Effects of hypobaric storage on softening and cell wall metabolism of Xinjiang kuqa apricot fruits

In order to explore the effectiveness of hypobaric storage on postharvest of kuqa apricot fruits, the effects of hypobaric storage on softening and cell wall metabolism of Xingjiang kuqa apricot were investigated. The results showed the ethylene production and respiratory rates of kuqa apricot with hypobaric storage were significantly reduced; and the activities of polygalacturonase (PG) and pectin methylesterase (PME), and cellulase enzymes were significantly retarded during storage at 0℃. So the hydrolysis of protopectin and cellulose were decreased. This study suggested that 50 kPa of the hypobaric storage was the best in maintaining fruit firmness and extending the postharvest life of kuqa apricot fruits. The research provides a basis for hypobaric storage mechanism of Xingjiang kuqa apricot fruits.