Mara Guadalupe Freire Martins
  Investigador Coordenador  
  telefone: 234401422  
  extensão: 24922  
  departamento: Química  
  gabinete: 29.3.33  
  grupo: 5 - materiais biomédicos e biomiméticos
  linha: 3 - sustentabilidade
  url directo:  
Perfil biográfico

Mara G. Freire graduated in Chemistry in 2003 by University of Aveiro, Portugal, receiving the “Best Chemistry Student Award” from Dow Portugal. By the end of 2007 she completed her PhD in Chemical Engineering by University of Aveiro, having during her PhD studies trainees at Federal University of Rio de Janeiro, Brazil, and Claude Bernard University, Lyon, France, followed by post-doctoral activities at ITQB2, New University of Lisbon, Portugal. In 2012, Freire was an invited professor at Tiradentes University, Sergipe, Brazil. From June 2013 to January 2014, Freire was an Assistant Researcher at CICECO - Aveiro Institute of Materials, Chemistry Department, University of Aveiro, Portugal, and since February 2014 she is a Coordinator Researcher at the same institution. Currently, Mara Freire is the Coordinator of Group 5 of CICECO, Biomedical and Biomimetic Materials, member of the Cooperation and Scientific Dissemination Committee of the Chemistry Department, and Deputy Chair of the Scientific Council of University of Aveiro. Since January 2017 she is a member of the Young Scientists Seminar of the Lisbon Academy of Sciences.

Freire published +230 papers in international peer reviewed journals, 12 book chapters and edited one book, and has +12,000 citations and h-index of 63. She has published in scientific journals such as Chem. Rev., Chem. Soc. Rev., Angew. Chem., Phys. Chem. Lett., Adv. Sci., Sci. Rep., Green Chem., Chem. Eur. J., ACS Sustain. Chem. Eng., Phys. Chem. Chem. Phys., Biotechnol. Bioeng., Biotechnol. J., among others. The scientific network and internationalization of Freire is supported by publications with more than 200 distinct authors with diverse international affiliations. Freire recurrently acts as a referee of several journals, as well as in European and international programmes for independent research careers and research projects. Freire coordinated/participated in 22 R&D projects, among which a Starting and a Proof of Concept Grants from the European Research Council (ERC). She has filled 7 national patents, and 3 international patents, and received the Born from Knowledge award by Agência Nacional de Inovação in the Health field in 2018 and was a finalist in the Everis Awards 2019, awards related with technology transfer and business ideas.

In addition to other awards and recognitions, Freire received the ECTP-NETZSCH Young Scientist Award in 2014, was recognized amongst the top 20 “Women in Science” in Portugal in 2016, was recognized as one of the 14 rising stars in the Green Chemistry field by the Green Chemistry journal in 2017, was recognized as one of the 100 women in Chemistry by the Royal Society of Chemistry in 2018, was awarded with the “Vicente de Seabra Medal” in 2018, and was recognized as an influential researcher by the journal Industrial Research and Chemical Engineering and as a highly cited researcher by the Journal of Chemical and Engineering Data of the American Chemical Society in 2019.

The pedagogical capacity of Freire is supported by recurrent teaching activities of Physical Chemistry, Thermodynamics, and Alternative Solvents Technologies at the University of Aveiro. Up to date, she has completed the supervision of 18 post-doctoral researchers, and 12 PhD, 45 MSc and 35 BSc students.

Interesses científicos

Freire performs research in the following scientific domains: Biotechnology, Chemical Engineering/Bioengenering, Chemistry/Physical Chemistry and Health Sciences. Her research interests cover the following topics:

Development of cost-effective purification processes for value-added biopharmaceuticals

The production cost of high-quality biopharmaceuticals for large-scale applications still remains higher than other drug therapies due to the current lack of efficient purification strategies. To overcome this drawback, we are focused on the development of cost-effective purification processes for several value-added biopharmaceuticals, namely antibodies, recombinant proteins, and nucleic-acids-based products. Simultaneously to the development of separation processes, we are also working on the optimization of immunization protocols and on the biopharmaceuticals production.

