O uso de flores comestíveis ganha destaque, dentre os alimentos funcionais, devido à presença de compostos bioativos, que são capazes de neutralizar os radicais livres e contribuir para uma alimentação saudável e equilibrada. O objetivo do estudo foi avaliar o perfil de compostos bioativos em flores comestíveis de cinco espécies de plantas, sendo quatro consideradas não convencionais. Avaliou-se os teores de carotenoides, compostos fenólicos, flavonoides e antocianinas em couve-flor roxa e couve-flor verde (convencionais), e flores de ipê-amarelo, amor-perfeito, capuchinha (vermelha e laranja) e ora-pro-nobis, consideradas plantas alimentícias não convencionais (PANC). As variáveis foram submetidas a análise de variância, em delineamento inteiramente casualizado, com três repetições, seguido do teste de Tukey, ao nível de 5% de significância. As flores de ipê-amarelo apresentaram maiores conteúdos de carotenoides totais (1.443,3 µg.100 g-1). As flores de amor-perfeito e capuchinha-laranja apresentaram os maiores teores de compostos fenólicos (2,9 e 3,2 g EAG.100 g-1), de flavonoides (294,2 e 106,4 mg.100g-1) e de antocianinas (45,1 e 58,9 mg.100g-1). Foram detectadas as presenças de compostos bioativos dos grupos dos carotenoides, dos flavonoides e das antocianinas e em todas as flores comestíveis avaliadas. As flores de ora-pro-nobis e de couve flor verde, foram as que apresentaram os menores conteúdos dos compostos bioativos.
Garden pansy is a versatile gardening plant -it produces beautiful colorful edible-flowers with high value in gourmet cuisine. The use of irrigation and biotechnology in garden pansy cultivation can provide gains in flower productivity and nutritional value. The goal of this study was to evaluate the growth and edible flower production in garden pansy plants, submitted to different levels of irrigation and mycorrhizal inoculation. The experiment was conducted in randomized blocks in the 2 x 5 factorial design, with the presence and absence of mycorrhizal inoculation in combination with 5 levels of irrigation with 6 replicates, in a greenhouse. There was no significant interaction between the factors mycorrhizal inoculation and irrigation levels by the F test. Under the tested conditions, the mycorrhizal inoculation was unable to provide significant changes in the growth, development and flowering of garden pansy plants. It was concluded that no symbiotic efficiency was pointed out between the mycorrhizal fungus used and garden pansy plants. The best growth and yield results for cultivating and producing edible flowers of garden pansy were obtained at the 100% replenishment level of water evaporation.
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