Antibacterial activity, antioxidant property and photochemical analysis of crude ethanolic extract from Dalanghita (Citrus nobilis) peels
| dc.contributor.advisor | Ortillo, Danilo O. | |
| dc.contributor.author | Aglobo, Jastine S. | |
| dc.contributor.chair | Janagap, Steve P. | |
| dc.contributor.committeemember | Catalan, Christian A. | |
| dc.contributor.committeemember | Abetria, Pauline Grace R. | |
| dc.date.accessioned | 2025-08-05T08:00:25Z | |
| dc.date.issued | 2015-05 | |
| dc.description.abstract | The crude ethanolic extract of Dalanghita <i>(Citrus nobilis)</i> was studied for their antibacterial activity, antioxidant and phytochemical properties. The DPPH free radical scavenging assay of extracts with varying concentrations showed strong antioxidant activity with a maximum % inhibition of 92.30 at 80.70 ug/mL concentration. The IC50 was calculated to be 26.26 pg/mL against 12.48 ug/mL for Ascorbic acid, the positive control. The antibacterial activity of the extract was determined against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> by measuring the mean zones of inhibition using the paper disc diffusion assay at different concentration of crude ethanolic extract. The crude ethanol extract at 100% concentration yielded the highest inhibition for <i>E. coli</i> at 21.50±0.50 mm which is comparable to tetracycline, the positive control. The presence of phytochemicals in the extract were evaluated and the phytochemicals identified were: alkaloids, flavonoids, saponins, steroids, tannins, and terpenes. | |
| dc.format.extent | ix, 50 p. | |
| dc.identifier.citation | Aglobo, J. S. (2015). Antibacterial activity, antioxidant property and photochemical analysis of crude ethanolic extract from Dalanghita (Citrus nobilis) peels [Undergraduate thesis, University of the Philippines Visayas]. UPV Institutional Repository. https://hdl.handle.net/20.500.14583/241 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14583/241 | |
| dc.publisher | Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas | |
| dc.subject | Crude | |
| dc.subject | Ethanol | |
| dc.subject | Dalanghita | |
| dc.subject | Citrus nobilis | |
| dc.subject | Phytochemicals | |
| dc.subject.agrovoc | crude | |
| dc.subject.agrovoc | ethanol | |
| dc.subject.agrovoc | Citrus | |
| dc.subject.agrovoc | phytochemicals | |
| dc.subject.lcc | LG 993.5 2015 C5 A36 | |
| dc.subject.sdg | SDG 3 - Good health and well-being | |
| dc.subject.sdg | SDG 15 - Life on land | |
| dc.subject.sdg | SDG 12 - Responsible consumption and production | |
| dc.title | Antibacterial activity, antioxidant property and photochemical analysis of crude ethanolic extract from Dalanghita (Citrus nobilis) peels | |
| dc.type | Thesis | |
| thesis.degree.department | College of Arts and Sciences | |
| thesis.degree.grantor | University of the Philippines Visayas | |
| thesis.degree.level | Undergradaute | |
| thesis.degree.name | Bachelor of Science in Chemistry |