Title:
PRODUCTION OF TEA LEAF SAPONIN
Document Type and Number:
Japanese Patent JP3810827
Kind Code:
B2
Abstract:
PURPOSE: To easily obtain at low cost in an industrially advantageous way a tea leaf saponin useful for the food area, medicines, quasi-drugs etc., by subjecting the hot water extraction residues of tea leaves to extraction with a hydrous lower alcohol.
CONSTITUTION: Tea leaves such as of Camellia sinensis (L) are subjected, either directly or, after steamed or put to normal tea manufacturing process, to hot water extraction; and the resultant extraction residues are further subjected to extraction with a hydrous lower alcohol such as hydrous methanol (pref. composed of 30-50wt.% of water and 70-50wt.% of a lower alcohol). Next, the resultant extract liquid is pref. either treated with water-insoluble polyvinylpyrrolidone or extraction-treated with ethyl acetate to remove the catechins existing in the above extract liquor.
Inventors:
Yuko saka
Terumi Uemura
Tomomi Sugiura
Terumi Uemura
Tomomi Sugiura
Application Number:
JP13773795A
Publication Date:
August 16, 2006
Filing Date:
June 05, 1995
Export Citation:
Assignee:
ITO EN Co., Ltd.
International Classes:
A61K36/00; C07G3/00; A61K36/18; A61P29/00; A61P37/08; C07J63/00; (IPC1-7): C07G3/00; A61K35/78; A61K35/78; //C07J63/00
Domestic Patent References:
| JP7061998A | ||||
| JP6116258A | ||||
| JP1175978A | ||||
| JP62061569A | ||||
| JP7061993A |
Attorney, Agent or Firm:
Masataka Oshima