Research Units
Analytical Chemistry Unit


Juan Francisco García Reyes

Responsable de la Unidad

Analytical Chemistry Unit

PAIDI Group in the Unit:

This unit investigates the development and application of quality control methodologies aimed at the detection of organic contaminants (such as pesticide residues) and other compounds of interest in food industry, specially, in olive oil, olives and by-products of this sector. For this reason, one of its fundamental lines of research consists of developing scientific instruments to improve the productive capacity of analysis laboratories.

Trace-Level Determination of Polycyclic Aromatic Hydrocarbons in Dairy Products Available in Spanish Supermarkets by Semi-Automated Solid-Phase Extraction and Gas Chromatography–Mass Spectrometry Detection    

Palacios Colón L., Rascón A.J. and Ballesteros E.              

Foods. Volume 11, Issue 5, 2022                             

DOI: 10.3390/foods11050713

A sensitive, robust method for determining natural and synthetic hormones in surface and wastewaters by continuous solid-phase extraction–gas chromatography–mass spectrometry        

Chafi S. and Ballesteros E.          

Environmental Science and Pollution Research. 2022                    

DOI: 10.1007/s11356-022-19577-1

Occurrence and distribution of endocrine disrupting chemicals and pharmaceuticals in the river Bouregreg (Rabat, Morocco)           

Chafi S., Azzouz A. and Ballesteros E.    

Chemosphere. Volume 287, 2022                           

DOI: 10.1016/j.chemosphere.2021.132202

Direct wine profiling by mass spectrometry (MS): A comparison of different ambient MS approaches             

Bartella L., Bouza M., Rocío-Bautista P., Di Donna L., García-Reyes J.F. and Molina-Díaz A.         

Microchemical Journal. Volume 179, 2022                          

DOI: 10.1016/j.microc.2022.107479

Measuring the mass of an electron: an undergraduate laboratory experiment with high resolution mass spectrometry               

Bouza M., Gilbert-López B., García-Reyes J.F. and Rodríguez Ortega P.G.

Chemistry Teacher International. Volume 4, Issue 1, 2022, pages 15-22               

DOI: 10.1515/cti-2021-0016

Development of a capillary electrophoresis method for the separation of flavonolignans in silymarin complex          

Riasová P., Jenčo J., Moreno-González D., Vander Heyden Y., Mangelings D., Polášek, M. and Pavel J.Á.Č.      

Electrophoresis . Volume 43, 2022, pages 930-938           

DOI: 10.1002/elps.202100212

Assessment of a specific sample cleanup for the multiresidue determination of veterinary drugs and pesticides in salmon using liquid chromatography/tandem mass spectrometry        

Castilla-Fernández D., Moreno-González D., Bouza M., Saez-Gómez A., Ballesteros E., García-Reyes J.F. and Molina-Díaz A.               

Food Control. Volume 130, 2021                             

DOI: 10.1016/j.foodcont.2021.108311

Determination of atropine and scopolamine in spinach-based products contaminated with genus Datura by UHPLC–MS/MS               

Castilla-Fernández D., Moreno-González D., García-Reyes J.F., Ballesteros E. and Molina-Díaz  A.         

Food Chemistry               . Volume 347, 2021                        

DOI: 10.1016/j.foodchem.2021.129020

Validation and use of an accurate, sensitive method for sample preparation and gas chromatography–mass spectrometry determination of different endocrine-disrupting chemicals in dairy products               

Colón L.P., Rascón, A.J., Hejji L., Azzouz A. and Ballesteros E.   

Foods. Volume 10, Issue 5, 2021                             

DOI: 10.3390/foods10051040

A multi-residue method for determining twenty-four endocrine disrupting chemicals in vegetables and fruits using ultrasound-assisted solid–liquid extraction and continuous solid-phase extraction   

Hejji L., Azzouz A., Colón L.P., Souhail B. and Ballesteros E.        

