Model for evaluation of maturity index of durian fruit (Durio ziethinus Murray cv. Monthong).
Kalayanamitra K., Yantarasri T., Sornsrivichai J.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.90
2004
บทคัดย่อ
Model for evaluation of maturity index of durian fruit (Durio ziethinus Murray cv. Monthong).
Durian is one of the most popular and famous seasonal fruits in Southeast Asia. However, the fruit has more problems on maturity detection than any other fruits.A major problem in exporting Thai durian is that a large percentage is immature.Reliable maturity indices have not been fully developed.Sensory tasting of unripe durian pulp, panelist could significantly ranking the stages of maturity and correlated well with the ranking of the harvesters using the external characteristics of the fruit.Panelists and harvester ranking the maturity level into 5 levels from level of 50%, which is the immature fruit to 90%, which is fully mature.Objectively detection of maturity index was developed through assessment and measurement of changing patterns of physiochemical at different stages of maturity from three different growing locations.It was found that dry matter content was significantly correlated to the maturity level and could separated the critical stage of immature fruit of 60% level from the minimum acceptable mature stage of 70%.Dry matter content could provide a useful index of maturity.However dry matter values show differed with growing location and harvesting year.Therefore, appropriate maturity indices are developed from mathematical model from combination of various indices and external factors.