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4. Tom O'Callaghan

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Biography

Dr. Tom O’Callaghan is a lecturer in Food Science and Technology in the School of Food and Nutritional Sciences at UCC. Tom graduated from UCC with a BSc in Food Science in 2014 and PhD in Science in 2018. Tom carried out his PhD in Teagasc Moorepark Food Research Centre, examining the effects of cow feeding system on the quality and constituents of raw milk, dairy products and the rumen. During his PhD Tom was the recipient of a Teagasc Overseas Training Award which facilitated him to conduct a portion of his studies at The Metabolomics Innovation Centre in the University of Alberta. In 2017, Tom took up the role of permanent Research Officer responsible for dairy chemistry research with Teagasc, in the Dept of Food Chemistry and Technology before joining UCC in 2020. Tom’s research has focused on chemistry, nutrition and processing technologies across the supply chain, with particular emphasis on the effects of production practices, cow feeding systems and dairy processing technologies on the quality, nutritional and functional characteristics of milk and dairy products. Tom is a Principal Investigator with Food For Health Ireland and the Dairy Processing Technology Centre and an Academic Collaborator with VistaMilk, an SFI research centre.‍

Research Interests

Tom’s research has focused on chemistry, nutrition and processing technologies across the supply chain, with particular emphasis on the effects of production practices, cow feeding systems and dairy processing technologies on the quality, nutritional and functional characteristics of milk and dairy products.

Research Grants

	Project	Funding Body	Start Date	End Date	Award
	Examination of the Irish milk metabolome for improved prediction of milk processability	Department of Agriculture Fisheries & Forestry (DAFF)	01-APR-22	31-MAR-26	€475,381.00
	The fate of chlorate in dairy processes	Teagasc	01-OCT-17	30-SEP-21	€112,000.00
	Impact of red-clover inclusion into perennial ryegrass silage swards on animal performance, product quality and environmental efficiency	Teagasc	01-SEP-22	31-AUG-26	€96,000.00
	PASTURE-NUE: A multidisciplinary approach to increasing the nitrogen use efficiency of pasture-based systems	Department of Agriculture Fisheries & Forestry (DAFF)	01-DEC-21	30-NOV-25	€202,400.00
	Investigating the effect of including white clover into perennial ryegrass swards	Teagasc	01-JAN-22	31-DEC-23	€48,000.00
	Development of strategies to reduce methane in dairy cows	Teagasc	01-OCT-21	30-SEP-25	€96,000.00
	Dairy Processing Technology Centre Phase 2	Enterprise Irl	01-AUG-20	31-JUL-25	€238,875.00
	Research Start Up Fund.	Miscellaneous	01-SEP-21	31-AUG-26	€7,500.00
	Examination of the impacts of the typical Irish pasture dairy system on the composition and quality of milk and dairy products	Teagasc	01-OCT-19	30-SEP-23	€127,500.00
	Consequences of the grazed pasture diversity on annual variability of nutritional value and technological properties of milk, and nutritional status of Holstein-Friesian and Jersey Holstein-Friesian crossbred dairy cows.	Teagasc	01-OCT-21	30-SEP-25	€96,000.00
	Comprehensive review of the advantages and disadvantages of pasture feeding	Department of Agriculture, Fisheries & Food (DAFF)	01-NOV-18	31-OCT-19	€67,000.00
	Understanding the fate of N-(n-butyl) thiophosphoric triamide (NBPT) and other inhibitors during milk processing	Department of Agriculture, Fisheries & Food (DAFF)	01-OCT-18	30-SEP-22	€112,500.00
	Food For Health Ireland 3: Grass Fed Pilar	Enterprise Ireland	01-OCT-19	30-NOV-24	€1,330,000.00
	Examination of the factors affecting the composition, quality and vitality of bovine colostrum	Teagasc	01-OCT-20	29-SEP-24	€96,000.00
	The Investigation of Milk Fat Depression in Dairy Cattle.	Teagasc	01-OCT-20	30-SEP-24	€88,000.00

