摘要
为研究外源信号分子茉莉酸甲酯(Me JA)和乙烯(Eth)对鲜切果蔬抗氧化酶活力和苯丙烷代谢的影响,以鲜切富士苹果为实验材料,利用Me JA和乙烯利浸泡处理,在10℃下贮藏,分析贮藏期间抗氧化酶类多酚氧化酶(PPO)、过氧化物酶(POD)和抗坏血酸过氧化物酶(APX)以及苯丙氨酸解氨酶(PAL)活性的变化。结果表明:与空白对照相比,Me JA和乙烯利可以显著提高鲜切富士苹果PPO和POD活性(p<0.05),降低APX活性下降速率。两种处理都可以提高PAL的活性,乙烯利对增强PAL活性效果更显著(p<0.05)。两种外源信号分子可以提高鲜切苹果的抗氧化能力及苯丙烷代谢能力,启动鲜切苹果的防御反应,提高果实抗性。
In order to determine the effect of two exogenous signal molecules--jasmonic acid methyl ester（MeJA） and ethephon onantioxidant enzyme activity and phenylpropanoid metabolism for fresh-cut fruit and vegetables, fresh-cut apple was taken as material,and treated with exogenous ethephon and MeJA,stored at 10 %. Antioxidant system enzymes PPO,POD,APX and phenylpropanes metabolic system enzymes PAL were analyzed. The results indicated that MeJA and ethylenecould effectively improved fresh-cut Fuji apple PP~ and POD activity,and slowed down the decline rate of APX activity. The effects of exogenous ethylene and MeJA on PPO,POD and APX were similar. MeJA and ethephon could effectively improve PAL activity,and the effect of ethylene was more obvious. The two signal molecules could improve the ability of antioxidant system and phenylpropanes metabolic system,and started defense reaction of fresh-cut apple and increased fruit resistance.
出处
《食品工业科技》
CAS
CSCD
北大核心
2015年第16期324-327,332,共5页
Science and Technology of Food Industry
基金
国家科技支撑计划项目(2012BAD38B05)
国家自然科学基金项目(31340038
31172009
31471923)
关键词
鲜切苹果
乙烯利
茉莉酸甲酯
抗氧化能力
苯丙烷代谢
fresh-cut apple
ethephon
jasmonic acid methyl ester
antioxidant enzyme activity
phenylpropanoidmetabolism
作者简介
闫媛媛（1990-），女，在读硕士研究生，研究方向：食品加工与质量安全控制，E-mail：yanyuanyuansw@163．com.
通讯作者：胡文忠（1959-），男，教授，研究方向：食品加工与质量安全控制，E—mail：hwz@dlnu．edu．cn。