Development of efficient pre-treatment techniques for biological samples envisaging early-stage diagnoses

The early detection of some diseases, including cancer, is pivotal and can increase their therapeutic success rate. Nowadays, there are some well-known biomarkers which are indicative of the presence of cancer or other diseases; yet, in most situations, their concentrations in human fluids, such as in urine and serum, are well below the detection limit of the currently used analytical equipment. To overcome these limitations, our research team is focused on the development of pre-treatment strategies for biological fluids (simultaneous purification and concentration approaches) to improve the detection and quantification of several diseases biomarkers.  

Development of sustainable recovery processes for value-added compounds with therapeutic properties from biomass

The consumption of natural compounds with therapeutic features is highly advantageous compared to their synthetic counterparts (which usually lead to adverse effects). However, these products are typically extracted by volatile and often toxic solvents, and obtained with low yields and low purity levels. Trying to overcome these drawbacks, we have been investigating the use of aqueous solutions of ionic liquids and deep eutectic solvents as alternative solvents for the selective extraction of target compounds, mainly with therapeutic features from biomass, as well as from biomass by-products and wastes. Attempts on integrated/biorefinery approaches, always bearing in mind the new challenges of the circular economy and the need to reduce and reuse waste and raw materials, are priority issues in this line of research. The cytotoxicity and biological activities of the extracted compounds also are usually appraised. 

Synthesis and applications of ionic liquids as therapeutic drugs

Several therapeutic drugs exhibit low solubility in biological fluids, displaying thus low bioavailability, and sometimes requiring the use of vehicles for drug delivery which, in turn, may be toxic. To overcome these drawbacks, we are focused on the synthesis of novel ionic-liquid-based drugs with analgesic, anti-inflammatory and/or antioxidant activities for pharmaceutical and medical applications, and on the evaluation of their in vitro and in vivo toxicity and their neuroprotection capacity. These novel drugs display a high potential to prevent neurodegeneration-based conditions, such as Parkinson’s and Alzheimer’s diseases. 

