Method of extracting proteins and amino acids from enzymolysis waste liquid of porcine small intestinal mucous membrane

Abstract

The present invention relates to a method of extracting proteins and amino acids from enzymolysis waste liquid of a porcine small intestinal mucous membrane. The method belongs to a sewage treatment industry engineering technology in chemical and biological fields. The purpose of the invention is to seek a method which not only can process biochemical waste liquid and recycle feed-grade proteins and amino acids to turn waste into wealth, but also can recycle reuse water and make sewage meet the environmental protection requirements, i.e., up-to-standard discharging. The method has remarkable advantages that proteins and lipids are precipitated by two food-grade celluloses from water through flocculation, the product can be used as a feed; microfiltration and nanofiltration are adopted to remove various substances with molecular weight greater than 300 from water; amino acids are adsorbed by resins; and activated carbon is used to deodorizing so as to make the saline solution can be recycled and largely reduce the COD value of the sewage. Moreover, the method can process all sewage with the similar properties, has good investment prospects, operability and economical efficiency, and is an ideal choice for processing the present type of sewage.

Description

Technical field: [0001] The invention belongs to the sewage treatment engineering technology of environmental protection in the field of biochemical industry. Specifically, it is to use food-grade fiber to treat waste liquid containing protein and amino acid by physical and chemical methods, recover protein and amino acid products from it, and turn waste into treasure, so that waste liquid can be recycled or discharged up to standard. method. Background technique: [0002] In the biochemical industry, animal tissues are used as raw materials, such as intestinal mucosa, cartilage, etc., and after heparin sodium or chondroitin sulfate is extracted by enzymatic hydrolysis or salt hydrolysis, the waste liquid contains oil, fiber, protein, and small peptides. Proteins, amino acids and other components are usually treated with bacteria. Because the salinity in the water is sometimes too high, sometimes it inhibits bacterial reproduction or the production volume is unstable. As a ...

AI Technical Summary

Problems solved by technology

[0002] In the biochemical industry, animal tissues are used as raw materials, such as intestinal mucosa, cartilage, etc., and after heparin sodium or chondroitin sulfate is extracted by enzymatic hydrolysis or salt hydrolysis, the waste liquid contains oil, fiber, protein, and small peptides. Proteins, amino acids and other components are usually treated with bacteria. Because the salinity in the water is sometimes too high, sometimes it inhibits bacterial reproduction or the production volume is unstable. As a result, the unit area treated by this method is relatively small, and the product cannot be recycled. Fine control is difficult

It is difficult to recycle the waste liquid after treatment in a slightly larger plant or discharge it up to standard