近冰温贮藏对西梅的采后品质及活性氧代谢的影响  

Effects of near-freezing temperature storage on postharvest quality and reactive oxygen species metabolism of prunes

作　　者：文钰 杨莉玲[2] 刘岚 哦哈尔·帕孜力江 张昱 马文强[2] 杨晗 丁高鹏 崔宽波[2] WEN Yu;YANG Liling;LIU Lan;Ohaer·Pazilijiang;ZHANG Yu;MA Wenqiang;YANG Han;DING Gaopeng;CUI Kuanbo(School of Food Science and Pharmacy,Xinjiang Agricultural University,Urumqi 830052,China;Agricultural Mechanization,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China;Xinjiang Uygur Autonomous Region Grain and Oil Product Quality Supervision and Inspection Station,Urumqi 830002,China)

机构地区：[1]新疆农业大学食品科学与药学学院,新疆乌鲁木齐830052 [2]新疆农业科学院农业机械化研究所,新疆乌鲁木齐830091 [3]新疆维吾尔自治区粮油产品质量监督检验站,新疆乌鲁木齐830002

出　　处：《食品与发酵工业》2024年第11期270-276,共7页Food and Fermentation Industries

基　　金：新疆维吾尔自治区自然科学基金项目(2022D01A262);自治区重点研发计划项目(2022B02018-4)。

摘　　要：该试验以新疆‘法兰西’西梅为试材,采用不同贮藏温度(近冰温、1~2℃和4~6℃)处理,定期测定西梅果实品质及活性氧代谢相关指标。结果表明,西梅果实冰点为-2.8℃,确定西梅果实近冰温的贮藏温度为-1~-1.5℃,与1~2℃和4~6℃贮藏相比,近冰温贮藏可以显著维持西梅果实的表面色泽、硬度、可溶性固形物、可滴定酸和抗坏血酸的含量,有效降低西梅果实的呼吸强度。同时近冰温贮藏有效提高了西梅果实的过氧化物酶、过氧化氢酶和超氧化物歧化酶的活性,显著减缓超氧阴离子的产生速率,抑制H_(2)O_(2)的生成,进一步影响丙二醛的积累与细胞膜透性的上升。综上,近冰温贮藏可有效调控采后西梅果实活性氧代谢的平衡,保持其采后贮藏品质,从而延长其采后贮藏时间。该试验旨在为西梅采后贮藏保鲜提供技术参考和理论依据。This work explored the effects of near-freezing temperature storage,1-2℃storage,and 4-6℃storage on the quality and reactive oxygen species metabolism of‘France’prunes after harvest.Results showed that the freezing point of the fruit was determined to be-2.8℃.Compared with the other two storage temperatures,near-freezing temperature storage(-1--1.5℃)maintained the surface color,hardness,total soluble solids,titratable acidity,and ascorbic acid content of prune fruit,effectively reducing the respiratory intensity of the fruit and maintained good postharvest storage quality.In addition,near-freezing temperature storage increased the activity of peroxidase,catalase,and superoxide dismutase,and inhibited the accumulation of malondialdehyde and the intensification of cell membrane permeability,thereby maintaining the balance of reactive oxygen species metabolism.Therefore,near-freezing temperature storage can be used to improve the storage quality of prunes after harvest.

关 键 词：西梅 近冰温 冰点 贮藏品质 活性氧代谢 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]