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Kiwifruit firmness: Measurement by penetrometer and non-destructive devices

文献类型： 外文期刊

作者： Li, Huajia 1 ; Pidakala, Paul 1 ; Billing, David 1 ; Burdon, Jeremy 1 ;

作者机构： 1.New Zealand Inst Plant & Food Res Ltd PFR, Auckland Mail Ctr, Private Bag 92169, Auckland 1142, New Zealand

关键词： Firmness;Non-destructive;Penetrometer;Speed;Actinidia

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：5.537； 五年影响因子：5.821 ）

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收录情况： SCI

摘要： Kiwifruit texture or firmness is critical to the commercial handling and eating quality of the fruit, with fruit acceptability based on firmness thresholds. Two aspects of kiwifruit firmness measurement have been investigated: i) the effect of speed of penetrometer probe movement before (approach speed) and during firmness measurement (measurement speed) and ii) a comparison of firmness values derived from compression, impact and acoustic impulse non-destructive measurements compared with a standard penetrometer measurement. Both series of experiments were repeated on fruit from two commercially available cultivars ('Hayward' and 'Zesy002' - commonly called Gold3). It is concluded that the approach speed did not affect the firmness value obtained, whereas a faster measurement speed increased the firmness value obtained for 'Hayward' and Gold3 fruit at < 40 N firmness. The use of non-destructive firmness measurement techniques tended to give good overall relationships in line with penetrometer measurements of firmness. However, for any given penetrometer firmness value, it appears that the non-destructive value obtained may depend on when in storage the measurement was made. The cause of the storage-related variability in the relationship requires further investigation of both the biological and physical processes occurring. (C) 2016 Elsevier B.V. All rights reserved.

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[1]Textural changes in 'Hayward' kiwifruit during and after storage in controlled atmospheres. Li, Huajia,Billing, David,Pidakala, Paul,Burdon, Jeremy.

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