|
KMID : 0903619990400010056
|
|
Journal of the Korean Society for Horticultural Science
1999 Volume.40 No. 1 p.56 ~ p.60
|
|
|
Changes in Postharvest Physiology in Relation to the Incidence of CA Disorders during CA Storage of ´ Fuji ´ Apples
|
|
|
|
|
Abstract
|
|
|
|
Physiological metabolism of ´Fuji´ apples was investigated after harvest in relation to the incidence of internal browning symptoms during CA storage. Apples were harvested twice at 14 day intervals; early-harvested apples were stored in CA (1-2% CO₂ + 2-3% O₂) immediately after harvest (standard CA), and late-harvested apples were stored in air, standard CA, and delaying CA (CA application after 4 week delay in air at 0℃). Apples were removed from the store at 15 day intervals and metabolic rates were evaluated. The incidence and the severity of internal browning symptoms were higher in CA stored apples than in delaying CA stored apples indicating that delayed CA application suppressed the development of disorder. Apples stored in air were mostly sound. Standard CA-stored apples showed relatively lower rates of respiration and ethylene evolution than air-stored apples. In delaying CA apples, the metabolic rates were similar to standard CA-stored apple during early storage period but seemed to increase during the later period. Contents of 1-aminocyclopropane-1-carboxylic acid (ACC) in air-stored apples tended to increase and became higher than those in standard CA- and delaying CA-stored apples during the late storage period. CA application seemed to suppress the conversion of ACC to ethylene. Levels of ethanol, product of anaerobiosis, increased in CA-stored apples until 60 to 75 days of storage and then sharply decreased, whereas those in air-stored apples stayed relatively low throughout the storage. The data partially supported the idea that retained potential of energy metabolism during storage might reduce the susceptibility to the disorder.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|