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Publications

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Peer Reviewed Journals

	Year	Publication
	(2022)	'Parsimonious Bayesian factor analysis for modelling latent structures in spectroscopy data' Casa, Alessandro,O’Callaghan, Tom F.,Murphy, Thomas Brendan (2022) 'Parsimonious Bayesian factor analysis for modelling latent structures in spectroscopy data'. The Annals of Applied Statistics, 16 (4)   [Details]
	(2022)	'Irish research response to dairy quality in an era of change' B. O’Brien,T. Beresford,P.D. Cotter,D. Gleeson,A. Kelly,K. Kilcawley,J. Magan,S. McParland,E. Murphy,T. O’Callaghan,J. Tobin,M. Fenelon (2022) 'Irish research response to dairy quality in an era of change'. Irish Journal of Agricultural and Food Research,   [DOI] [Details]
	(2022)	'Impact of a total mixed ration or pasture/pasture silage-based feeding strategy in the initial stages of lactation of spring-calving dairy cows on milk production, composition and selected milk processability parameters' Z.C. McKay,F.J. Mulligan,E.L. Brady,M. O’Sullivan,G. Rajauria,M.B. Lynch,T.F. O’Callaghan,K.M. Pierce (2022) 'Impact of a total mixed ration or pasture/pasture silage-based feeding strategy in the initial stages of lactation of spring-calving dairy cows on milk production, composition and selected milk processability parameters'. Irish Journal of Agricultural and Food Research,   [DOI] [Details]
	(2022)	'Authentication of ß-casein milk phenotypes using FTIR spectroscopy' Daniloskia, Davor,McCarthy, Noel A.,O’Callaghan, Tom F.,Vasiljevic, Todor (2022) 'Authentication of ß-casein milk phenotypes using FTIR spectroscopy'. International Dairy Journal,   [DOI] [Details]
	(2022)	'Application of nanofiltration for the removal of chlorate from skim milk' McCarthy, William P.,Blais, Herehau N.,O'Callaghan, Tom F.,Hossain, Mohammad,Moloney, Mary,Danaher, Martin,O'Connor, Christine,Tobin, John T. (2022) 'Application of nanofiltration for the removal of chlorate from skim milk'. International Dairy Journal,   [DOI] [Details]
	(2021)	'Compositional and Functional Considerations for Bovine-, Caprine- and Plant-Based Infant Formulas' Byrne, Margaret E.,O’Mahony, James A.,O’Callaghan, Tom F. (2021) 'Compositional and Functional Considerations for Bovine-, Caprine- and Plant-Based Infant Formulas'. Dairy, 2 (4):695-715   [Details]
	(2021)	'Enhancing muscle fatty acid profile by pasture finishing within a dairy-origin calf-to-steer beef production system and its potential to authenticate the dietary history of the cattle' A.P. Moloney,M.G. Keane,F.J. Monahan,T.F. O’Callaghan (2021) 'Enhancing muscle fatty acid profile by pasture finishing within a dairy-origin calf-to-steer beef production system and its potential to authenticate the dietary history of the cattle'. Irish Journal of Agricultural and Food Research,   [DOI] [Details]
	(2021)	'Application of machine-learning methods to milk mid-infrared spectra for discrimination of cow milk from pasture or total mixed ration diets' Frizzarin, M.,O'Callaghan, T. F.,Murphy, T. B.,Hennessy, D.,Casa, A. (2021) 'Application of machine-learning methods to milk mid-infrared spectra for discrimination of cow milk from pasture or total mixed ration diets'. Journal of Dairy Science,   [DOI] [Details]
