Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus

The impact of tropical seasons (dry and wet) and growth stages (8, 10 and 12 weeks) of Cosmos caudatus on the antioxidant activity (AA), total phenolic content (TPC) as well as the level of bioactive compounds were evaluated using high performance liquid chromatography (HPLC). The plant morphology (...

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Main Authors:	Mediani, Ahmed, Abas, Faridah, Tan, Chin Ping, Khatib, Alfi, Lajis, Nordin H.
Format:	Article
Language:	English
Published:	Springer US 2012
Subjects:	QD Chemistry
Online Access:	http://irep.iium.edu.my/33491/ http://irep.iium.edu.my/33491/ http://irep.iium.edu.my/33491/ http://irep.iium.edu.my/33491/1/Mediani_et_al.%2C_2012_PFHN.pdf

id	iium-33491
recordtype	eprints
spelling	iium-334912013-12-18T00:41:56Z http://irep.iium.edu.my/33491/ Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus Mediani, Ahmed Abas, Faridah Tan, Chin Ping Khatib, Alfi Lajis, Nordin H. QD Chemistry The impact of tropical seasons (dry and wet) and growth stages (8, 10 and 12 weeks) of Cosmos caudatus on the antioxidant activity (AA), total phenolic content (TPC) as well as the level of bioactive compounds were evaluated using high performance liquid chromatography (HPLC). The plant morphology (plant height) also showed variation between the two seasons. Samples planted from June to August (during the dry season) exhibited a remarkably higher bioactivity and height than those planted from October to December (during the wet season). The samples that were harvested at eight weeks of age during the dry season showed the highest bioactivity with values of 26.04 g GAE/100 g and 22.1 μg/ml for TPC and IC50, respectively. Identification of phytochemical constituents in the C. caudatus extract was carried out by liquid chromatography coupled with diode array detection and electrospray tandem mass (LC-DAD-ESIMS/MS) technique and the confirmation of constituents was achieved by comparison with literature data and/or co-chromatography with authentic standards. Six compounds were indentified including quercetin 3-O-rhamnoside, quercetin 3-O-glucoside, rutin,quercetin 3-O-arabinofuranoside, quercetin 3-O-galactoside and chlorogenic acid. Their concentrations showed significant variance among the 8, 10 and 12-week-old herbs during both seasons. Springer US 2012-10-10 Article PeerReviewed application/pdf en http://irep.iium.edu.my/33491/1/Mediani_et_al.%2C_2012_PFHN.pdf Mediani, Ahmed and Abas, Faridah and Tan, Chin Ping and Khatib, Alfi and Lajis, Nordin H. (2012) Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus. Plant Foods for Human Nutrition, 67 (4). pp. 344-350. ISSN 0921-9668 http://link.springer.com/article/10.1007%2Fs11130-012-0317-x 10.1007/s11130-012-0317-x
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Mediani, Ahmed Abas, Faridah Tan, Chin Ping Khatib, Alfi Lajis, Nordin H. Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus
description	The impact of tropical seasons (dry and wet) and growth stages (8, 10 and 12 weeks) of Cosmos caudatus on the antioxidant activity (AA), total phenolic content (TPC) as well as the level of bioactive compounds were evaluated using high performance liquid chromatography (HPLC). The plant morphology (plant height) also showed variation between the two seasons. Samples planted from June to August (during the dry season) exhibited a remarkably higher bioactivity and height than those planted from October to December (during the wet season). The samples that were harvested at eight weeks of age during the dry season showed the highest bioactivity with values of 26.04 g GAE/100 g and 22.1 μg/ml for TPC and IC50, respectively. Identification of phytochemical constituents in the C. caudatus extract was carried out by liquid chromatography coupled with diode array detection and electrospray tandem mass (LC-DAD-ESIMS/MS) technique and the confirmation of constituents was achieved by comparison with literature data and/or co-chromatography with authentic standards. Six compounds were indentified including quercetin 3-O-rhamnoside, quercetin 3-O-glucoside, rutin,quercetin 3-O-arabinofuranoside, quercetin 3-O-galactoside and chlorogenic acid. Their concentrations showed significant variance among the 8, 10 and 12-week-old herbs during both seasons.
format	Article
author	Mediani, Ahmed Abas, Faridah Tan, Chin Ping Khatib, Alfi Lajis, Nordin H.
author_facet	Mediani, Ahmed Abas, Faridah Tan, Chin Ping Khatib, Alfi Lajis, Nordin H.
author_sort	Mediani, Ahmed
title	Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus
title_short	Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus
title_full	Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus
title_fullStr	Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus
title_full_unstemmed	Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus
title_sort	influence of growth stage and season on the antioxidant constituents of cosmos caudatus
publisher	Springer US
publishDate	2012
url	http://irep.iium.edu.my/33491/ http://irep.iium.edu.my/33491/ http://irep.iium.edu.my/33491/ http://irep.iium.edu.my/33491/1/Mediani_et_al.%2C_2012_PFHN.pdf
first_indexed	2023-09-18T20:48:25Z
last_indexed	2023-09-18T20:48:25Z
_version_	1777409830897582080

Influence of growth stage and season on the antioxidant constituents of Cosmos caudatus

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