Chemosphere. Volume 263, 2021                           

DOI: 10.1016/j.chemosphere.2020.128158

Worldwide survey of pesticide residues in citrus-flavored soft drinks               

Castilla-Fernández D., Moreno-González D., Gilbert-López B., García-Reyes J.F. and Molina-Díaz A.     

Food Chemistry. Volume 365, 2021                        

DOI: 10.1016/j.foodchem.2021.130486

Evaluation of a novel controlled-atmosphere flexible microtube plasma soft ionization source for the determination of BTEX in olive oil by headspace-gas chromatography/mass spectrometry

David Moreno-González, Delia Castilla–Fernández, Pascal Vogel, Guanghui Niu, Sebastian Brandt, Carolin Drees, Juan F. García-Reyes, Antonio Molina-Díaz, Joachim Franzkea

Analytica Chimica Acta. Volume 1179, 22 September 2021, 338835

DOI: 10.1016/j.aca.2021.338835

Study of Controlled Atmosphere Flexible Microtube Plasma Soft Ionization Mass Spectrometry for Detection of Volatile Organic Compounds as Potential Biomarkers in Saliva for Cancer

Pascal Vogel, Constantinos Lazarou, Odhisea Gazeli, Sebastian Brandt, Joachim Franzke, and David Moreno-González

Analytical Chemistry. 2020, 92, 14, 9722–9729

DOI: 10.1021/acs.analchem.0c01063

Standardization of Sandwich-Structured Cu-Glass Substrates Embedded in a Flexible Diode Laser-Plasma Interface for the Detection of Cholesterol

Alexander Knodel, Ulrich Marggraf, Norman Ahlmann, Sebastian Brandt, Daniel Foest, Bienvenida Gilbert-López, and Joachim Franzke

Analytical Chemistry. 2020, 92, 6, 4663–4671

DOI: 10.1021/acs.analchem.0c00311

Direct analysis of olive oil and other vegetable oils by mass spectrometry: A review

Miriam Beneito-Cambra, David Moreno-González, Juan F. García-Reyes, Marcos Bouza, Bienvenida Gilbert-López, Antonio Molina-Díaz

Trends in Analytical Chemistry. Volume 132, November 2020, 116046

DOI: 10.1016/j.trac.2020.116046

Detection and Evaluation of Lipid Classes and Other Hydrophobic Compounds Using a Laser Desorption/Plasma Ionization Interface

Alexander Knodel, Daniel Foest, Sebastian Brandt, Norman Ahlmann, Ulrich Marggraf, Bienvenida Gilbert-López, and Joachim Franzke

Analytical Chemistry. 2020, 92, 22, 15212–15220

DOI: 10.1021/acs.analchem.0c03839

Use of semi-automated continuous solid-phase extraction and gas chromatography-mass spectrometry for the determination of polycyclic aromatic hydrocarbons in alcoholic and non-alcoholic drinks from Andalucia (Spain)    

A.J. Rascón; A. Azzouz; Ballesteros-Tribaldo, Evaristo Antonio

Journal of the Science of Food and Agriculture, 99: 117-125 (2019)

DOI: 10.1002/jsfa.9279

Nanomaterial-based electrochemical sensors for the detection of neurochemicals in biological matrices

Azzouz; Ballesteros-Tribaldo, Evaristo Antonio; K.Y. Goud; N. Raza; S. Lee; J. Hong; A. Deep; K. Kim

Trends in Analytical Chemistry, 110: 15-34 (2019)

DOI: 10.1016/j.trac.2018.08.002

Critical assessment of two sample treatment methods for multiresidue determination of veterinary drugs in milk by UHPLC-MS/MS

Castilla, Delia; Moreno-González, David; M. Beneito-Cambra; Molina-Díaz, Antonio

Analytical and Bioanalytical Chemistry, 411: 1433-1442 (2019)

DOI: 10.1007/s00216-019-01582-y

Use of a modified QuEChERS method for the determination of mycotoxin residues in edible nuts by nano flow liquid chromatography high resolution mass spectrometry

Alcántara-Durán; Moreno-González, David; García-Reyes, Juan Francisco; Molina-Díaz, Antonio

