Analysis of Probiotic Survival Characteristics and Nutritional Quality Changes in Fermented Dairy Products
发酵乳制品中益生菌存活特性及营养品质变化分析

摘要

发酵乳既是益生菌的重要载体，也是乳源营养物质转化形成活性肽、有机酸和风味物质的复杂体系。 本文依据公开研究数据，分析益生菌在发酵及冷藏期间的增殖、衰减和菌种互作特征，并讨论糖、酸、蛋白质、 活性代谢物及质构品质的变化。研究表明，益生菌存活具有明显的菌株和基质依赖性，适宜复配菌种、益生 元及稳定冷链可缓解后酸化，提高活菌稳定性和综合营养品质。

Abstract

Fermented dairy products serve not only as important carriers of probiotics but also as complex systems in which milk-derived nutrients are transformed into bioactive peptides, organic acids, and flavor compounds. Based on publicly available research data, this study analyzes the proliferation, decline, and strain interactions of probiotics during fermentation and refrigerated storage, and discusses changes in sugars, acids, proteins, bioactive metabolites, and textural quality. The results indicate that probiotic survival is strongly dependent on strain characteristics and the food matrix. Appropriate combinations of starter cultures, prebiotics, and a stable cold chain can alleviate post acidification, improve viable probiotic stability, and enhance overall nutritional quality.