บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Changes in firmness of the outer pericarp, inner pericarp, and core of Actinidia species during ripening.

Jackson, P. J.; Harker, F. R.;

New Zealand Journal of Crop and Horticultural Science Year: 1997 Vol: 25 Issue: 2 Pages: 185-189 Ref: 7 ref.

1997

บทคัดย่อ

Changes in firmness of the outer pericarp, inner pericarp, and core of Actinidia species during ripening.

Firmness of Actinidia deliciosa (kiwifruit), A. chinensis and A. arguta fruits was measured during postharvest ripening at 20 deg C using 2 methods. The first method involved driving a 2-mm-diameter probe radially into the fruit using a materials testing machine and recording the force-distance curve as the probe passed through the different tissue zones. In the second method, puncture measurements (again using a 2-mm-diameter probe) were made at a number of positions within tissues exposed by cutting equatorial or longitudinal slices of fruit (10 mm thick). The advantage of both methods is that they provide information on the firmness of all tissue zones within the flesh. By comparison, conventional penetrometer measurements mainly reflect the firmness of the outer pericarp. The results indicated that Actinidia spp. generally undergo similar reductions in firmness, although the period between harvest and initiation of softening and the length of the softening period may vary. In one of the sele

ctions of A. chinensis, the fruits did not soften.