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1-甲基环丙烯和氯化钙处理对鲜切西瓜果实脂质水解酶的作用 被引量:3

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摘要 无籽西瓜(Citrullus lanatus Thunb.Mansfeld,cv.Millionaire)果实在10μL/L 1-甲基环丙烯(1-MCP)或正常空气中预贮18h后,切取内果皮肉柱(直径7mm,长40mm),再用2%CaCl2或去离子水冲淋肉柱,然后将肉柱贮藏于10℃。测定贮藏过程中的果肉硬度、电导率、磷脂酶D(PLD)、磷脂酶C(PLC)和脂氧合酶(LOX)的活性变化。结果显示,2%CaCl2刺激PLD、PLC和LOX的活性,维持果肉的硬度。单独用CaCl2处理并不足以维持切割两瓜的品质,还可能因刺激脂质水解酶而发生不良的作用。1-MCP能够抵抗CaCl2对PLD、PLC和LOX的刺激作用。与对照相比,1-MCP与CaCl2结合处理能延缓两瓜果肉的衰老过程,表现出较高的果肉硬度和较低的脂质水解酶活性。
出处 《Acta Botanica Sinica》 CSCD 2004年第12期1402-1407,共6页 Acta Botanica Sinica(植物学报:英文版)
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