Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria

This study was conducted to evaluate the antioxidative activity of methanolic extracts from different parts of twenty six plants collected from Taman Negara. Ethanol were used as solvents and antioxidative effects for lipid peroxidation measured by a ferric thiocyanate method (FTC) and thiobarbituri...

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Main Author:	Mohd Zakria, Siti Rahayu
Format:	Student Project
Language:	English
Published:	Faculty of Applied Sciences 2009
Subjects:	Organic chemistry
Online Access:	http://ir.uitm.edu.my/id/eprint/22980/ http://ir.uitm.edu.my/id/eprint/22980/1/PPb_SITI%20RAHAYU%20MOHD%20ZAKRIA%20AS%2009_5.pdf

id	uitm-22980
recordtype	eprints
spelling	uitm-229802019-01-29T01:31:09Z http://ir.uitm.edu.my/id/eprint/22980/ Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria Mohd Zakria, Siti Rahayu Organic chemistry This study was conducted to evaluate the antioxidative activity of methanolic extracts from different parts of twenty six plants collected from Taman Negara. Ethanol were used as solvents and antioxidative effects for lipid peroxidation measured by a ferric thiocyanate method (FTC) and thiobarbituric acid (TBA). About ten species of the plant were tested for their activity in inhibiting lipid peroxide, and most of them exhibited very strong antioxidant properties when compared to Vitamin E (α-tocopherol) and quercetin with percent inhibition of 81-98% in FTC and 89-97% in TBA assays. For free radical scavenging, DPPH method was performed to measure the activity of each species. Most of the species out of twenty six plants which were tested showed positive result for the different method which indicate the species contain a good antioxidant. From the part tested, most of positive result are leaves. The results suggest that several compounds contribute to antioxidative activity of different parts of the plants. The family of Annonaceae showed weak activity in free radical scavenging with the most species showed no activity or IC₅₀ value more than 100 µg/ml. The family of Melastomataceae showed strong in free radical scavenging which most of the part tested for every species give the value of IC₅₀ less than 30 µg/ml. Faculty of Applied Sciences 2009 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/22980/1/PPb_SITI%20RAHAYU%20MOHD%20ZAKRIA%20AS%2009_5.pdf Mohd Zakria, Siti Rahayu (2009) Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria. [Student Project] (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Organic chemistry
spellingShingle	Organic chemistry Mohd Zakria, Siti Rahayu Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria
description	This study was conducted to evaluate the antioxidative activity of methanolic extracts from different parts of twenty six plants collected from Taman Negara. Ethanol were used as solvents and antioxidative effects for lipid peroxidation measured by a ferric thiocyanate method (FTC) and thiobarbituric acid (TBA). About ten species of the plant were tested for their activity in inhibiting lipid peroxide, and most of them exhibited very strong antioxidant properties when compared to Vitamin E (α-tocopherol) and quercetin with percent inhibition of 81-98% in FTC and 89-97% in TBA assays. For free radical scavenging, DPPH method was performed to measure the activity of each species. Most of the species out of twenty six plants which were tested showed positive result for the different method which indicate the species contain a good antioxidant. From the part tested, most of positive result are leaves. The results suggest that several compounds contribute to antioxidative activity of different parts of the plants. The family of Annonaceae showed weak activity in free radical scavenging with the most species showed no activity or IC₅₀ value more than 100 µg/ml. The family of Melastomataceae showed strong in free radical scavenging which most of the part tested for every species give the value of IC₅₀ less than 30 µg/ml.
format	Student Project
author	Mohd Zakria, Siti Rahayu
author_facet	Mohd Zakria, Siti Rahayu
author_sort	Mohd Zakria, Siti Rahayu
title	Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria
title_short	Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria
title_full	Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria
title_fullStr	Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria
title_full_unstemmed	Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria
title_sort	antioxidant activities of some selected plants collected from taman negara / siti rahayu mohd zakria
publisher	Faculty of Applied Sciences
publishDate	2009
url	http://ir.uitm.edu.my/id/eprint/22980/ http://ir.uitm.edu.my/id/eprint/22980/1/PPb_SITI%20RAHAYU%20MOHD%20ZAKRIA%20AS%2009_5.pdf
first_indexed	2023-09-18T23:09:49Z
last_indexed	2023-09-18T23:09:49Z
_version_	1777418727401193472

Antioxidant activities of some selected plants collected from Taman Negara / Siti Rahayu Mohd Zakria

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