INFLUENCE OF CA AND ULO STORAGE-CONDITION S ON QUALITY PARAMETERS ANDRIPENING OF PRECLIMACTERIC AND CLIMACTERIC HARVESTED APPLE FRUITS .2.EFFECT ON ETHYLENE, CO2, AROMA, AND FATTY-ACID PRODUCTION
A. Brackmann et al., INFLUENCE OF CA AND ULO STORAGE-CONDITION S ON QUALITY PARAMETERS ANDRIPENING OF PRECLIMACTERIC AND CLIMACTERIC HARVESTED APPLE FRUITS .2.EFFECT ON ETHYLENE, CO2, AROMA, AND FATTY-ACID PRODUCTION, Gartenbauwissenschaft, 60(1), 1995, pp. 1-6
The effect of ultra low oxygen (ULO, 3 % CO2 +1 % O-2) and low ethylen
e (1 ppm C2H4) storage on the production of ethylene, CO2, aroma volat
iles, and fatty acids of preclimacteric and climacteric harvested 'Gol
den Delicious' apples were evaluated during shelf life at 20 degrees C
. Activity of ACC oxidase, increase of ethylene and CO2 as well as pro
duction of aroma volatiles and fatty acids were inhibited during shelf
life after 8 months storage. The reduction of all these parameters wa
s more pronounced in preclimacteric harvested fruits than in climacter
ic fruits. Increasing CO2 concentrations from 1 to 3 % at ULO conditio
ns (1 % O-2) intensified the inhibition of respiration and the product
ion of ethylene, aroma, and fatty acids. On the other hand, removal of
ethylene from the store atmosphere only slightly affected CO2 and aro
ma production of apples. The results indicate the possible relationshi
p between retarded farcy acid synthesis and production of reduced arom
a volatiles.