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Title:
PLANT EXTRACTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/036896
Kind Code:
A1
Abstract:
Disclosed is a plant extraction method, comprising the following steps: 1) preparation of a crude plant extraction solution; 2) separation of the crude extraction solution through a cation resin and an optional anion resin to obtain a collection solution; 3) concentration of the collection solution obtained in step 2); 4) alcohol precipitation of the concentration solution obtained in step 3); and optionally, step 5) concentration and drying. The method can effectively reduce the content of heavy metals in an extract, and reduce the amount of ethanol in an extraction process, thereby improving the product quality and lowering the production cost, and industrial production efficiency and safety are improved. The extract obtained by means of the method can be used to prepare drugs for reducing fat, treating abnormal glucose tolerance, treating diseases related to abnormal blood glucose, and regulating intestinal flora, and can be processed into food products, health-care products or drinks.

Inventors:
LIU YULING (CN)
ZHU XIANGYANG (CN)
JIN YIQUN (CN)
LIU ZHIHUA (CN)
YANG JUNDONG (CN)
Application Number:
PCT/CN2020/110179
Publication Date:
March 04, 2021
Filing Date:
August 20, 2020
Export Citation:
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Assignee:
BEIJING WEHAND BIO PHARMACEUTICAL CO LTD (CN)
GUANGXI WEHAND BIO PHARMACEUTICAL CO LTD (CN)
International Classes:
A61K36/896; A23L2/38; A23L33/105; A61K36/342; A61K36/605; A61K36/88; A61P1/00; A61P3/06; A61P3/10
Foreign References:
CN110393738A2019-11-01
CN1611487A2005-05-04
CN104402801A2015-03-11
CN104844723A2015-08-19
CN102462817A2012-05-23
CN1850166A2006-10-25
Other References:
ZHAI WENJUN, XU QING-MEI: "Research on the Divided Extraction of Rodgersia Aesculifolia-Batal and the Compound Formation ", JOURNAL OF SHAANXI INSTITUTE OF EDUCATION, vol. 23, no. 2, 1 May 2007 (2007-05-01), pages 62 - 64, XP055786532
WANG XINTIAN, HUANG MINGYUE, LIANG SHUNWEI: "Pharmacological Study of Erycibe obtusifolia Benth Causing Pupil Constriction", JOURNAL OF NEW MEDICINE, vol. 09, no. 06, 1 June 1978 (1978-06-01), pages 279 - 280, XP009526420, ISSN: 0253-9802
LING LI-XIN, ZHANG GUO-FEN, FENG-MING CHEN: "Study on production technology of steviosin extraction from Stevia rebaudiana", SCIENCE AND TECHNOLOGY OF FOOD INDUSTRY, vol. 34, no. 6, 1 January 2013 (2013-01-01), pages 257 - 261, XP055786530, DOI: 10.13386/j.issn1002-0306.2013.06.029
Attorney, Agent or Firm:
BEIJING TANLULAI PATENT AGENT LTD (CN)
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