Maria Gabriela Bernardo Gil

Associate Professor with Habilitation

Departamento de Engenharia Química
Instituto Superior Técnico
Universidade Técnica de Lisboa
Av. Rovisco Pais
P - 1049-001 Lisboa
Portugal
phone: (+351) 21 841 75 82
fax: (+351) 21 841 91 76
email: gbernardo.gil  

Graduation in Chemical Engineering, Instituto Superior Técnico (1972). 
PhD. in Engineering Sciences, Universidade do Minho (L. J. S. Soares, 1985).
Pos-doc, University of Birmingham (M. B. King, 1987)
Agregação (Habilitation), Instituto Superior Técnico (2002).

She is a member of the Environmental and EcoProcess Engineering Research Group of the Center for Biological and Chemical Engineering (CEBQ).

The research interests of Gabriela Bernardo-Gil are in the areas of Distillation and Extraction, including modelling and simulation.

She has conducted research on phase equilibrium (VLLE), plate efficiencies on Oldershaw columns, efficiencies of structured packings, modelling and simulation of batch distillation and control. The validation of models for distillation has been made with components of pine resin and derivatives.

She is researching on the extraction of natural products, namely supercritical and nearcritical extraction of edible oils; and extraction of flavours, antioxidants and pigments from plant material for the food and cosmetic industries. She is also using steam distillation, Clevenger distillation and solvent extraction (Soxhlet) to compare the results in terms of yields and composition of the extracts. 

She also has some interests on the extraction of alkaloids and lipids from lupine and on the supercritical extraction of PCBs and DDT from sediments and fish.

Academic Duties (2008/2009):

 


Selected Publications

Papers

Costa, P., Grosso, C., Gonçalves, S., Andrade, P. B., Valentão, P., Bernardo-Gil, M. G., Romano A., “Supercritical fluid extraction and hydrodistillation for the recovery of bioactive compounds from Lavandula viridis L’Her.", Food Chemistry, 135, 112-121, 2012.

Pereira, P.C., Cebola, M-J., Bernardo-Gil, M.G., “Comparison of antioxidant activity in extracts of Myrtus communis L.obtained by SFE vs solvent extraction", J. Environm. Sci. Eng A 1, 115-120, 2012.

Grevenstuk, T., Gonçalves, S., Nogueira. J.M.F., Bernardo-Gil, M.G., Romano, A., "Recovery of high purity plumbagin from Drosera intermedia", Ind. Crops and Products, 35, 257-260, 2012, 10.1016/j.indcrop.2011.07.003.

Bernardo-Gil, M. G., Roque, R., Roseiro, L. B., Duarte, L. C., Girio, F., Esteves, P., "Supercritical extraction of carob kibbles (Ceratonia siliqua L.)", J. Supercritical Fluids, 59, 36-42, 2011, doi; 10.1016/j.supflu.2011.08.007.

Pereira, P.C., Cebola, M-J., Bernardo-Gil, M.G., “Evolution of the Yields and Composition of Essential Oil from Portuguese Mirtle (Myrtus communis L.) through the Vegetative Cycle", Molecules, 14, 3094-3105, 2009. DOI: 10.3390/molecules14083094.

Esquível, M.M., M., Ribeiro, M.A., Bernardo-Gil, M.G., “Relations between Oxidative Stability and Antioxidant Content in Vegetable Oils Using an Accelerated Oxidation Test – Rancimat ", Chemical Product and Process Modeling, 4 (4), Article 10, 2009.  DOI: 10.2202/1934-2659.1279.

Bernardo-Gil, M.G., Casquilho, M., Esquível, M.M., Ribeiro, M.A., "Supercritical fluid extraction of fig leaf gourd seeds oil: Fatty acids composition and extraction kinetics",  J. Supercritical Fluids, 49, 32-36, 2009, doi:10.1016/j.supflu.2008.12.004    

Bernardo-Gil, M.G., Casquilho, M., "Modeling the Supercritical Fluid Extraction of Hazelnut and Walnut Oils", AIChE J., 53, 2980-2985, 2007, DOI: 10.1002/aic. 11299.

Bernardo-Gil, M.G., Lopes, I.M.G., Casquilho, M., Ribeiro, M.A., Esquível, M.M., Empis, J.M., "Supercritical carbon dioxide extraction of acorn oil",  J. Supercritical Fluids, 40, 344-348, 2007, doi: 10.1016/j.supflu.2006.07.026.

Gouveia, A.F-, Duarte, C., Beirão da Costa, M.L., Leitão, A.E., Bernardo-Gil, M.G., Moldão-Martins, M., "Oxidative stability of olive oil flavoured by Capsicum frutescens supercritical fluid extracts", Eur. J. Lipid Sci. Technol., 108, 421-428, 2006, DOI: 10.1002/ejlt.200500273.

