ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Physiological postharvest response of savory (Satureja hortensis L.).

Bottcher, H.; Gunther, I.; Warnstorff, K.;

Gartenbauwissenschaft Year: 2000 Vol: 65 Issue: 1 Pages: 22-29 Ref: 14 ref.

2000

บทคัดย่อ

Freshly harvested S. hortensis (cv. Aromata) from field cultivation (in Germany) is characterized by an unusually high respiration rate. Mean values of 8 trials held at 10, 20 and 30 deg C were 696, 1578 and 2536 W t-1, respectively. These comparatively high rates were maintained throughout a postharvest period of 80 h. The values declined only by 49, 46 and 41% of the initial rate for each temperature range, and even at 30 deg C there was no respiratory collapse despite notable senescence and wilting. This behaviour required the introduction of a senescence-independent part of respiration activity ( alpha ) into a regression model for characterizing the postharvest course of respiration for perishable plant crops. The considerable variance was explained by the annual weather and growing conditions and the location. The high respiration rate ensued a distinct loss of dry matter throughout postharvest time (10 deg C: 1.3% in 24 h) and a decrease in fresh weight due to transpiration (10 deg C: 1.6

5% in 24 h). Colour and exterior quality were best maintained in dried material, when S. hortensis was held at relative cool conditions after harvest.