	(2021)	'Use of confocal Raman imaging to understand the microstructure of anhydrous milk fat-based oleogels' Gómez-Mascaraque, Laura G.,Tran, Caine,O’Callaghan, Tom,Hogan, Sean A. (2021) 'Use of confocal Raman imaging to understand the microstructure of anhydrous milk fat-based oleogels'. Food structure,   [DOI] [Details]
	(2021)	'Parsimonious Bayesian Factor Analysis for modelling latent structures in spectroscopy data' Casa, Alessandro,O'Callaghan, Tom F,Murphy, Thomas Brendan (2021) 'Parsimonious Bayesian Factor Analysis for modelling latent structures in spectroscopy data'. arXiv preprint arXiv:2101.12499, [Details]
	(2021)	'Effect of bovine feeding system (pasture or concentrate) on the oxidative and sensory shelf life of whole milk powder' Clarke, H. J.,Griffin, C.,Hennessy, D.,O'Callaghan, T. F.,O'Sullivan, M. G.,Kerry, J. P.,Kilcawley, K. N. (2021) 'Effect of bovine feeding system (pasture or concentrate) on the oxidative and sensory shelf life of whole milk powder'. Journal of Dairy Science,   [DOI] [Details]
	(2021)	'Application of metabolomics to assess milk quality and traceability' Rocchetti, Gabriele,O’Callaghan, Tom F. (2021) 'Application of metabolomics to assess milk quality and traceability'. Current Opinion in Food Science,   [DOI] [Details]
	(2021)	'Health-related outcomes of genetic polymorphism of bovine ß-casein variants: A systematic review of randomised controlled trials' Daniloski, Davor,Cunha, Nathan M. D.,McCarthy, Noel A.,O'Callaghan, Tom F.,McParland, Sinéad,Vasiljevic, Todor (2021) 'Health-related outcomes of genetic polymorphism of bovine ß-casein variants: A systematic review of randomised controlled trials'. Trends in Food Science & Technology,   [DOI] [Details]
	(2021)	'Compositional and functional properties of milk and dairy products derived from cows fed pasture or concentrate-based diets' Magan, Jonathan B.,O'Callaghan, Tom F.,Kelly, Alan L.,McCarthy, Noel A. (2021) 'Compositional and functional properties of milk and dairy products derived from cows fed pasture or concentrate-based diets'. Comprehensive Reviews in Food Science and Food Safety, n/a (n/a)   [DOI] [Details]
	(2021)	'Invited review: A 2020 perspective on pasture-based dairy systems and products' Moscovici Joubran, Alice,Pierce, Karina M.,Garvey, Niamh,Shalloo, Laurence,O'Callaghan, Tom F. (2021) 'Invited review: A 2020 perspective on pasture-based dairy systems and products'. Journal of Dairy Science,   [DOI] [Details]
	(2021)	'The Impact of Seasonality in Pasture-Based Production Systems on Milk Composition and Functionality' Timlin, Mark,Tobin, John T.,Brodkorb, André,Murphy, Eoin G.,Dillon, Pat,Hennessy, Deirdre,O’Donovan, Michael,Pierce, Karina M.,O’Callaghan, Tom F. (2021) 'The Impact of Seasonality in Pasture-Based Production Systems on Milk Composition and Functionality'. Foods, 10 (3)   [Details]
	(2020)	'Current knowledge on urease and nitrification inhibitors technology and their safety' Ray, Aishwarya,Nkwonta, Chikere,Forrestal, Patrick,Danaher, Martin,Richards, Karl,O’Callaghan, Tom,Hogan, Sean,Cummins, Enda (2020) 'Current knowledge on urease and nitrification inhibitors technology and their safety'. Reviews on Environmental Health,   [DOI] [Details]
