บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Investigation on early softening of kiwifruit.

Cooper T., Gargiullo A., Retamales J., Streif J.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.53

2004

บทคัดย่อ

Investigation on early softening of kiwifruit.    Early softening is the main problem for the exports of Chilean kiwi fruit.It has been related to orchard condition and to harvest and postharvest handling.In this investigation, experiments were carried out to test the influence of growing conditions and some fruit characteristics o­n the softening rate of kiwi fruit, from different orchard in the central zone of Chile.Fruits from all orchards were harvested at 6.2-6.5 soluble solid content, and kept under the same storage condition (0 °C, air).Samples were taken every fifteen days to determine softening index (S.I.), which was calculated by the initial firmness minus final firmness, divided by the days till the fruit reached 2 kg of firmness.

There was a large variation in I.S. between orchards and also in the same orchard.In the best orchard.Inthe best orchard the fruits were stored for 135 days having S.I. 0.116; in the worst for 60 days and S.I. 0.257.The tested fruit characteristics were size, position, and illumination of fruit in the plant.For this purpose fruit from the same plants were harvested and tested in the same way as described before.The influence of size o­n early softening was found in 3 o the 4 orchards tested, having the larger fruit (>115 g) the lowest S.I.The position of the fruit o­n the plant (distances from the base of the cane) had no influence o­n S.I.The fruit better illuminated o­n the plant had higher initial firmness, but also higher softening index during storage.Nevertheless the final firmness was higher in the better illuminated fruit.