| Summary: | To investigate the shelf life of banana ‘Mas’ (Musa acuminata Colla) using gamma rays in Malaysia. An experimental
study to investigate the shelf life of banana Mas using different doses of gamma radiation. Different doses will be given to
each group of banana Mas which are 0 (untreated control), 0.4, 0.8 and 1.2 kGy. The irradiated groups were being irradiated
by gamma radiation at the National University of Malaysia (UKM) using Gamma Cell 220 Excel Cobalt-60 source. The
observation was performed on the physical changes of the sample such as peel colour, decay rate, and physiological weight
loss. Findings have shown that the high dose of gamma radiation caused the darkening of the peel and accelerate the ripening
process depend on the varieties of the bananas. Among all, group B (0.4 kGy) has the lowest PWL (Physiological Weight
Loss) and decay rate when compared to the other groups. The result of the one-way ANOVA test on the weight loss was
not statistically significant. The dose of 0.4 kGy was the most effective one in delaying the ripening process for banana
Mas when compared to the other group samples.
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