Advisor(s)
Abstract(s)
Different external factors influence the chemical characteristics of natural products, varying
according to the geographic origin. The present study determined the nutritional and chemical
composition of Hibiscus sabdariffa L. dried calyces (Guinea-Bissauan origin), as well as the
phenolic composition, antioxidant, anti-inflammatory, cytotoxicity and antimicrobial activity
of its infusion and hydroethanolic extracts. Among the chemical composition, glucose and
quinic acid showed the major concentration for sugars and organic acids, respectively.
Palmitic acid and α-tocopherol were the most abundant lipophilic compounds. The individual
phenolic compounds were analysed through HPLC-DAD-ESI/MS. Thirteen compounds were
identified in the hydroethanolic extract, while twelve were identified in the infusion, being 3-
O-caffeoylquinic acid the major non-anthocyanin compound. Three anthocyanins were
identified, being delphinidin-3-O-sambubioside the most abundant. Both extracts showed
promising results in all the bioactive assays. This study exhibited beneficial properties of H.
sabdariffa and also emphasized the potential applications of this plant in different industrial
sectors.
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Pedagogical Context
Citation
Jabeur, Inès; Pereira, Eliana; Caleja, Cristina; Calhelha, Ricardo C.; Soković, Marina; Catarino, Luís; Barros, Lillian; Ferreira, Isabel C.F.R. (2019). Exploring the chemical and bioactive properties of: Hibiscus sabdariffa L. calyces from Guinea-Bissau (West Africa). Food and Function. ISSN 2042-6496. 10, p. 2234-2243