Gelatin was extracted from carp skin and reticulated with gallic acid; afterward, gelatin samples were crosslinked with addition of chitosan produced from shrimp waste and, bleached oil and free fatty acids (FFA) extracted from tuna heads. Carp gelatin showed good yield (20.4%), hydroxyproline content of 13.8% and high gel strength (245 g). Chitosan presented 85%DD and MW of 159 kDa, and the tuna oil had 68.2% of unsaturated fatty acids, being around 29% of EPA and DHA. Films showed thickness, color, and transparencies characteristic of fish gelatins. Films crosslinked with gallic acid, incorporated with chitosan and the tuna lipid fractions showed better mechanical and permeation properties that the other films. FT-IR analysis showed that crosslinking let to an amides II and III decrease, a typical attribute in films with low water vapor permeability. All films presented higher melting temperatures than the pure gelatin film, indicating less thermal degradation and better quality. The results expressed that the incorporations of chitosan, bleached oil and FFA improved the properties of crosslinked gelatin films from carp skin. As all materials used in work are byproducts from fishery industry, this fact could collaborate to reduce the environmental impacts caused by their inadequate discards in nature.

从鲤鱼皮中提取明胶并用没食子酸成网状；之后，将明胶样品与虾粪产生的脱乙酰壳多糖以及从金枪鱼头中提取的漂白油和游离脂肪酸（FFA）交联。鲤鱼明胶显示良好的收率（20.4％），羟脯氨酸含量为13.8％和高凝胶强度（245 g）。壳聚糖的DD和MW为159 kDa的为85％，金枪鱼油具有68.2％的不饱和脂肪酸，约为EPA和DHA的29％。薄膜显示出鱼明胶的厚度，颜色和透明度。与没食子酸交联的薄膜，壳聚糖和金枪鱼脂质组分的结合表现出比其他薄膜更好的机械性能和渗透性能。FT-IR分析表明，与酰胺II和III的交联减少，低水蒸气渗透性的薄膜的典型特征。与纯明胶薄膜相比，所有薄膜均具有更高的熔融温度，这表明热降解更少，质量更高。结果表明，壳聚糖，漂白油和FFA的掺入改善了鲤鱼皮交联明胶薄膜的性能。由于工作中使用的所有材料都是渔业的副产品，因此，这一事实可以相互合作，以减少因自然界中丢弃物不足而造成的环境影响。