Evaluation of the Nutritional Value and Safety of Natural Bioactive Components in Functional Foods
功能性食品中天然活性成分的营养价值与安全性评价

摘要

天然多酚、多糖、植物甾醇、类胡萝卜素及活性肽是功能性食品的重要物质基础，具有调节氧化应激、 脂质代谢和肠道环境等潜在价值。本文依据公开研究数据，分析其营养作用、生物可及性及剂量安全性。结 果表明，天然成分的功能效应受食品基质、加工方式、摄入剂量和人群特征共同影响；天然来源不等于绝对 安全。构建成分鉴定、暴露评估、毒理试验和人体研究相衔接的评价体系，是功能性食品科学开发的关键。 

Abstract

Natural polyphenols, polysaccharides, phytosterols, carotenoids, and bioactive peptides constitute important material bases of functional foods and have potential benefits in regulating oxidative stress, lipid metabolism, and the intestinal environment. Based on publicly available research data, this study analyzes their nutritional functions, bioaccessibility, and dose-related safety. The results indicate that the functional effects of natural components are jointly influenced by the food matrix, processing methods, intake levels, and population characteristics, and that natural origin does not necessarily imply absolute safety. Establishing an evaluation system that integrates component identification, exposure assessment, toxicological testing, and human studies is essential for the scientific development of functional foods.