Microbial solid fermentation technology for plant protein feed

In recent years, with the continuous improvement of people's living standards and the improvement of quality of life, people's meat, eggs, milk quality requirements are increasing day by day, the demand for rapid increase, so that the demand for livestock and poultry feed is also increasingIn 2009, China's total feed volume of about 150 million tons, animal husbandry in agricultural production and national economy is playing an increasingly important roleAt present, the protein raw materials in feed production in China are mainly: fishmeal, meat bone meal and soybean meal, their protein content is about 65 percent, 53 percent and 44 percent, respectively, but the demand for fishmeal, meat bone meal, soybeans long-term dependence on the international market, insufficient domestic production and supply, the shortage of global resources, resulting in rising feed raw materials prices, feed costs, has become an important factor restricting the development of China's animal husbandryAnd rapeseed cake meal, cotton seed cake, vinegar and other industrial and agricultural by-products, high protein content, is very good plant protein feed, but because it contains anti-nutrition factors, poor amino acid balance, low protein utilization and other factors, restricting its application in the aquaculture industryUsing microbial solid fermentation technology to treat these plant-based protein feeds, making them the source of animal feed protein, can not only promote the development of animal husbandry in China, but also improve the agricultural ecological environment, realize the full utilization of resources, alleviate the situation of protein feed resources in China, the role of peptides in animal nutritionclassical nutrition that protein can only be hydrolyzeized as amino acids can be absorbed by the human body or animals, it was later found that protein degradation products in the digestive tract are mostly small molecule peptides, they are absorbed into the circulation system in a complete form and are used by tissues; The study also found that peptides have the properties of binding to metals to promote the passive transport process of calcium, copper, zinc, iron, etcand storage in the body, can promote the absorption and utilization of mineral elementsOf particular concern is that some peptides also have obvious physiological activity in animals, such as improving immunity, regulating the physiological domestic and antibacterial antioxidant and blood pressure, blood lipids and so onThe development of peptide feed has attracted great attention, solid fermentation production feed technologyplant protein microbial solid fermentation technology is the use of microorganisms in the plant protein feed raw materials growth and metabolism accumulation of useful bacteria, enzymes and intermediate metabolites, processing into livestock and poultry easy to absorb plant protein raw materials technologyBecause of the low water content of the fermentation matrix used, the volume of bioreactors can be greatly reduced, the equipment and technology is simple, the investment is low, the waste water is not required, and the environmental pollution is lessAt the same time, solid fermentation of plant protein raw materials, because complex macromolecular substances are digested by microorganisms and decomposed into small molecular substances (such as various sugars), anti-nutritional factors are removed, while increasing the animal's easy absorption of proteins, peptides, amino acids, B vitamins, trace elements, active enzymes, antibiotics, organic acids, alcohols and various flavor substances, so that these raw materials are more conducive to the growth and development of animals and the use of intestinal absorptionThe production of fermented plant protein is an industry with great comprehensive benefits and broad prospects for development, domestic solid fermentation production feed technology development overviewsolid state fermentation (SSF) has a long history, as early as 2500 years ago there was a solid fermentation production of Chinese medicine Broadly speaking, it refers to a process that uses insoluble solid matrix to culture microorganisms, including deep fermentation of solids suspended in liquids, and processes that grow microorganisms on wet solid materials without (or with little or no free water) In most cases, a biological reaction process fermented with one or more microorganisms in water insoluble solid matrix with or without or without free water At present, the production of plant protein feed in China uses solid fermentation methods, such as Wang Xinghua and other use of corn flour microbial solid fermentation to produce feed, Zhang Ji to vegetable waste solid fermentation production protein feed, Zhao Jianguo to tropical fake silk yeast solid fermentation yellow wine production protein feed Since 2002, Wu Qifei and others have carried out the design and development of solid fermentation protein feed production line, carried out a series of feed solid fermentation technology and equipment research work, especially in recent years, focusing on the study of the pie mixed solid fermentation preparation protein peptide feed technology, did a lot of basic research work In particular, they innovatively applied ultrasonic technology to the mixed liquid seeding process, greatly improving the growth performance and enzyme vitality of the bacteria, and improving production efficiency Ultrasonic auxiliary seeding technology refers to the use of low-power ultrasonic to promote the growth of microbial strains, increase their cell membrane permeability to promote the secretion of various enzymes, so that the species culture liquid in the follow-up solid fermentation process to play a greater effect At present, the solid fermentation technology of plant protein has been paid more and more attention by researchers and enterprises in the agricultural processing industry Learn more You can follow microbial fermentation technology to read: