Title

Screening of endemic orchids for antimicrobial activities

Date of Publication

1998

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Biology

College

College of Science

Department/Unit

Biology

Abstract/Summary

Crude extracts of roots of Vanda sanderiana, Vanda luzonica, Trichoglottis philippinensis and Dendrobium sanderae were screened for the presence of antimicrobial activities. The extracts were prepared using distilled water, 95% methanol and 95% ethanol as solvents. The modified Kirby Bauer Disc Agar diffusion technique was employed in the antimicrobial assay. Clinical isolates of Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Candida albicans were used as test microorganisms. Three trials were done in the study. The crude methanol and ethanol root extract of Vanda luzonica and Vanda sanderiana inhibited the growth of S. aureus. Extracts from other orchids showed inhibitory effect on some test microorganisms. Nonetheless, variation of results among trials was observed. Such observation may be due to variations in the orchid species used.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU08403

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

42 leaves

Keywords

Microbial sensitivity tests; Extracts; Orchids; Microbiology--Technique; Medicinal plants; Useful; Plants

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