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Phenolic content, antioxidant and physico-chemical properties of Sardinian monofloral honeys

Petretto, Giacomo Luigi and Cossu, Massimo and Alamanni, Maria Cristina Paolina (2015) Phenolic content, antioxidant and physico-chemical properties of Sardinian monofloral honeys. International journal of food science & technology, Vol. 50 (2), p. 482-491. ISSN 0950-5423. eISSN 1365-2621. Article.

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DOI: 10.1111/ijfs.12652


In this study, fifty-one monofloral Sardinian honeys from ten various floral origins were screened for their phenolic content, antioxidant activity, colour and electrical conductivity. The total phenolic amounts have been evaluated by Folin–Ciocalteu method, whereas quantification of several phenolic compounds (phenolic acids and flavonoids) has been carried out by HPLC-DAD technique. The richest sample in phenolic compounds resulted strawberry tree honey with about 40 mg GAE/100 g, as well FRAP test and DPPH˙ test confirm that antioxidant activity of strawberry tree honey extract exceed both honey extracts and synthetic antioxidants like BHA and BHT. Among the studied phenolic compounds a total of five phenolic acids (ferulic, syringic, trans-cinnamic, chlorogenic and p-hydroxycinnamic) and nine flavonoids (catechin, kaempferol, rutin, quercetin, luteolin, apigenin, galangin, pinocembrin and pinobanksin) were identified. Our results show good correlations between total polyphenol amount and antioxidant activity and between colour and electrical conductivity.

Item Type:Article
ID Code:10331
Uncontrolled Keywords:Antioxidant activity, HPLC-DAD, monofloral honey, phenolic composition
Subjects:Area 03 - Scienze chimiche > CHIM/10 Chimica degli alimenti
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Chimica e Farmacia
Publisher:Blackwell / Wiley
Deposited On:17 Nov 2014 16:39

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