| Probiotics are kinds of "active microorganisms" that can have beneficial effects on the health of the animal body through colonized into the host, and they are important participant in the host metabolism. High density fermentation has become one of the most important means to increase the number of probiotic bacteria, among them fermentation technology plays a key role in the process of high density fermentation. In the market of feed additives, probiotics preparation are in urgent need of a production method with low production cost and simple milling. In this paper, the categories, functions, exploration of high-density fermentation conditions as well as preparationization of probiotics, and the existed research results were summarized aiming at providing valuable references for probiotics production, the prospect of the field in the years to come were also outlooked. |
