Gracilaria slag fermented active feed and preparation method thereof

Abstract

The invention provides a gracilaria slag fermented active feed and a preparation method thereof. The preparation technology comprises preparation of compound microorganisms and solid fermentation process of gracilaria slag. The preparation method mainly comprises the following steps: firstly preparing a microbial strain through liquid fermentation; then inoculating the microbial strain into a gracilaria slag solid matrix and fermenting by an aerobic fermentation process; and finally drying and crushing after fermentation so as to obtain the gracilaria slag fermented active feed. The gracilaria slag fermented active feed of the invention contains rich polysaccharide, protein, lactic acid, protease and activated probiotics, etc. When used for livestock and poultry, the feed of the invention has remarkable effects of promoting animal growth, improving microflora balance in animal body, reducing diarrhoea and discharge and the like, and also has a positive effect of reducing use of antibiotic and discharge of organic waste. The invention is beneficial to development and utilization of gracilaria seaweed processing leftover so as to effectively avoid potential environmental pollution and is also conducive to raise products added-value of seaweed industrial wastes so as to enhance utilization rate of the seaweed industrial wastes.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a gracilaria slag fermentation active feed and a preparation method thereof. Background technique [0002] my country is the country with the largest production of seaweed in the world. Gracilaria is one of the important large-scale economic seaweeds. Because of its large size, strong adaptability and fast growth, it is the main raw material for extracting agar at present. Gracilaria is mainly composed of polysaccharides and crude fiber, as well as a considerable amount of protein and fat, and is rich in minerals and vitamins. Gracilaria slag is the residual waste after extraction of agar, mainly crude fiber, and contains a certain amount of protein and residual agar, which is a relatively rich nutrient matrix. It is estimated that producing 1 ton of agar will produce about 2.5 tons of waste residue (dry basis), and the annual output of agar in Fujian Province is about 4...

AI Technical Summary

Problems solved by technology

[0003] At present, the utilization of Gracilaria residue is mainly focused on modifying it by chemical method or enzymatic method to prepare dietary fiber and carboxymethyl cellulose, but there is no relevant report on the research on the development and application of microbial fermentation technology of Gracilaria residue. The main reason is that the crude cellulose and residual agar are difficult to degrade, and the protein molecular weight is relatively large, so it is difficult for Gracilaria residue to be directly and effectively utilized by livestock and poultry.