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Antioxidant Activity and Phenolic content of Coleus blumei Benth. (LAMIACEAE)

MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang.

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Bibliographic Details
Main Authors: Mohd Shaiful Azman, Abdul Rahim, Jailani, Salihon, Mashitoh, Mohd Yusoff, Ibrahim, Abu Bakar, M. Rizal, Martua Damanik
Format: Working Paper
Language:English
Published: Universiti Malaysia Pahang (UMP) 2010
Subjects:
Coleus blumei
Boiling extraction
Antioxidant activity
Phenols content
Malaysian Technical Universities Conference on Engineering and Technology (MUCEET)
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/8664
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spelling my.unimap-86642010-08-13T07:49:37Z Antioxidant Activity and Phenolic content of Coleus blumei Benth. (LAMIACEAE) Mohd Shaiful Azman, Abdul Rahim Jailani, Salihon Mashitoh, Mohd Yusoff Ibrahim, Abu Bakar M. Rizal, Martua Damanik Coleus blumei Boiling extraction Antioxidant activity Phenols content Malaysian Technical Universities Conference on Engineering and Technology (MUCEET) MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang. This purpose of this study was to select which among the factors temperature, boiling repetition, and concentration of sample are relevant in the boiling extraction to preserve antioxidants and phenol content in Coleus blumei Benth. (LAMIACEAE) (Malay: ati-ati). Fresh plants were boiled at 45oC for one hour. Then, the decoction was filtered and water was added again for subsequent boiling at the same temperature and time duration, and this process was repeated six times with the same sample. The antioxidants content of the extracted samples were measured on the basis of scavenging activity of the stable 1,1- diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay. Absorbance at 517 nm was determined after 30 min, and the percent inhibition activity was then calculated. Total phenols (TP) concentrations were measured using the Folin-Ciocalteu assay. The absorbance was measured at 760 nm using a UV spectrophotometer after 30 minutes of mixture. Results were expressed as gallic acid equivalents (GAE)/100 g dry weight. Results showed that the antioxidant activities and total phenols content of Coleus blumei from first boiling were significantly higher (p < 0.05) than those in the second to sixth boiling. The temperature observed (45oC) was found to be practicable to preserve the integrity of possible activity of extracted compounds. 2010-08-13T07:49:37Z 2010-08-13T07:49:37Z 2009-06-20 Working Paper http://hdl.handle.net/123456789/8664 en Proceedings of the Malaysian Technical Universities Conference on Engineering and Technology (MUCEET) 2009 Universiti Malaysia Pahang (UMP)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Coleus blumei
Boiling extraction
Antioxidant activity
Phenols content
Malaysian Technical Universities Conference on Engineering and Technology (MUCEET)
spellingShingle Coleus blumei
Boiling extraction
Antioxidant activity
Phenols content
Malaysian Technical Universities Conference on Engineering and Technology (MUCEET)
Mohd Shaiful Azman, Abdul Rahim
Jailani, Salihon
Mashitoh, Mohd Yusoff
Ibrahim, Abu Bakar
M. Rizal, Martua Damanik
Antioxidant Activity and Phenolic content of Coleus blumei Benth. (LAMIACEAE)
description MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang.
format Working Paper
author Mohd Shaiful Azman, Abdul Rahim
Jailani, Salihon
Mashitoh, Mohd Yusoff
Ibrahim, Abu Bakar
M. Rizal, Martua Damanik
author_facet Mohd Shaiful Azman, Abdul Rahim
Jailani, Salihon
Mashitoh, Mohd Yusoff
Ibrahim, Abu Bakar
M. Rizal, Martua Damanik
author_sort Mohd Shaiful Azman, Abdul Rahim
title Antioxidant Activity and Phenolic content of Coleus blumei Benth. (LAMIACEAE)
title_short Antioxidant Activity and Phenolic content of Coleus blumei Benth. (LAMIACEAE)
title_full Antioxidant Activity and Phenolic content of Coleus blumei Benth. (LAMIACEAE)
title_fullStr Antioxidant Activity and Phenolic content of Coleus blumei Benth. (LAMIACEAE)
title_full_unstemmed Antioxidant Activity and Phenolic content of Coleus blumei Benth. (LAMIACEAE)
title_sort antioxidant activity and phenolic content of coleus blumei benth. (lamiaceae)
publisher Universiti Malaysia Pahang (UMP)
publishDate 2010
url http://dspace.unimap.edu.my/xmlui/handle/123456789/8664
_version_ 1643789293664075776
score 13.160551

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