Narrow-Bore Tube Magnetic Solid-Phase Extraction Method Utilizing Ionic Liquid-Modified Magnetic Nanoparticles for the Preconcentration and Determination of Catechin in Grape Juice

IF 2.6 3区农林科学 Q2 FOOD SCIENCE & TECHNOLOGY

Food Analytical Methods Pub Date : 2024-12-02 DOI:10.1007/s12161-024-02721-7

Sahar Rezaeinejad, Payman Hashemi, Akram Rahimi

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Abstract

A magnetic solid-phase extraction (MSPE) approach is developed as an efficient and simple method on the basis of the modification of magnetic nanoparticles using an ionic liquid in order to preconcentrate and extract catechin from grape juice samples. A narrow-bore tube (NBT) containing the sample was used to carry out the extraction in a simple and efficient manner. Using scanning electron microscopy (SEM), Fourier transfer infrared (FT-IR) spectroscopy, and X-ray spectroscopy (EDX), the specifications of the synthesized nanoparticles modified with 2-hydroxyethyl ammonium chloride ionic liquid were scrutinized. The impact of various parameters on catechin extraction was assessed. Under optimized conditions (i.e., sample volume of 10 mL, pH 3, 14 mg of sorbent, 20-min desorption time, and elution with 3.0 mL of 0.15 mol L^–1 phosphate buffer at pH 10), the relative standard deviation and limit of detection (LOD) were found to be 1.63% and 0.141 µg mL⁻¹, respectively, for seven replicate determinations using HPLC–UV. Based on the obtained experimental results, the maximum adsorption capacity of the sorbent for catechin was 61 mg g⁻¹. Eventually, to determine the applicability of the developed technique, the method was a success when utilized to analyze the catechin content of the samples of grape juice, indicating a recovery range of 93.4–99.5%.

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离子液体修饰磁性纳米颗粒窄管磁固相萃取法预富集测定葡萄汁中儿茶素

在离子液体修饰磁性纳米颗粒的基础上，建立了一种高效、简便的磁固相萃取法（MSPE），用于预浓缩和提取葡萄汁样品中的儿茶素。采用含样品的窄孔管（NBT）进行简单、高效的提取。利用扫描电子显微镜（SEM）、傅里叶转移红外光谱（FT-IR）和x射线光谱（EDX）对2-羟乙基氯化铵离子液体修饰的纳米颗粒进行了表征。评价了各参数对儿茶素提取的影响。优化条件为：进样量为10 mL， pH为3，吸附剂为14 mg，解吸时间为20 min， pH为10，磷酸缓冲液为3.0 mL, 0.15 mol L-1。在此条件下，HPLC-UV重复测定7次，相对标准偏差为1.63%，检出限为0.141µg mL - 1。实验结果表明，该吸附剂对儿茶素的最大吸附量为61 mg g−1。最后，为确定所建立技术的适用性，将该方法用于葡萄汁样品中儿茶素含量的分析取得了成功，回收率为93.4 ~ 99.5%。

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来源期刊

Food Analytical Methods 农林科学-食品科技

CiteScore

6.00

自引率

3.40%

发文量

244

审稿时长

3.1 months

期刊介绍： Food Analytical Methods publishes original articles, review articles, and notes on novel and/or state-of-the-art analytical methods or issues to be solved, as well as significant improvements or interesting applications to existing methods. These include analytical technology and methodology for food microbial contaminants, food chemistry and toxicology, food quality, food authenticity and food traceability. The journal covers fundamental and specific aspects of the development, optimization, and practical implementation in routine laboratories, and validation of food analytical methods for the monitoring of food safety and quality.