A process for the clean production of chitin from waste biomass of shrimp and crab by solid-state fermentation with probiotics

Abstract

The invention discloses a process for performing clean production on chitin through solid fermentation and conversion of shrimp and crab abandoned biomass by utilizing a micro-ecological bacteria agent. The process comprises the following steps: adding a saccharic-enriched culture medium into shrimp and crab processing wastes, uniformly stirring and mixing, inoculating the micro-ecological bacteria agent for performing solid closed fermentation, performing solid-liquid separation on biomass after the fermentation is ended, thus obtaining residues and solution; adding a solid base into the solution, mixing, drying and forming a micro-ecological feed additive; and producing the chitin from the residues by employing the conventional acid-alkali method. The shrimp and crab abandoned biomass is converted through solid fermentation by utilizing the micro-ecological bacteria agent, so that the acid-alkali amount in the subsequent chitin production process can be reduced, and a clean chitin production process which is simple in process route, low in production cost and suitable for industrial production is formed; and moreover, the wastes can be changed into valuable materials, and a third generation micro-ecological feed additive with multiple nutritive values is developed.

Description

technical field [0001] The invention relates to chitin production technology, in particular to a process for cleanly producing chitin by solid-state fermentation conversion of waste biomass of shrimps and crabs using probiotics. Background technique [0002] Chitin is a natural polymeric polysaccharide that widely exists in the cell walls of fungi and algae, the shells of arthropods such as shrimps, crabs, and insects, and the cell walls of higher plants. It is the second largest biomass after cellulose resource. Chitin and its deacetylated derivative chitosan have excellent properties such as natural non-toxicity, good biocompatibility, and biodegradability, and have been widely used in the fields of food, medicine, chemical industry, and materials. [0003] At present, the main way to obtain chitin is to use aquatic product processing waste such as shrimp heads and shells, crabs or crab shells as raw materials, followed by multiple steps such as alkaline leaching to remov...

AI Technical Summary

Problems solved by technology

In summary, although some new processes and methods have been proposed in the field of chitin clean production technology from the perspective of reducing the amount of acid and alkali and recycling waste resources, there are still insufficient resource utilization and high recycling costs. , Insufficient process economy and other issues, there is still a long way to go before realizing the clean production of chitin