Authors: Marcia Da Silva Pinto Franco Maria Lajolo Maria Ines Genovese
Publish Date: 2007/08/15
Volume: 62, Issue: 3, Pages: 127-131
Abstract
Strawberries represent the main source of ellagic acid derivatives in the Brazilian diet They are also good sources of flavonoids mainly anthocyanins and phenolic acids to which many beneficial effects have been attributed However as the fruit is not available all the year the objective of this work was to determine whether the jams could also represent a good source of bioactive compounds In the current study five different commercially available strawberry jams were characterized in relation to flavonoids total phenolics free and total ellagic acid contents and antioxidant capacity Anthocyanins were detected only in two jams at very low content Kaempferol glycosides were the main flavonoids present from 038 to 105 mg/100 g fresh weight FW while quercetin glycosides were present in the range 014–120 mg/100 g FW Free and total ellagic acid content ranged from 04 to 29 mg/100 g FW and from 170 to 295 mg/100 g FW respectively Total phenolics varied from 58 to 136 mg/100 g FW and the antioxidant capacity from 055 to 076 μmol BHT Butylhydroxytoluene equivalents/g FW Overall results indicated that jams can also represent a good source of antioxidant compounds although compared to the fruit important losses seem to occur
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