Technology with high utilization rate for extracting agar from gracilaria seaweed

Abstract

The invention discloses a technology with high utilization rate for extracting agar from gracilaria seaweed. Seaweed bodies are pretreated with a low-alkali high-temperature method, consumption of alkali is reduced, and product strength is improved; gel extraction is performed with a high-temperature pressurization method, and the gel output rate is effectively increased; the production cycle canbe shortened; a multi-stage vibrating screen filtration technology is developed, the seaweed with gel incompletely output is filtered and returned to secondary gel extraction, waste is reduced, and the gel extraction rate is increased; meanwhile, residues are modified and processed to form fertilizer and feed additives, so that the comprehensive utilization rate of raw materials is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of production technology for extracting agar products with high utilization rate of Gracilaria seaweed, in particular to a production technology for agar, and in particular to a production technology technology for extracting agar products with high utilization rate of Gracilaria seaweed. Background technique [0002] Agar, scientific name agar, also known as agar, frozen powder, agar, etc., is a polysaccharide colloid extracted from red algae, a marine resource, and is widely used in biotechnology, medicine, food, daily chemicals and other industries. The use of agar in food can significantly change the quality of food and improve the grade of food. It is characterized by physical and chemical properties such as coagulation, stability, and the ability to form complexes with some substances, and can be used as thickeners, coagulants, suspending agents, emulsifiers, preservatives and stabilizers. Agar can be...

AI Technical Summary

Problems solved by technology

At present, there are many manufacturers producing agar in China, and they generally use traditional processing methods. Most of them use the traditional process of soaking in alkali→bleaching→acidification→boiling gelatin to process. The strong alkali, strong acid and chloride ions that need to be used are serious. "Triple" pollution, high cost of sewage treatment, high environmental cost

At the same time, small workshops are produced on a large scale, and the production equipment is backward. For example, the conventional filter box and the traditional hot air drying system have problems such as large energy consumption, low production capacity, and low degree of integration.

Although the agar industry generally presents a situation of considerable profits and short supply, the development of my country's agar processing industry is restricted by various aspects such as backward production technology, serious environmental pollution discharge, and low comprehensive utilization rate.