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‘金桃’猕猴桃采后贮藏中食用品质变化及快速无损检测
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天津商业大学

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“十四五”国家重点研发计划重点专项


Changes in Eating Quality and Rapid Non-destructive Detection of ''Jintao'' Kiwifruit during Postharvest Storage
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    摘要:

    摘要:猕猴桃采后贮藏期间食用品质的变化影响其商品价值。为探究不同贮藏温度对猕猴桃食用品质的影响,建立主要食用品质指标的快速无损检测方法,将‘金桃’猕猴桃果实贮藏于10 ℃和20 ℃条件下,定期测定主要品质指标及软化相关酶活性变化,同时利用无损检测仪对可溶性固形物和硬度进行检测。结果表明,果实硬度、可滴定酸和淀粉含量随贮藏时间的延长呈下降趋势,可溶性固形物及还原糖等呈上升趋势,10 ℃贮藏抑制了猕猴桃果实中多聚半乳糖醛酸酶、纤维素酶和淀粉酶的活性。贮藏30 d时,10 ℃组果实硬度、可滴定酸及原果胶含量比0 d分别降低55.29%、31.43%、77.97%(P<0.05),10 ℃比20 ℃更能有效维持果实贮藏期间品质。可溶性固形物和硬度的无损检测结果与实测结果的拟合方程的决定系数分别为0.68、0.65,拟合精度较好。本研究为‘金桃’及其它猕猴桃采后食用品质变化调控与可溶性固形物及硬度的快速无损检测提供理论依据和技术参考。

    Abstract:

    Abstract: The commercial value of kiwifruit is affected by changes in its eating quality during postharvest storage. To investigate the effects of storage temperatures on the eating quality of kiwifruit and to establish rapid non-destructive detection methods for major eating quality indices, fruits of ''Jintao'' kiwifruit were stored at 10 ℃ and 20 ℃, and major quality indices and changes in softening-related enzyme activities were periodically determined, while total soluble solids (TSS) and firmness were measured using a non-destructive detector. Decreasing trends with prolonged storage time were observed for firmness, titratable acidity, and starch content, whereas increasing trends were observed for TSS and reducing sugar, etc.; moreover, the activities of polygalacturonase, cellulase, and amylase in kiwifruit fruits were inhibited by storage at 10 ℃. At 30 d of storage, firmness, titratable acidity, and protopectin content in the 10 ℃ group were reduced by 55.29%, 31.43%, and 77.97%, respectively, relative to 0 d (P < 0.05); fruit quality during storage was more effectively maintained at 10 ℃ than at 20 ℃. The coefficients of determination of the fitted equations between the non-destructive detection results and the measured results for TSS and firmness were 0.68 and 0.65, respectively, indicating satisfactory fitting accuracy. A theoretical basis and technical reference for the regulation of postharvest eating quality changes and the rapid non-destructive detection of TSS and firmness in ''Jintao'' and other kiwifruit are provided in this study.

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  • 收稿日期:2026-09-18
  • 最后修改日期:2026-11-06
  • 录用日期:2026-11-09
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