is used (the appropriate amount varies depending on the S type of the adsorbent and the purity of sennoside in the liquid to be treated).

帛薯り九睡多稟小ψト↓τ11六大dし足i市面;ホL
本I〜耐1上  −φ上、−−シタン、遠心分離、ろ過
等により行う。
It's 9 times a day, 9 years ago, 6 years ago, 11 years ago.
Book I ~ Endurance 1 Upper - φ Upper - - Performed by using citron, centrifugation, filtration, etc.

センノサイドを吸着しtこ粘土系吸着剤よりセンノサイ
ドを脱着させるには、メタノール、エタノール等の低級
脂肪族アルコールやアセトン等の低級脂肪族ケトン等の
親水性有機溶媒、これら親水性有機溶媒と水との混合物
、アルカリ金属らしくはアルカリ土類金属の水酸化物も
しくは炭酸塩またはアンモニアを加えてアルカリ性にし
た水などを、粘土系吸着剤の約10〜50倍量、接触さ
せればよい。
In order to adsorb and desorb sennosides from a clay-based adsorbent, hydrophilic organic solvents such as lower aliphatic alcohols such as methanol and ethanol and lower aliphatic ketones such as acetone, and the combination of these hydrophilic organic solvents and water are used. A mixture of hydroxides or carbonates of alkali metals, such as alkaline earth metals, or water made alkaline by adding ammonia may be brought into contact in an amount about 10 to 50 times the amount of the clay-based adsorbent.

上記吸着処理および脱着処理は、2〜3回くり返すこと
により、はぼ定量的に、センノサイドの吸・脱着を生起
させることができる。
By repeating the adsorption treatment and desorption treatment 2 to 3 times, the adsorption and desorption of sennosides can be caused almost quantitatively.

吸着剤から脱着されたセンノサイドを含む脱着液がらセ
ンノサイドを回収するには、単なる濃縮によって溶媒ま
たは水を除く方法のほか、濃縮液にしたあと水酸化カル
シウム、酢酸カルシウム等を加え、更にメタノールを加
えて、セン7サイドをカルシウム塩の形で析出させる方
法などがある。
To recover sennosides from the desorption solution containing sennosides that have been desorbed from the adsorbent, it is possible to remove the solvent or water by simple concentration, or to make a concentrated solution, add calcium hydroxide, calcium acetate, etc., and then add methanol. For example, there is a method in which Sen7side is precipitated in the form of a calcium salt.

発明の効果 本発明の精製法は、上述のように安価な粘土系吸着剤を
使用するものであり、しかも粘土系吸着剤を特定の条件
で使用する場合に起こる高度の選択的吸着を利用するも
のでふLh・ら、従来の方法では容易には得られなかっ
たような高純度のセン7サイドが高収率で、且つ低いコ
ストで、容易に得られるという特長がある。
Effects of the Invention The purification method of the present invention uses an inexpensive clay-based adsorbent as described above, and also utilizes the highly selective adsorption that occurs when the clay-based adsorbent is used under specific conditions. Monodefu Lh. et al. have the advantage that high-purity Sen7side, which cannot be easily obtained by conventional methods, can be easily obtained in high yield and at low cost.

医1瀝 以下実施例を示して本発明を説明する。Medical 1st death The present invention will be explained below with reference to Examples.

実施例 1 炭酸水素ナトリウム50gを溶解した水10eに、セン
ナ葉(センノサイドAおよびB合計1.2%を含有)l
k、を投入し、3時間撹拌してセンノサイドを抽出した
。抽出液を分離したのち、抽出残渣に水10eを加えて
2回抽出を行い、抽出液合計25.2 Qを得た。この
抽出液に、希塩酸を加えてpHを4.0に調整し、次い
で活性白土15gを添加して1時間撹拌し、センノサイ
ドを吸着させた。このあと#置し、沈降した活性白土と
上澄液とをデカンチーシコンで分離した。
Example 1 Senna leaves (containing a total of 1.2% of sennosides A and B) were added to 10e of water in which 50g of sodium hydrogen carbonate was dissolved.
k, and stirred for 3 hours to extract sennosides. After separating the extract, 10e of water was added to the extraction residue and extraction was performed twice to obtain a total of 25.2 Q of extract. Dilute hydrochloric acid was added to this extract to adjust the pH to 4.0, and then 15 g of activated clay was added and stirred for 1 hour to adsorb sennosides. Thereafter, the precipitated activated clay and the supernatant were separated using a decanterizer.

