Preparation method of chitosan microspheres for adsorbing shellfish toxins

Abstract

The invention relates to the field of food safety, in particular to a preparation method of chitosan microspheres for adsorbing shellfish toxins. The invention adopts the following technical scheme: the preparation method of chitosan microspheres for adsorbing shellfish toxins is characterized by comprising the following steps: first, gradually adding 120-160 parts by weight of acetic acid solution to 3-4 parts by weight of chitosan to ensure that the chitosan is dissolved in the acetic acid solution; then carrying out low-temperature refrigeration for 18-20 hours; then sucking chitosan into asyringe; then dropwise adding the chitosan in the syringe into coagulation liquid; after the chitosan is coagulated into spheres, repeatedly washing the spheres to be neutral by deionized water; andthen carrying out drying. The chitosan microspheres provided by the invention have the advantages of high adsorption efficiency and good adsorption effect.

Description

Technical field

[0001] The invention relates to the field of food safety, in particular to a preparation method of chitosan microspheres for adsorbing shellfish toxins. Background technique

[0002] Shellfish toxin is a marine natural organic matter, and its formation is closely related to the red tide of toxic algae in the ocean. Harmful red tides have become a worldwide problem, the scope of their occurrence is still expanding, and the types of harmful algae that can form red tides are also increasing. According to literature reports, there are about 184,267 species of microalgae that can form red tides, of which about 60-78 species of toxic microalgae. Toxins produced by toxic algae often enter the shellfish body through the food chain, so these toxins are usually called shellfish poison. People eat shellfish with shellfish poison and cause food poisoning. The pollution of shellfish toxins in the four sea areas of my country is very serious. The investigation found that ext...