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Nguyen Thi Nga, Ngo Thi Sa Ly, Vu Thi Hai Yen, Huynh Thi Thu Thao, Le Quynh Loan, Nguyen Hoang Dung, Nguyễn Hoàng Dũng(1)

PHYTOCHEMICALS AND ANTIOXIDANT ACTIVITIES OF METHANOLIC EXTRACT FROM Callistemon citrinus LEAVES

Tạp chí Khoa học - Trường Đại học Sư phạm TP Hồ Chí Minh

2022

10

1631

Callistemon citrinus is an evergreen shrub commonly used as an ornamental plant; espescially, it is used as a source of medicinal herbs in folk medicine based on its pharmacological properties. This study was performed to screening of phytochemicals and antioxidant activity of C. citrinus leaf methanolic extract. The results indicated that C. citrinus leaf extracts showed the presence of carbohydrates, tannins, saponins, flavonoids, quinones, terpenoids, phenolics, and steroids; in which total phenolic compounds content is 316.36 mg of GAE/g. In the antioxidant activity evaluation, C. citrinus leaf extracts exhibited strong both DPPH and ABTS scavenging activity, with IC50 value of 24.50 μg/mL and 46.64 μg/mL, respectively. It can be concluded that C. citrinus leaves have a remakable bioactivity, could be used as a potential candidate for the development of pharmaceutical and cosmetic purposes.

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