上澄液について上記と同じ活性白土処理を2回繰り返し
た後、すべての活性白土を合せてろ過、水洗したく最後
の吸着処理の上澄液、ろ液および洗浄液を合せてその中
のセンノサイドを定量したところ、セン7サイドAおよ
び8合計量で0.06gであった。)。
After repeating the same activated clay treatment twice for the supernatant liquid, all the activated clay is combined, filtered, and washed with water.The supernatant liquid, filtrate, and washing liquid from the last adsorption process are combined to remove the sennosides therein. When quantitatively determined, the total amount of Sen7 Side A and 8 was 0.06 g. ).

洗浄後の活性白土を次いで85%メタノール1e中に投
入し、1時間撹拌を続けてセンノサイドを肌着させてか
ら静置した。沈降した活性白土と上澄液とをデカンテー
ションで分離し、活性白土に再度同様の脱着処理を施し
、最後に活性白土をろ過し85%メタ/−ル100m1
で洗浄した。すべての上澄液、ろ液および洗浄液を合せ
た脱着液中のセン7サイドを定量したところ、センノサ
イドAおよび8合計量で11゜7gであった(回収率9
7.5%)。
The washed activated clay was then poured into 85% methanol 1e, stirred continuously for 1 hour to coat the sennoside, and then left to stand. The precipitated activated clay and the supernatant liquid are separated by decantation, the activated clay is subjected to the same desorption treatment again, and finally the activated clay is filtered to obtain 100ml of 85% methanol.
Washed with. Sennoside A and 8 were quantified in the desorption solution containing all the supernatant, filtrate, and washing solution, and the total amount of sennoside A and 8 was 11.7 g (recovery rate 9
7.5%).

上記脱着液を15On+1になるまで40℃以下で減圧
濃縮し、得られた濃縮液を水酸化カルシウムで中和した
のち無水メタノール1.35 Qを加え、センノサイド
をセンノサイドカルシウムとして析出させた。析出物を
ろ別し、減圧下に40°Cで乾燥し、黄褐色の粉末17
.7g(センノサイド八およびBの合計含有量65%、
原料中のセンノサイド基準の回収率95.9%)を得た
The desorption solution was concentrated under reduced pressure at 40° C. or below until the concentration reached 15On+1, and the resulting concentrated solution was neutralized with calcium hydroxide, and then 1.35 Q of anhydrous methanol was added to precipitate sennosides as sennoside calcium. The precipitate was filtered off and dried at 40°C under reduced pressure to give a yellowish brown powder 17.
.. 7g (total content of sennosides 8 and B 65%,
A recovery rate of 95.9% based on sennoside in the raw material was obtained.

実施例 2 70%メタ/−ル5eに、実施例1で用いたものと同じ
センナ葉1に、を投入し、3時間攪拌してセンノサイド
を抽出した。抽出液を分離したのち、抽出残渣に70%
メタノール5eを加えて2回抽出を行い、抽出液合計i
3.ieを得た。
Example 2 Senna leaves 1, the same as those used in Example 1, were added to 70% methanol 5e and stirred for 3 hours to extract sennosides. After separating the extract, 70% of the extraction residue is
Extraction was performed twice by adding methanol 5e, and the total extract i
3. I got ie.

この抽出液を40℃以下で減圧濃縮し、得られた濃縮液
に水10gを加え、さらに希硫酸を加えてpHを2.0
に調整し、次いで酸性白土10gを添加して1時間撹拌
し、センノサイドを吸着させた。このあと静置し、沈降
した酸性白土と上澄液とをデカンテーションで分離した
。上澄液について上記と同じ酸性白土処理を2回繰り返
した後、すべての酸性白土を合せてろ過、水洗した(最
後の吸着処理の上澄液、ろ液および洗浄液を合せてその
中のセンノサイドを定量したところ、センノサイドAお
よび8合計量で0.1gであった。)。
This extract was concentrated under reduced pressure at a temperature below 40°C, 10 g of water was added to the obtained concentrate, and diluted sulfuric acid was further added to adjust the pH to 2.0.
Then, 10 g of acid clay was added and stirred for 1 hour to adsorb sennosides. Thereafter, the mixture was allowed to stand, and the precipitated acid clay and the supernatant liquid were separated by decantation. After repeating the same acid clay treatment as above twice for the supernatant liquid, all the acid clay was combined, filtered, and washed with water. When quantified, the total amount of Sennoside A and 8 was 0.1 g.)

