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| Postharvest Quality and Physiological Behavior of Sweet Potato （Ipomoea batatas Lam.） Leaf Stalks Under Three Temperatures | |
| 作者姓名： | PENG Yan XU Yong-quan DUAN Dao-fu MAO Lin-chun |
| 作者单位： | PENG Yan,MAO Lin-chun(Department of Food Science and Nutrition, College of Biosystem Engineering and Food Science, Zhejiang University, Hangzhou 310029, P.R. China);XU Yong-quan(Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, PR.China);DUAN Dao-fu(Maize Research Institute, Zhejiang Academy of Agricultural Sciences, Dongyang 322100, P.R.China) |
| 基金项目： | Acknowledgements The authors wish to thank Wang Guoze, Pang Huaqing, Fang Xuehua, Pan Xin, Wu Tao, and Que Fei for their experiment assistance. This work was supported by the National Natural Science Foundation of China. |
| 摘 要： | Sweet potato （Ipomoea batatas Lam.） leaf stalks were cut into 20 cm length, and stored at 20, 6, and 2℃. 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℃. In contrast, sweet potato leaf stalks were susceptible to senescence, exhibited by etiolating and yellowing, at 20℃. 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℃, 8 days at 2℃, and 6 days at 20℃, respectively. |
| 关 键 词： | 贮藏温度 甘薯叶 秸秆 红薯 生理特性 采后品质 叶绿素含量 游离氨基酸 |
| 收稿时间： | 17 March 2008 |
Postharvest Quality and Physiological Behavior of Sweet Potato (Ipomoea batatas Lam.) Leaf Stalks Under Three Temperatures |
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| PENG Yan,XU Yong-quan,DUAN Dao-fu,MAO Lin-chun.Postharvest Quality and Physiological Behavior of Sweet Potato (Ipomoea batatas Lam.) Leaf Stalks Under Three Temperatures[J].Agricultural Sciences in China,2009,8(2):244-248. | |
| Authors: | PENG Yan XU Yong-quan DUAN Dao-fu MAO Lin-chun |
| Institution: | 1. Department of Food Science and Nutrition, College of Biosystem Engineering and Food Science, Zhejiang University, Hangzhou 310029, P.R. China 2. Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, PR.China 3. Maize Research Institute, Zhejiang Academy of Agricultural Sciences, Dongyang 322100, P.R.China |
| Abstract: | Sweet potato (lpomoea batatas Lam.) leaf stalks were cut into 20 cm length, and stored at 20, 6, and 2℃. 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℃. In contrast, sweet potato leaf stalks were susceptible to senescence, exhibited by etiolating and yellowing, at 20℃. 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℃, 8 days at 2℃, and 6 days at 20℃, respectively. |
| Keywords: | sweet potato leaf stalks storage quality |
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