Journal
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
Volume 22, Issue 5, Pages 381-387Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jfca.2008.06.008
Keywords
Solanum quitoense; Solanum betaceum; Rubus glaucus; Rubus adenotrichus; Phenolic compounds; Carotenoids; HPLC-MS; ORAC; Food composition; Food analysis
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Major compounds (i.e. phenolic compounds and carotenoids) were analysed in the extracts of the edible part of three tropical fruits: the Andean blackberry, the naranjilla and the tree tomato. Ellagitannins and anthocyanins were predominant in blackberries and phenolic composition can be used to differentiate the two species studied. Similar phenolic composition occurred in red and yellow tree tomato except for anthocyanins which were absent in the yellow tree tomato. Phenolic acids were detected in the naranjilla pulp. Carotenoids were analysed in the fruits. The composition in carotenoids was similar in the two varieties of tree tomato and their vitamin A activity was calculated. Carotenol fatty acid esters were predominant. P-Cryptoxanthin esters and P-carotene were the major carotenoids. The carotenoid content was high compared to literature data, providing an important high vitamin A activity. In blackberries and naranjilla, this class of compounds was found only at trace level. Finally, ORAC values were estimated in different solvent extracts and results were compared with published data in common fruits. (C) 2009 Published by Elsevier Inc.
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