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Dr. Michael Ryan


Michael Ryan is a lecturer below the bar in Industrial Biochemistry within the Department of Chemical Sciences. He completed his undergraduate degree in Industrial Biochemistry (UL) in 2004 and his Doctor Studies in 2009 under the supervision of Professor Catherine Adley and Professor Tony Pembroke. Following his PhD, Michael gained valuable experience as a post-doctoral researcher working on projects funded through the EPA and the EU-FP7.
Dr. Ryan is an international expert on Ralstonia pickettii species, particularly in purified water systems. Other interests include environmental microbiology and public health, antibiotic resistance and bio pharmaceuticals. He has authored over a dozen scientific papers over his career to date, has established valuable collaborations in both industry and academia and is a reviewer for a number of international peer reviewed journals.

Research Interests

My research interests are primarily focused in the area of microbiology, including environmental health, industrial microbial contamination and antimicrobial resistance.

Specific research strands includes but are not limited to:

- Microbial growth in purified water systems including biofilm formation and filter penetration.
- Environmental microbiology and public health; epidemiology of infectious diseases.
- Antimicrobial resistance in the environment; elucidation of causative factors.
- Mobile genetic elements; international expertise on Tn4731.

Teaching Interests

General Microbiology
Microbial Metabolism
Microbial Pathogenicity
Industrial Microbiology

Professional Activities


  • 2012 University of Limerick - Post-Doctoral Researcher
  • 2008 University of Limerick - Teaching Assistant


  • 2009 University of Limerick - PhD
  • 2004 University of Limerick - BSc (Honours)


  • Full Member, Microbiology Society
  • Full Member, American Society of Microbiology


  • Participation in Open days


  • Library Purchasing Committee,


Book Chapter


Ralstonia spp.
MP Ryan, CC Adley
Antimicrobial Therapy and Vaccines


Sphingomonas paucimobilis
MP Ryan, AA Butt, CC Adley
Antimicrobial Therapy and Vaccines


The Nature and Extent of Foodborne Disease
CC Adley, MP Ryan
Antimicrobial Food Packaging


Emerging policies on antimicrobial resistance, the consumption of antimicrobial agents and occurrence of antimicrobial resistance in bacteria from humans and food producing animals
CC Adley, A Dowling, H Handschuh, MP Ryan
The Battle Against Microbial Pathogens: Basic Science, Technological Advances and Educational Programs


The use of ACT as an educational tool for examining the spread of Antibiotic Resistance
MP Ryan, CC Adley, P Armshaw, JT Pembroke
The Battle Against Microbial Pathogens: Basic Science, Technological Advances and Educational Programs


Conductometric biosensors for high throughput screening of pathogens
CC Adley, MP Ryan
High Throughput Screening for Food Safety Assessment: Biosensor Technologies, Hyperspectral Imaging and Practical Applications


Ryan, MP., Pembroke TP and Adley CC
Molecular Detection of Human Bacterial Pathogens

Conference Publication

Other Journal

Peer Reviewed Journal


Assessment of the Bacterial Diversity of Aircraft Water: Identification of the Frequent Fliers
Harald Handschuh, Michael P. Ryan, Jean O'Dwyer, Catherine C. Adley
Plos One DOI: 10.1371/journal.pone.0170567


The biotechnological potential of whey
MP Ryan, G Walsh
Reviews In Environmental Science And Bio-Technology DOI: 10.1007/s11157-016-9402-1


Ralstonia spp.: emerging global opportunistic pathogens
Ryan, MP,Adley, CC
European Journal Of Clinical Microbiology & Infectious Diseases DOI: 10.1007/s10096-013-1975-9


Formulation of epoxy-polyester powder coatings containing silver-modified nanoclays and evaluation of their antimicrobial properties
Armstrong, G,Thornton, R,Ryan, MP,Laffir, F,Russell, RJ,Bala, T,Keely, C,Babu, R
Polymer Bulletin DOI: 10.1007/s00289-011-0695-5


Veterinary-based biopharmaceuticals
Ryan MP, Walsh G
Trends In Biotechnology DOI: 10.1016/j.tibtech.2012.08.005


Differentiating the growing nosocomial infectious threats Ralstonia pickettii and Ralstonia insidiosa
Ryan, MP; Pembroke, JT; Adley, CC
European Journal Of Clinical Microbiology & Infectious Diseases DOI: 10.1007/s10096-011-1219-9


Specific PCR to identify the heavy-metal-resistant bacterium Cupriavidus metallidurans
Ryan, MP; Adley, CC
Journal Of Industrial Microbiology & Biotechnology DOI: 10.1007/s10295-011-1011-y


Ralstonia pickettii in environmental biotechnology: potential and applications.
Ryan, MP; Pembroke, TP; Adley, CC
Journal Of Applied Microbiology

Published Report