Title:
METHOD FOR REMOVING BENZO[Α]PYRENE FROM LIPOSOLUBLE NATURAL EXTRACT
Document Type and Number:
WIPO Patent Application WO/2017/084493
Kind Code:
A1
Abstract:
Disclosed is a method for removing benzo[α]pyrene from a liposoluble natural extract. The method of the present invention comprises adding a suitable solvent to a crude natural extract product so as to obtain a mixed material; heating the mixed material, stirring same until uniform, cooling and layering same, and then separating the upper layer from the lower layer so as to obtain a precipitate and a filtrate; washing the precipitate with a small amount of a solvent so as to obtain a washed product and a washing solution; removing the solvent from the washed product at a low temperature so as to obtain a finished product; and directly recycling the filtrate and the washing solution as solvents. The present method achieves the purification of the crude natural extract product and the removal of benzo[α]pyrene in one step, and is a novel method which is simple, highly efficient, feasible and easy for industrial applications.
Inventors:
LIAN YUNHE (CN)
GAO WEI (CN)
CHENG YUANXIN (CN)
YANG XIANGYU (CN)
AN XIAODONG (CN)
DUAN ZHIPENG (CN)
ZHANG ZHIMING (CN)
GAO WEI (CN)
CHENG YUANXIN (CN)
YANG XIANGYU (CN)
AN XIAODONG (CN)
DUAN ZHIPENG (CN)
ZHANG ZHIMING (CN)
Application Number:
PCT/CN2016/104223
Publication Date:
May 26, 2017
Filing Date:
November 01, 2016
Export Citation:
Assignee:
CHENGUANG BIOTECH GROUP CO LTD (CN)
International Classes:
C07C403/24; C07C7/00; C07C11/21; C09B61/00
Foreign References:
| CN105481745A | 2016-04-13 | |||
| CN101455708A | 2009-06-17 | |||
| CN1384714A | 2002-12-11 |
Other References:
See also references of EP 3378851A4
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
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