添加多酚对鲤鱼肌原纤维蛋白结构及膜性能的影响 - 食品科学.pdfVIP

※基础研究 食品科学 2016, Vol.37, No.05 35 添加多酚对鲤鱼肌原纤维蛋白结构及 膜性能的影响 张慧芸，吴静娟，段 续 （河南科技大学食品与生物工程学院，河南洛阳 471023 ） 摘  要： 1% 2% 3% 4% 5% 研究不同添加量（ 、 、 、 、 ）多酚化合物（阿魏酸、鞣酸、迷迭香酸和丁香酸）对鲤鱼肌 原纤维蛋白结构和膜特性的影响。结果表明，与丁香酸、迷迭香酸和阿魏酸相比，添加鞣酸的蛋白成膜液中自由氨 P 0.05 基和巯基含量最低，表明鞣酸具有较高的蛋白交联能力（ ＜ ）。随着多酚添加量的增加，膜的弹性和拉伸强 P 0.05 度逐渐增强，断裂伸长率逐渐降低（ ＜ ），表明添加多酚化合物提高了膜的硬度和强度。在相同质量分数条 件下，添加鞣酸的鲤鱼肌原纤维蛋白膜具有最高的弹性和拉伸强度。添加多酚化合物有效降低了鲤鱼肌原纤维蛋白 膜的紫外和可见光透过率，降低程度取决于多酚的种类和浓度。添加多酚化合物的鲤鱼肌原纤维蛋白膜可用于高脂 食品的内包装，防止食品脂质氧化、延长货架期。 关键词：多酚；肌原纤维蛋白；结构；膜；性能 Effect of Polyphenolic Compounds on Protein Structure and Film Properties of Common Carp Myofibrillar Protein ZHANG Huiyun, WU Jingjuan, DUAN Xu (College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China) Abstract: The objective of this study was to investigate the effects of several polyphenolic compounds (ferullic acid, tannic acid, rosmarinic acid and syringic acid) at various concentrations (1%, 2%, 3%, 4% and 5% based on protein) on structure and properties of film from myofibrillar protein of common carp (Cyprinus carpio). Among all the investigated polyphenolic compounds, tannic acid showed the highest cross-linking capacity on myofibrillar protein as evidenced by in the lowest free amino group and sulfhydryl group contents in the film-forming protein solution. The addition of polyphenolic compounds could enhance mechanical properties of the resulting films. With increasing concentration of polyphenolic compounds added, Young’s modulus (E) and tensile s