Tags

Type your tag names separated by a space and hit enter

Analysis of Volatile Markers for Virgin Olive Oil Aroma Defects by SPME-GC/FID: Possible Sources of Incorrect Data.
J Agric Food Chem. 2015 Dec 09; 63(48):10477-83.JA

Abstract

The need to explain virgin olive oil (VOO) aroma descriptors by means of volatiles has raised interest in applying analytical techniques for trapping and quantitating volatiles. Static headspace sampling with solid phase microextraction (SPME) as trapping material is one of the most applied solutions for analyzing volatiles. The use of an internal standard and the determination of the response factors of the main volatiles seem to guarantee the correct determination of volatile concentrations in VOOs by SPME-GC/FID. This paper, however, shows that the competition phenomena between volatiles in their adsorption to the SPME fiber, inherent in static headspace sampling, may affect the quantitation. These phenomena are more noticeable in the particular case of highly odorant matrices, such as rancid and vinegary VOOs with high intensity of defect. The competition phenomena can modify the measurement sensitivity, which can be observed in volatile quantitation as well as in the recording of internal standard areas in different matrices. This paper analyzes the bias of the peak areas and concentrations of those volatiles that are markers for each sensory defect of VOOs (rancid, vinegary, musty, and fusty) when the intensity and complexity of aroma are increased. Of the 17 volatile markers studied in this work, 10 presented some anomalies in the quantitation in highly odorant matrices due the competition phenomena. However, quantitation was not affected in the concentration ranges at which each volatile marker is typically found in the defective oils they were characteristic of, validating their use as markers.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Oliver-Pozo C
Instituto de la Grasa, (CSIC) , Campus University Pablo de Olavide, Building 46, Ctra. de Utrera, km. 1, E-41013 Sevilla, Spain.
Aparicio-Ruiz R
Instituto de la Grasa, (CSIC) , Campus University Pablo de Olavide, Building 46, Ctra. de Utrera, km. 1, E-41013 Sevilla, Spain.
Romero I
Instituto de la Grasa, (CSIC) , Campus University Pablo de Olavide, Building 46, Ctra. de Utrera, km. 1, E-41013 Sevilla, Spain.
García-González DL
Instituto de la Grasa, (CSIC) , Campus University Pablo de Olavide, Building 46, Ctra. de Utrera, km. 1, E-41013 Sevilla, Spain.

MeSH

AdultFemaleGas Chromatography-Mass SpectrometryHumansMaleOdorantsOlive OilSolid Phase MicroextractionVolatile Organic CompoundsVolatilization

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26568468

Citation

Oliver-Pozo, Celia, et al. "Analysis of Volatile Markers for Virgin Olive Oil Aroma Defects By SPME-GC/FID: Possible Sources of Incorrect Data." Journal of Agricultural and Food Chemistry, vol. 63, no. 48, 2015, pp. 10477-83.
Oliver-Pozo C, Aparicio-Ruiz R, Romero I, et al. Analysis of Volatile Markers for Virgin Olive Oil Aroma Defects by SPME-GC/FID: Possible Sources of Incorrect Data. J Agric Food Chem. 2015;63(48):10477-83.
Oliver-Pozo, C., Aparicio-Ruiz, R., Romero, I., & García-González, D. L. (2015). Analysis of Volatile Markers for Virgin Olive Oil Aroma Defects by SPME-GC/FID: Possible Sources of Incorrect Data. Journal of Agricultural and Food Chemistry, 63(48), 10477-83. https://doi.org/10.1021/acs.jafc.5b03986
Oliver-Pozo C, et al. Analysis of Volatile Markers for Virgin Olive Oil Aroma Defects By SPME-GC/FID: Possible Sources of Incorrect Data. J Agric Food Chem. 2015 Dec 9;63(48):10477-83. PubMed PMID: 26568468.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Analysis of Volatile Markers for Virgin Olive Oil Aroma Defects by SPME-GC/FID: Possible Sources of Incorrect Data. AU - Oliver-Pozo,Celia, AU - Aparicio-Ruiz,Ramón, AU - Romero,Inmaculada, AU - García-González,Diego L, Y1 - 2015/11/20/ PY - 2015/11/17/entrez PY - 2015/11/17/pubmed PY - 2016/8/11/medline KW - SPME-GC/FID KW - competition phenomena KW - sensory defects KW - virgin olive oil KW - volatile compounds SP - 10477 EP - 83 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 63 IS - 48 N2 - The need to explain virgin olive oil (VOO) aroma descriptors by means of volatiles has raised interest in applying analytical techniques for trapping and quantitating volatiles. Static headspace sampling with solid phase microextraction (SPME) as trapping material is one of the most applied solutions for analyzing volatiles. The use of an internal standard and the determination of the response factors of the main volatiles seem to guarantee the correct determination of volatile concentrations in VOOs by SPME-GC/FID. This paper, however, shows that the competition phenomena between volatiles in their adsorption to the SPME fiber, inherent in static headspace sampling, may affect the quantitation. These phenomena are more noticeable in the particular case of highly odorant matrices, such as rancid and vinegary VOOs with high intensity of defect. The competition phenomena can modify the measurement sensitivity, which can be observed in volatile quantitation as well as in the recording of internal standard areas in different matrices. This paper analyzes the bias of the peak areas and concentrations of those volatiles that are markers for each sensory defect of VOOs (rancid, vinegary, musty, and fusty) when the intensity and complexity of aroma are increased. Of the 17 volatile markers studied in this work, 10 presented some anomalies in the quantitation in highly odorant matrices due the competition phenomena. However, quantitation was not affected in the concentration ranges at which each volatile marker is typically found in the defective oils they were characteristic of, validating their use as markers. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/26568468/Analysis_of_Volatile_Markers_for_Virgin_Olive_Oil_Aroma_Defects_by_SPME_GC/FID:_Possible_Sources_of_Incorrect_Data_ DB - PRIME DP - Unbound Medicine ER -