Selenium-rich yeast powder, preparation method and application thereof

The invention relates to the technical field of selenium-rich yeast, in particular to selenium-rich yeast powder, a preparation method and application thereof. The preparation method of the selenium-rich yeast powder comprises the following steps: (1) adding kelp hydrolysate into a liquid culture medium to prepare a fermentation culture solution; (2) inoculating a selenium-rich yeast strain into the fermentation culture solution according to a ratio of 1-10%, and culturing for 12-36 hours to obtain a selenium-rich yeast solution; and (3) carrying out spray drying to obtain the selenium-rich yeast powder. According to the method, a kelp hydrolysate is added into a liquid culture medium, polysaccharide and other substances in the kelp hydrolysate can cooperate with selenium yeast to improve the immunity of animal bodies, and the production performance is improved. 本发明涉及富硒酵母的技术领域，特别是一种富硒酵母粉及其制备方法和应用，富硒酵母粉的制备方法包括如下步骤：(1)在液体培养基中添加海带水解液配置成发酵培养液；(2)将富硒酵母菌株按照1％-10％接种于发酵培养液中，培养12-36h，得到富硒酵母菌液；(3)喷雾干燥得到富硒酵母粉。本发明方法在液体培养