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【目的】通过制备一种含纳米Ag、纳米TiO2和凹凸棒土的纳米包装聚乙烯(PE)包装薄膜,研究双孢蘑菇在4℃下贮藏10 d期间,纳米包装材料对其感官品质、生理指标和营养指标变化的影响。【方法】跟踪检测贮藏过程中双孢蘑菇的失重率、白度、相对电导率、多酚氧化酶活性、丙二醛、总糖和可溶性蛋白含量等指标的变化,分析纳米包装材料和普通聚乙烯材料对双孢蘑菇感官品质、生理指标和营养指标的影响。【结果】与普通聚乙烯包装材料相比,添加纳米粒子的包装材料能够较好地抑制双孢蘑菇发生失水萎蔫和褐变现象,使其保持贮藏前洁白色的感官品质。贮藏10 d后,纳米包装材料处理组双孢蘑菇的失重率、相对电导率、丙二醛含量和多酚氧化酶活性分别为1.46%、22.5%、3.50μmol.kg-1、161.89 U.g-1.min-1,显著低于对照处理组的1.86%、30.2%、4.66μmol.kg-1和233.84 U.g-1.min-1,(P<0.05),而总糖和可溶性蛋白等营养成分的保留量均显著高于对照组的含量。【结论】纳米包装材料能够有效抑制贮藏期间双孢蘑菇感官品质的劣变,降低营养价值的损失,提高综合贮藏品质,延长贮藏时间。
【Objective】 The objective of this study was to investigate the effect of nano-packaging materials on the sensory quality, physiology, and biodegradability of Agaricus bisporus during storage for 10 days at 4 ℃ by preparing a nano-packaging PE film containing nano-Ag, nano-TiO2 and attapulgite. The impact of changes in indicators and nutritional indicators. 【Method】 The changes of weight loss rate, whiteness, relative conductivity, polyphenol oxidase activity, malondialdehyde, total sugar and soluble protein content of Agaricus bisporus during storage were followed up and analyzed. The effects of nano-packaging materials and common poly Influences of Ethylene Material on Sensory Quality, Physiological and Nutritional Indexes of Agaricus bisporus. 【Result】 Compared with ordinary polyethylene packaging materials, the packaging materials with nano-particles could inhibit the water loss wilting and browning of Agaricus bisporus and keep the white sensory quality before storage. After 10 days of storage, the weight loss rate, relative conductivity, malondialdehyde content and polyphenol oxidase activity of Agaricus bisporus were 1.46%, 22.5%, 3.50μmol.kg-1,161.89 Ug-1 .min-1, which was significantly lower than that of the control group (1.86%, 30.2%, 4.66μmol.kg-1 and 233.84g ug-1.min-1, respectively Retention were significantly higher than the control group content. 【Conclusion】 Nano-packaging materials can effectively inhibit the deterioration of sensory quality of Agaricus bisporus during storage, reduce the loss of nutritional value, improve the integrated storage quality and prolong the storage time.