Influence of gamma-irradiation on the reactive-oxygen metabolism of blueberry fruit during cold storage

文献类型： 外文期刊

第一作者： Wang, Chen

作者： Wang, Chen;Gao, Ya;Wu, Xingzhuang;Tao, Ye;Cui Zhibo

作者机构：

关键词： gamma-Irradiation;Blueberry;Preservation effect;Reactive-oxygen metabolism

期刊名称：INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES （ 影响因子：5.916； 五年影响因子：6.159 ）

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年卷期：

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收录情况： SCI

摘要： To explore a safe, environmentally friendly, and efficient preservation technology for blueberry (Semen trigonellae), "Bluecrop" blueberry fruits were treated with different irradiation doses. During cold storage at 0 +/- 5 degrees C, the decay rate, fruit firmness, and indices relating to respiration and reactive-oxygen metabolism were detected regularly. Results showed that irradiation treatment with 1.0 kGy to 2.5 kGy doses was able to inhibit the respiration intensity, ethylene production, and the improvement of lipoxygenase (LOX) activity, thus reducing the increase of malondialdehyde (MDA) content and the permeability of cell membranes. In addition, irradiation treatment can improve the activities of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) to eliminate, on a continual basis, the constantly generated superoxide anions (O-2(-)center dot) and hydrogen peroxide (H2O2), keeping them at a low level: ultimately, this effectively guaranteed the storage quality and postponed the senescence process in the blueberry fruits. Meanwhile, those irradiated at 2.5 kGy presented optimal preservation effects as the respiration was inhibited to the utmost extent and the anti-oxidisation effect was enhanced. The results prove that the Co-60 gamma-irradiation treatment at proper doses is an effective method of storing post-harvest blueberry fruits at low temperatures.

分类号： TS2

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