不同采收期对“贵长”猕猴桃后熟品质和酶活性的影响  

Effects of Different Harvest Stages on the Qualities and Enzymes Activities of‘Guichang’Kiwi Fruits

作　　者：曹森 瞿光凡 高芙蓉 刘亚非 黄亚欣 罗雪 王国立 王瑞 CAO Sen;QU Guang-fan;GAO Fu-rong;LIU Ya-fei;HUANG Ya-xin;LUO Xue;WANG Guo-li;WANG Rui(School of Food and Pharmaceutical Engineering,Guiyang College,Guiyang 550005,China;Xiangxi Tujia and Miao Autonomous Prefecture Agricultural Product Quality Inspection and Testing Center,Jishou 416000,China;Xiuwen County Agriculture Bureau,Guiyang 550200,China)

机构地区：[1]贵阳学院食品与制药工程学院,贵州贵阳550005 [2]湘西土家族苗族自治州农产品质量检验检测中心,湖南吉首416000 [3]修文县农业农村局,贵州贵阳550200

出　　处：《保鲜与加工》2021年第8期1-6,共6页Storage and Process

基　　金：贵阳市科技计划(筑科合同[2020]37-2号);贵阳学院科研资金资助[GYU-KY-(2021)]。

摘　　要：为明确“贵长”猕猴桃适宜的采收期,以“贵长”猕猴桃为试验材料,研究不同的采收期间(采收期1(H1,果实生长发育期120 d)、采收期2(H2,果实生长发育期130 d)、采收期3(H3,果实生长发育期140 d)、采收期4(H4,果实生长发育期150 d))在两种后熟途径(其中一种后熟途径为采收后直接进行货架期试验,另一种后熟途径为采收后冷藏90 d再进行货架期试验)下果实的品质和酶活性变化。结果表明:采收期H2和采收期H3在两种后熟途径过程中均能够不同程度地抑制果实可溶性固形物含量、可滴定酸含量、VC含量和超氧化物歧化酶(SOD)活性的下降,保持果实抗坏血酸过氧化物酶(APX)、过氧化氢酶(CAT)和过氧化物酶(POD)活性,降低脂氧合酶(LOX)活性。因此,建议“贵长”猕猴桃采收期为生长发育期130~140 d,有利于保证果实的后熟品质,适宜长期贮藏。In the present study,the‘Guichang’kiwi fruits were used as experimental materials,and the changes of qualities and enzymes activities were investigated under different harvest stages(harvest stage 1,H1,fruits growth and development stage 120 d;harvest stage 2,H2,fruits growth and development stage 130 d;harvest stage 3,H3,fruits growth and development stage 140 d;harvest stage 4,H4,fruits growth and development stage 150 d)through two post-ripening approaches(direct shelf life test of postharvest fruits,shelf life test after 90 days cold storage of postharvest fruits),aiming to determine the suitable harvest time of‘Guichang’kiwi fruits.Results showed that,the H2 and H3 harvest stages through these two post-ripening approaches could inhibit the soluble solids,titratable acids,VC contents and SOD activities reduction at different degrees of postharvest fruits,maintain the APX,CAT and POD activities,and decrease the LOX activities.Therefore,it is suggested that the harvest time of‘Guichang’kiwi fruits should be 130~140 d,which would be conducive to ensure the qualities after ripening and suitable for long-term storage.

关 键 词：“贵长”猕猴桃 采收期 后熟品质 衰老生理 

分 类 号：S663.4[农业科学—果树学]