Immunomodulatory activity and phytochemical analysis of Hibiscus sabdariffa L. flower fractions

Immunomodulators are compounds that are capable of enhancing the immune system. This research examined the immunomodulatory activity of Hibiscus sabdariffa L. flower fractions and identified the chemical compounds contained. A H. sabdariffa L. flower ethyl acetate extract was fractionated by the vacuum liquid chromatography method, yielding seven fractions: Fractions A, B, C, D, E, F, and G. Immunomodulatory activity testing was carried out by the phagocytosis method, and phytochemical analysis was conducted using liquid chromatography-mass spectroscopy. The test results showed that Fractions A, B, C, D, F, and G were significantly different from the negative control sodium carboxymethyl cellulose. Fraction A exhibited the best activity. The phytochemical analysis results showed that the H. sabdariffa L. flower fractions exhibited a number of compounds that have the potential to act as immunomodulatory active compounds.