Development of the peach firmness during harvest period

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Libor Severa¹ 

[1] Ústav techniky a automobilové dopravy, Mendelova zemědělská a lesnická univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika;

关键词: peach;    firmness;    puncture test;   

DOI  :  10.11118/actaun200856040169

来源: DOAJ

【 摘 要 】

The objective of the present study is to characterize the rheological properties of peaches ac­cor­ding to the results of puncture test force/displacement curves. The measurements were carried out on the universal testing machine. The firmness of the peaches was measured on the equatorial side of the fruit. Four measurements were carried out on each fruit by varying the orientation at intervals by about 90°. The usedapproachcomputed six texture parameters from the curves, which were supposed to be representative of skin hardness, fruit deformation before skin rupture, flesh firmness and mechanical work needed to penetrate the fruit. The data were fitted by an exponential function. The correlation is not statistically significant. Its value only support the hypothesis about decrease of the skin strength and other values. Generally, there is a decreases with time from the harvest beginning but the scatter of the data is too high. The results show that used method enables to describe the peach firmness development during the harvest period butthe effective use of this method is based on the large number of experiments whichare destructive in their nature. Some new approach is briefly outlined.

【 授权许可】

Unknown