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高氧处理对草莓果实采后活性氧代谢和腐烂的影响

DOI: 10.7685/j.issn.1000-2030.2005.01.022, PP. 99-102

Keywords: 草莓,高氧,贮藏,活性氧代谢

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Abstract:

草莓“丰香”果实在5℃贮藏15d期间用60%和100%O2及空气(对照)气流连续处理,研究高氧处理对草莓果实活性氧代谢和腐烂的影响。结果表明,与对照相比,采用60%和100%O2处理可使果实保持较高的超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和抗坏血酸过氧化物酶(APX)活性及较高的维生素C含量,减少超氧阴离子自由基(O-2)和膜脂过氧化产物丙二醛(MDA)的积累;同时显著抑制果实纤维素酶活性的上升和果实硬度的下降,减轻果实腐烂发生。提示60%和100%O2处理可维持草莓采后活性氧代谢的平衡,从而延缓果实的衰老进程和抑制果实腐烂。

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