Abstract Antioxidative activity of epigallocatechin gallate (EGCG) was examined. Effect of EGCG at various concentrations (0–0.20%, w/v) on the properties of fish gelatin-based films was also investigated. EGCG showed 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities, ferric reducing antioxidant power (FRAP), hydrogen peroxide scavenging activity and oxygen radical absorbance capacity (ORAC) of 12.78, 7.68, 11.02, 3.59 and 2.92 mmol Trolox equivalent (TE)/g sample, respectively. Films containing 0.15 and 0.20% EGCG exhibited higher tensile strength (TS) and water vapor permeability (WVP) but lower elongation at break (EAB) and light transmission, compared with the control film (P

中文翻译：

---

表没食子儿茶素没食子酸酯掺入鱼明胶基薄膜的性质和抗氧化活性

摘要 检测了表没食子儿茶素没食子酸酯 (EGCG) 的抗氧化活性。还研究了不同浓度（0-0.20%，w/v）的 EGCG 对鱼明胶基薄膜性能的影响。EGCG 表现出 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) 和 2,2-diphenyl-1-picrylhydrazyl (DPPH) 自由基清除活性、铁还原抗氧化能力 (FRAP)、过氧化氢清除活性和氧自由基吸收能力 (ORAC) 分别为 12.78、7.68、11.02、3.59 和 2.92 mmol Trolox 当量 (TE)/g 样品。与对照薄膜相比，含有 0.15% 和 0.20% EGCG 的薄膜表现出更高的拉伸强度 (TS) 和水蒸气渗透率 (WVP)，但断裂伸长率 (EAB) 和透光率较低 (P