Properties of gelatin film from horse mackerel (Trachurus japonicus) scale.
Properties of gelatin film from horse mackerel (Trachurus japonicus) scale.
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DOI：
10.1111/1750-3841.12806
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发表时间：
2015-04
影响因子：
3.9
通讯作者：
T. Le;Hiroki Maki;Kigen Takahashi;E. Okazaki;K. Osako
中科院分区：
文献类型：
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作者：
T. Le;Hiroki Maki;Kigen Takahashi;E. Okazaki;K. Osako
考察了从马鲛鱼鳞中提取明胶并制备明胶膜的最佳条件，如提取温度、提取时间、成膜液的蛋白浓度等。根据提取条件的不同，在70℃、80℃和90℃条件下提取15 min至3 h的明胶得率为1.08%至3.45%。在不同的提取时间和温度下，70℃提取1 h的明胶薄膜的抗拉强度和断裂伸长率最高。马鲛鱼鳞明胶薄膜的水蒸气渗透性（WVP）远低于哺乳动物或鱼类明胶薄膜，这可能是由于马鲛鱼鳞明胶的疏水氨基酸含量（每1000个残基中有653个残基）略高于哺乳动物、冷水鱼类和温水鱼类明胶。不同制备条件下的明胶薄膜在200 nm波段均表现出优异的紫外线阻隔性能，但在可见光波段均为透明。因此，在70℃下提取1 h的马鲛鱼鳞明胶膜具有最低的WVP值和优异的防紫外线性能，可以应用于食品包装材料。
Optimal conditions for extracting gelatin and preparing gelatin film from horse mackerel scale, such as extraction temperature and time, as well as the protein concentration of film-forming solutions were investigated. Yields of extracted gelatin at 70 °C, 80 °C, and 90 °C for 15 min to 3 h were 1.08% to 3.45%, depending on the extraction conditions. Among the various extraction times and temperatures, the film from gelatin extracted at 70 °C for 1 h showed the highest tensile strength and elongation at break. Horse mackerel scale gelatin film showed the greatly low water vapor permeability (WVP) compared with mammalian or fish gelatin films, maybe due to its containing a slightly higher level of hydrophobic amino acids (total 653 residues per 1000 residues) than that of mammalian, cold-water fish and warm-water fish gelatins. Gelatin films from different preparation conditions showed excellent UV barrier properties at wavelength of 200 nm, although the films were transparent at visible wavelength. As a consequence, it can be suggested that gelatin film from horse mackerel scale extracted at 70 °C for 1 h can be applied to food packaging material due to its lowest WVP value and excellent UV barrier properties.