Food Chemistry, 279: 144-149 (2019)

DOI: 10.1016/j.foodchem.2018.11.149

Phytochemical composition of Ecballium elaterium extracts with antioxidant and anti-inflammatory activities: comparison among leaves, flowers and fruits extracts

Bourebaba; Gilbert-López, Bienvenida N. Oukil; F. Bedjou

Arabian Journal of Chemistry (2019)

DOI: 10.1016/j.arabjc.2018.11.004

Detection of multiclass explosives and related compounds in soil and water by liquid chromatography-dielectric barrier discharge ionization-mass spectrometry

Gilbert-López, Bienvenida; F.J. Lara-Ortega; J. Robles-Molina; S. Brandt; A. Schütz; Moreno-González, David; García-Reyes, Juan Francisco; Molina-Díaz, Antonio; J. Franzke

Analytical and Bioanalytical Chemistry, 41: 4785-4796 (2019)

DOI: 10.1007/s00216-019-01627-2

Optimization of microwave-assisted extraction recovery of bioactive compounds from Origanum glandulosum and Thymus fontanesii

Nabet; Gilbert-López, Bienvenida; K. Madani; M. Herrero; M.E. Ibáñez-Ezequiel; J.A. Mendiola

Industrial Crops and Products, 129: 395-404 (2019)

DOI: 10.1016/j.indcrop.2018.12.032

Direct olive oil analysis by mass spectrometry: A comparison of different ambient ionization methods

Felipe J Lara-Ortega, Miriam Beneito-Cambra, José Robles-Molina, Juan F García-Reyes, Bienvenida Gilbert-López, Antonio Molina-Díaz

Talanta. Volume 180, 1 April 2018, Pages 168-175

DOI: 10.1016/j.talanta.2017.12.027

Experimental and theoretical determination of pesticide processing factors to model their behavior during virgin olive oil production

Rafael López-Blanco, David Moreno-González, Rocío Nortes-Méndez, Juan F. García-Reyes, Antonio Molina-Díaz, Bienvenida Gilbert-López

Food Chemistry. Volume 239, 15 January 2018, Pages 9-16

DOI: 10.1016/j.foodchem.2017.06.086

Multi-residue pesticide analysis in virgin olive oil by nanoflow liquid chromatography high resolution mass spectrometry

David Moreno-González, Jaime Alcántara-Durán, Silvina M Addona, Miriam Beneito-Cambra

Journal of Chromatography A. Volume 1562, 10 August 2018, Pages 27-35

DOI: 10.1016/j.chroma.2018.05.053

Multiresidue determination of polycyclic aromatic hydrocarbons in edible oils by liquid-liquid extraction–solid-phase extraction–gas chromatography–mass spectrometry

Andrés J. Rascón, Abdelmonaim Azzouz, Evaristo Ballesteros

Food Control. Volume 94, December 2018, Pages 268-275

DOI: 10.1016/j.foodcont.2018.07.015

Use of dielectric barrier discharge ionization to minimize matrix effects and expand coverage in pesticide residue analysis by liquid chromatography-mass spectrometry

Felipe J Lara-Ortega, José Robles-Molina, Sebastian Brandt, Alexander Schütz, Bienvenida Gilbert-López, Antonio Molina-Díaz, Juan F García-Reyes, Joachim Franzke

Analytica Chimica Acta. Volume 1020, 22 August 2018, Pages 76-85

DOI: 10.1016/j.aca.2018.02.077

Instrumento estratégico hacia un tejido productivo,  Agroalimentario, Moderno, Innovador y  Sostenible: motor del territorio rural andaluz: Desarrollo de bioindicadores que determinen el perfil físico-químico y sensorial de los aceites de oliva vírgenes

Entidad Financiadora: Campus de Excelencia Internacional en Agroalimentación. Proyecto singular AgroMIS

