采后O3处理对使用CPPU猕猴桃贮藏品质及其抗性酶活性的影响

被引：19

作者：

苏苗

罗安伟

李圆圆

李琳

白俊青

蔺志颖

机构：

[1] 西北农林科技大学食品科学与工程学院

来源：

现代食品科技 | 2018年 / 34卷 / 03期

关键词：

臭氧; N-2-氯-4-吡啶基苯-N’-苯基脲; 猕猴桃; 贮藏品质; 抗性酶;

D O I：

10.13982/j.mfst.1673-9078.2018.03.007

中图分类号：

TS255.3 [果蔬加工与保藏];

学科分类号：

083203 [农产品加工及贮藏工程];

摘要：

为探究臭氧（ozone,O3）对膨大剂（N-2-氯-4-吡啶基苯-N’-苯基脲,CPPU）处理秦美猕猴桃果实贮藏期间其品质劣变的抑制效果,本文以生长期使用了20 mg/L CPPU的秦美猕猴桃果实为试验材料,在0±1℃条件下贮藏。研究了10、40和70 mg/m3 O3处理对贮藏期间秦美猕猴桃果实的品质指标、乙烯释放量、呼吸强度以及抗性酶活性的影响。试验结果表明40 mg/m3 O3可以减缓CPPU处理的秦美猕猴桃品质的下降趋势,减轻了可滴定酸、Vc含量的下降,保持了较好的硬度,减缓了可溶性固形物含量的上升;抑制了乙烯释放量和呼吸强度,减少果实软化;并增加了苯丙氨酸解氨酶（Phenylalanine ammonia lyase,PAL）、β-1,3-葡聚糖酶（β-1,3-glucanase,GLU）、几丁质酶（Chitinase,CHI）的活性,从而减少了秦美猕猴桃果实的腐烂率。O3处理能有效减轻CPPU处理对秦美猕猴桃果实产生的负面影响并延长贮藏时间。

引用

页码：46 / 53+76 +76

页数：9

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