The technology of extracting lecithin from the leftovers of leather beard catfish

A technology of catfish and leftovers, applied in the field of lecithin, can solve the problems of toxic extraction solvent, no improvement, robbing food resources, etc., and achieve the effect of reducing environmental pollution
CN104961764BInactive Publication Date: 2017-04-19燕京理工学院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
燕京理工学院
Publication Date
2017-04-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a technology for extraction of phosphatidylcholine from clarias gariepinus leftover. The technology comprises 1, mincing and triturating head and internal organs of clarias gariepinus at a temperature less than 50 DEG C, 2, adding an acetic acid-sodium acetate buffer solution into the triturated materials obtained by the step 1 to adjust pH as protease enzymolysis pH, heating the material to a temperature of 37-45 DEG C, adding 0.015-0.075% of protease into the materials and carrying out enzymolysis for 60-100min, 3, adding extract into the enzymolysis product obtained by the step 2, carrying out stirring, carrying out extraction at a temperature of 35-45 DEG C for 60-100min and carrying out pressure reduction pumping filtration to obtain extract and 4, adding NaCl into the extract obtained by the step 3, carrying out stirring dissolution, carrying out standing for 3-4h to obtain precipitates and carrying out drying at a temperature less than 50 DEG C. The technology utilizes fish leftover, realizes waste recycle, prevents competition with human and animals in nutrition resources, reduces environmental pollution and has important ecological and economic meaning.
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Description

technical field

[0001] The invention relates to the technical field of lecithin, in particular to a process for extracting lecithin from leftovers of catfish. Background technique

[0002] Lecithin, broadly referred to as lecithin, refers to the common name for various commercially available organophosphate products. Its main components are phosphatidylcholine (PC), phosphatidylcholine (PE), phosphatidic acid and phosphoinositide (PI). In the narrow sense, lecithin refers to phosphatidylcholine, which is phosphati-dycholine in English, which is a phospholipid-containing substance composed of glycerol choline phosphoric acid saturated and unsaturated fatty acids.

[0003] At present, lecithin products are mainly extracted from plant hydration oils such as soybean oil and rapeseed oil, or animal brains and egg yolks, especially egg yolks, which have the highest content, but the cost of extracting lecithin from egg yolks is relatively high. According to literature reports, le...

Claims

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