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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (23): 139-144.doi: 10.11924/j.issn.1000-6850.casb2024-0700

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Quality Changes of Dual-purpose Sweet Potato During Storage Period

MENG Fanqi1(), LI Ke2, WANG Qing1, LIU Yongpeng1, MA Chunye1, SUN Jian3, HUANG Dahua1, LIU Zhijian1(), ZHANG Yongyue1()   

  1. 1 Luohe Academy of Agricultural Sciences, Luohe, Henan 462000
    2 Luohe Vocational Technology College, Luohe, Henan 462000
    3 Xuzhou Institute of Agricultural Sciences in Xuhuai Region of Jiangsu/Xuzhou Sweetpotato Research Center of Jiangsu Province, Xuzhou, Jiangsu 221131
  • Received:2024-11-15 Revised:2025-02-15 Online:2025-08-19 Published:2025-08-19

Abstract:

To investigate nutritional quality changes law of dual-purpose sweet potato varieties during storage and provide theoretical guidance for further utilization (processing, consumption, etc.), this experiment used three varieties 'Shangshu No.19', 'Luoshu No.11' and 'Luoshu No.16' as test materials. Statistical trait data were collected during storage, and nutritional quality data were obtained using colorimetric methods. Statistical software was employed for data analysis. The results showed that a significant negative correlation existed between marketable tuber rate and dry matter consumption rate (coefficient of determination: 0.99874). Moisture consumption rate showed significant annual variations (P<0.01). Trends in nutritional quality indices varied complexly among varieties during storage. Ash content and crude protein content exhibited a highly significant positive correlation (coefficient of determination: 0.9819), while no unified correlations were observed among other quality indices. Dry matter consumption rate serves as a relatively precise indicator for evaluating sweet potato storability. For industrial starch extraction, targeted cultivar selection is required based on specific storage duration requirements. The complex dynamics of nutritional quality in dual-purpose sweet potatoes during storage warrant further investigation.

Key words: storage, sweet potato, nutritional quality, starch processing, consumption