01848nam a22001817a 4500 OSt 20250321154103.0 250321b |||||||| |||| 00| 0 eng d NVSU Amansec, Jayson V. Antibacterial activity of ethanol extract of betel (piper betle) leaf extract and tsaang gubat (ehretia microphylla) leaf extract against extended spectrum beta lactamase klebsiella pneunomaniae and methicillin-resistant staphylococcus aureus (MRSA)/ Jayson V. Amansec Bayombong: Nueva Vizcaya State University, 2018. xiv, 43 leaves : illustrations, photos ; 28 cm. This study was conducted to compare the efficacy of different concentrations of Piper betle leaf extract (PBLE), and "Tsaang Gubat" leaf extract (TGLE) against Methicillin-Resistant Staphylococcus aureus and Extended Spectrum Beta Lactamase Klebsiella pneumomoniae and compare them against cefotaxime and chloramphenicol. The study was laid out following the completely randomized design (CRD) with the following treatments T1 water (negative control), T2 Control antibiotics (cefotaxime and chloramphenicol), T3 -25% PBLE, T4-50% PBLE, T5-75% PBLE, 16-25% TGLE, T7-50% TGLE, and T8 75% TGLE Treatment 3-25% PBLE, treatment 4-50% PBLE, and treatment 5-75% PBLE respectively were moderately effective against Methicillin-Resistant Staphylococcus aureus (MRSA) and Extended Spectrum Beta Lactamase (ESBL) K. pneumoniae. While treatments 6-25% TGLE, treatment 7-50% TGLE, and treatment 8-75% TGLE were not effective in controlling both test bacteria Both plant extracts were not as effective in comparison to the highly effective cefotaxime and chloramphenicol. Thesis (Doctor of Veterinary Medicine) includes appendices and bibliographical references. ddc U 0 368 368 0 0 ddc 0 0 NVSUBAY NVSUBAY GR 2025-03-21 Donation 0 U (DVM) AM484a 2018 U1221 2025-03-21 15:41:49 2025-03-21 U