Optimum harvest maturity in relation to its physico-chemical quality of pollinated soursop (Annona muricata L.) fruit
Soursop (Annona muricata L.) is a highly perishable climacteric fruit that does not ripen adequately when harvested at an immature stage. Once matured, the fruit is susceptible to postharvest losses, due to its rapid ripening process. Therefore, the right time to harvest the fruit is an important criterion to take into account so that postharvest shelf life can be extended over a longer period when stored or on display. The determination of harvesting stages in relation to the physico-chemical quality of pollinated fruit was investigated. Soursop flowers were hand-pollinated and tagged on the day of anthesis. Pollinated fruit with ovate or oblong shapes were harvested in the 16, 17, 18, 19 and 20th week after anthesis. The results showed that harvesting time has a significant effect on firmness and peel colour. Fruit firmness decreased by 26.8%, from 76.64 to 56.11 N. Colour changed from green to light green during harvesting periods. However, harvesting from week 16 to 20 after anthesis did not significantly affect physico-chemical qualities such as respiration rate, ethylene production, soluble solids concentration, titratable acidity, ascorbic acid and pH of pollinated fruits.
Lem, M.S., Mahmud, T.M.M. and Ding, P. (2017). Optimum harvest maturity in relation to its physico-chemical quality of pollinated soursop (Annona muricata L.) fruit. Acta Hortic. 1179, 19-24
pollinated soursop, harvest maturity, physico-chemical, firmness, colour