Total phenolics, flavonoids, tannins and antioxidant activity of lima beans conserved in a Brazilian Genebank

Ciência Rural

Tânia Da Silveira Agostini-costa¹  Ana Flávia Pádua Teodoro¹  Rosa De Belem Das Neves Alves¹  Leandro Ribeiro Braga¹  Ieler Ferreira Ribeiro¹  Joseane Padilha Silva¹  Luciane Gomes Quintana¹  Marília Lobo Burle¹ 

关键词: Phaseolus lunatus;    genetic resources;    germplasm collection;    Leguminosae;    polyphenols;    Phaseolus lunatus;    recursos genéticos;    coleção de germoplasma;    Leguminosae;    polifenóis;   

DOI  :  10.1590/0103-8478cr20140030

来源: SciELO

【 摘 要 】

The objective of this study was to characterize for the first time polyphenols and DPPH (2-diphenyl-1-picryhydrazyl radical) antioxidant activity in commonly cultivated accessions of Phaseolus lunatus from an ex situ germplasm collection maintained by Embrapa, in Brazil. Furthermore, the study aimed to detect changes in total polyphenols, total flavonoids and condensed tannin for the same accessions after regeneration in a greenhouse. The results showed the diversity of the lima bean collection for phenolic compounds, which were strongly correlated with antioxidant activity. Lima beans accessions with the highest polyphenols and antioxidant activity were those with colored seeds. Conservation through cold storage of P. lunatus seeds in a cold chamber in the germplasm collection did not necessarily affect phenolic compounds. Variations observed in values after regeneration seeds may be mainly results of biotic and abiotic factors, including not only cultivar, but also environmental conditions. This study suggests that polyphenols in the lima beans present antioxidant activity, with possible beneficial effects for human health. It was expected that the potential of this tasty legume can be also used as a functional food crop and/or as a new ingredient in gastronomy.

【 授权许可】

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