高浓度CO_(2)短时处理对西梅采后贮藏品质及抗氧化代谢的影响  

Effects of Short-term Treatment with High Concentration CO_(2)on Post-harvest Storage Quality and Antioxidant Metabolism of Plums

作　　者：刘志旭 朱璇 赵亚婷 张昱 石慧敏 栾若林 刘嘉宝 LIU Zhixu;ZHU Xuan;ZHAO Yating;ZHANG Yu;SHI Huimin;LUAN Ruolin;LIU Jiabao(College of Food Science and Pharmacy,Xinjiang Agricultural University,Urumqi 830052,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

出　　处：《食品工业科技》2024年第12期311-318,共8页Science and Technology of Food Industry

基　　金：自治区重点研发计划项目(2022B02018-2);南京农业大学-新疆农业大学联合基金项目(KYYJ201908)。

摘　　要：为明确高浓度二氧化碳(carbon dioxide,CO_(2))短时处理对西梅采后贮藏品质及抗氧化代谢的影响,以新疆‘法兰西’西梅为试材,分别采用45%、60%、75%的CO_(2)熏蒸西梅果实3 h,于1.0±0.5℃条件下贮藏49 d,定期测定西梅果实硬度、色泽、可溶性固形物含量、可滴定酸含量及抗氧化代谢相关指标。结果表明:高浓度CO_(2)短时处理可有效维持西梅果实硬度、色泽、可溶性固形物及可滴定酸含量水平,其中60%CO_(2)处理对西梅果实品质维持效果最佳。贮藏结束时,60%CO_(2)处理组西梅果实超氧化物歧化酶(superoxide dismutase,SOD)、过氧化氢酶(catalase,CAT)、过氧化物酶(peroxidase,POD)、谷胱甘肽还原酶(glutathione reductase,GR)、抗坏血酸过氧化物酶(ascorbate peroxidase,APX)活性分别比对照组高5.71%、59.95%、27.40%、29.18%和45.00%(P<0.05),抗坏血酸(ascorbic acid,AsA)与谷胱甘肽(glutathione,GSH)含量是对照组的1.42倍和1.23倍,提高了西梅果实抗氧化酶活性,有效维持了AsA与GSH含量,降低了超氧阴离子(superoxide anion,O_(2)^(-)·)产生速率,延缓了过氧化氢(hydrogen peroxide,H_(2)O_(2))含量、丙二醛(malondialdehyde,MDA)含量的积累和细胞膜透性的上升。说明高浓度CO_(2)短时处理可增强西梅果实贮藏期间的抗氧化代谢,保持果实贮藏品质。'Franch'plums were used as experimental material to elucidate the effects of short-term treatment with high concentration of carbon dioxide(CO_(2))on post-harvest storage quality and antioxidant metabolism.The fruits were treated with 45%,60%,and 75%CO_(2)for 3 hours,and then stored at 1.0±0.5℃for 49 days.The firmness,color,soluble solids content,titratable acid content,and indicators related to antioxidant metabolism of the plums were measured during cold storage.The results showed that short-term treatment with high concentration CO_(2)can effectively maintain the firmness,color,soluble solids,and titratable acid content of plums,among which 60%CO_(2)treatment showed the best effects in maintaining fruit quality.At the end of storage,the activities of superoxide dismutase(SOD),catalase(CAT),peroxidase(POD),glutathione reductase(GR),and ascorbate peroxidase(APX)in the 60%CO_(2)treatment group were 5.71%,59.95%,27.40%,29.18%,and 45.00%(P<0.05)higher than those in control group,respectively.The contents of ascorbic acid(AsA)and glutathione(GSH)were 1.42 and 1.23 times higher than the control group,respectively.This increased the activity of antioxidant enzymes,maintained the content of AsA and GSH,reducing the production rate of superoxide anion(O_(2)^(-)·),and delaying the accumulation of hydrogen peroxide(H_(2)O_(2))content,malondialdehyde(MDA)content and the increase in cell membrane permeability.These results indicate that short-term treatment with high concentration CO_(2)can enhance the antioxidant metabolism of plums during storage,thereby preserving fruit quality.

关 键 词：西梅果实 二氧化碳(CO_(2)) 采后保鲜 抗氧化代谢 贮藏品质 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]