Lopes, I.M.G., Bernardo-Gil, M.G., "Characterisation of acorn oils extracted by hexane and by supercritical carbon dioxide", Eur. J. Lipid Sci. Technol., 107, 12-19, 2005, DOI: 10.1002/ejlt.200401039.

Bernardo-Gil, M.G., Lopes, L.M.C., "Supercritical fluid extraction of Cucurbita ficifolia seed oil", Eur. Food Res. Technol., 219, 593-597, 2004, DOI: 10.1007/s00217-004-0978-2.

Duarte, C., Moldão-Martins, M., Gouveia, A. F.,  Beirão-da-Costa, S., Leitão, E., Bernardo-Gil, M. G., "Supercritical Fluid Extraction of Red Pepper (Capsicum frutescens L.)", J. Supercritical Fluids, 30, 155-161, 2004, DOI: 10.1016/j.suplu.2003.07.001 (abstract).

Antunes, P., Gil, O., Bernardo-Gil, M. G., "Supercritical fluid extraction of organochlorines from fish muscle with different sample preparation", J. Supercritical Fluids, 25, 135-142, 2003, DOI:10.1016/S0896-8446(02)00141-9  (abstract).

Moldão-Martins, M., Bernardo-Gil, M. G., Beirão-da-Costa, M. L, Rouzet, M., "Sensory and chemical evaluation of Thymus zygis L. essential oil and compressed CO2 extracts", Eur. Food Res. Technol., 214, 207-211, 2002, DOI: 10.1007/s00217-001-0451-4.

Oliveira, R., Rodrigues, M. F., Bernardo-Gil, M. G., "Characterization and supercritical carbon dioxide extraction of walnut oil", J. Amer. Oil Chem. Soc., 79, 225-230, 2002.

Bernardo-Gil, M. G., Grenha, J., Santos, J., Cardoso, P., "Supercritical fluid extraction and characterisation of oil from hazelnut", European J. Lipid Sci. Technol., 104, 402-409, 2002 (abstract).

Ribeiro, M.A., Moldão-Martins, M., Esquível, M.M., Bernardo-Gil, M. G., "Extraccion de la Menta con CO2 supercritico. Influencia de las condiciones de extraccion en la actividade antioxidante de los residuos supercriticos", Información Tecnológica (Chile), 13(3), 185-190, 2002.

Bernardo Gil, M. G., Oneto, C., Antunes, P., Rodrigues, M. F., Empis, J.M., "Extraction of lipids from Cherry Seed Oil using supercritical carbon dioxide", Eur. Food Res. Technol., 212, 170-174, 2001 (abstract).

Jones, N.M., Bernardo Gil, M. G., Lourenço, M.G., "Comparison of methodologies for the extraction of tobacco alkaloids", J. of AOAC Intern., 84(2), 309-316, 2001 (abstract).

Ribeiro, M.A., Bernardo-Gil, M. G., Esquível, M.M., "Melissa officinalis L.: Study of Antioxidant Activity in Supercritical Residues", J. Supercritical Fluids, 21, 51-60, 2001, doi:10.1016/S0896-8446(01)00078-X  (abstract).

Moldão-Martins, M., Palavra, A., Beirão da Costa, M.L., Bernardo Gil, M. G., "Supercritical CO2 extraction of Thymus zygis L. subsp. sylvestris aroma", J. Supercritical Fluids, 18, 25-34, 2000 (abstract).

Bernardo-Gil, M.G., Lopes, I., Oliveira, R., Simão, L. "Natural antioxidants from Quercus rotundifolia acorn", Proceedings of 6th Symposium on Renewable Resources for the Chemical Industry, Bona, ISBN 3-7843-3019-3, 501-513, 1999.

Moldão-Martins, M., Bernardo-Gil, M. G., Beirão-da-Costa, M. L, Rouzet, M., "Seasonal variation in yield and composition of Thymus zygis L. subsp. sylvestris essential oil", Flavour and Fragrance J., 14, 177-182, 1999 (abstract).

Esquível, M.M., Bernardo-Gil, M. G., King, M.B., "Mathematical Models for Supercritical Extraction of Olive Husk Oil", J. Supercritical Fluids, 16, 43-58, 1999 (abstract).

de Lucas, A., Rincón, J., Bernardo-Gil, M. G., Esquível, M.M., Gracia, I., Rodrigues, M. F., "Supercritical extraction of Cistus ladanifer", Proceedings of 5th conference on supercritical fluids and their applications, Garda, Itália, 101-108, 1999.

Esquível, M.M., Ribeiro, M.A., Bernardo-Gil, M. G., "Supercritical Extraction of Savory Oil: Study of Antioxidant Activity and Extract Characterisation", J. Supercritical Fluids, 14, 129-138, 1999 (abstract).