	(2020)	'Changes to the Oligosaccharide Profile of Bovine Milk at the Onset of Lactation' Quinn, Erinn M.,O’Callaghan, Tom F.,Tobin, John T.,Murphy, John Paul,Sugrue, Katie,Slattery, Helen,O’Donovan, Michael,Hickey, Rita M. (2020) 'Changes to the Oligosaccharide Profile of Bovine Milk at the Onset of Lactation'. Dairy, 1 (3):284-296   [Details]
	(2020)	'A Cross-Cultural Evaluation of Liking and Perception of Salted Butter Produced from Different Feed Systems' C. Garvey, Emer,Sander, Thorsten,O’Callaghan, Tom F.,Drake, MaryAnne,Fox, Shelley,O’Sullivan, Maurice G.,Kerry, Joseph P.,Kilcawley, Kieran N. (2020) 'A Cross-Cultural Evaluation of Liking and Perception of Salted Butter Produced from Different Feed Systems'. Foods, 9 (12)   [Details]
	(2020)	'Raman spectroscopy: A rapid method to assess the effects of pasture feeding on the nutritional quality of butter' Gómez-Mascaraque, L. G.,Kilcawley, K.,Hennessy, D.,Tobin, J. T.,O'Callaghan, T. F. (2020) 'Raman spectroscopy: A rapid method to assess the effects of pasture feeding on the nutritional quality of butter'. Journal of Dairy Science,   [DOI] [Details]
	(2020)	'The bovine colostrum and milk metabolome at the onset of lactation as determined by 1H-NMR' O’Callaghan, Tom F.,O’Donovan, Michael,Murphy, John Paul,Sugrue, Katie,Tobin, John T.,McNamara, Aoife E.,Yin, Xiaofei,Sundaramoorthy, Geetha,Brennan, Lorraine (2020) 'The bovine colostrum and milk metabolome at the onset of lactation as determined by 1H-NMR'. International Dairy Journal,   [DOI] [Details]
	(2016)	'The gut microbiome as a virtual endocrine organ with implications for farm and domestic animal endocrinology' O'Callaghan, T. F.,Ross, R. P.,Stanton, C.,Clarke, G. (2016) 'The gut microbiome as a virtual endocrine organ with implications for farm and domestic animal endocrinology'. Domestic animal endocrinology, 56   [DOI] [Details]
	(2020)	'Evolution of the bovine milk fatty acid profile – From colostrum to milk five days post parturition' O'Callaghan, Tom F.,O'Donovan, Michael,Murphy, John P.,Sugrue, Katie,Mannion, David,McCarthy, William P.,Timlin, Mark,Kilcawley, Kieran N.,Hickey, Rita M.,Tobin, John T. (2020) 'Evolution of the bovine milk fatty acid profile – From colostrum to milk five days post parturition'. International Dairy Journal, 104   [DOI] [Details]
	(2020)	'The effects of sequential heat treatment on microbial reduction and spore inactivation during milk processing' Li, Fang,Hunt, Karen,Buggy, Aoife K.,Murphy, Kevin M.,Ho, Quang Tri,O'Callaghan, Tom F.,Butler, Francis,Jordan, Kieran,Tobin, John T. (2020) 'The effects of sequential heat treatment on microbial reduction and spore inactivation during milk processing'. International Dairy Journal, 104   [DOI] [Details]
	(2020)	'Effect of Diet on the Vitamin B Profile of Bovine Milk-Based Protein Ingredients' Magan, Jonathan B.,O’Callaghan, Tom F.,Zheng, Jiamin,Zhang, Lun,Mandal, Rupasri,Hennessy, Deirdre,Fenelon, Mark A.,Wishart, David S.,Kelly, Alan L.,McCarthy, Noel A. (2020) 'Effect of Diet on the Vitamin B Profile of Bovine Milk-Based Protein Ingredients'. Foods, 9 (5)   [Details]
	(2020)	'Effect of Pseudomonas fluorescens proteases on the quality of Cheddar cheese' Paludetti, Lizandra F.,O'Callaghan, Tom F.,Sheehan, Jeremiah J.,Gleeson, David,Kelly, Alan L. (2020) 'Effect of Pseudomonas fluorescens proteases on the quality of Cheddar cheese'. Journal of Dairy Science,   [DOI] [Details]
