Mint (Mentha spp.) Honey: Analysis of the Phenolic Profile and Antioxidant Activity

化学 DPPH 没食子酸 食品科学 阿布茨 槲皮素 咖啡酸 类黄酮 特罗洛克 酚类 抗氧化剂 植物 生物化学 生物
作者
Tomislav Pavlešić,Sanja Poljak,Dijana Mišetić Ostojić,Ivana Lučin,Christian A. Reynolds,Daniela Kalafatović,Lara Saftić Martinović
出处
期刊:Food Technology and Biotechnology [University of Zagreb]
卷期号:60 (4): 509-519 被引量:6
标识
DOI:10.17113/ftb.60.04.22.7703
摘要

Research background. The composition of honey is influenced by the botanical source and geographical area of the nectar from which it is derived. Unifloral honeys reach higher market value than multifloral honeys due to their specific aromas, which result from volatile and phenolic compounds. Experimental approach. The aim of our study is to characterize the phenolic composition of a rare unifloral variety of honey – mint (Mentha spp.) honey. For this purpose, we performed standard physicochemical analyses, pollen analysis, determined total phenolic and flavonoid content, analysed antioxidant activity and performed qualitative and quantitative analyses of phenolic compounds for five mint honeys. Results and conclusions. Our results indicate that mint honey samples have high phenolic content, expressed in gallic acid equivalents, from (76.7±0.6) to (90.1±1.1) mg/100 g, and flavonoid content, expressed as quercetin equivalents, from (6.7±0.6) to (12.5±0.8) mg/100 g. These honey samples also exhibit strong antioxidant activity, expressed as Trolox equivalents, from (33.6±2.8) to (51.3±1.2) mg/100 g and from (14.4±0.8) to (55.1±2.4) mg/100 g when analysed with DPPH and ABTS assays, respectively. Quantitative LC-MS/MS analysis revealed that the most abundant phenols in all samples were chrysin, apigenin and p-coumaric acid. Qualitative LC-MS/MS analysis identified the presence of kaempferide, diosmetin, acacetin and several caffeic acid derivatives. Novelty and scientific contribution. Our study indicates that mint honey contains unique phenolic profiles, which likely contribute to its distinctive aroma and strong antioxidant activity. A detailed description of the rare honey varieties gives beekeepers greater visibility and easier access to the demanding natural product market.
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