WO2012100612A1 - 苦丁茶冬青叶的提取方法、总皂苷及其用途 - Google Patents
苦丁茶冬青叶的提取方法、总皂苷及其用途 Download PDFInfo
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- WO2012100612A1 WO2012100612A1 PCT/CN2011/084377 CN2011084377W WO2012100612A1 WO 2012100612 A1 WO2012100612 A1 WO 2012100612A1 CN 2011084377 W CN2011084377 W CN 2011084377W WO 2012100612 A1 WO2012100612 A1 WO 2012100612A1
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- Prior art keywords
- ethanol
- kudingcha
- holly
- leaves
- aqueous solution
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
- C07H15/20—Carbocyclic rings
- C07H15/24—Condensed ring systems having three or more rings
- C07H15/256—Polyterpene radicals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
- A61K31/704—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
- A61K36/18—Magnoliophyta (angiosperms)
- A61K36/185—Magnoliopsida (dicotyledons)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/06—Antihyperlipidemics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
- A61K2236/30—Extraction of the material
- A61K2236/33—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones
- A61K2236/333—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones using mixed solvents, e.g. 70% EtOH
Definitions
- the invention relates to a method for extracting holly leaves of Kudingcha and the total saponins of Kudingcha holly leaves and the use thereof.
- the present invention relates to a method for extracting a total saponin fraction of holly leaf of Kudingcha, and the total saponin extracted by the method can be used for lowering cholesterol, lowering blood lipids, and resisting atherosclerosis. Background technique
- Hyperlipidemia includes high cholesterol and high triglycerides, the former is far more harmful than the latter.
- drug-induced lipid-lowering therapy is the most effective treatment for hyperlipidemia.
- the effective drugs for lowering cholesterol are mainly statins. These drugs are mainly used to combat arteriosclerosis caused by hypercholesterolemia, and the mechanism of action is to inhibit liver cholesterol synthesis.
- statins have obvious toxic effects on liver and muscle, and at the same time leads to increased transaminase.
- Rheumatoidosis and acute renal failure occur in a small number of patients. Although several generations of drug structure have been modified, the side effects have not been solved. .
- Kudingcha is a traditional folk drink. It has been used as a health tea for weight loss, blood fat reduction, blood pressure lowering, detoxification and detoxification for nearly a thousand years. There are many varieties of Kuding tea on the market, according to the survey.
- the leaves of 22 plants can be used as Kudingcha, but the specific kind of Kudingcha has better effects on lowering blood fat and lowering blood pressure, which is not known, resulting in consumers spending a lot of money, but the effect of lowering blood fat is very Micro, even no effect.
- the inventors of the present invention have systematically studied and found that only the leaves of Ilex kudingcha C. LTseng derived from the genus Ilex have a very significant hypolipidemic and anti-atherosclerotic effect.
- the active ingredient is a saponin component, and the aglycon of the saponin component contained in the plant is also significantly different from other sources of Kudingcha.
- the inventors found that the saponins of holly leaves of Kudingcha have obvious effects of lowering cholesterol and anti-atherosclerosis, and their action intensity is comparable to that of statins, but its mechanism and mechanism Statins are completely different.
- the saponins also have the effects of lowering triglycerides, anti-oxidation, kidney protection, and improving blood rheology.
- Studies on the mechanism of action indicate that the mechanism of hypolipidemic effect of Kudingcha Holly Saponin is It inhibits the activity of intestinal and hepatic acyl-CoA cholesterol acyltransferase (ACAT), thereby inhibiting cholesterol intestinal absorption.
- ACAT hepatic acyl-CoA cholesterol acyltransferase
- the content of isochlorogenic acid in the extract of Kudingcha holly leaves extracted according to the conventional Chinese herbal medicine extraction method is much higher than that of Kudingcha saponin. The inventors found that isochlorogenic acid has the effect of increasing blood lipids.
