Preparation method of laver oligosaccharide and application of laver oligosaccharide in fish feed

Abstract

The invention provides a preparation method of laver oligosaccharide and application of the laver oligosaccharide in fish feed. The laver oligosaccharide is prepared from through a biochemical synergistic efficient catalysis method, the method is simple to operate and high in yield, and sulfate groups in sugar chains are reserved to the maximum extent. The laver oligosaccharide is mainly formed by connecting 3-connected beta-D-galactose and 4-connected alpha-L-galactose-6-sulfo group, the degree of polymerization is 2 to 20, the content of galactose is 60 to 80 percent, and the content of sulfo group is 15 to 30 percent. The laver oligosaccharide is added into the fish feed, so that the meat quality of cultured fishes can be improved, the fat content of fish bodies is reduced, the protein content of the fish bodies is increased, and the meat quality and flavor of the fish bodies are improved. The laver oligosaccharide is a brand-new, green and safe fish feed additive, can effectively solve the problems of loose meat quality, low protein content and poor taste of cultured fishes, can improve the immunity of the fishes, and can broaden the market for the cultured fishes.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a preparation method of laver oligosaccharide and its application in fish feed. Background technique [0002] With the development of the aquaculture industry, the problems restricting the production of aquaculture have become increasingly prominent. One of the current problems that seriously affects the sales of farmed fish is that the flavor of farmed fish is poor. Severe fishy smell, loose meat quality, and high fat content all make consumers stay away. The lower quality of farmed fish has seriously affected its commercial value and development. The poor meat quality of farmed fish is directly related to the harsh farming environment and low-quality feed. The polluted water environment will inevitably lead to the accumulation of fish diseases and fishy smell substances, while the ordinary formula feed has high energy, resulting in high body fat and low lean meat percentage of fish...

AI Technical Summary

Problems solved by technology

Hydrogen peroxide degradation has the best prospect in the chemical degradation method. This method is low in cost and easy to realize industrial production. However, the oxidizing agent does not fully participate in the reaction process. At the same time, the product is more prone to browning as the temperature rises; The reaction can effectively avoid side effects, and the external reaction conditions are also easy to control, but the use of enzyme reactions leads to increased costs; the degradation reaction by physical methods is not complete

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