UPM Institutional Repository

Antioxidant activities of phenolic rich fractions (PRFs) obtained from black mahlab (Monechma ciliatum) and white mahlab (Prunus mahaleb) seedcakes


Citation

Mariod, Abdalbasit Adam and Mohamad Ibrahim, Ramlah and Ismail, Maznah and Ismail, Norsharina (2010) Antioxidant activities of phenolic rich fractions (PRFs) obtained from black mahlab (Monechma ciliatum) and white mahlab (Prunus mahaleb) seedcakes. Food Chemistry, 118 (1). pp. 120-127. ISSN 0308-8146; ESSN: 1873-7072

Abstract

The antioxidant activities of phenolic rich fractions (PRFs) from crude methanolic extract (CME), and its fractions using ethyl acetate (EAF), hexane (HF) and water (WF) of black mahlab (Monechma ciliatum) and white mahlab (Prunus mahaleb) seedcakes were investigated. The total phenolic compounds were found to be higher in white mahlab than black mahlab seedcakes. The antioxidant activity determined by the DPPH method revealed that black mahlab PRFs had the highest antioxidant activity, compared to white mahlab fractions. The presence of antioxidants in the two mahlab PRFs reduced the oxidation of β-carotene by hydroperoxides from these extracts/fractions. The effect of the two mahlab PRFs on the oxidative stability of corn oil at 70 °C was tested in the dark and compared with butylated hydroxyanisole (BHA). The CME performed better antioxidant activity in inhibiting the formation of both primary and secondary oxidation products. The qualitative and quantitative characterisation of phenolic compounds was carried out by HPLC/DAD.


Download File

[img]
Preview
PDF (Abstract)
Antioxidant activities of phenolic rich fractions.pdf

Download (182kB) | Preview

Additional Metadata

Item Type: Article
Divisions: Faculty of Medicine and Health Science
Institute of Bioscience
DOI Number: https://doi.org/10.1016/j.foodchem.2009.04.085
Publisher: Elsevier Science Limited
Keywords: β-Carotene-linoleic acid assay; 1,1-Diphenyl-2-picrylhydrazyl (DPPH); Antioxidant activity; Monechma ciliatum; Phenolic rich fractions; Prunus mahaleb
Depositing User: Raja Norazlinda Raja Azenam
Date Deposited: 05 Dec 2014 03:19
Last Modified: 20 Oct 2015 23:37
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.foodchem.2009.04.085
URI: http://psasir.upm.edu.my/id/eprint/13177
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item