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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Antioxidant activity and phenolic content of phenolic rich fractions obtained from black cumin (Nigella sativa) seedcake
Food Chemistry, Volume 116, No. 1, Year 2009
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Description
The antioxidant activities of crude methanolic extract (CME) and its fractions using ethyl acetate (EAF), hexane (HF) and water (WF) of black cumin seedcake were investigated. DPPH radical scavenging activity, β-carotene-linoleate bleaching, and inhibition of corn oil oxidation were used to evaluate the antioxidant capacity. The total phenolics were found to be 78.8, 27.8, 32.1 and 12.1 mg gallic acid equivalents (GAE)/g in EAF, CME, WF and HF, respectively. The CME and EAF exhibited the highest DPPH followed by WF and HF. The extract/fractions showed high effect on reducing the oxidation of β-carotene. The effect of extract/fractions on the oxidative stability of corn oil at 70 °C was tested in the dark and compared with butylated hydroxyanisole (BHA). The oil peroxide and anisidine values were generally lower with addition of PRFs in comparison to a control. The predominant phenolic compounds identified by HPLC-DAD in CME and WF of black cumin seedcake were hydroxybenzoic, syringic and p-cumaric acids. © 2009 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Mariod, Abdalbasit Adam
Malaysia, Serdang
Universiti Putra Malaysia
Sudan, Khartoum
Sudan University of Science and Technology
Ibrahim, R. M.
Malaysia, Serdang
Universiti Putra Malaysia
Ismail, Maznah S.
Malaysia, Serdang
Universiti Putra Malaysia
Ismail, Norsharina
Malaysia, Serdang
Universiti Putra Malaysia
Statistics
Citations: 199
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.foodchem.2009.02.051
ISSN:
03088146
Research Areas
Environmental