A kind of method that utilizes heparin waste water to prepare nutrient attractant

Abstract

The invention discloses a method for preparing a nutrient phagostimulant by utilizing heparin wastewater. The method comprises the following steps: extracting wastewater generated by heparin by an enzymolysis method; adding a flocculant for precipitating to obtain a primary precipitate and a supernate; performing concentration by nanofiltration on the supernate; recovering and recycling the clean water which passes through a nanofiltration membrane; merging the concentrate and the primary precipitate; adding an acid to adjust the PH to be 2 to 3; performing secondary precipitating; siphoning the supernate; adding a decolorizer into the remaining precipitate for decolorizing; performing vacuum concentration on the decolorized remaining precipitate; adding amino acids and saccharides into the obtained vacuum concentrate for performing a Maillard reaction; spray-drying to obtain the phagostimulant. According to the method, water resource is recovered and utilized; the environment is purified; the economic benefit is improved; the unique stench of small intestines is improved by the prepared phagostimulant; the palatability and the food calling property of pets are enhanced; the phagostimulant is rich in nutrients, and is applied to pet staple food or pet snacks or anthony pig and chicken feed as an additive.

Description

technical field

[0001] The invention relates to a treatment method for heparin wastewater, in particular to a method for preparing a nutrient attractant by using heparin wastewater. Background technique

[0002] At present, heparin is mainly produced by enzymatic hydrolysis in industry. The raw material is pig small intestinal mucosa. The production process is as follows: fresh pig small intestinal mucosa is added with protease. Decompose for 2 to 4 hours, inactivate the enzyme, and filter with an 80-mesh sieve to obtain the filtrate. The filtrate is added with macroporous cationic adsorption resin to absorb heparin, and then filtered, eluted, alcohol precipitated and dried to obtain crude heparin.

[0003] In the process of extracting heparin by enzymatic hydrolysis, a large amount of wastewater is generated at three process nodes: 1. Adsorption wastewater is generated after resin adsorption; 2. Elution wastewater is generated after resin elution; 3. Heparin is precipitate...

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