ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Study on the factors affecting storage of edible aroids.

Agbor-Egbe, T. and Rickard, J. E.

Annals of Applied Biology Year: 1991 Vol: 119 Issue: 1 Pages: 121-130 Ref: 30 ref.

1991

บทคัดย่อ

The effects of temp. (15, 25, 30 and 24-29 deg C), RH (45, 85 and 86-98%) and harvest maturity on the storage behaviour of cormels of Colocasia esculenta and Xanthosoma sagittifolium were studied. The changes monitored were respiration rates, weight losses, incidence of decay and sprouting. Postharvest losses that occurred during storage were influenced by storage conditions, the state of maturity at harvest and the morphological characteristics of the cormels. When stored under high temp. and humidity more sprouting and decay occurred with C. esculenta cormels than with X. sagittifolium cormels. Less sprouting and decay occurred with Colocasia cormels at high temp. and low RH than at high temp. and high RH but higher weight losses were recorded. Wound pathogens were the major cause of postharvest deterioration in Colocasia cormels and the causal pathogen of cormel decay was Sclerotium [Corticium] rolfsii. Under conditions of low temp. (15 deg ) and high RH (85%), cormels of both C. esculenta and X. sagittifolium were successfully stored for periods of 5-6 weeks. Similar storage periods were also possible under tropical ambient conditions with the Xanthosoma cultivars used in these experiments. Under the same storage conditions up to 60% decay occurred in the Colocasia cormels indicating the need for postharvest fungicide treatment.