- the present invention provides the following technical solutions:
- a method for extracting holly leaf of Kudingcha may comprise the following steps: (1) refluxing the holly leaf of Kudingcha with 50 ⁇ 70% aqueous solution of ethanol; (2) filtering the extract and removing the ethanol therein (3) The solution obtained in the step (2) is adsorbed on the macroporous resin column, followed by water, 10 ⁇ 30% alkaline ethanol aqueous solution having a pH of 9-11, 10 ⁇ 30% ethanol aqueous solution and 50-70%. The resin column is eluted with an aqueous ethanol solution; (4) The solution obtained by eluting with 50-70% aqueous ethanol solution is collected, concentrated, and dried.
- the concentration of ethanol in the step (1) may preferably be 55-65%, and most preferably 60%; the ethanol concentration of the 50-70% ethanol aqueous solution in the step (3) may be preferably It is 55 to 65%, and most preferably 60%.
- the concentration of the aqueous ethanol solution means the volume percentage concentration of ethanol in an aqueous ethanol solution.
- the operation method of the reflux extraction of the step (1) is known to those skilled in the art, and the amount of the aqueous ethanol solution in the operation can be determined according to the amount of the raw material, for example, an aqueous solution of ethanol and a raw material.
- the weight ratio may be 2 ⁇ 20:1, preferably 5-15:1; the number of extractions may be 1 ⁇ 8 times, preferably 2 ⁇ 4 times; the time of each reflux extraction may be 0.5 ⁇ 5 hours, preferably For 0.5 to 2 hours, the time of each reflux extraction may be the same or different, and the concentration of ethanol used for each reflux may be the same or different, and the amount of ethanol used for each reflux may be the same or different.
- it can be refluxed for 1 hour using 60 times ethanol of 10 times the weight of the raw material. After the liquid was filtered, the mixture was refluxed with 60% ethanol of 8 times the weight of the raw material for 1 hour, and the extract was filtered, and then refluxed with 60% ethanol of 8 times the weight of the raw material for 1 hour, and then the filtrate separated by three reflux extractions was combined.
- the extraction method according to the present invention wherein the method of removing ethanol in the step (2) and the method of concentrating in the step (4) are known to those skilled in the art, and for example, may be distillation under reduced pressure.
- the method of drying in the step (4) is preferably vacuum drying.
- the process of the present invention may further comprise recovering the ethanol separated in step (2) and/or the ethanol separated in step (4) and again using the reflux extraction of step (1).
- the macroporous resin column used in the step (3) is a resin column commonly used in the art, and in the present invention, a styrene type macroporous adsorption resin such as D101 is preferable.
- the macroporous resin column may have a diameter to height ratio of 1:3 to 10, preferably 1:4 to 7, most preferably 1:6; and the weight ratio of the resin to the Kudingcha holly leaves may be 5 to 15:1. Preferably, it is 6-10:1, and most preferably 7:1.
- the elution process of the step (3) may be: first rinsing with 4 to 10 column volumes of water until the sugar-free reaction; Rinse with 5-10 times column volume of 10 ⁇ 30% alkaline ethanol solution with pH value of 9 ⁇ 11; then rinse with 2 ⁇ 5 times volume of 10 ⁇ 30% ethanol solution; finally use 3 ⁇ 6 times column volume 50 ⁇
- the resin column was eluted with a 70% aqueous ethanol solution.
- the step (3) is: adsorbing the HPD400A macroporous resin column on the solution obtained in the step (2) (the resin column diameter ratio is 1:4, resin and medicinal materials)
- the resin column was washed, and then the resin column was rinsed to neutral with 3 column volumes of 25% neutral ethanol.
- the resin column was eluted with 4 column volumes of 60% ethanol, and the 60% ethanol eluate was collected and evaporated. That is, the total saponin fraction of the holly leaf of Kudingcha is obtained.
- the pH of the aqueous alkaline ethanol solution in the step (3) may be most preferably 10.
