紫外线辐照结合壳聚糖涂膜对哈密瓜贮藏品质的影响  

Effect of Ultraviolet Irradiation Combined with Chitosan Coating on Storage Quality of Hami Melon

作　　者：宋昕昕 吕云皓 王雨菲 陈国刚[1] 祝建波[2] 江英[1] SONG Xinxin;LU Yunhao;WANG Yufei;CHEN Guogang;ZHU Jianbo;JIANG Ying(School of Food Science and Technology,Shihezi University,Shihezi 832003,China;College of Life Sciences,Shihezi University,Shihezi 832000,China)

机构地区：[1]石河子大学食品学院,新疆石河子832003 [2]石河子大学生命科学学院,新疆石河子832000

出　　处：《食品科学》2023年第13期159-165,共7页Food Science

基　　金：新疆生产建设兵团重点领域项目(2020AB009)。

摘　　要：为研究短波紫外线(ultraviolet-C,UV-C)辐照结合壳聚糖(chitosan,CH)涂膜处理对哈密瓜果实采后贮藏品质的影响,以新疆‘西州密17号’哈密瓜为原料,采用UV-C辐照和CH涂膜进行处理,分析果实在(5±1)℃贮藏期间生理品质和抗氧化酶活力的变化规律。结果表明,UV-C和CH处理均能有效延缓哈密瓜果实贮藏品质的变化,其中UV-C+CH处理保鲜效果最佳,在贮藏第49天,UV-C+CH组的果实硬度是对照组的1.13倍,可溶性固形物与可滴定酸质量分数分别是对照组的1.14、1.35倍,抗坏血酸和总酚含量分别比对照组高23.40%和32.51%,超氧化物歧化酶、过氧化氢酶、抗坏血酸过氧化物酶和过氧化物酶活力与对照组相比分别提高了12.70%、73.53%、26.43%和28.14%。综上所述,UV-C+CH处理可以有效维持哈密瓜果实采后的贮藏品质,该研究可为哈密瓜采后保鲜提供一定的参考依据。In order to investigate the effect of ultraviolet-C(UV-C)irradiation combined with chitosan(CH)coating on the storage quality of Hami melon,changes in the physiological quality and antioxidant enzyme activities of‘Xizhoumi 17’Hami melon from Xinjiang were determined during storage at(5±1)℃ after the combined treatment.The results indicated that both single and combined treatments effectively delayed the changes in the storage quality of Hami melon,with the combined treatment being most effective.On the 49th day of storage,the fruit firmness of the combined group was 1.13 times higher,and the contents of soluble solids and titratable acids were 1.14 and 1.35 times higher than those of the control group,respectively;the contents of ascorbic acid and total phenols increased by 23.40% and 32.51%,respectively,and the activities of superoxide dismutase(SOD),catalase(CAT),ascorbate peroxidase(APX)and peroxidase(POD)by 12.70%,73.53%,26.43% and 28.14%,respectively.In conclusion,UV-C combined with CH coating can effectively maintain the postharvest storage quality of Hami melon.This study can provide a reference for the postharvest preservation of Hami melon.

关 键 词：哈密瓜 紫外线辐照 壳聚糖涂膜 保鲜 贮藏品质 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]