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Patent Searching and Data


Title:
METHOD FOR EXTRACTING USEFUL SUBSTANCES FROM SHRIMP SHELLS
Document Type and Number:
WIPO Patent Application WO/2020/228713
Kind Code:
A1
Abstract:
Disclosed is a method for extracting useful substances from shrimp shells. The method comprises: crushing the shrimp shells, mixing the crushed shrimp shells and water, then heating same to 28℃-35℃, adjusting the pH to 6.8-7.5, preferably 6.8-7, then adding an alkaline protease and mixing same, heating same to 42℃-48℃, performing constant-temperature enzymolysis for 50-70 min, and performing sieving to obtain an enzymatic hydrolysate and solid residues; performing centrifugal separation treatment on the enzymatic hydrolysate to obtain a shrimp protein deposit containing astaxanthin; mixing the shrimp protein deposit and water, performing heating while stirring, adjusting the pH to 6.8-7.0, performing heating to 58℃-60℃, adding vegetable oil, and performing emulsification for 50-70 min under stirring to obtain an emulsion; and performing centrifugation on the emulsion, and performing layering to obtain, in an upper layer, oil containing the astaxanthin, to obtain, in a middle layer, water, and to obtain, in a lower layer, a shrimp protein. The method of the present invention uses waste biomass obtained after shrimps are processed as a raw material, and can simultaneously extract several high-value substances, thereby not only improving the utilization rate of the raw material, but also shortening the production cycle; and no organic solvent is added, such that the method is clean, green and environmentally friendly.

Inventors:
LIU YUSEN (CN)
LIU HONGCHANG (CN)
Application Number:
PCT/CN2020/089910
Publication Date:
November 19, 2020
Filing Date:
May 13, 2020
Export Citation:
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Assignee:
HUNAN BEIBEISHENG BIOTECHNOLOGY CO LTD (CN)
International Classes:
C07C403/24; C07C51/41; C07C59/265; C08B37/08
Foreign References:
CN1775816A2006-05-24
CN103172763A2013-06-26
CN109735392A2019-05-10
CN110143903A2019-08-20
Other References:
SONG, SUMEI: "Extraction and Puirifcation of Astaxanthin from Antarctic Krill Shells", CHINESE MASTER’S THESES FULL-TEXT DATABASE,ENGINEERING SCIENCE AND TECHNOLOGY I, 15 February 2014 (2014-02-15), pages 1 - 55, XP009524317, DOI: 20200801102024Y
Attorney, Agent or Firm:
CHANGSHA ZONEKEY PATENT LAW FIRM (CN)
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