Yeast culture taking yellow wine vinasse as base material and preparation method of yeast culture

Abstract

The invention relates to a yeast culture taking yellow wine vinasse as a base material and a preparation method of the yeast culture. The yeast culture takes the yellow wine vinasse as the base material; the yeast culture is subjected to high-density fermentation by saccharomycetes to obtain yeast high-density fermented yellow wine vinasse; a self solvent is added to be uniformly mixed; water is added to adjust the humidity, and the heat preservation culture and the drying are carried out to process a finished product; the content of amino-state nitrogen of the yeast culture is 1.5%-3%. The preparation method comprises the following steps: preparing the yeast high-density fermented yellow wine vinasse; adjusting the pH value of the yellow wine vinasse; adding the self solvent of the yeast; adjusting the humidity; carrying out heat-preservation culturing; and finally, drying and crushing to process a finished product. The yeast culture has the main advantages that the wastes of the yellow wine vinasse are changed into valuable things; the contents of the amino-state nitrogen, saccharides and protein are high; a large quantities of enzymes, vitamins and nutritional factors are contained; the protein is degraded into polypeptides and a very small quantity of amino acids so that the bioavailability is high; anti-nutritional factors and plant allergens in the yellow wine vinasse are degraded; furthermore, the raw material cost is low, the process is simple, the operation is easy, the quality is stable, and the environment friendliness and no environmental pollution are realized in the production process.

Description

technical field [0001] The invention relates to a yeast culture with rice distiller's grains as a substrate and a preparation method thereof, belonging to the technical field of yeast solid-state fermentation. Background technique [0002] Due to the good feeding value of yeast culture, it has been paid more and more attention by the breeding industry at home and abroad in recent years. Many foreign products have entered China, such as Yikang XP of Danongwei Company of the United States, etc., but the price is very expensive, and the market price is higher than 12,000 yuan / ton. China's largest yeast manufacturer — Angel Yeast Co., Ltd. has launched brewer's yeast self-dissolving powder products for livestock and poultry breeding in 2009, and the price is as high as 35,000 yuan / ton. Hubei Gaosheng Biological Feed Co., Ltd. cooperates with Huazhong Agricultural University Academy of Sciences to produce yeast culture products using distiller's grains as a substrate. The patent...

AI Technical Summary

Problems solved by technology

At present, the utilization rate of rice distiller's grains is not high. Some of the fresh distiller's grains are directly used as feed for livestock and poultry. Most of them rot and deteriorate because they cannot be preserved, becoming a kind of solid waste and polluting the surrounding environment.