Journal
FOOD CHEMISTRY
Volume 179, Issue -, Pages 6-14Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2015.01.123
Keywords
Viola tricolor; HPLC-DAD-ESI/MS; Phenolic compounds; Antioxidant activity; Linear discriminant analysis
Funding
- Fundacao para a Ciencia e a Tecnologia (FCT, Portugal) [PEst-OE/AGR/UI0690/2011, SFRH/BPD/72802/2010]
- Spanish Government through the Consolider-Ingenio Programme (FUN-C-FOOD) [CSD2007-00063]
- CNEN
- CAPES
- CNPq
- IPEN-CNEN/SP
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/72802/2010] Funding Source: FCT
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Edible flowers are used in food preparations, being also recognized for their beneficial effects on human health. Nevertheless, these species are highly perishable, and irradiation treatment might be applied to ensure food quality and increase their shelf life. Viola tricolor L. is a typical edible flower, with multiple applications and biological properties, mainly provided by the flavonoid content. In the present work, the phenolic compounds were analyzed by HPLC-DAD-ESI/MS, and the antioxidant activity was evaluated using biochemical assays. Linear discriminant analyses (LDA) were performed in order to compare the results obtained with flowers submitted to different irradiation doses and technologies (cobalt-60 and electron-beam). In general, irradiated samples (mostly with 1 kGy) showed the highest phenolic content and antioxidant activity. Furthermore, the significant differences observed in the LDA allow determination of which dose and/or technology is suitable to obtain flowers with higher antioxidant potential. (C) 2015 Elsevier Ltd. All rights reserved.
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