Ribeiro, M.A., Lopes, I, Esquível, M. M., Bernardo-Gil, M. G., Empis, J. A., "Comparison of antioxidant activity of plant extracts obtained using supercritical extraction and classical methods", Materials and Natural Products Processing - Actas do 5th Meeting on Supercritical Fluids, Perrut, M. and Subra Ed., ISBN 2-905-267-28-3, 669-674, 1998.

Esquível, M.M., Bandarra, N.M., Fontan, I., Bernardo Gil, M.G., Batista, I., Nunes, M.L., Empis, J.A., "Supercritical Carbon Dioxide Extraction of Sardine Sardina Pilchardus Oil", Lebensmittel-Wissenschaft und Technologie (Food Science and Technology), 30, 715-720, 1997.

Rodrigues, M. F., Bernardo Gil, M. G., "Vapor-liquid Equilibrium of a-pinene + b-pinene + Limonene at 80.0 and 101.3 kPa", J. Chem. Eng. Data, 41, 581-585, 1996, DOI: 10.1021/je950324g .

Rodrigues, M. F., Bernardo Gil, M. G., "Vapor-liquid Equilibrium of binary mixtures of Limonene with a-pinene and b-pinene at reduced pressures", J. Chem. Eng. Data, 40, 1193-1195, 1995.

Bernardo Gil, M. G., Barreiros A., "Vapor-liquid Equilibrium of a-pinene + b-pinene at 53.3 and 80.0 kPa", Fluid Phase Equilibria, 100, 283-291, 1994.

Patents

Esteves, M.P.G.S., Bernardo-Gil, M.G.S., Amaro, F.O,C.E., Girio, F.M.F., Duarte, L.J.A.C.E., Roseiro. M.L.N.O.B.W., Moura, P.M.B.M.S., Roque, R., "Produtos naturais antioxidantes obtidos por extracção supercrítica aplicada à fracção insolúvel que fica após a extracção com água da polpa de alfarroba triturada e seu método de produção", PT 104631; A23L1/0526; A23L1/308, 2010.

Bernardo-Gil, M.G.S., Amaro, F.O,C.E., Girio, F.M.F., Duarte, L.J.A.C.E., Roseiro. M.L.N.O.B.W., Moura, P.M.B.M.S., Esteves, M.P.G.S., Pereira, P., "Bebida funcional não alcoóloca obtida da polpa de alfarroba triturada e processo para a sua preparação", PT 104632; A61k31/736; A61k35/74, 2010.

Bernardo-Gil, M.G.S., Amaro, F.O,C.E., Girio, F.M.F., Duarte, L.J.A.C.E., Roseiro. M.L.N.O.B.W., Moura, P.M.B.M.S., Esteves, M.P.G.S., Moniz, P.M.A., Pereira, J.P.C.S., "Processo para produção de manitol por fermentação de um extracto aquoso de polpa de alfarroba triturada", PT 104633; C12PT/18, 2010.

 

Books or book chapters

Bernardo-Gil, M.G., Esquível, M.M., Ribeiro, M. A., "Obtaining useful products from substrates of vegetable origin by using Supercritical Fluid Extraction", in "State of the art book on Supercritical Fluids", AINIA ed., ISBN: 84-87345-68-9, 307-325, 2004.

Ferreira, P., Gaspar, F., Sousa, C., Bernardo-Gil, G., Empis, J.A., Rouzet, M., Leeke, G., Santos, R., Lu, T., King, M., Bastos, J., "Origanun virens. An oregano from Portugal", G Bernardo-Gil and J. Empis, Ed., ISBN: 972-97813-0-3, 1-71, 1998.

Rodrigues, F., Bernardo-Gil, G., Empis, J.A., Rouzet, M., Santos, R., Lu, T., King, M., Bastos, J., "A contribution to the study of Rosmarinus officinalis L. from Portugal", G Bernardo-Gil and J. Empis, Ed., ISBN: 972-97813-3-8, 1-75, 1998.

Nolasco, M.A., Moldão-Martins, M., Bernardo-Gil, G., Empis, J.A., Beirão da Costa, M.L., Rouzet, M., Santos, R., Lu, T., King, M., Godinho, R., Bastos, J., "Thymus capitatus from southern Portugal", G Bernardo-Gil and J. Empis, Ed., ISBN: 972-97813-2-X, 1-58, 1998.

Moldão-Martins, M., Beirão da Costa, M.L., Bernardo-Gil, G., Empis, J.A., Rouzet, M., Santos, R., Lu, T., King, M., Godinho, R., Bastos, J., "Thymus zygis L. Un Thym du Nord Portugal", G Bernardo-Gil and J. Empis, Ed., ISBN: 972-97813-1-1, 1-71, 1998.


Text in Internet

Bernardo-Gil, M.G., "Flavours, their encapsulation and release", in FIDEL - Food Internet-based Distance European Learning - a course on “Topics in Food Chemistry”, http://web.ist.utl.pt/ist11061/fidel/fidel3topics.html, 1997.