



- Công bố khoa học và công nghệ Việt Nam
Dược liệu học; Cây thuốc; Con thuốc; Thuốc Nam, thuốc dân tộc
Lý Hồng Hương Hà, Trần Thị Thu Hằng, Võ Thị Bích Ngọc
Khảo sát thành phần hóa học và hoạt tính chống oxy hóa của lá vối (cleistocalyx operculatus roxb.), myrtaceae
PRELIMINARY PHYTOCHEMICAL SCREENING, ANTIOXIDANT ACTIVITY OF THE LEAF EXTRACT FROM (CLEISTOCALYX OPERCULATUS ROXB.), MYRTACEAE
Y Dược học Cần Thơ
2021
41
209-215
Materials and methods: The leaves of Cleistocalyx operculatus were analyzed phytochemical composition by the Ciulei method. Dried and ground to coarse powders, extracted with ethanol 70%, partitioned with increasing polar solvents (n- hexane, chloroform, ethyl acetate) to obtain extract and its fractions. The antioxidant activity was evaluated by DPPH scavenging assay.
Results: The Cleistocalyx operculatus leaves contain flavonoids, polyphenols, essential oils, triterpenoids, polyuronics, phenolic acids, carotenoids. All of the extracts exhibited high antioxidant activity. Among them ethyl acetate fraction possessed higher levels of activity (82.05%).
Conclusion: The leaf extracts of Cleistocalyx operculatus contain flavonoids, polyphenols, essential oils, triterpenoids, polyuronics, phenolic acids, carotenoids. All extracts, especially ethyl acetate extract, showed an antioxidant effect on the DPPH method.
TTKHCNQG,, CVv 482