Kan plianplaeng ongprakop thang khemi khong nua thurian phan chanee lae phan monthong phai lang kan kepkieo.
1993
Sudarat Sutthaphan
Chemical composition in the pulp of 'Chanee' durian harvested at 103 and 110 days and 'Monthong' durian harvested 118 and 125 days after anthesis was analyzed. The contents of most constituents were higher in the former than in the latter, and in more mature fruit than in less mature fruit. The 103- and 110-day-old fruits of 'Chanee' durian had 233 and 245 I.U. beta-carotene (fresh weight basis) while the 118- and 125-day-old fruits bad 24 and 41 I.U. bata-carotene. When held at 20 deg C or at ambient temperature (30+-2 deg C), changes in chemical composition of 'Chanee' durian occurred at a more rapid rate than those of 'Monthong'. Fairly marked changes were noted on day 3 for the former and day 6 for the latter. Moisture, soluble solids, total sugars, reducing sugars and beta-carotene contents increased, but starch content decreased with time in storage. The lipid content of 'Chanee' fruit increased whereas that of 'monthong' remained the same. Harvesting time had no significant effect on chemical composition of 'Chanee' cultivar. In contrast, more mature fruits of 'Monthong' cultivar showed dramatic changes which occurred more rapidly than less mature fruits. Chemical composition changes in the pulp of both cultivars took place normally at both storage temperatures. However, the changes were enhanced at ambient temperature.
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