关键词: 后生元；分类；鉴定；乳制品；应用优势

Abstract: Postbiotics are a new means of intervention in the intestinal ecosystem that has emerged in recent years. Postbiotics refer to soluble factors (products or metabolic by-products) secreted by living bacteria or released after bacterial lysis, namely small molecules that regulate the health of the host, such as enzymes, peptides, teichoic acid, peptides derived from peptidoglycan, polysaccharides, cell surface proteins, and organic acids. Although the International Symposium of the International Scientific Association for Probiotics and Prebiotics has not yet published a consensus on postbiotics, this concept closely related to probiotics still attracts people’s attention. This paper briefly clarifies the classification and preparation methods of postbiotics, and discusses the advantages and potential application of postbiotics as functional ingredients in dairy products.

Key words: postbiotics; classification; identification; dairy products; advantages