To evaluate the phytochemical profile as well as in vitro antioxidant, iron-chelating, and anti-glucosidase activities of Typha domingensis
Total polyphenols, flavonoids, hydroxycinnamic acids, and pro-anthocyanidins in the respective aqueous extracts of male and female flowers, and fruit of T. domingensis
were determined by established procedures. Antioxidant activity was evaluated by superoxide anion radical and nitric oxide scavenging assays. Iron chelating activity was assessed using a ferrozine-based assay. Anti-glucosidase activity was determined using 4-nitrophenyl α-D-glucopyranoside as a substrate.
Phenolic contents decreased in the following order: fruit > female flower > male flower. Superoxide scavenging half-maximal effective concentration (EC50
) of fruit, female flower and male flower extracts was 3.5, 4.8, and 28.2 mg dry matter (DM)/ml, respectively, while nitric oxide scavenging EC50
of fruit, female flower and male flower extracts was 0.16, 0.65, and 0.95 mg DM/ml, respectively. On the other hand, iron chelating EC50
of female flower, male flower and fruit extracts was 4.86, 6.43, and 10.88 mg DM/ml, respectively. Only the fruit and female flower extracts exhibited anti-glucosidase activity, with EC50
of 0.75 and 5.07 mg DM/ml, respectively.
The fruit and female flower extracts of T. domingensis
are promising sources of natural antioxidants, iron chelators, and glucosidase inhibitors.