Probiotics added to food come from many sources. In the early days, probiotics were imported from abroad. At present, with the development of domestic micro-ecological technology, there is also the research and development and production capacity of food additive probiotics in China. Food raw materials must choose probiotics (inactivated probiotics). Because the processing technology of various foods and beverages is different, many of them need high-temperature processing technology. Ordinary active probiotics are easily killed, so probiotics lose their value. Probiotic raw materials added to inactivated probiotic food can achieve the characteristics of high temperature resistance and gastric acid resistance. This is also a post-biotechnology. At present, the metamaterial technology in China includes the technology of inactivating probiotics by Hexi metamaterial. For the explanation of metazoa, please refer to Baidu Encyclopedia: Metazoa.

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Refer to Zhihu: Network Link.