Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi

Centella asiatica (C asiatica) or locally named as 'pegaga' in Malaysia, belongs to the family Umbelliferare. It is known to have many medicinal benefits and all parts of this plant can be utilized for medicinal used. This study was conducted to determine the antimicrobial and antioxidant...

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Main Author:	Sarkawi, Zarina
Format:	Thesis
Language:	English
Published:	2015
Subjects:	Microbial ecology Bacteria
Online Access:	https://ir.uitm.edu.my/id/eprint/28051/1/TD_ZARINA%20SARKAWI%20HS%2015_5.pdf
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spelling	my-uitm-ir.280512020-01-31T08:02:33Z Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi 2015 Sarkawi, Zarina Microbial ecology Bacteria Centella asiatica (C asiatica) or locally named as 'pegaga' in Malaysia, belongs to the family Umbelliferare. It is known to have many medicinal benefits and all parts of this plant can be utilized for medicinal used. This study was conducted to determine the antimicrobial and antioxidant activities of the leaves and roots of Centella asiatica. The plant was disintegrated to two part which were leaves and roots and extracted in ethanol for antimicrobial activities against Staphylococcus allreus (ATCC 25923) and methanol extraction for antioxidant activities. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of Centella asiatica leaves and roots extract were determined by broth dilution method against Staphylococcus allreus (ATCC 25923). Antimicrobial sensitivity testing also done using five different concentration of the extract which were 500 mg/ml, 250 mg/ml, 150 mg/ml, 75 mg/ml and 37.5 mg/ml and the antioxidant activities of Casiatica leaves and roots extract were determined by DPPH radical scavenging assay. The Casiatica leaves and roots extract showed MIC and MBC value at concentration of 150 mg/m!. For antimicrobial sensitivity testing the zone of inhibition of the Casiatica leaves extract was greater than Casiatica roots extract. The leave extract gave zone of inhibition range about 10 mm to 12 mm at the concentration of 500 mg/ml and 8 mm to 10 mm at the concentration of 250 mg/m!. There were no zone of inhibition observed on the leave extract at the concentration of 150, 75, 37.5 and mg/m!. The roots extract of the Casiatica only showed the zone of inhibition at the concentration of 500 mg/ml range about 8 mm to 10 mm. There were no zone of inhibition observed on the roots extract at the concentration of 250, 150, 75 and 37.5 mg/m!. The positive control (Gentamicin 30llg) showed zone of inhibition in the range 25 to 30 mm. Percentage of inhibition of DPPH radical scavenging activity by methanolic leaves extract of Casiatica showed higher value which were 38.53% for 1.25 mg/ml, 30.35% for 2.5 mg/ml, 84.55% for 5 mg/ml, 85.16% for 10 mg/ml and 86.47% for 20 mg/ml while the methanolic roots extract of Casiatica were 10.38% for 1.25 mg/ml, 4.35% for 2.5 mg/ml, 14.52% for 5 mg/ml, 62.26% for 10 mg/ml and 79.32% for 20 mg/m!. In conclusion, the CenteUa asiatica leaves extract showed greater antimicrobial and antioxidant activities compared with the roots. In vivo study is highly recommended for further study. 2015 Thesis https://ir.uitm.edu.my/id/eprint/28051/ https://ir.uitm.edu.my/id/eprint/28051/1/TD_ZARINA%20SARKAWI%20HS%2015_5.pdf text en public degree Universiti Teknologi MARA Faculty of Health Sciences
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Microbial ecology Bacteria
spellingShingle	Microbial ecology Bacteria Sarkawi, Zarina Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi
description	Centella asiatica (C asiatica) or locally named as 'pegaga' in Malaysia, belongs to the family Umbelliferare. It is known to have many medicinal benefits and all parts of this plant can be utilized for medicinal used. This study was conducted to determine the antimicrobial and antioxidant activities of the leaves and roots of Centella asiatica. The plant was disintegrated to two part which were leaves and roots and extracted in ethanol for antimicrobial activities against Staphylococcus allreus (ATCC 25923) and methanol extraction for antioxidant activities. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of Centella asiatica leaves and roots extract were determined by broth dilution method against Staphylococcus allreus (ATCC 25923). Antimicrobial sensitivity testing also done using five different concentration of the extract which were 500 mg/ml, 250 mg/ml, 150 mg/ml, 75 mg/ml and 37.5 mg/ml and the antioxidant activities of Casiatica leaves and roots extract were determined by DPPH radical scavenging assay. The Casiatica leaves and roots extract showed MIC and MBC value at concentration of 150 mg/m!. For antimicrobial sensitivity testing the zone of inhibition of the Casiatica leaves extract was greater than Casiatica roots extract. The leave extract gave zone of inhibition range about 10 mm to 12 mm at the concentration of 500 mg/ml and 8 mm to 10 mm at the concentration of 250 mg/m!. There were no zone of inhibition observed on the leave extract at the concentration of 150, 75, 37.5 and mg/m!. The roots extract of the Casiatica only showed the zone of inhibition at the concentration of 500 mg/ml range about 8 mm to 10 mm. There were no zone of inhibition observed on the roots extract at the concentration of 250, 150, 75 and 37.5 mg/m!. The positive control (Gentamicin 30llg) showed zone of inhibition in the range 25 to 30 mm. Percentage of inhibition of DPPH radical scavenging activity by methanolic leaves extract of Casiatica showed higher value which were 38.53% for 1.25 mg/ml, 30.35% for 2.5 mg/ml, 84.55% for 5 mg/ml, 85.16% for 10 mg/ml and 86.47% for 20 mg/ml while the methanolic roots extract of Casiatica were 10.38% for 1.25 mg/ml, 4.35% for 2.5 mg/ml, 14.52% for 5 mg/ml, 62.26% for 10 mg/ml and 79.32% for 20 mg/m!. In conclusion, the CenteUa asiatica leaves extract showed greater antimicrobial and antioxidant activities compared with the roots. In vivo study is highly recommended for further study.
format	Thesis
qualification_level	Bachelor degree
author	Sarkawi, Zarina
author_facet	Sarkawi, Zarina
author_sort	Sarkawi, Zarina
title	Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi
title_short	Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi
title_full	Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi
title_fullStr	Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi
title_full_unstemmed	Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi
title_sort	antimicrobial and antioxidant activities of leaves and roots of centella asiatica / zarina sarkawi
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Health Sciences
publishDate	2015
url	https://ir.uitm.edu.my/id/eprint/28051/1/TD_ZARINA%20SARKAWI%20HS%2015_5.pdf
_version_	1783734044233564160

Antimicrobial and antioxidant activities of leaves and roots of Centella asiatica / Zarina Sarkawi

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