Fan HuiYin, Dumont Marie-Josée, Simpson Benjamin K
Department of Food Science and Agricultural Chemistry, McGill University (Macdonald Campus), 21,111 Lakeshore Rd., Ste. Anne de Bellevue, QC H9X 3V9 Canada.
Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah Malaysia.
J Food Sci Technol. 2017 Nov;54(12):4000-4008. doi: 10.1007/s13197-017-2864-5. Epub 2017 Sep 21.
Gelatin from salmon () skin with high molecular weight protein chains (-chains) was extracted using trypsin-aided process. Response surface methodology was used to optimise the extraction parameters. Yield, hydroxyproline content and protein electrophoretic profile via sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis of gelatin were used as responses in the optimization study. The optimum conditions were determined as: trypsin concentration at 1.49 U/g; extraction temperature at 45 °C; and extraction time at 6 h 16 min. This response surface optimized model was significant and produced an experimental value (202.04 ± 8.64%) in good agreement with the predicted value (204.19%). Twofold higher yields of gelatin with high molecular weight protein chains were achieved in the optimized process with trypsin treatment when compared to the process without trypsin.
采用胰蛋白酶辅助法从三文鱼皮中提取具有高分子量蛋白质链(-链)的明胶。运用响应面法优化提取参数。在优化研究中,将明胶的产率、羟脯氨酸含量以及通过十二烷基硫酸钠-聚丙烯酰胺凝胶电泳分析得到的蛋白质电泳图谱用作响应指标。确定的最佳条件为:胰蛋白酶浓度为1.49 U/g;提取温度为45℃;提取时间为6小时16分钟。该响应面优化模型具有显著性,实验值(202.04±8.64%)与预测值(204.19%)吻合良好。与未使用胰蛋白酶的工艺相比,在优化后的胰蛋白酶处理工艺中,具有高分子量蛋白质链的明胶产量提高了两倍。