洗浄後の酸性白土を次いで水le中に投入し、アンモニ
ア水を加えてpHを10.0に調整し、1時間撹拌を続
けてセンノサイドを脱着させてから静置した。沈降した
酸性白土と上澄液とをデカンテーションで分離し、酸性
白土に再度同様の脱着処理を施し、最後に酸性白土をろ
過し、水洗した。すべての上澄液、ろ液および洗浄液を
合せた脱着液中のセンノサイドを定量したところ、セン
ノサイドAおよび8合計量で11.3gであった(回収
率94.1%)。
The washed acid clay was then poured into water, aqueous ammonia was added to adjust the pH to 10.0, stirring was continued for 1 hour to desorb sennosides, and the mixture was allowed to stand still. The precipitated acid clay and the supernatant liquid were separated by decantation, the acid clay was again subjected to the same desorption treatment, and finally the acid clay was filtered and washed with water. When the amount of sennoside in the desorption liquid, which was a combination of all the supernatant liquid, filtrate, and washing liquid, was quantified, the total amount of sennosides A and 8 was 11.3 g (recovery rate 94.1%).

以下実施例1と同様に繰作して、黄褐色の粉末16.5
g(センノサイドAおよびBの合計含有量67%、原料
中のセンノサイド基準の回収率92.1%)を得た。
The following procedure was repeated in the same manner as in Example 1, and 16.5% of yellowish brown powder was obtained.
g (total content of sennosides A and B: 67%, recovery rate based on sennosides in the raw material: 92.1%).

注:センノサイドの定量は下記条件の高速液体クロマト
グラフィーによる。
Note: Sennosides are quantified by high performance liquid chromatography under the following conditions.

カラム: 7z−Boodol+ak cl11移動W
I: H2O: AcCN : Ac0H=84  :  1
5  :  1検出:UV341)nm 流速: 2ml/min
Column: 7z-Boodol+ak cl11 movement W
I: H2O: AcCN: Ac0H=84:1
5:1 detection: UV341)nm Flow rate: 2ml/min

Claims (4)

【特許請求の範囲】[Claims] (1)粗センノサイドを酸性の水溶液にして粘土系吸着
剤に接触させ、次いで被処理液と分離した粘土系吸着剤
よりセンノサイドを脱着させて回収することを特徴とす
るセンノサイドの精製法。
(1) A method for purifying sennoside, which comprises making crude sennoside into an acidic aqueous solution, bringing it into contact with a clay-based adsorbent, and then desorbing and recovering the sennoside from the clay-based adsorbent separated from the liquid to be treated.
(2)粘土系吸着剤としてモンモリロナイト、ハロイサ
イト、アロフェン、アタパルジャイト、パリゴルスカイ
ト、酸性白土または活性白土を用いる特許請求の範囲第
1項記載の精製法。
(2) The purification method according to claim 1, in which montmorillonite, halloysite, allophane, attapulgite, palygorskite, acid clay or activated clay is used as the clay-based adsorbent.
(3)親水性有機溶媒、含水有機溶媒またはアルカリ性
の水によりセンノサイドを脱着させる特許請求の範囲第
1項記載の精製法。
(3) The purification method according to claim 1, in which sennosides are desorbed using a hydrophilic organic solvent, a water-containing organic solvent, or alkaline water.
(4)粗センノサイドがセンナ葉または大黄の水抽出物
である特許請求の範囲第1項記載の精製法。
(4) The purification method according to claim 1, wherein the crude sennoside is an aqueous extract of senna leaves or rhubarb.
JP2006886A 1986-02-03 1986-02-03 Purification of sennoside Granted JPS62178598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006886A JPS62178598A (en) 1986-02-03 1986-02-03 Purification of sennoside

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006886A JPS62178598A (en) 1986-02-03 1986-02-03 Purification of sennoside

Publications (2)

Publication Number Publication Date
JPS62178598A true JPS62178598A (en) 1987-08-05
JPH057400B2 JPH057400B2 (en) 1993-01-28

Family

ID=12016777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006886A Granted JPS62178598A (en) 1986-02-03 1986-02-03 Purification of sennoside

Country Status (1)

Country Link
JP (1) JPS62178598A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06510412A (en) * 1992-06-11 1994-11-17 ソニー エレクトロニクス インコーポレイテッド User-selectable responses to alerts sent from cellular phone base stations
US5710260A (en) * 1991-06-25 1998-01-20 Madaus Ag Method of extracting sennosides A, B and A1
JP2008266228A (en) * 2007-04-23 2008-11-06 National Agriculture & Food Research Organization Method of saccharification and retrieval for biomass

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105254689B (en) * 2015-11-04 2018-12-04 安徽九方药物研究院有限公司 Sennoside AB salt compound and its preparation method and application

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5710260A (en) * 1991-06-25 1998-01-20 Madaus Ag Method of extracting sennosides A, B and A1
JPH06510412A (en) * 1992-06-11 1994-11-17 ソニー エレクトロニクス インコーポレイテッド User-selectable responses to alerts sent from cellular phone base stations
JP2008266228A (en) * 2007-04-23 2008-11-06 National Agriculture & Food Research Organization Method of saccharification and retrieval for biomass

Also Published As

Publication number Publication date
JPH057400B2 (en) 1993-01-28

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