41The present study aimed to identify and compare the content of tocopherols, ascorbic acid and 42 carotenoids in yellow passion fruit grown under different cultivation systems. The passion fruits were 43 obtained from two systems: an organic pesticide-free system and a conventional system. Samples from 44 both systems were obtained in 2008 from the same private property in Florianópolis, SC/Brazil. The 45 tocopherols, carotenoids, and ascorbic acid analysis were carried out using high-performance liquid 46 chromatography (HPLC). The results showed that the passion fruit grown under the organic cultivation 47 approach contained a higher content of tocopherols than those cultivated using conventional methods 48 (0.061 and 0.052 mg of tocopherols.100g -1 of fresh fruit, respectively). The major component in the 49 samples produced by both systems was γ-tocopherols, which were found at a concentration of 0.045 50 mg.100g -1 in the organic fruits and 0.042 mg.100g -1 in the conventional fruits. The amount of total 51 ascorbic acid was 2.3x10 2 and 1.9x10 2 mg.100g -1 in the samples from the organic and conventional 52 systems respectively. The quantification of individual carotenoids in both the organic and conventional 53 passion fruit was 13.99 mg.100g -1 and 25.10 mg.100g -1 respectively. The conventional passion fruit 54 contained double the content of the carotenoids present in the organic fruits. β-criptoxanthin was the 55 main carotenoid found in both fruits. 56 57
Hydrophilic and lipophilic extracts of ten cultivars of Highbush and Rabbiteye Brazilian blueberries (Vaccinium corymbosum L. and Vacciniumashei Reade, respectively) that are used for commercial production were analysed for antioxidant activity by the FRAP, ORAC, ABTS and β-carotene-linoleate methods. Results were correlated to the amounts of carotenoids, total phenolics and anthocyanins. Brazilian blueberries had relatively high concentration of total phenolics (1,622-3,457 mg gallic acid equivalents per 100 g DW) and total anthocyanins (140-318 mg cyanidin-3-glucoside equivalents per 100 g DW), as well as being a good source of carotenoids. There was a higher positive correlation between the amounts of these compounds and the antioxidant activity of hydrophilic compared to lipophilic extracts. There were also significant differences in the level of bioactive compounds and antioxidant activities between different cultivars, production location and year of cultivation.
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