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Publication Type
Conference Proceedings
Author, Analytic
Emanuel, M.; Benkeblia, N.
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Paper/Section Title
Variation of Total and Reducing Sugars, Total Phenols and Chlorophylls in Sour sop (Annona muricata) during on tree ripening stages.
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Proceedings Title
III International Conference on Postharvest and Quality Management of Horticultural Products of Interest for Tropical Regions
Date of Meeting
July 1-5
Place of Meeting
Port of Spain, Trinidad and Tobago
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Date of Publication
2013
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Notes
Poster
Abstract
The changes of total and reducing sugars, total phenolics, and chlorophylls in soursop (Annona muricata) fruits during on tree ripening were assessed. Three ripening stages were considered. Reducing sugars increased progressively during the three stages in the pulp of the fruit, and varied from 8.54 to 26.66 mg/g fresh weight. In the skin, the reducing sugars increased from 9.26 in stage 1 to 19.32 mg/g fresh weight in stage 2; then decreased slightly to 17.32 mg/g fresh weight in stage 3. For total sugars, the concentration increased progressively and varied from 17.68 mg/g fresh weight at stage 1 to 42.17 mg/g fresh weight at stage 3. Total phenolics increased significantly in the skin and pulp of the fruit. Total phenolics varied from 9.23 to 18.78 g/g fresh weight in the skin, and from 4.93 to 13.57 g/g fresh weight from stage 1 to stage 3, respectively. However, chlorophylls in the skin slightly decreased then increased; varying from 4.24 g/g fresh weight in stage 1 to 3.42 g/g fresh weight in stage 2 to 7.37 g/g fresh weight in stage 3. In the pulp, chlorophylls increased then decreased; varying from 10.43 g/g fresh weight in stage 1 to 15.36 g/g fresh weight in stage 2 to 13.53 g/g fresh weight in stage 3....
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