Postharvest Quality and Physiological Behavior of Sweet Potato (Ipomoea batatas Lam.) Leaf Stalks Under Three Temperatures
文献类型: 外文期刊
作者: Peng Yan 1 ; Xu Yong-quan 2 ; Duan Dao-fu 3 ; Mao Lin-chun 1 ;
作者机构: 1.Zhejiang Univ, Coll Biosyst Engn & Food Sci, Dept Food Sci & Nutr, Hangzhou 310029, Zhejiang, Peoples R China
2.Chinese Acad Agr Sci, Tea Res Inst, Hangzhou 310008, Zhejiang, Peoples R China
3.Zhejiang Acad Agr Sci, Maize Res Inst, Dongyang 322100, Peoples R China
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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