Controlling of peel and flesh color development of mango by perforation of Modified Atmosphere package at different temperatures.
Sornsrivichai J., Uthaibutra J., Yantarasri T.
Author Affiliation: Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
: 387-394
Abstract : Gas permeability of most polymeric films for modified atmosphere (MA) packaging of mangoes was insufficient for proper colour development. This study was aimed at investigating the effect of degree of perforation of MA packaging on colour development of the peel and flesh of Nam Dok Mai mangoes in Thailand. To develop the marketable colour of the peel at an ambient temperature of 28°C, minimum total pore area (TPA) of 0.64 cm² was required, while for flesh, TPA of 0.08 cm² was needed to bring O2 concentration above 17% and 9% to allow proper colour development in 8 and 5 days, respectively. When the storage temperature was reduced to 20°C, the change of peel and flesh colour was suppressed for 2 weeks in all perforated packages. When the PVC film was perforated by >0.049 cm² (O2>14%), a minimum of 2 weeks (18 days) was required for proper peel colour development. Flesh colour development required a smaller pore area regardless of the storage duration. At 13°C, colour development in all packages was retarded and a satisfactory taste would develop only when the fruits were allowed to ripen at 20°C or higher. Peel colour development was more sensitive to O2 stress than flesh colour development. The rate of colour development of both peel and flesh was linearly related to the logarithm of TPA at all storage temperatures.