Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2027
Título: Strawberries from integrated pest management and organic farming: phenolic composition and antioxidant properties
Autor: Fernandes, Virgínia F.
Domingues, Valentina F.
Freitas, Victor
Delerue-Matos, Cristina
Mateus, Nuno
Palavras-chave: Strawberries
Organic farming
Integrated pest management
Phenolic content
Data: 2012
Editora: Elsevier
Relatório da Série N.º: Food Chemistry; Vol. 134; Issue 4
Resumo: Consumer awareness, pesticide and fertilizer contaminations and environmental concerns have resulted in significant demand for organically grown farm produce. Consumption of berries has become popular among health-conscious consumers due to the high levels of valuable antioxidants, such as anthocyanins and other phenolic compounds. The present study evaluated the influence that organic farming (OF) and integrated pest management (IPM) practise exert on the total phenolic content in 22 strawberry samples from four varieties. Postharvest performance of OF and IPM strawberries grown in the same area in the centre of Portugal and harvested at the same maturity stage were compared. Chemical profiles (phenolic compounds) were determined with the aid of HPLC-DAD/MS. Total phenolic content was higher for OF strawberry extracts. This study showed that the main differences in bioactive phytochemicals between organically and IPM grown strawberries concerned their anthocyanin levels. Organically grown strawberries were significantly higher in antioxidant activity than were the IPM strawberries, as measured by DPPH and FRAP assays.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2027
ISSN: 0308-8146
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0308814612006334
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