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Joseph BEJJANI

Enseignant Cadré - Professeur associé - HDR in Chemistry (habilitation to supervise research)

Faculty of Science (FS)
Laboratory of Metrology and Isotope Fractionation (LMFI)

(+961) 1 421 000 ext joseph.bejjani@usj.edu.lb

Joseph Bejjani is a Professor at the Faculty of Science of Saint Joseph University of Beirut. He specializes in molecular chemistry, notably organic, organometallic, and asymmetric synthesis. He obtained his HDR (habilitation to supervise research), PhD, and Master’s degree from Sorbonne University (Paris VI) and a Master (M1) in Chemistry from the Lebanese University. Professor Bejjani also possesses expertise in data analysis, metrology (budgeting uncertainty, calibration, and verification of measurement equipment), and quality management (ISO 17025, ISO 9001, and quality assurance of university programs). His current research focuses on developing isotopic, lipidomic, and metabolomic methods, primarily using NMR spectroscopy, to identify biomarkers for food authentication and medical applications. The results of his work have appeared in several leading scientific journals.

• HDR in Chemistry
• PHD in Molecular Chemistry
• DEA in Organic and Bioorganic Chemistry

Basics of stereochemistry and organic chemistry

Transpositions and rearrangements

Organometallic chemistry

Total synthesis and activation methods

NMR spectroscopy

Instrumental analysis methods

Data analysis

Quality Approach Committee Coordinator
Member of the USJ Quality Assurance Unit
Member of the committee responsible for preparing a QMS model for the USJ Faculties
“Training of business start-up advisors” (a one-week training course)
“Coaching Program” for entrepreneurs. This is a five-day training course and two assistance sessions in the coaching of two startups.
Member of the committee of the CMI program (Master's Degree in Engineering) in Industrial Technology offered by the French network FIGURE
Quality Manager of the Master in Industrial Technology certified ISO 9001
Associate Professor
Establishment, with colleagues from the Faculty of Science (USJJ), of the QMS (ISO 17025) for the laboratories of the Chambers of Commerce, Industry and Agriculture (CCIA) of Lebanon. In the same project, preparation of the technical procedures for chemical analyzes subject to accreditation.
Training on interlaboratory comparisons within the framework of the ISO 17025 Standard
Maître de conférences
Technical Manager of the Metrology and Isotopic Fractionation Laboratory (LMFI), a Laboratory that was accredited by COFRAC according to the ISO 17025 standard under number 1-2192.
Five-day training on the use and maintenance of an NMR spectrometer
Five-day training on the SNIF-NMR ® method (isotope method for verifying the authenticity of foods)
Training on determining measurement uncertainties within the framework of the ISO 17025 Standard
Advanced training on the ISO 17025 standard
Basic training on Standard 17025

Engineering and Technology, Sciences

Isotopic and Metabolomic NMR for Food Authentication

L. Haddad, I. Louvet, T. Rizk, S. Akoka, G. S. Remaud, and J. Bejjani (2023). Biomarkers for cheese authentication by detailed and fast gas chromatographic profiling of triacylglycerol fatty acids. Food Chemistry, 422, 136251.

L. Haddad, J. Francis, T. Rizk, S. Akoka, G. S. Remaud, and J. Bejjani (2022). Cheese characterization and authentication through lipid biomarkers obtained by high-resolution 1H NMR profiling. Food Chemistry, 383, 132434.

G. Hajjar, L. Haddad, T. Rizk, S. Akoka, and J. Bejjani (2021). High-resolution 1H NMR profiling of triacylglycerols as a tool for authentication of food from animal origin: Application to hen egg matrix. Food Chemistry, 360, 130056.

L. Haddad, S. Renou, G. S. Remaud, T. Rizk, J. Bejjani, and S. Akoka (2021). A precise and rapid isotopomic analysis of small quantities of cholesterol at natural abundance by optimized 1H-13C 2D NMR. Analytical and Bioanalytical Chemistry, 413, 1521-1532. Paper in Forefront

G. Hajjar, T. Rizk, J. Bejjani, and S. Akoka (2020). Metabisotopomics of triacylglycerols from animal origin: A simultaneous metabolomic and isotopic profiling using 13C INEPT. Food Chemistry, 315, 126325.

G. Hajjar, N. Merchak, C. Daniel, T. Rizk, S. Akoka, and J. Bejjani (2020). Improved lipid mixtures profiling by 1H NMR using reference lineshape adjustment and deconvolution techniques. Talanta, 208, 120475.

G. Hajjar, T. Rizk, S. Akoka, and J. Bejjani (2019). Cholesterol, a powerful 13C isotopic biomarker. Analytica Chimica Acta, 1089, 155-122.

N. Merchak, T. Rizk, V. Silvestre, G. S. Remaud, J. Bejjani, and S. Akoka (2018). Olive oil characterization and classification by 13C NMR with a polarization transfer technique: A comparison with gas chromatography and 1H NMR. Food Chemistry, 245, 717-723.

N. Merchak, V. Silvestre, D. Loquet, T. Rizk, S. Akoka, and J. Bejjani (2017). A strategy for simultaneous determination of fatty acid composition, fatty acid position, and position-specific isotope contents in triacylglycerol matrices by 13C-NMR. Analytical and Bioanalytical Chemistry, 409, 307-315.

N. Merchak, E. El Bacha, R. Bou Khouzam, T. Rizk, S. Akoka, and J. Bejjani (2017). Geoclimatic, morphological, and temporal effects on Lebanese olive oils composition and classification: A 1H NMR metabolomic study. Food Chemistry, 217, 379-388.

N. Merchak, V. Silvestre, L. Rouger, P. Giraudeau, T. Rizk, J. Bejjani, and S. Akoka (2016). Precise and rapid isotopomic analysis by 1H–13C 2D NMR: Application to triacylglycerol matrices. Talanta, 156, 239-244.

N. Merchak, J. Bejjani, T. Rizk, V. Silvestre, G. S. Remaud, and S. Akoka (2015). 13C isotopomics of triacylglycerols using NMR with polarization transfer techniques. Analytical Methods, 7, 4889-4891.

J. Bejjani, M. Balabane, & T. Rizk (2014). A sharper characterization of the geographical origin of Lebanese wines by a new interpretation of the hydrogen isotope ratios of ethanol. Food Chemistry, 165, 134-139.

J. Bejjani, C. Botuha, F. Chemla, F. Ferreira, S. Magnus, & A. Pérez-Luna (2012). Metallotropic Equilibrium and Configurational Stability of 3-Chloro-1-(trimethylsilyl)- propargyl and -allenyl Metals: Comparative Study among Lithium, Titanium, and Zinc. Organometallics, 31, 4876-4885.

F. Ferreira, A. Denichoux, F. Chemla, & J. Bejjani (2004). Highly Diastereoselective Syntheses of Propargylic Acid and Homopropargylic Systems. Synlett, 12, 2051-2065.

J. Bejjani, F. Chemla, & M. Audouin (2003). N-Trityl-prolinal: An Efficient Building Block for the Stereoselective Synthesis of Proline-Derived Amino Alcohols. Journal of Organic Chemistry, 68, 9747-9752.

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