Publicações seleccionadas
  1. Passos, H.; Costa, S. H.; Fernandes, A. M.; Freire, M. G.; Rogers, R. D.; Coutinho, J. A. P., “A Triple Salting-Out Effect is Required for the Formation of Ionic-Liquid-Based Aqueous Multiphase Systems”, Angew. Chem. Int. Edit. 56 (2017) 15058-15062. 
  2. e Silva, F. A.; Pereira, J. F. B.; Kurnia, K. A.; Ventura, S. P. M.; Silva, A. M. S.; Rogers, R. D.; Coutinho, J. A. P.; Freire, M. G., “Temperature Dependency of Aqueous Biphasic Systems: an Alternative Approach for Exploring the Differences between Coulombic-dominated Salts and Ionic Liquids”, Chem. Commun. 53 (2017) 7298-7301.
  3. Ferreira, A. M.; Cláudio, A. F. M.; Valega, M.; Domingues, F. M. J.; Silvestre, A. J. D.; Rogers, R. D.; Coutinho, J.A.P.; Freire, M. G., “Switchable (pH-driven) aqueous biphasic systems formed by ionic liquids as integrated production-separation platforms”. Green Chem. 19 (2017) 2768-27773.
  4. Neves, C. M. S. S.; Silva, A. M. S.; Fernandes, A. M.; Coutinho, J. A. P.; Freire, M.G., “Towards an Understanding of the Mechanisms behind the Formation of Liquid-Liquid Systems formed by Two Ionic Liquids”, J. Phys. Chem. Lett. 8 (2017) 3015-3019.
  5. Ventura, S. P. M.; Silva, F. A.; Quental, M. V.; Mondal, D.; Freire, M. G.; Coutinho, J. A. P., “Ionic-Liquid-Mediated Extraction and Separation Processes for Bioactive Compounds: Past, Present, and Future Trends”, Chem. Rev. (2017) 6984-7052. 
  6. Capela, E. V.; Quental, M. V.; Domingues, P.; Coutinho, J. A. P.; Freire, M. G., “Effective Separation of Aromatic and Aliphatic Amino Acids Mixtures using Ionic-Liquid-based Aqueous Biphasic Systems”, Green Chem. 19 (2017) 1850-1854.
  7.  Mondal, D.; Sharma, M.; Quental, M. V.; Tavares, A. P. M.; Prasad, K.; Freire, M. G., “Suitability of Bio-Based Ionic Liquids for the Extraction and Purification of IgG Antibodies”, Green Chem. 18 (2016) 6071-6081.
  8. Passos, H.; Luís, A.; Coutinho, J. A. P.; Freire, M. G., “Thermoreversible (Ionic-Liquid-Based) Aqueous Biphasic Systems”, Sci. Rep. 6 (2016) Article number: 20276.
  9. Dinis, T. B. V.; Passos, H.; Lima, D. L. D.; Esteves, V. I.; Coutinho, J. A. P.; Freire, M. G., “One-step Extraction and Concentration of Estrogens for an Adequate Monitoring of Wastewaters Using Ionic-Liquid-Based Aqueous Biphasic Systems”, Green Chem. 17 (2015) 2570–2579
  10. Taha, M.; Almeida, M. R.; Silva, F. A.; Domingues, P.; Ventura, S. P. M.; Coutinho, J. A. P.; Freire, M. G., “Novel Biocompatible and Self-buffering Ionic Liquids for Biopharmaceutical Applications”, Chem. Eur. J. 21 (2015) 4781–4788.
  11. Passos, H.; Freire, M. G.; Coutinho, J. A. P., “Ionic liquid Solutions as Extractive Solvents for Value-Added Compounds from Biomass”, Green Chem. 16 (2014) 4786-4815.
  12. Cláudio, A. F. M.; Swift, L.; Hallett, J.; Welton, T.; Coutinho, J. A. P.; Freire, M. G., “Extended Scale for the Hydrogen-Bond Basicity of Ionic Liquids”,  Phys. Chem. Chem. Phys. 16 (2014) 6593-6601.
  13. Pereira, J. F. B.; Rebelo, L. P. N.; Rogers, R. D.; Coutinho, J. A. P.; Freire, M. G., “Combining Ionic Liquids and Polyethylene Glycols to Boost the Hydrophobic-hydrophilic Range of Aqueous Biphasic Systems”, Phys. Chem. Chem. Phys. 15 (2013) 19580-19583.
  14. Freire, M. G.; Cláudio, A. F. M.; Araújo, J. M. M.; Coutinho, J. A. P.; Marrucho, I. M.; Canongia Lopes, J. N.; Rebelo, L. P. N., “Aqueous Biphasic Systems: A Boost Brought About by using Ionic Liquids”, Chem. Soc. Rev. 41 (2012) 4966-4995.
  15. Tariq, M.; Freire, M.G.; Saramago, B.; Coutinho, J. A. P.; Canongia Lopes, J. N.; Rebelo, L. P. N., “Surface Tension of Ionic Liquids and Ionic Liquid Solutions”, Chem. Soc. Rev. 41 (2012) 829-868.
  16. Freire, M. G.; Pereira, J. F. B.; Francisco, M.; Rodríguez, H.; Rebelo, L. P. N.; Rogers, R. D.; Coutinho, J. A. P., “Insights into the Interactions that Control the Phase Behaviour of Novel Aqueous Biphasic Systems Composed of Polyethylene Glycols and Ionic Liquids”, Chem. Eur. J. 18 (2012) 1831-1839.
  17. Freire, M. G.; Neves, C. M. S. S.; Marrucho, I. M.; Canongia Lopes, J. N.; Rebelo, L. P. N.; Coutinho, J. A. P., “High-Performance Extraction of Alkaloids using Aqueous Two-Phase Systems with Ionic Liquids”, Green Chem. 12 (2010) 1715-1718.
  18. Freire, M. G.; Neves, C. M. S. S.; Carvalho, P. J.; Gardas, R. M.; Fernandes, A. M.; Marrucho, I. M.; Santos, L. M. N. B. F.; Coutinho, J. A. P., “Mutual Solubilities of Water and Hydrophobic Ionic Liquids”, J. Phys. Chem. B 111 (2007) 13082-13089.
  19. Freire, M. G.; Gomes, L.; Santos, L. M. N. B. F.; Marrucho, I. M., Coutinho, J. A. P., “Water Solubility in Linear Fluoroalkanes Used in Blood Substitute Emulsions”, J. Phys. Chem. B 110 (2006) 22923-22929.
  20. Freire, M. G.; Dias, A. M. A.; Coelho, M. A. Z.; Coutinho, J. A. P.;Marrucho, I. M., “Aging Mechanisms of Perfluorocarbon Emulsions using Image Analysis”, J. Colloid Interface Sci. 286 (2005) 224-232.
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