- the method may further comprise the step (5) of combining a solution of 10 to 30% alkaline ethanol having a pH of 9 to 11 and a solution eluted with 10 to 30% aqueous ethanol solution. Adjust the pH value 2 ⁇ 3, concentrate and dry to obtain total isochlorogenic acid.
- the content of the part can reach more than 80%, which can reduce blood lipids and anti-atherosclerosis, and has a protective effect on the liver and kidney.
- the saponin of the holly leaf of the Kudingcha tea can be used alone or in combination with a statin to improve the efficacy and improve the side effects of the statin. Alcohol, a method of lowering blood lipids and anti-atherosclerosis.
- the total saponin of Kudingcha holly leaves provided by the invention has obvious effects of lowering cholesterol and anti-atherosclerosis, and its action intensity is comparable to that of statins, but the mechanism is completely different from that of statins.
- the extract has effects such as lowering triglycerides, anti-oxidation, kidney protection, and improving blood rheology.
- Studies on the mechanism of action indicate that the mechanism of hypolipidemic effect of saponin of Kudingcha is to inhibit the activity of acyl-CoA cholesterol acyltransferase (ACAT) in the intestine and liver, thereby inhibiting the intestinal absorption of cholesterol.
- ACAT acyl-CoA cholesterol acyltransferase
- Figure 1 is a high performance liquid chromatogram of sample A1 prepared in Example 1;
- Figure 2 is a high performance liquid chromatogram of sample C1 prepared in Comparative Example 1;
- Figure 3 is a high performance liquid chromatogram of sample C2 prepared in Comparative Example 2;
- Figure 4 is a high performance liquid chromatogram of sample C3 prepared in Comparative Example 3;
- Figure 5 shows the effect of total saponins of Kudingcha on the plasma total cholesterol level of ApoE-/- mice
- Figure 6 shows the effect of total saponins of Kudingcha on the plasma MDA levels of ApoE-/- mice
- Figure 8 shows the effect of total saponins of Kudingcha on the total cholesterol in feces
- Figure 9 shows the effect of total saponins of Kudingcha on the expression of ACAT2 mRNA in Caco-2 cells. The best way to implement the invention
- This embodiment is for explaining the extraction method of the Kudingcha holly leaves provided by the present invention.
- Adsorption The obtained solution was adsorbed on a HPD400A macroporous resin column, and the resin column was filled in a volume of 5 Kg, and the aspect ratio was 1:4, and the sample was repeatedly applied for 3 times, and the adsorption was static for 30 minutes;
- This embodiment is for explaining the extraction method of the Kudingcha holly leaves provided by the present invention.
- the extracted filtrate is distilled under reduced pressure to an alcohol-free taste, and the ethanol is recovered, and the relative density of the concentrated liquid is 1.06 to 1.08 (room temperature);
- Adsorption The obtained solution is adsorbed on the AB-8 macroporous resin column, the filling amount of the resin column is 3.5 Kg, and the aspect ratio is 1:8;
- This comparative example is used to illustrate the extraction method of Kudingcha holly leaves washed only with water during the washing process. Extraction, ethanol removal and adsorption processes were carried out in the same manner as in Example 1;
- This comparative example is used to illustrate the extraction method of Kudingcha holly leaves washed only with water and ethanol during the washing process.
- This comparative example is used to illustrate the extraction method of Kudingcha holly leaves washed only with water and ethanol during the washing process.
- FIG. 1 is a chromatogram of sample A1 prepared in Example 1
- FIG. 2 is a chromatogram of sample C1 prepared in Comparative Example 1
- FIG. 3 is a chromatogram of sample C2 prepared in Comparative Example 2
- FIG. 4 is a comparative example. 3 Chromatogram of sample C3 prepared.
