Postharvest Quality and Physiological Behavior of Sweet Potato (Ipomoea batatas Lam.) Leaf Stalks Under Three Temperatures

文献类型： 外文期刊

第一作者： Peng Yan

作者： Peng Yan;Mao Lin-chun;Xu Yong-quan;Duan Dao-fu

作者机构：

关键词： sweet potato;leaf stalks;storage;quality

期刊名称：AGRICULTURAL SCIENCES IN CHINA （ 影响因子：0.82； 五年影响因子：0.997 ）

ISSN： 1671-2927

年卷期： 2009 年 8 卷 2 期

页码：

收录情况： SCI

摘要： Sweet potato (Ipomoea batatas Lam.) leaf stalks were cut into 20 cm length, and stored at 20, 6, and 2 degrees C. The respiration rate, ethylene production, ascorbic acid, free amino acid, total chlorophyll content, freshness, and shelf life were determined during storage to investigate the effect of storage temperatures on the quality and physiological responses in sweet potato leaf stalks. Wound responses were observed as high respiration rate and ethylene production immediately after cutting. Sweet potato leaf stalks were found to be sensitive to chilling injury manifested as browning and water-soaking on the surface at 2 degrees C. In contrast, sweet potato leaf stalks were susceptible to senescence, exhibited by etiolating and yellowing, at 20 degrees C. Loss in weight and chlorophyll was minimized under low temperatures. High temperatures also caused the accumulation of amino acids with a significant loss of ascorbic acid and chlorophyll. Sweet potato leaf stalks had a storage life of 16 days at 6 degrees C, 8 days at 2 degrees C, and 6 days at 20 degrees C, respectively.

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