Pouralkhas Mohsen, Kordjazi Moazemeh, Ojagh Seyed Mahdi, Farsani Omid Asadi
Department of Fisheries, Faculty of Fisheries and the Environment Gorgan University of Agricultural Sciences and Natural Resources Gorgan Iran.
Food Sci Nutr. 2023 May 3;11(7):4124-4135. doi: 10.1002/fsn3.3402. eCollection 2023 Jul.
Biodegradable films were created with fish gelatin and fucoidan extracted from using 30% glycerol as a plasticizer. The gelatin films were incorporated with fucoidan (2.5%, 5%, 7.5%, and 10%), respectively. Results presented that the average thickness of films ranged from 0.12 to 0.147 mm. Tensile strength (TS) was decreased from 29.27 to 3.46 MPa by adding the fucoidan except for the gelatin/fucoidan 10% (5.35 MPa) sample. The results showed that the physical characteristics (the contact angle (Ɵ), water solubility, opacity, and moisture content) of the films significantly changed depending on different fucoidan concentrations. FTIR and SEM analysis confirmed the interaction of fucoidan with gelatin in the composite film. Furthermore, adding 10% fucoidan showed high DPPH radical scavenging activity (65%) than other treatments. Therefore, incorporation of fucoidan extracted from brown algae () with fish gelatin films improved thermal stability, anti-oxidative, and antibacterial characteristics in addition to enhanced mechanical and protective properties, to be used as a bioactive edible film in the food packaging industry.
采用30%甘油作为增塑剂，用从[未提及具体来源]中提取的鱼明胶和岩藻依聚糖制备了可生物降解薄膜。明胶薄膜分别与2.5%、5%、7.5%和10%的岩藻依聚糖混合。结果表明，薄膜的平均厚度在0.12至0.147毫米之间。除了10%岩藻依聚糖（5.35兆帕）的明胶/岩藻依聚糖样品外，添加岩藻依聚糖后拉伸强度（TS）从29.27兆帕降至3.46兆帕。结果表明，薄膜的物理特性（接触角（Ɵ）、水溶性、不透明度和水分含量）因岩藻依聚糖浓度不同而显著变化。傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）分析证实了复合薄膜中岩藻依聚糖与明胶的相互作用。此外，添加10%岩藻依聚糖的样品显示出比其他处理更高的二苯基苦味酰基自由基（DPPH）清除活性（65%）。因此，将从褐藻（[未提及具体褐藻种类]）中提取的岩藻依聚糖与鱼明胶薄膜相结合，除了增强机械性能和保护性能外，还改善了热稳定性、抗氧化和抗菌特性，可作为食品包装行业中的生物活性可食用薄膜。
