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ISHS Acta Horticulturae 1210: IV Asia Symposium on Quality Management in Postharvest Systems

Physicochemical factors related to 'Monthong' durian fruit maturity

Authors:   P. Youryon, J. Rattanaphon, S. Supapvanich, M. Krairiksh
Keywords:   durian fruit, maturity, specific gravity, peduncle TSS
DOI:   10.17660/ActaHortic.2018.1210.23
Abstract:
Heterogeneous maturation of durian fruit on the market is a main problem. The aim of this work was to investigate certain factors related to the maturity of 'Monthong' durian fruit. The durian fruit at immature, onset of maturation, onset of ripening, ripe and full ripe stages were harvested. Non-destructive factors such as specific gravity and total soluble solids (TSS) content of peduncle and destructive factors such as cut-fruit visual appearance, pulp dry weight, colour, TSS content and carotenoids content were monitored. Both specific gravity and TSS content of peduncle were increased until the onset of ripening stage and then remained constant during ripening. The visual appearance showed the increase in pulp yellowness and space between pulp and peel which positively changed with the maturation increase. The pulp dry weight and b* value were increased whilst L* value was decreased as the ripening increased. The pulp TSS concentration was dramatically increased until full ripe and then remained constant. Carotenoids content of the pulp was also obviously increased from immature to the onset of ripening stage and it then remained constant. In conclusion, the decrease in specific gravity and increase in peduncle TSS concentration could be non-destructive factors indicating durian fruit ripening.

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