Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.

Syzygium polyanthum (Wight) Walp. is a plant widely consumed as raw vegetables or used in culinary in Malaysia. This study was performed to determine the chemical composition, antioxidant and antibacterial activity of Syzygium polyanthum essential oil from Malaysia. The essential oil was extracted f...

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Main Author:	Nur Amalina , Ahmad
Format:	Thesis
Language:	English
Published:	2014
Subjects:	QP Physiology
Online Access:	http://umpir.ump.edu.my/id/eprint/10767/ http://umpir.ump.edu.my/id/eprint/10767/ http://umpir.ump.edu.my/id/eprint/10767/1/%28CD8270%29%20NUR%20AMALINA%20BINTI%20AHMAD.pdf

id	ump-10767
recordtype	eprints
spelling	ump-107672015-11-03T03:41:08Z http://umpir.ump.edu.my/id/eprint/10767/ Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp. Nur Amalina , Ahmad QP Physiology Syzygium polyanthum (Wight) Walp. is a plant widely consumed as raw vegetables or used in culinary in Malaysia. This study was performed to determine the chemical composition, antioxidant and antibacterial activity of Syzygium polyanthum essential oil from Malaysia. The essential oil was extracted from the leaf by hydrodistillation method. The percentage of the essential oils obtained, for the fresh and the dried leaf were 0.67 % and 1.50 %, respectively. Analysis by GCMS revealed a total of 26 and 29 compounds, representing 71.71 % and 90.92 % of the overall compositions, were detected in the fresh and the dried leaf essential oils. Both oils were characterized by high amount of monoterpene hydrocarbons with α-pinene was the major compounds for the fresh leaf (28.78 %) and the dried leaf (34.15 %). The antioxidant activities of the fresh and dried leaf oils were evaluated using three different assay; DPPH free radical scavenging, β-carotene bleaching and ferrous-ion chelating. Results showed that the oils exhibited a potential antioxidant activity. The antibacterial activity was evaluated using the disc diffusion and microdilution methods against three gram-positive bacteria (Bacillus subtilis, Enterococcus faecalis) and three gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, Salmonella typhii). The oils exhibited antibacterial activity against all of the tested bacteria. The minimum inhibitory concentration (MIC) values for the fresh leaf oil were in the range of 0.03 mg/ml to 0.25 mg/ml while the MIC values for the dried leaf oil were in the range of 0.03 mg/ml to 0.12 mg/ml. The chemical composition, antioxidant and antibacterial activity of essential oil of S. polyanthum from Malaysia is presented here for the first time 2014-04 Thesis NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/10767/1/%28CD8270%29%20NUR%20AMALINA%20BINTI%20AHMAD.pdf Nur Amalina , Ahmad (2014) Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp. Masters thesis, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:83597&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	QP Physiology
spellingShingle	QP Physiology Nur Amalina , Ahmad Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.
description	Syzygium polyanthum (Wight) Walp. is a plant widely consumed as raw vegetables or used in culinary in Malaysia. This study was performed to determine the chemical composition, antioxidant and antibacterial activity of Syzygium polyanthum essential oil from Malaysia. The essential oil was extracted from the leaf by hydrodistillation method. The percentage of the essential oils obtained, for the fresh and the dried leaf were 0.67 % and 1.50 %, respectively. Analysis by GCMS revealed a total of 26 and 29 compounds, representing 71.71 % and 90.92 % of the overall compositions, were detected in the fresh and the dried leaf essential oils. Both oils were characterized by high amount of monoterpene hydrocarbons with α-pinene was the major compounds for the fresh leaf (28.78 %) and the dried leaf (34.15 %). The antioxidant activities of the fresh and dried leaf oils were evaluated using three different assay; DPPH free radical scavenging, β-carotene bleaching and ferrous-ion chelating. Results showed that the oils exhibited a potential antioxidant activity. The antibacterial activity was evaluated using the disc diffusion and microdilution methods against three gram-positive bacteria (Bacillus subtilis, Enterococcus faecalis) and three gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, Salmonella typhii). The oils exhibited antibacterial activity against all of the tested bacteria. The minimum inhibitory concentration (MIC) values for the fresh leaf oil were in the range of 0.03 mg/ml to 0.25 mg/ml while the MIC values for the dried leaf oil were in the range of 0.03 mg/ml to 0.12 mg/ml. The chemical composition, antioxidant and antibacterial activity of essential oil of S. polyanthum from Malaysia is presented here for the first time
format	Thesis
author	Nur Amalina , Ahmad
author_facet	Nur Amalina , Ahmad
author_sort	Nur Amalina , Ahmad
title	Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.
title_short	Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.
title_full	Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.
title_fullStr	Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.
title_full_unstemmed	Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.
title_sort	chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/10767/ http://umpir.ump.edu.my/id/eprint/10767/ http://umpir.ump.edu.my/id/eprint/10767/1/%28CD8270%29%20NUR%20AMALINA%20BINTI%20AHMAD.pdf
first_indexed	2023-09-18T22:10:45Z
last_indexed	2023-09-18T22:10:45Z
_version_	1777415010615558144

Chemical composition, antioxidant and antibacterial activity of essential oil from leaf of syzygium polyanthum (wight) walp.

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