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Title: Phytochemical screening and Antibacterial activity of selected medicinal plants of Bayabas, Sablan, Benguet Province, Cordillera Administrative Region, Luzon, Philippines
Authors: Balangcod, Teodora D
Vallejo, Vilma L.
Patacsil, Melba
Apostol, Orlando
Laruan, Lianne Marie Victoria A.
Manuel, Jayjay
Cortez, Sonny
Gutierrez, Rosemary M.
Keywords: Bayabas;Sablan;Ethnobotany;Ibaloi tribe;Plant-based medicine;Secondary metabolites;Traditional knowledge
Issue Date: Oct-2012
Publisher: NISCAIR-CSIR, India
IPC Code: Int. Cl.8: C01, C07, C08, A61K 36/00
Abstract: The traditional knowledge on medicinal plants, when confirmed by antimicrobial and phytochemical studies, can lead to the development of drugs and plant-based medicine. Twenty selected plants that are used for the treatment of various ailments by the Ibaloi tribe in Bayabas, Sablan were tested for antibacterial activity and analysed for phytochemical constituents. A modified Kirby-Bauer method was used to test the antibacterial potential of the plants against gram-positive and gram-negative bacteria such as Escherichia coli, Salmonella typhimurium, Staphylococcus aureus, and Pseudomonas aeruginosa. Results showed that out of the twenty plant samples, seven showed positive results in varying degrees. Methanol extracts from the same twenty plants were analysed for their secondary metabolites using standard methods. The extracts were macerated with 95% methanol and were tested for the presence or absence of saponins, alkaloids, glycosides, anthraquinones, steroids, flavonoids and tannins. Bidens pilosa gave positive results for all secondary metabolites while the other plants contained one or two metabolites. The presence of the secondary metabolites can contribute to the antibacterial potential of the plants. The information derived herein provides scientific basis for the ethno-botanical knowledge of the local community. The phytochemicals of the plants when developed further, can offer a less-expensive treatment for various ailments.
Page(s): 580-585
ISSN: 0975-1068 (Online); 0972-5938 (Print)
Appears in Collections:IJTK Vol.11(4) [October 2012]

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