BTH浸泡处理对厚皮甜瓜采后病害的控制及贮藏品质的影响

食品科学 ›› 2013, Vol. 34 ›› Issue (2): 267-272.

BTH浸泡处理对厚皮甜瓜采后病害的控制及贮藏品质的影响

任亚琳

甘肃农业大学食品科学与工程学院

收稿日期:2011-12-10 修回日期:2012-12-28 出版日期:2013-01-25 发布日期:2013-01-15
通讯作者: 任亚琳 E-mail:yalin0814@st.gsau.edu.cn

Effect of BTH Dipping Treatment on Postharvest Diseases Control and Storage Quality of Muskmelon Fruits

Received:2011-12-10 Revised:2012-12-28 Online:2013-01-25 Published:2013-01-15

摘要/Abstract

摘要： 为了探讨采后BTH处理对厚皮甜瓜的贮藏效果，以“玉金香”厚皮甜瓜为试材，用100mg/L BTH常温浸泡处理10min，研究处理对粉红单端孢（Trichothecium roseum）损伤接种果实病斑面积和自然发病率的抑制以及对果实主要贮藏品质的影响。结果表明，BTH处理显著降低了（P<0.05）果实损伤接种T. roseum的病斑面积和常温贮藏期间的自然发病率；BTH处理明显诱导了果实体内苯丙氨酸解氨酶（PAL）、过氧化物酶（POD）、多酚氧化酶（PPO）等防御酶活性的增强。此外，BTH处理还有效减缓了果实失重率和可溶性果胶含量的上升，明显降低了果实硬度、维生素C（Vc）和可溶性固形物含量（SSC）下降的速度，降低了果皮颜色转黄的速率，从而延缓了甜瓜果实采后衰老进程，提高了果实的采后抗病性和贮藏品质。研究结果认为采后适当浓度的BTH处理不仅能够增强厚皮甜瓜果实的抗病性，还能提高果实的贮藏品质。

Abstract: In order to probe into the effects of postharvest BTH treatment on storage effectiveness in muskmelon fruit, muskmelons (Cucumis melo L. cv. yujinxiang) were dipped at 100mg/L of BTH solution for 10min. The inhibition effect of BTH treatment on the lesion area of fruits inoculated with Trichothecium roseum and natural disease incidence of melons were investigated during storage at room temperature. The changes of main storage quality index in muskmelon fruits during storage were also measured. The results showed that BTH treatment significantly decreased (P<0.05) the lesion area of fruits inoculated with T. roseum, and the natural disease incidence of fruits during storage at room temperature. The treatment obviously induced the enhancement of defense enzyme activity including phenylalanine ammonia lyase (PAL), peroxidase (POD) and polyphenol oxidase (PPO) in fruits. BTH treatment also effectively retarded the increase of weight loss and soluble pectin content, and delayed the decline of fruit firmness, Vitamin C (Vc) and soluble solids content. BTH treatment also reduced the transformation rate of skin color from green to yellow. Consequently, BTH treatment delayed the senescence process of muskmelon fruits, and increased disease resistance and storage quality of fruits. These results indicated that postharvest BTH treatment at proper concentration not only increased disease resistance, but also enhanced storage quality of muskmelon fruits.

任亚琳. BTH浸泡处理对厚皮甜瓜采后病害的控制及贮藏品质的影响[J]. 食品科学, 2013, 34(2): 267-272.