บทคัดย่องานวิจัย

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Changes in the activities of carbohydrate-degrading enzymes with ripening in Musa paradisiaca.

Osarose A Iyare and Blessing O Ekwukoma

Journal of the Science of Food and Agriculture. Volume 58, Issue 2, 1992. Pages 173 – 176.

1992

บทคัดย่อ

Changes in the activities of carbohydrate-degrading enzymes with ripening in Musa paradisiaca.

The activities of phosphorylase (EC 2.4.1.1), amylase (EC 3.2.1.2) and invertase (EC 3.2.1.26) were monitored in the pulp and peel of post-harvest plantain (Musa paradisiaca L) stored at 26 degrees C and at 14 degrees respectively. There was a significant increase (P < 0.01) in the activities of the three enzymes in both the pulp and peel of plantain fingers stored at 26 degrees C as ripening progressed as assessed by the unpaired t-test. The increase in amylase activity was more dramatic, thus suggesting a greater hydrolytic rather than phosphorolytic cleavage of starch. The enzyme activities in the plantain stored at 14 degrees C also increased with the postharvest storage period (P < 0.01) although the absolute values were less than those from the corresponding plantain fingers stored at 26 degrees C. The possible importance of these observations in the light of reducing the large wastage of M paradisiaca due to poor storage facilities, and thereby enhancing its shelf life and usefulness in the tropics, is discussed.