采收期和贮藏温度对金艳猕猴桃品质的影响
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中国科学院知识创新工程重要方向项目(KSCX2-YW-N-082);国家自然科学基金项目(3097Z039)


Effects of Harvest Stage and Storage Temperature on Quality of ‘Jin Yan’ Kiwifruit (Actinidia chinensis×A. eriantha)
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    摘要:

    研究了金艳猕猴桃(Actinidia chinensis ×A. eriantha) 4个不同采收期(Ⅰ~Ⅳ)在常温[(23±1)℃]贮藏60 d,以及低温(4℃)贮藏2、4、6月后常温货架14 d内果实品质和果肉色彩的变化。结果表明:采收期Ⅰ和Ⅳ的果实在常温贮藏过程中呼吸高峰出现早、失重快,可滴定酸(TA)、维生素C(Vc)含量和果肉硬度迅速下降;而采收期Ⅱ和Ⅲ的果实呼吸高峰出现晚,保持了较高的TA、Vc含量和果肉硬度。4个采收期猕猴桃果实在常温贮藏期间,果实亮度L*、色度C*和色彩角h显著降低;而在低温贮藏后常温货架期间,果实色彩角h相对于亮度L*和色度C*变化更加明显。研究表明,采收期Ⅱ和Ⅲ为金艳猕猴桃的适宜采收期,色彩角h可以作为适宜的指标反映猕猴桃果实的后熟与衰老,而低温贮藏6个月金艳猕猴桃仍能保持较好的食用品质和色彩。

    Abstract:

    The changes in quality and flesh color of ‘Jin Yan’ kiwifruits were investigated. ‘Jin Yan’ kiwifruits (Actinidia chinensis × A. eriantha) were harvested at four different times, and stored for 60 days at (23±1)℃ and for 2, 4, 6 months at 4℃, respectively, before maintained for 2 weeks at ambient temperatures [(23±1)℃]. The results showed that the respiratory peaks of fruits harvested at Ⅰ and Ⅳ stages were earlier than those of fruits harvested at Ⅱand Ⅲ stages, and the fruit weight loss were also faster, as well as the titratable acidity (TA), vitamin C (Vc) content and flesh firmness rapidly decreased. Fruit lightness (L*), chroma (C*) and hue angle (h) in fruits of the four harvest stages decreased significantly during ambient storage, nevertheless h changed more obviously than L* and C* in fruit maintained for 2 weeks at ambient temperature after cold storage. It suggested that the harvest Ⅱ and Ⅲ stages were suitable for harvesting of ‘Jin Yan’ kiwifruit, and h could be used as an appropriate indicator of ripening and senescence of kiwifruit. In addition, edible quality and flesh color of ‘Jin Yan’ kiwifruit were well maintained even after cold storage for 6 months.

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钱政江,刘亭,王慧,屈红霞,钟彩虹,黄宏文,蒋跃明.采收期和贮藏温度对金艳猕猴桃品质的影响[J].热带亚热带植物学报,2011,19(2):127~134

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  • 收稿日期:2010-07-27
  • 最后修改日期:2010-11-17
  • 录用日期:2010-11-30
  • 在线发布日期: 2011-04-08
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