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Implementing Dynamic Headspace With SPME Sampling of Virgin Olive Oil Volatiles: Optimization, Quality Analytical Study, and Performance Testing.
J Agric Food Chem. 2019 Feb 20; 67(7):2086-2097.JA

Abstract

Competition and interaction phenomena among volatiles during their adsorption process by solid phase microextraction (SPME) fibers in static headspace sampling procedure (SHS) cast doubt on its ability to quantify virgin olive oil volatiles. SPME fibers being excellent traps, their use was analyzed with a new device allowing the concentration of volatiles in a dynamic headspace sampling procedure (DHS). A central composite experimental design optimized the main variables of the device (4 g sample weight, 40 °C temperature, 150 mL/min flow rate, 50 min adsorption time), while values of the analytical quality control parameters of the method (repeatability, limits of detection and quantification, working range, sensitivity, and resolution) were compared with those ones from static headspace. DHS shows better precision results for aldehydes and alcohols than SHS and allowed analyzing higher concentrations with no problem of saturation. In 19 of 28 compounds analyzed in 50 samples the chromatographic areas were higher when running DHS. The concentration values of volatile compounds in these samples after applying SHS and DHS are discussed together with the ability of the new method for distinguishing virgin olive oil by their categories (extra virgin, virgin, and lampante) by the volatiles quantified in commercial oils.

Authors+Show Affiliations

Instituto de la Grasa (CSIC) , Campus Universidad Pablo de Olavide , Edificio 46, Ctra. de Utrera, km. 1 , 41013 Sevilla , Spain.Instituto de la Grasa (CSIC) , Campus Universidad Pablo de Olavide , Edificio 46, Ctra. de Utrera, km. 1 , 41013 Sevilla , Spain. School of Chemistry , Aristotle University of Thessaloniki , 54124 Thessaloniki , Greece.Instituto de la Grasa (CSIC) , Campus Universidad Pablo de Olavide , Edificio 46, Ctra. de Utrera, km. 1 , 41013 Sevilla , Spain.Instituto de la Grasa (CSIC) , Campus Universidad Pablo de Olavide , Edificio 46, Ctra. de Utrera, km. 1 , 41013 Sevilla , Spain.Department of Analytical Chemistry , Universidad de Sevilla , 41012 Sevilla , Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30672272

Citation

Oliver-Pozo, Celia, et al. "Implementing Dynamic Headspace With SPME Sampling of Virgin Olive Oil Volatiles: Optimization, Quality Analytical Study, and Performance Testing." Journal of Agricultural and Food Chemistry, vol. 67, no. 7, 2019, pp. 2086-2097.
Oliver-Pozo C, Trypidis D, Aparicio R, et al. Implementing Dynamic Headspace With SPME Sampling of Virgin Olive Oil Volatiles: Optimization, Quality Analytical Study, and Performance Testing. J Agric Food Chem. 2019;67(7):2086-2097.
Oliver-Pozo, C., Trypidis, D., Aparicio, R., García-González, D. L., & Aparicio-Ruiz, R. (2019). Implementing Dynamic Headspace With SPME Sampling of Virgin Olive Oil Volatiles: Optimization, Quality Analytical Study, and Performance Testing. Journal of Agricultural and Food Chemistry, 67(7), 2086-2097. https://doi.org/10.1021/acs.jafc.9b00477
Oliver-Pozo C, et al. Implementing Dynamic Headspace With SPME Sampling of Virgin Olive Oil Volatiles: Optimization, Quality Analytical Study, and Performance Testing. J Agric Food Chem. 2019 Feb 20;67(7):2086-2097. PubMed PMID: 30672272.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Implementing Dynamic Headspace With SPME Sampling of Virgin Olive Oil Volatiles: Optimization, Quality Analytical Study, and Performance Testing. AU - Oliver-Pozo,Celia, AU - Trypidis,Dimitrios, AU - Aparicio,Ramón, AU - García-González,Diego L, AU - Aparicio-Ruiz,Ramón, Y1 - 2019/02/08/ PY - 2019/1/24/pubmed PY - 2019/3/5/medline PY - 2019/1/24/entrez KW - dynamic headspace KW - gas chromatography KW - internal quality control KW - solid phase microextraction KW - virgin olive oil KW - volatile compounds SP - 2086 EP - 2097 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 67 IS - 7 N2 - Competition and interaction phenomena among volatiles during their adsorption process by solid phase microextraction (SPME) fibers in static headspace sampling procedure (SHS) cast doubt on its ability to quantify virgin olive oil volatiles. SPME fibers being excellent traps, their use was analyzed with a new device allowing the concentration of volatiles in a dynamic headspace sampling procedure (DHS). A central composite experimental design optimized the main variables of the device (4 g sample weight, 40 °C temperature, 150 mL/min flow rate, 50 min adsorption time), while values of the analytical quality control parameters of the method (repeatability, limits of detection and quantification, working range, sensitivity, and resolution) were compared with those ones from static headspace. DHS shows better precision results for aldehydes and alcohols than SHS and allowed analyzing higher concentrations with no problem of saturation. In 19 of 28 compounds analyzed in 50 samples the chromatographic areas were higher when running DHS. The concentration values of volatile compounds in these samples after applying SHS and DHS are discussed together with the ability of the new method for distinguishing virgin olive oil by their categories (extra virgin, virgin, and lampante) by the volatiles quantified in commercial oils. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/30672272/Implementing_Dynamic_Headspace_With_SPME_Sampling_of_Virgin_Olive_Oil_Volatiles:_Optimization_Quality_Analytical_Study_and_Performance_Testing_ L2 - https://doi.org/10.1021/acs.jafc.9b00477 DB - PRIME DP - Unbound Medicine ER -