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Nowadays, it has been of great interest to the scientific community to study the characterization of the bioactive components of Jamaica flower (Hibiscus sabdarifa L.). In this sense, Mexico has started the development of native Creole varieties of the country and there are no published studies of these varieties and the works reported are varieties of Asian and African origin. The objective of the work was to determine the content of bioactive compounds and antioxidant activity in vitro of the extracts obtained from the flower of Jamaica (Hibiscus sabdarifa) of Creole variety originated in the state of Michoacán, Mexico. The results obtained indicate that there were no statistically significant differences in the yield of the extracts under any of the experimental conditions in this study. However, the total phenolic content was found to be higher in the hydroalcoholic extract (80:20) at the two experimental temperatures (1007.6 ± 0.0 mg EAG / l and 1009.3 ± 0.0 mg EAG / L). The aqueous extract (100%) had a higher content of flavonoids (23.5 ± 0.0 mg Eq of quercetin / g), betanins (177.00 ± 0.0 mg Eq of pigment / L) and betaxanthines (131.7 ± 0.0 mg Eq of pigment / L) compared to the other extracts. The anthocyanin content was higher in the hydroalcoholic extract at 25 ° C (1.5 ± 0.0 mg Eq of cyanidine-3-glucoside / L). The antioxidant capacity measured by ABTS and DPPH resulted in a higher hydroalcoholic extract (73.62 ± 0.04 and 220.09 ± 0.05 μmol Eq of Trolox / L). The chelating activity was higher in the 100% aqueous extracts (52.05%) at a temperature of 50 ° C. In conclusion, the 100% aqueous extract at a temperature of 50 ° C obtained a higher content of flavonoids, betalains and betaxanthines and chelating activity compared to the rest of the extracts. The extract at an 80:20 ratio (water:ethanol), at a temperature of 25 ° C showed a greater amount of total phenolic and anthocyanin content, and these extracts showed a higher antioxidant activity compared to the rest of the extracts.

Cuantificación del contenido de compuestos bioactivos y actividad antioxidante in-vitro en extractos de flor de Jamaica (Hibiscus sabdariffa)