应激特别是氧化应激损伤会导致机体免疫功能低下、肠道结构损伤和微生态失衡。茶类提取物中的儿茶素在抗氧化、清除自由基、抗过敏、抗菌消炎、增强免疫功能等方面均具有明显的效果。通过综述其在上述领域的研究进展，为减轻机体应激创伤寻求新的营养调控措施，为寻求抗生素的替代性产品提供参考。
Stress, especially oxidative stress injury can cause immune dysfunction, intestinal structural damage and micro-ecological imbalance. Catechin in the tea extracts had some effects on anti-oxidant, scavenging free radical, anti-anaphylaxis, antisepticize, dephlogisticate and enhancing immune function. Those biological roles were reviewed in this paper in order to provide some references for finding new nutritional regulation measures and seeking the antibiotic substitutes.［Chinese Journal of Animal Nutrition, 2011, 23（10）：1664 -1668］
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