University of Zaragoza (Spain)
Tecnología de los Alimentos
Facultad de Veterinaria de Zaragoza
C/ Miguel Servet, 177,
Tel. 34 976761581
Fax. 34 976761590
Mañas obtained a B.Sc. in Veterinary at the University of Zaragoza, in Spain, in
1994. Her master thesis was entitled “Influence of several environmental factors
on Yersinia enterocolitica heat resistance”. In 1999 she obtained a PhD
for the research work “Liquid whole egg higienization by heat and ultrasound”.
After this, she undertook three postdoctoral positions. Firstly, she worked at
the Sciences University of Montpellier, in France, with Professor Jean Claude
Cheftel, on several aspects of food preservation by pulsed electric field. She
moved to the Food Microbial Sciences Unit in the University of Reading, UK, with
Dr. Bernard Mackey, funded by the European Comission “Marie Curie” Program. She
worked for two years on mechanisms of bacterial inactivation by high pressure.
She is currently working as a senior researcher under the “Ramón y Cajal”
Spanish Science and Technology Ministry Program at the Faculty of Veterinary of
Novel food preservation technologies:
pulsed electric field, ultrasound and high pressure.
Mechanisms of bacterial inactivation by
food preservation processes: role of the bacterial envelopes.
Mechanisms of bacterial stress adaptation.
Stationary phase response of gramnegative
and grampositive bacteria.
COLLABORATION IN RESEARCH PROJECTS
CICYT No. ALI 93-0360: “The hygienization of milk by Mano-Thermo-Sonication:
resistance to MTSonication of Listeria monocytogenes, Yersinia
enterocolitica and Aeromonas hydrophila". Duration: from May
1994 to April 1997. Head researcher: Francisco Javier Sala Trepat.
OTRI 93/0150: “Mano-Termo-Sonication”. Duration: from May 1994 to May 1997. Head
researcher: Francisco Javier Sala Trepat.
Project FAIR 97-3044 (European Commission): "High Electric Fields Pulses: Food
Safety, Food Quality and Critical Process Parameters". Duration: from January
1998 to October 2000. Head researcher: Francisco Javier Sala Trepat and J. C.
Project entitled “Role of the Universal Stress Protein on the inactivation of
Escherichia coli by heat and high hydrostatic pressure” (European
Commission). Duration: from September 2000 to September 2002. Head researcher:
Dr. Bernard Mackey.
University of Zaragoza: “Resistance mechanisms of Salmonella to several
food preservation processes”. Duration: from January 2003 to January 2005. Head
researcher: Dr. M. P. Mañas.
- Pagán R.,
P. Mañas, J. Raso and S. Condón.
1999. Bacterial resistance to ultrasonic waves under pressure at no lethal
(Manosonication) and lethal (Manotermosonication) temperatures. Appl. Environ.
Microbiol., 65 (1): 297-300.
- Palop, A., P. Mañas,. and S. Condón. 1999. Sporulation temperature and
heat resistance of Bacillus spores: a review. J. Food Safety 19 (1):
- Mañas, P.,
R. Pagán, Raso, J., Sala, F. J. and Condón, S. 2000.
Inactivation of S. typhimurium, S. enteritidis and S. senftenberg
by ultrasonic waves under pressure. J. Food Prot., 63: 451- 456.
- Mañas, P.,
R. Pagán, F. J. Sala and S. Condón.
2001. Low molecular weight milk whey components protect Salmonella
senftenberg 775W against heat by a mechanism involving divalent cations. J.
Appl. Microbiol., 91: 871-877.
- Mañas, P., Barsotti, L. and Cheftel, J. C. 2001.Microbial inactivation
by pulsed electric fields in a batch treatment chamber: effects of some
electrical parameters and food constituents. Innovative Food Sci. Emerging
Technologies, 2: 239-249.
- Chilton, P., Isaacs, N. S., Mañas, P. and Mackey, B. M.
2001.”Biosynthetic requirements for the repair of membrane damage in
pressure-treated Escherichia coli”. Int. J. Food Microbiol., 71: 101-104.
- Casadei, M.A., Mañas, P., Niven, G., Needs, E. and Mackey, B.M. 2002.
The effect of membrane fluidity on the pressure resistance of Escherichia
Microbiol, 68: 5965-5972.
- Álvarez I.,
Mañas, P., Condón, S. and J. Raso. 2003.
Resistance variation of Salmonella enterica serovars to pulsed electric
J. Food Sci., 68: 2316-2320.
- Mañas, P.,
R. Pagán, I. Alvarez and S. Condón 2003.
Survival of Salmonella Senftenberg 775W to current liquid whole egg
pasteurization treatments. Food Microbiol. 20: 593-600.
- Álvarez, I., Mañas, P., Sala F.J. and Condón, S. 2003.Inactivation of
Salmonella enteritidis by ultrasonic waves under pressure at different
water activities. Appl. Environ. Microbiol., 69 (1): 668-672.
- Mañas, P. and Mackey, B. “Morphological and physiological changes
induced by high hydrostatic pressure in exponential and stationary phase cells
of Escherichia coli: relationship with cell death”. Appl. Environ
Microbiol, 70, in press.
are no vacancies at the moment, but do not hesitate in contacting me if you are
Travelling, music, sports (especially martial arts and climbing), amongst