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Antioxidant activity, color chromaticity coordinates, and chemical characterization of monofloral honeys from Morocco

Petretto, Giacomo Luigi, Tuberoso, Carlo Ignazio Giovanni, Fenu, Maurizio Antonio, Rourke, Jonathan P., Belhaj, Omar and Pintore, Giorgio 2017. Antioxidant activity, color chromaticity coordinates, and chemical characterization of monofloral honeys from Morocco. International Journal of Food Properties 20 (9) , pp. 2016-2027. 10.1080/10942912.2016.1230745

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Abstract

The bioprospecting of several monofloral Moroccan honeys was carried out. The antiradical activity expressed as mmol Trolox equivalents/kg of honey and evaluated by 2,2-diphenyl-1-picrylhydrazyl assay, ranged from 0.15 for euphorb honey to 1.08 for citrus honey. The antioxidant activity expressed as mmol Fe2+/kg and evaluated by ferric ion reducing antioxidant power assay, ranged from 0.96 for euphorb honey to 4.74 for orange honey. The total phenol content was evaluated by colorimetric assay, while the color attributes were evaluated as transmittance data. Significant Pearson correlation factors were found between total polyphenol amount and antioxidant activity and between color attributes and antioxidant activity. Furthermore the chemical composition of volatile organic compounds was determined. The volatile organic compounds chemical composition of the studied honeys was mainly represented by terpene and benzene derivatives, Maillard reaction products, isoprenoids, and hydrocarbons. The volatiles fingerprint, as well as a targeted high-performance liquid chromatography analysis of the polar components, was used to tentatively confirm the declared botanical origin of the samples studied.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Taylor & Francis: STM, Behavioural Science and Public Health Titles
ISSN: 1094-2912
Date of First Compliant Deposit: 17 January 2019
Date of Acceptance: 27 August 2016
Last Modified: 18 Oct 2019 03:24
URI: http://orca-mwe.cf.ac.uk/id/eprint/118512

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