Phytochemical screening and antibacterial activity of Paraserianthes falcataria (Falcata) leaf crude extract

De Leon , Timmy D. (2014) Phytochemical screening and antibacterial activity of Paraserianthes falcataria (Falcata) leaf crude extract. Other thesis, De La Salle University-Dasmariñas.

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Abstract

The purpose of this study was to determine the phytochemical constituents and antibacterial property of the leaf crude extract from Paraserianthes falcataria. Phytochemical screening was conducted to determine the presence of alkaloids, flavonoids, polyphenols, and tannins through qualitative chemical tests. The antibacterial activity of the extract was tested against Staphylococcus aureus, Bacillus cereus, Salmonella typhi, and Escherichia coli through paper disc diffusion method. Results of phytochemical screening revealed the presence of saponins, polyphenols, and tannins. The leaf crude extract of P. falcataria displayed minimal antibacterial activity on S. aureus and B. cereus. It did not exhibit antibacterial activity against S. typhi and E. coli. The P. falcataria leaf crude extract exhibited minimal growth inhibitory activity. This means that the concentrations were low to inhibit the growth of bacteria. Though there were saponins, polyphenols, and tannins present, the low concentrations of the extract contributed to the low amount of phytochemicals that could execute its antibacterial activity.

Item Type: Thesis (Other)
Additional Information: Call Number : BIO 1349 2014
Keywords: 1. Plant extracts 2. Phytochemicals 3. Plants -- Composition. 4. Antibacterial activity.
Subjects: Q Science > QD Chemistry
Q Science > QH Natural history > QH301 Biology
Q Science > QK Botany
Users: College of Science and Computer Studies > Biological Science
Depositing User: Ivyjoy Viray
Date Deposited: 19 Jan 2015 08:39
Last Modified: 19 Jan 2015 08:39
URI: http://thesis.dlsud.edu.ph/id/eprint/374

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