【摘要】 目的 研究气调保鲜盒对莲子贮藏期品质变化的影响。方法 以新鲜莲子为样品,采用覆膜20%的气调保鲜盒处理(T1),以及覆膜20%的气调保鲜盒加1-甲基环丙烯共处理(T2),并以普通保鲜盒作为参照对比(CK),测定其外观及营养品质。结果 相比于CK,T1和T2处理均可显著降低莲子的失重率和褐变度,维持维生素C、直链淀粉、总酚、可溶性固形物等营养物质的含量,在莲子常温贮藏7d条件下, CK失重为16.4%, T1失重为3.4%, T2失重为4.0%。CK、T1和T2总酚含量分别为5.453、9.210、10.916mg/g;T1和T2组维生素C含量分别比对照组高0.41mg/100g和0.84mg/100g,直链淀粉含量分别比对照组高0.856 mg/g、1.438 mg/g。结论 T1和T2处理对减少莲子采后营养物质消耗和维护色泽等方面具有良好效果,T2处理相较于T1处理的效果更明显。本研究为新鲜莲子采后保鲜技术的优化提供了实践依据。更多还原

【Abstract】 Objective To study the effects of modified atmosphere packaging on the quality changes of lotus seeds during storage. Methods Fresh lotus seeds were used as the test material, and the appearance and nutritional quality of the lotus seeds were treated with a film-covered 20% modified atmosphere packaging(T1), and a film-covered 20% modified atmosphere packaging with 1-methylcyclopropene(T2), with a regular preservation box used as the control(CK). Results The results showed that compared to CK, both T1 and T2 treatments significantly reduced the weight loss and browning of lotus seeds, and maintained the content of nutrients such as vitamin C,amylose, total phenols and soluble solids. Under the condition of 7 days of room temperature storage, the weight loss of CK was 16.4%, T1 was 3.4%, and T2 was 4.0%. The total phenol content of CK, T1 and T2 was 5.453, 9.210 and 10.916 mg/g, respectively. The vitamin C content in T1 and T2 was 0.41 mg/100 g and 0.84 mg/100 g higher than that of the control group, and the amylose content was 0.856 mg/g and 1.438 mg/g higher than that of the control group.Conclusion The results of the study indicate that the T1 and T2 treatments have a good effect in reducing the post-harvest nutrient consumption of lotus seeds and maintaining their color, with T2 treatment showing a more significant effect compared to T1 treatment. This research provides practical evidence for the optimization of post-harvest preservation techniques for fresh lotus seeds.更多还原