Nutritional and functional compounds in dahlia flowers and roots

Abstract The use of unconventional edible plants in human food has grown more widespread in recent years, driven mainly by gourmet dishes. Evidence of the food properties of these species is still scarce. Aiming to obtain more in-depth knowledge of dahlia plants, this study aimed to evaluate the nut...

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Veröffentlicht in:Brazilian Journal of Food Technology 2022, Vol.25, p.1-13
Hauptverfasser: Costa, Paula Aparecida, Souza, Douglas Correa de, Ossani, Paulo César, Mendes, Marcelo Henrique Avelar, Silva, Maria Ligia de Souza, Carvalho, Elisângela Elena Nunes, Resende, Luciane Vilela
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Sprache:eng
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Zusammenfassung:Abstract The use of unconventional edible plants in human food has grown more widespread in recent years, driven mainly by gourmet dishes. Evidence of the food properties of these species is still scarce. Aiming to obtain more in-depth knowledge of dahlia plants, this study aimed to evaluate the nutritional, bioactive, and antinutritional properties of the edible parts of purple dahlia (tuberous root and flower) to elucidate their value and safety as foods. The percent composition, caloric value, pH, Total Soluble Solids (TSS), Total Titratable Acidity (TTA), ratio of TSS to TTA, anthocyanins, carotenoids, vitamin C, total phenolics, tannins, nitrates, and minerals of the roots and flowers were analyzed. The inulin content in the root and the color of the flower were also evaluated. The results were reported as mean and standard deviation, and exploratory factor analysis was performed. Both parts of the dahlia had constituents that contribute to a good diet at concentrations like those in conventional vegetables, whereas the antinutritional components were also compatible with those of commonly consumed foods, with acceptable dietary values. Thus, it is evident that purple dahlia flowers and roots have potential for use in human food and can be considered good options to improve and diversify a healthy diet. Resumo A utilização de plantas alimentícias não convencionais na alimentação humana tem crescido nos últimos anos, impulsionada principalmente pelos pratos gourmet. Entretanto, estudos comprovando as propriedades alimentícias destas espécies ainda são incipientes. Sendo assim, objetivou-se com este trabalho avaliar as propriedades nutricionais, bioativas e antinutricionais das partes comestíveis da dália roxa (raiz tuberosa e flor), para elucidar seu potencial e a segurança no seu consumo. Foram, dessa forma, analisados: composição centesimal, valor calórico, pH, sólidos solúveis totais, acidez total titulável, ratio, antocianinas, carotenoides, vitamina C, fenólicos totais, taninos, nitratos e minerais para a raiz e a flor, além da avaliação do teor de inulina na raiz. Os resultados foram analisados pelas médias e desvio padrão, e foi realizada a análise fatorial exploratória. Ambas as partes avaliadas possuem constituintes requeridos para uma boa alimentação em concentrações semelhantes às das hortaliças convencionais, enquanto os componentes antinutricionais também são compatíveis aos de alimentos comumente consumidos, com valores aceitáveis na alim
ISSN:1981-6723
1516-7275
1981-6723
DOI:10.1590/1981-6723.02922