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Gamma radiation control quality and lignification of bamboo shoots (Phyllostachys praecox f. prevemalis.) stored at low temperature

竹藤论文

期刊/会议:

POSTHARVEST BIOLOGY AND TECHNOLOGY

Language:

English

作者:

Zeng Fangfang; Xie Jianwei; Feng Simin

Experts:

Luo Zisheng

年份:

2015

卷:

102

页码:

17-24

关键词:

Bamboo shoot; Gamma radiation; Quality; Ethylene; Lignification

Bamboo shoots are highly nutritious but possess poor shelf life after harvest due to rapid decline of tenderness mostly result from lignification processes. Present investigation was performed to evaluate the potential of gamma radiation as a postharvest technology to preserve bamboo shoots. The effects of 0.5 kGy gamma radiation on quality and lignification of bamboo shoots during storage at 2 degrees C were investigated. The results showed that gamma radiation reduced the decay rate of bamboo shoots by 71% at the end of storage. It also significantly retarded ethylene production through controlling the activities of ACC synthase (ACS) and ACC oxidase (ACO), which may contribute to inhibition of lignin synthesis. Meanwhile, gamma radiation decreased the activities of phenylalanine ammonia-lyase (PAL), cinnamyl alcohol dehydrogenase (CAD) and peroxidase (POD), which are associated with lignin accumulation, thus reduced lignin content by 12.5% than that of the control after twenty-eight days of storage. These results demonstrated the potential of the gamma radiation as a promising postharvest technique to maintain the quality and inhibit the lignification of bamboo shoots. (C) 2015 Elsevier B.V. All rights reserved.