Method for extracting and isolating lutein crystal from vegetable oil resin containing lutein diester

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United States of America Patent

PATENT NO 11920175
APP PUB NO 20210147353A1
SERIAL NO

17259161

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Abstract

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A method for extracting and isolating a lutein crystal from a vegetable oil resin containing a lutein diester, comprises: dissolving lipase into deionized water to form an enzyme solution; dissolving a lutein extract into an alcohol solvent containing the deionized water to form a uniform alcohol solution; adding the enzyme solution to the alcohol solution for performing hydrolysis, and stirring same to obtain a lutein solution; filtering and performing filtration isolation on the lutein solution to obtain a crystalline; re-dissolving the crystalline into a non-polar organic solvent, and using deionized water for washing a water-soluble impurity; recycling and cooling the organic solvent to obtain a recrystallization; and isolating and drying the recrystallization to obtain the lutein crystal. In this method, selectivity is strong, reaction time is short, no waste water is produced, process is environment-friendly and suitable for industrial production, and obtained lutein crystal is high in purity and yield.

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Patent Owner(s)

Patent OwnerAddress
ZHEJIANG MEDICINE CO LTD XINCHANG PHARMACEUTICAL FACTORY312500 NO 59 HUANCHENG EAST ROAD CHENGGUAN TOWN XINCHANG COUNTY SHAOXING CITY ZHEJIANG PROVINCE SHAOXING CITY ZHEJIANG PROVINCE 312500

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lao, Xuejun Shaoxing, CN 12 6
Shao, Kangzhong Shaoxing, CN 1 0
Wang, Qiuyan Shaoxing, CN 10 68
Wang, Shengfan Shaoxing, CN 2 0
Xie, Tian Shaoxing, CN 36 71
Xu, Xinde Shaoxing, CN 27 47
Yin, Xiaopu Shaoxing, CN 1 0
Zeng, Zhaowu Shaoxing, CN 4 1
Zheng, Jianyong Shaoxing, CN 4 0

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