- the peaks Kc, Ka, and Kd represent the three main components of Kudingcha holly saponin [KD-C), Kudingcha Saponin A (KDC-A), and The peak of saponin D (KDC-D)]
- peaks Ia, lb and Ic represent three isochlorogenic acid components (isochlorogenic acid B, isochlorogenic acid A and isochlorogenic acid C) The peak of the spectrum.
- Table 2 lists the HPLC results of the samples CI1, A2 and A2 prepared in Examples 1 and 2 and the samples CI, C2 and C3 prepared in Comparative Examples 1, 2 and 3.
- Table 3 lists the results of the determination of the total saponin content of the samples Cl, C2 and C3 prepared in the samples A1 and A2 prepared in Examples 1 and 2 and the samples 1, 2 and 3.
- ApoE-/- mice were randomly divided into 4 groups according to their body weight.
- Negative control group Normal diet for 7 weeks, and normal saline was administered by daily gavage.
- High-fat control group (HG) 0.2% high-cholesterol diet was fed for 7 weeks, and normal saline was administered by daily gavage.
- Atorvastatin treatment group After a week of feeding high cholesterol diet, atorvastatin (50 mg/kg/d) was given intragastrically, while continuing to give high cholesterol diet, once a day, course of treatment. For 6 weeks.
- Figure 5 shows the effect of total saponins of Kudingcha on the plasma total cholesterol (TC) level of ApoE-/- mice.
- ApoE-/- mice were fed a high-cholesterol diet for a week, and plasma total cholesterol increased from 300-400 mg/dL to about 800 mg/dL, and the administration of hyperglycemia began.
- the results showed that all drug-administered groups reduced plasma TC levels in mice compared to the high-fat control group.
- the plasma TC level of Kudingcha total saponins and atorvastatin group decreased by 30% ⁇ 35% after one week of administration, and the pharmacological effects were basically the same, with no significant difference. The effect lasted for six weeks and remained stable. 2.
- Figure 6 shows the effect of total saponins of Kudingcha on the plasma MDA level of ApoE-/- mice.
- the plasma MDA level in the high-fat control group increased about high fat at the sixth week of administration. 5 times before eating.
- the atorvastatin group and the saponin group significantly inhibited the increase in plasma MDA levels from the second week of administration, and continued until the end of administration.
- MDA levels in the atorvastatin group began to rise, reaching 16.5 nmol/L at the sixth week of administration, about 1.5 times higher than before administration; and the saponin group started from the administration to the experiment. At the end, there was almost no increase in plasma MDA levels.
- Figure 7 shows the results of the effect of total saponins of Kudingcha on the atherosclerotic area of aortic outflow tract in ApoE-/- mice.
- the high-fat control group (HG) was compared with the negative control group (CG), p ⁇ 0.05.
- the model was successful, and there were significant differences between the total saponins (SG) and atorvastatin (AG) and the HG group (P.01), indicating that both groups can significantly inhibit the aortic outflow tract.
- the total saponin of Kudingcha has no effect on the expression of other screening genes.
- the results of this study demonstrate that the mechanism of hypolipidemic effect of Kudingcha saponins may inhibit the intestinal and liver acyl-CoA cholesterol acyltransferase (ACAT) activity, thereby inhibiting the intestinal absorption of cholesterol.
