tailieunhanh - Phyto chemical analysis of Ardisia silvestris leaf extracts and their antioxidant and antibacterial activities

The phytochemical analysis and antibacterial and antioxidant activity of Ardisia silvestris extracts were carried out. The bioactive compounds of Ardisia silvestris leaves were extracted with petroleum ether, ethyl acetate, ethanol and water by immersion and microwave method. The DPPH method was used to determine the antioxidant activity of Ardisia silvestris extracts. | 28 Trường Đại học Nông Lâm TP. Hồ Chí Minh Phytochemical analysis of Ardisia silvestris leaf extracts and their antioxidant and antibacterial activities Biet V. Huynh1 Phuong N. T. Nguyen2 Nga T. T. Nguyen3 4 Toan Q. Truong1 amp Hong C. V. Phung1 1 Research Institute for Biotechnology and Environment Nong Lam University Ho Chi Minh City Vietnam 2 Faculty of Applied Science Ton Duc Thang University Ho Chi Minh City Vietnam 3 Department of Biotechnology Nong Lam University Ho Chi Minh City Vietnam 4 Faculty of Agriculture Vietnam National University of Forestry Dong Nai Campus Dong Nai Vietnam ARTICLE INFO ABSTRACT Research Paper The phytochemical analysis and antibacterial and antioxidant activity of Ardisia silvestris extracts were carried out. The bioactive compounds Received December 16 2019 of Ardisia silvestris leaves were extracted with petroleum ether ethyl Revised February 10 2020 acetate ethanol and water by immersion and microwave method. The Accepted May 13 2020 DPPH method was used to determine the antioxidant activity of Ar- disia silvestris extracts. The antibacterial properties of Ardisia silvestris tested against of Staphylococcu saureus Samonella sp. and Escherichia coli were determined by using agar diffusion method. The agar diffu- sion method was used to determine the antibacterial effects of both Keywords plant extracts on the test organisms. The results showed that Ardisia silvestris leaves contained compounds such as essential oils fats alka- loids flavonoids coumarins tannins anthocyanoids carotenoids organic Antibacterial activities acids reducing agents proanthocyanidins saponins and anthraquinones. Antioxidant Ardisia silvestris leaves had a total polyphenol content of dry mat- Ardisia silvestris ter tannin of and a total flavonoid of mg g. The ethyl acetate Phytochemical analysis extract and water extract of the leaves had the antioxidant activity and were and times lower than ascorbic acid respectively. The ethyl .