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- Title
Biological analysis of Ginkgo biloba extract.
- Authors
Dumitru, Dana-Victoria; Câmpean, Ramona; Olah, Neli-Kinga; Carpa, Rahela
- Abstract
Ginkgo biloba belongs to the Ginkgoaceae family and contains a large variety of compounds. The genetic diversity, tree age and soil type influences the yield of chemical compounds found in different parts of the plant. This study performs phytochemical and antibacterial analysis of ethanolic extracts from Ginkgo biloba. The leaves have been used in order to obtain Ginkgo biloba tincture. They were dryed in the shadow. The quality index was 1:5, the concentration of ethanol being 70 %. Based on this tincture a qualitative and quantitative phytochemical analysis was performed through thin layer chromatography and high performance liquid chromatography. By thin-layer chromatography the qualitative flavonoids, such as quercetin and rutin from Ginkgo biloba extract, have been identified. By high performance liquid chromatography with reversed phase the quercetin quantity from Ginkgo biloba leaves was assessed and that is 1.34 mg/mL. The plant extracts were tested on Gram negative bacteria Escherichia coli and on Gram positive bacteria Staphylococcus aureus. The extracts presented an inhibition about 17.5 mm on S. aureus and about 10.5 mm on E. coli. The ethanolic extracts exhibited a stronger activity versus S. aureus strain, which demonstrates that the quercetin extracts can be used in treatment of different infections caused by these bacteria.
- Subjects
PLANT extracts; CHEMICAL composition of plants; CULTIVARS; GINKGO; PLANT genetics
- Publication
Extreme Life, Biospeology & Astrobiology, 2016, Vol 8, Issue 2, p34
- ISSN
2066-7671
- Publication type
Article