Vitamin C and carotenoids in organic and conventional fruits grown in Brazil |
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| Authors: | Pollyanna C. Cardoso,Ana Paula B. Tomazini,Paulo C. Stringheta,Sô nia M.R. Ribeiro,Helena M. Pinheiro-Sant&rsquo Ana |
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| Affiliation: | 1. Curso de Nutrição, Universidade Federal do Espírito Santo, Alto Universitário, 29500-000 Alegre, Espírito Santo, Brazil;2. Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Campus Universitário, 36571-000 Viçosa, Minas Gerais, Brazil;3. Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa, Campus Universitário, 36571-000 Viçosa, Minas Gerais, Brazil |
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| Abstract: | This study compared the concentration of vitamin C (ascorbic acid, AA, and dehydroascorbic acid, DHA) and carotenoids (lycopene and β-carotene) between three fruits produced by organic and conventional farming. Vitamin C and carotenoids were analysed by high-performance liquid chromatography. The Student t-test (α = 5%) was applied to determine differences between the organic and conventional production systems. AA content was significantly higher in organic acerola (4023.39 mg/100 g) compared to its conventional production (2294.53 mg/100 g). Conversely, AA content was significantly higher in conventional strawberries (42.45 mg/100 g) than the organic ones (30.74 mg/100 g). The conventional production also showed significantly higher contents of DHA (persimmon: 7.50 mg/100 g vs. 0.96 mg/100 g) and β-carotene (acerola: 6130.24 μg/100 g vs. 2486.38 μg/100 g) than the organic fruits. Lycopene was only detected in persimmons, but no significant difference was observed between farming systems. There was no evidence of the nutritional superiority of the organically grown fruits. |
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| Keywords: | Organic farming Conventional farming Fruit culture Ascorbic acid Dehydroascorbic acid Provitamin A |
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