ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Role of temperature on reduction of cherry damage.

Kupferman, G.; Miller, K.; Rengasamy, B.;

Tree Fruit Postharvest Journal Year: 1995 Vol: 6 Issue: 1 Pages: 14-17

1995

บทคัดย่อ

Studies were conducted over 3 years to determine the effect of temperature on the expression of impact damage (pitting) of Bing cherries. In the 1992 study, fruits were harvested from single trees in 4 orchards and cooled to 34, 40, 45, 50 or 55 deg F. The fruits were dropped from a height of 3 in. onto a rigid mesh link belt and then held in polyethylene bags at 40 deg for one week. The fruits were moved to room temperature (RT) for 24 h prior to being evaluated for pitting damage. In the 1993 study, fruits were harvested from 10 trees in 2 orchards on 2 different dates and cooled to 34, 45 or 68 deg . The fruits were dropped from a height of 3, 6 or 12 in. onto a dimpled belt and then stored at 34 deg for 2 weeks, held at RT for 24 h, and then evaluated for pitting damage. In the 1994 study, fruits were harvested from 4 orchards (3 trees/orchard) representing 3 different harvesting periods and elevations, and cooled to 34, 40, 50 or 68 deg (and in some cases 45 deg ). The fruits were dropped f

rom a height of 3 in. onto a dimpled belt through a PVC tube to ensure the fruits landed on the stylar end. Subsequently, the fruits were stored at 34 deg for 2 weeks, held at RT for 24 h, and then evaluated for pitting damage. Statistical analysis of the data from the 3 studies indicated that a linear relationship exists between flesh temperature at the time of dropping and the amount of damage which develops. The higher the flesh temperature, the less pitting developed. The influence of temperature on pitting varied with orchard and year but the reasons for this were unclear.