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Biochemical Characterization of Dovyalis hebecarpa Fruits: A Source of Anthocyanins with High Antioxidant Capacity

Bochi, Vivian Caetano, Barcia, Milene Teixeira, Rodrigues, Daniele, Godoy, Helena Teixeira
Journal of food science 2015 v.80 no.10 pp. C2127
Dovyalis, anthocyanins, antioxidant activity, diet, free radicals, fruits, humans, nutrient content, proximate composition, pulp, rain, small fruits, temperature, Brazil, Sri Lanka
Dovyalis hebecarpa, which is also known as the Ceylon gooseberry, is an attractive exotic purple berry that is produced in the southwest of Brazil with high yields. Current literature lacks information about the nutritional composition and antioxidant capacity of this fruit. As such, this work aimed to evaluate and compare the proximate composition, phytochemical content, and antioxidant capacity of D. hebecarpa over two seasons through the application of a range of different methods, including FRAP, ABTS, and ORAC assays. The proximate composition and biometric parameters were monitored for quality purposes. The results significantly changed between seasons in accordance with variations in rain incidence and average temperatures. The Ceylon gooseberry contained a similar or higher content of anthocyanins (ACY) than other berries commonly consumed in human diet. These ACY were identified at higher levels in the fruit's skin (284 to 351 mg of cyanidin‐3‐glucoside equivalents/100 g of fresh weight [FW]) than in its pulp (49 to 69 mg/100 g of FW). The use of an ORAC assay identified higher antioxidant activity (145 μmol of Trolox equivalents [TE]/g in the skins and 179 μmol of TE/g in the pulp on a FW basis) than all other methods used to determine antioxidant activity. Thus, D. hebecarpa is a rich source of ACY that demonstrates high antioxidant activity against the peroxyl radicals formed in ORAC assay conditions.