Referencia: A1122062E0_AGROMIS ceiA3-UCO 2019

Investigador principal: Antonio Molina Díaz

Año de inicio: 2020

Presupuesto: 35.000,00 €


Implementación de nuevos dispositivos de ionización por descarga de barrera dieléctrica en metabolómica y seguridad alimentaria

Entidad Financiadora: Junta de Andalucía-Universidad de Jaén (Proyecto FEDER-UJA)

Referencia: 1264521

Investigador principal: Antonio Molina Díaz

Año de inicio: 2020

Presupuesto: 79.962,82 €


Clasificación de aceites de oliva de diferentes categorías comerciales mediante espectrometría de masas de alta resolución y aproximaciones de metabolómica no dirigida

Entidad Financiadora: Junta de Andalucía-Universidad de Jaén (Proyecto FEDER-UJA)

Referencia: 1263809

Investigador principal: David Moreno González

Año de inicio: 2020

Presupuesto: 97.000,00 €


Novel approaches to promote the sustainability of Olive groves in the Mediterranean (SUSTAINOLIVE)         

Entidad financiadora: Convocatoria Europea PRIMA (Partnership for Research and Innovation in the Mediterranean Area). Cofinanciado con fondos Horizon 2020 Framework Programme of the European Union

Referencia: Farming System 9

Investigador principal: Roberto García Ruiz                  

Año de inicio: 2019

Presupuesto: 2.032.690,17 €


Desarrollo de nuevas aproximaciones basadas en basadas en cromatografía-espectrometría de masas para la resolución de problemas de gran interés social en el campo de la calidad y la seguridad alimentaria del aceite de oliva

Entidad Financiadora: Ayudas a la I+D+i, en el ámbito del Plan Andaluz de Investigación, Desarrollo e Innovación, PAIDI

Referencia: P18-RT-1211

Investigador principal: Antonio Molina Díaz

Año de inicio: 2020

Presupuesto: 140.500,00 €


Advancing mass spectrometry: Ionization and applications

Entidad Financiadora: Acciones de dinamización de carácter internacional “EUROPA INVESTIGACIÓN”. Programa Estatal de investigación, desarrollo e innovación orientada a los retos de la sociedad

Referencia: EUIN2017-88337

Investigador principal: Juan Francisco García Reyes

Año de inicio: 2018

Presupuesto: 22.500,00 €


Twinning in atmospheric Plasma science and applications (TImPANI)

Entidad Financiadora: Horizonte 2020. Prorama Twinning of research institutions

Referencia: H2020-EU.4.b. - 810686

Investigador principal: George Georgiou

Año de inicio: 2018

Presupuesto: 999.625,00 €


Nuevas aproximaciones experimentales a la solución de las limitaciones actuales de la cromatografía de líquidos/espectrometría de masas (LC-MS) en análisis de contaminantes

Entidad Financiadora: Concesión de ayudas a «Proyectos de I+D+i», en el marco del Programa Estatal de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I+D+i y del Programa Estatal de I+D+i Orientada a los Retos de la Sociedad, del Plan Estatal de Investigación Científica y Técnica y de Innovación 2015

Referencia: CTQ-2015-71321-P

Investigadores principales: Antonio Molina Díaz y Juan Francisco García Reyes

Año de inicio: 2016

Presupuesto: 67.518,00 €

Private companies and public institutions related to the olive oil and olive sector

Technical advice in chemistry

unit members


Juan Francisco García Reyes

Responsable de la unidad

Juan Francisco García Reyes

Head of Unit

Molina Díaz

Senior Researcher

Evaristo Antonio
Ballesteros Tribaldo

Senior Researcher

Gilbert López

Senior Researcher

Moreno González


Castilla Fernández


Bouza Areces


Rocío Bautista


Andrés Jesús
Rascón López


Ana Belén
Martínez Piernas


Fernández García


Caño Carrillo


García Martínez


Jose Alfonso
Tuñón López


research units

The INUO is structured into Research Units that bring together an amalgamation of researchers, which although they may belong to different subareas of knowledge, the name of each Unit corresponds to the main lines of research characteristic of the Institute and are as follows:

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