果胶-鱼明胶-白藜芦醇保鲜薄膜的制备与性能评价。
Fabrication and performance evaluation of pectin-fish gelatin-resveratrol preservative films.
机构信息
State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China.
State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China; Engineering Research Center for Freshwater Fish High-value Utilization of Jiangxi, Jiangxi Normal University, Nanchang 330022, China.
出版信息
Food Chem. 2021 Nov 1;361:129832. doi: 10.1016/j.foodchem.2021.129832. Epub 2021 Apr 20.
Resveratrol-loaded fish gelatin (FG)-low methoxyl pectin (LMP) composite films with different FG:LMP mass ratios were prepared and evaluated as food packaging materials. With increasing FG contents, the water solubility of the films decreased. Moreover, the UV (315-400 nm) blocking efficiency and opacity increased with increasing LMP contents. The elongation of the films at breaking and tensile strengths were adjusted using the ratio of FG and LMP. The lowest water vapour permeability was observed at an FG:LMP mass ratio of 2:1. All films exhibited good antioxidant properties and significantly delayed oil deterioration when used for beef tallow preservation. The release behaviour of resveratrol in 95% ethanol as a food simulant was determined by film composition. The fabricated films exhibit significant potential for beef tallow preservation applications. Furthermore, LMP can improve the stability of resveratrol-FG complexes and compete with resveratrol for binding FG to accelerate resveratrol release.
负载白藜芦醇的鱼明胶（FG）-低甲氧基果胶（LMP）复合膜，其 FG：LMP 的质量比不同，被制备并评估为食品包装材料。随着 FG 含量的增加，薄膜的水溶性降低。此外，随着 LMP 含量的增加，UV（315-400nm）阻隔效率和不透明度增加。通过 FG 和 LMP 的比例调整薄膜的断裂伸长率和拉伸强度。在 FG：LMP 质量比为 2：1 时，水蒸气透过率最低。所有薄膜均表现出良好的抗氧化性能，在用于牛脂保存时，可显著延缓油的劣化。通过膜组成确定了在 95%乙醇作为食品模拟物中的白藜芦醇释放行为。所制备的薄膜在牛脂保存应用中具有很大的潜力。此外，LMP 可以提高白藜芦醇-FG 配合物的稳定性，并与白藜芦醇竞争结合 FG 以加速白藜芦醇的释放。
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