AI Article Synopsis
- A gas chromatographic method was developed to detect specific endocrine disruptor pesticides in wine samples, focusing on simplifying existing pesticide testing methods for food.
- Alternative sample preparation techniques were evaluated, with a method using a florosil column post-liquid-liquid extraction yielding effective recovery rates of 72-97%.
- The study achieved high accuracy with regression coefficients above 0.99, precise detection limits (0.6-2.9 ng/mL), and relative measurement uncertainties between 7-22%.
Article Abstract
A gas chromatographic method for the determination of endocrine disruptor pesticides (Chlorpyrifos, Penconazole, Procymidone, Iprodione, Bromopropylate and Lambda-Cyhalothrin) in wine samples is described. A general DFG-S19 method for residual pesticide determination in all kind of food stuff was investigated to simplify and adopt for wine samples in this work. Alternative sample preparation routes were elucidated and compared according to their recovery values. Four different separation techniques were tested and the method employing florosil column after a LLE procedure was applied for wine samples with satisfactory recovery ratios (72-97%). The pesticides were extracted from the sample by cyclohexane-ethyl acetate mixture (1:1 v/v) and cleaned up by florosil column. The regression coefficients were at least 0.99 and relative standard deviations were no higher than 16%. Detection limits were in the range of 0.6-2.9 ng/mL and the relative expanded measurement uncertainties were calculated in the 7-22% range.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.foodchem.2012.10.053 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Three-Dimensional Zeolitic Imidazolate Framework-8 as Sorbent Integrated with Active Capillary Plasma Mass Spectrometry for Rapid Assessment of Low-Level Wine and Grape Quality-Related Volatiles.
Molecules
December 2024
Gulbali Institute, Charles Sturt University, Wagga, NSW 2650, Australia.
The most commonly used methods to chemically assess grape and wine quality with high sensitivity and selectivity require lengthy analysis time and can be resource intensive. Here, we developed a rapid and non-destructive method that would help in grading and decision support. In this work, we demonstrate that integrating a three-dimensional (3D) material for volatile sampling with mass spectrometry detection can be used to sample grapes for phytosanitary, quality or smoke-taint assessments at low levels of marker compounds.
View Article and Find Full Text PDFUnearthing Genetic Treasures: Exploring Lost Autochthonous Varieties in Lebanon.
Genes (Basel)
December 2024
Laboratoire Biodiversité et Génomique Fonctionnelle, Faculté des Sciences, Université Saint-Joseph, Campus Sciences et Technologies, Mar Roukos, Mkalles, P.O. Box 1514, Riad el Solh, Beirut 1107 2050, Lebanon.
Background/objectives: Lebanon, one of the oldest centers of grapevine ( L.) cultivation, is home to a rich diversity of local grape varieties. This biodiversity is linked to the country's unique topography and millennia of cultural history.
View Article and Find Full Text PDFMiniaturized thermal purge-and-trap device combined with self-calibration colorimetric/SERS dual-model optical sensors for highly rapid and selective detection of sulfur dioxide in wine.
Food Chem X
January 2025
Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
Herein, the miniaturized thermal purge-and-trap (MTPT) device combined with self-calibration colorimetric/surface-enhanced Raman spectroscopy (SERS) dual-model optical sensors were designed for effective analysis of sulfur dioxide (SO) in wine. The SO can be rapidly separated from wine and enriched by MTPT device, ensuring colorimetric/SERS dual-model optical sensing based on Karl Fischer reaction. The high separation efficiency of miniaturized MTPT device combined with self-calibration of dual-model optical sensors significantly alleviate matrix interference and improve the detection accuracy.
View Article and Find Full Text PDFImpact of combined grape maturity and selected on flavor profiles of young 'cabernet sauvignon' wines.
Food Chem X
January 2025
College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China.
Grape maturity and yeast strains are crucial to determining young wine quality. This study evaluates the impact of three grape maturity levels with sugar contents of 22, 25, and 28°Brix combined with two strains selected from distinct terroirs on the Cabernet Sauvignon wine profile in the Ningxia Qingtongxia region in China. Physicochemical parameters and volatile aroma compounds were analyzed and quantitative descriptive analysis was performed on wine samples.
View Article and Find Full Text PDFDiscrimination of Healthy and -Infected Grapes Using Untargeted Metabolomic Analysis with Direct Electrospray Ionization Mass Spectrometry.
J Agric Food Chem
January 2025
Gulbali Institute, Charles Sturt University, Wagga Wagga, New South Wales 2678, Australia.
infections of grapes significantly reduce yield and quality and increase phenolic compound oxidation, resulting in color loss, off-flavors, and odors in wine. In this study, metabolites were extracted from grape homogenates comprising healthy or infected grapes from different vintages, cultivars, regions, and maturity stages. Samples were randomly analyzed by direct injection into an ion trap mass spectrometer, with data collected from 50 to 2000 / for 1 min.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!