Quantitative estimation of pharmacologically relevant phenolic compounds in olive oils harvested in Jabal Al Akhdar in Oman

Food chemistry advances Pub Date : 2025-02-10 DOI:10.1016/j.focha.2025.100922

Zakiya H. Al-Hashmi , Haider A. Al-Lawati , FakhrEldin O. Suliman , Javad Hassanzadeh , Ghanim Salim Said Aal-Thani , Ali Saleh Al Forqani , Ahmed Rashid Al Fahdi

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Abstract

Extra virgin olive oil (EVOO) is widely acknowledged for its health-promoting properties due to its rich composition. For example, certain phenolic compounds (PCs) present in EVOO, including hydroxytyrosol and tyrosol, oleacein, and oleocanthal (OHTs), are recognized for their superb pharmacological impacts. Herein, EVOO samples extracted from olives harvested in Jabal Al Akhdar (JA), Oman, were analyzed for their levels of OHTs. The study included six varieties of EVOO -Carotina, Kalamata, Picual, Dolce, Arbequina, and Karonaki- collected from Riyad Al Jabal Farm (RJ), administrated by the Royal Court. Identification of OHTs was carried out using liquid chromatography–tandem mass spectrometry (LC–MS/MS), and quantitative analysis was conducted using high-performance liquid chromatography (HPLC) coupled to a photodiode array detector (DAD). The method demonstrated strong linear relationships with a linear range between 0.2 and 40 mg kg⁻¹ for the four compounds. Results revealed that certain EVOO varieties such as Carotina (181.2 ± 0.1 mg kg⁻¹), Kalamata (137.16 ± 0.09 mg kg⁻¹), and Picual (107.7 ± 0.3 mg kg⁻¹) exhibited the highest concentration of OHTs, making them preferred choices for cultivation in JA. Furthermore, the Folin–Ciocalteu (FC) method was used to estimate the total phenolic content, revealing that Picual and Carotina exhibited the highest levels compared to the other varieties.

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阿曼阿赫达尔山收获的橄榄油中药理学相关酚类化合物的定量估计

特级初榨橄榄油（EVOO）因其丰富的成分而被广泛认为具有促进健康的特性。例如，EVOO中存在的某些酚类化合物（PCs），包括羟基酪醇和酪醇、油酸素和油籽酸（OHTs），因其极好的药理作用而被认可。本文分析了从阿曼阿赫达尔（Jabal Al Akhdar）收获的橄榄中提取的EVOO样品的OHTs水平。该研究包括6个EVOO品种——carotina、Kalamata、Picual、Dolce、Arbequina和Karonaki，采自Riyad Al Jabal农场（RJ），由皇家法院管理。采用液相色谱-串联质谱法（LC-MS /MS）鉴定OHTs，采用高效液相色谱法（HPLC）耦合光电二极管阵列检测器（DAD）进行定量分析。在0.2 ~ 40 mg kg−1的线性范围内，该方法证明了这四种化合物的强线性关系。结果表明，胡萝卜（181.2±0.1 mg kg−1）、卡拉马塔（137.16±0.09 mg kg−1）和皮尤（107.7±0.3 mg kg−1）等EVOO品种的OHTs含量最高，是JA栽培的首选品种。此外，采用Folin-Ciocalteu （FC）法测定了总酚含量，结果表明，与其他品种相比，Picual和Carotina的总酚含量最高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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