- ACAT liver acyl-CoA cholesterol acyltransferase
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11856799.9A EP2668954B1 (en) | 2011-01-24 | 2011-12-21 | Extraction method, total saponin and use of ilex kudingcha c.j.tseng leaves |
JP2013550742A JP5955337B2 (ja) | 2011-01-24 | 2011-12-21 | 苦丁茶冬青の葉の抽出方法、総サポニンおよびその使用 |
US13/981,054 US9109003B2 (en) | 2011-01-24 | 2011-12-21 | Extraction method for Ilex kudingcha C. J. Tseng leaves, total saponins and use thereof |
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CN201110026026.XA CN102600214B (zh) | 2011-01-24 | 2011-01-24 | 苦丁茶冬青叶的提取方法、总皂苷及其用途 |
CN201110026026.X | 2011-01-24 |
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WO2012100612A1 true WO2012100612A1 (zh) | 2012-08-02 |
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PCT/CN2011/084377 WO2012100612A1 (zh) | 2011-01-24 | 2011-12-21 | 苦丁茶冬青叶的提取方法、总皂苷及其用途 |
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US (1) | US9109003B2 (zh) |
EP (1) | EP2668954B1 (zh) |
JP (1) | JP5955337B2 (zh) |
CN (1) | CN102600214B (zh) |
HK (1) | HK1173952A1 (zh) |
WO (1) | WO2012100612A1 (zh) |
Families Citing this family (10)
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CN102827001B (zh) * | 2011-06-16 | 2016-03-02 | 东莞市岭奥生物科技有限公司 | 一种苦丁茶冬青提取物 |
JP6224894B2 (ja) * | 2012-12-20 | 2017-11-01 | 花王株式会社 | クロロゲン酸類の安定化方法 |
CN103598367A (zh) * | 2013-11-12 | 2014-02-26 | 福建省亚热带植物研究所 | 一种苦丁茶冲剂的制备方法 |
CN104435025A (zh) * | 2014-12-29 | 2015-03-25 | 广西梧州制药(集团)股份有限公司 | 苦丁茶在制备治疗阿尔兹海默病药物方面的新用途 |
CN106420852B (zh) * | 2015-08-04 | 2020-01-03 | 上海凯屹医药科技有限公司 | 一种雾化苦丁茶和用途 |
JP7134976B2 (ja) * | 2017-08-09 | 2022-09-12 | 三栄源エフ・エフ・アイ株式会社 | 苦丁茶加工物 |
CN111366549A (zh) * | 2020-03-24 | 2020-07-03 | 广西壮族自治区人民医院 | 红心猕猴桃总皂苷含量的测定方法 |
CN113801758A (zh) * | 2021-09-22 | 2021-12-17 | 劲牌有限公司 | 一种降低保健酒生产过程总皂苷损耗和延缓货架期总皂苷衰减的方法 |
CN114264763A (zh) * | 2021-12-22 | 2022-04-01 | 金绿源(中国)生物科技有限公司 | 一种细梗香草的取样方法 |
CN115671065B (zh) * | 2022-10-27 | 2023-11-14 | 重庆市中药研究院 | 一种保肝养胃的药用片剂及其制作方法 |
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2011
- 2011-01-24 CN CN201110026026.XA patent/CN102600214B/zh active Active
- 2011-12-21 US US13/981,054 patent/US9109003B2/en active Active
- 2011-12-21 JP JP2013550742A patent/JP5955337B2/ja active Active
- 2011-12-21 WO PCT/CN2011/084377 patent/WO2012100612A1/zh active Application Filing
- 2011-12-21 EP EP11856799.9A patent/EP2668954B1/en active Active
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ZHENG J. ET AL: "Total saponins from Kuding tea (Ilex kudingcha C.J.Tseng) protect against kidney injury induced by hypercholesterolemia in apolipoprotein E knockout mice", CHINESE JOURNAL OF NEW DRUGS, vol. 18, no. 5, 31 December 2009 (2009-12-31), pages 429 - 433, XP008169801 * |
Also Published As
Publication number | Publication date |
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CN102600214A (zh) | 2012-07-25 |
JP2014504607A (ja) | 2014-02-24 |
HK1173952A1 (zh) | 2013-05-31 |
EP2668954A4 (en) | 2014-08-06 |
EP2668954B1 (en) | 2016-03-02 |
CN102600214B (zh) | 2014-10-08 |
US20130303469A1 (en) | 2013-11-14 |
JP5955337B2 (ja) | 2016-07-20 |
EP2668954A1 (en) | 2013-12-04 |
US9109003B2 (en) | 2015-08-18 |
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