	(2020)	'Milk fat: opportunities, challenges and innovation' Mohan, Maneesha S.,O’Callaghan, Tom F.,Kelly, Phil,Hogan, Sean A. (2020) 'Milk fat: opportunities, challenges and innovation'. Critical reviews in food science and nutrition, :1-33   [DOI] [Details]
	(2020)	'Urease and Nitrification Inhibitors—As Mitigation Tools for Greenhouse Gas Emissions in Sustainable Dairy Systems: A Review' Byrne, Maria P.,Tobin, John T.,Forrestal, Patrick J.,Danaher, Martin,Nkwonta, Chikere G.,Richards, Karl,Cummins, Enda,Hogan, Sean A.,O’Callaghan, Tom F. (2020) 'Urease and Nitrification Inhibitors—As Mitigation Tools for Greenhouse Gas Emissions in Sustainable Dairy Systems: A Review'. Sustainability, 12 (15)   [Details]
	(2019)	'Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk' O’Callaghan, Tom F.,Mannion, David,Apopei, Diana,McCarthy, Noel A.,Hogan, Sean A.,Kilcawley, Kieran N.,Egan, Michael (2019) 'Influence of Supplemental Feed Choice for Pasture-Based Cows on the Fatty Acid and Volatile Profile of Milk'. Foods, 8 (4)   [Details]
	(2019)	'Impact of Bovine Diet on Metabolomic Profile of Skim Milk and Whey Protein Ingredients' Magan, Jonathan B.,O’Callaghan, Tom F.,Zheng, Jiamin,Zhang, Lun,Mandal, Rupasri,Hennessy, Deirdre,Fenelon, Mark A.,Wishart, David S.,Kelly, Alan L.,McCarthy, Noel A. (2019) 'Impact of Bovine Diet on Metabolomic Profile of Skim Milk and Whey Protein Ingredients'. Metabolites, 9 (12)   [Details]
	(2019)	'Dietary Compounds Influencing the Sensorial, Volatile and Phytochemical Properties of Bovine Milk' Clarke, Holly J.,Griffin, Carol,Rai, Dilip K.,O’Callaghan, Tom F.,O’Sullivan, Maurice G.,Kerry, Joseph P.,Kilcawley, Kieran N. (2019) 'Dietary Compounds Influencing the Sensorial, Volatile and Phytochemical Properties of Bovine Milk'. Molecules, 25 (1)   [Details]
	(2019)	'Physicochemical properties of whole milk powder derived from cows fed pasture or total mixed ration diets' Magan, Jonathan B.,Tobin, John T.,O'Callaghan, Tom F.,Kelly, Alan L.,Fenelon, Mark A.,Hennessy, Deirdre,McCarthy, Noel A. (2019) 'Physicochemical properties of whole milk powder derived from cows fed pasture or total mixed ration diets'. Journal of Dairy Science,   [DOI] [Details]
	(2019)	'Energy-dispersive X-ray fluorescence spectrometry as a tool for the rapid determination of the five major minerals (Na, Mg, K, P and Ca) in skim milk powder' McCarthy, William P,Daly, Karen,Fenelon, Anna,O'Connor, Christine,McCarthy, Noel A,Hogan, Sean A,Tobin, John T,O'Callaghan, Tom F (2019) 'Energy-dispersive X-ray fluorescence spectrometry as a tool for the rapid determination of the five major minerals (Na, Mg, K, P and Ca) in skim milk powder'. International Journal of Dairy Technology, n/a (n/a)   [DOI] [Details]
	(2019)	'The “Grass-Fed” Milk Story: Understanding the Impact of Pasture Feeding on the Composition and Quality of Bovine Milk' Alothman, Mohammad,Hogan, Sean A.,Hennessy, Deirdre,Dillon, Pat,Kilcawley, Kieran N.,O’Donovan, Michael,Tobin, John,Fenelon, Mark A.,O’Callaghan, Tom F. (2019) 'The “Grass-Fed” Milk Story: Understanding the Impact of Pasture Feeding on the Composition and Quality of Bovine Milk'. Foods, 8 (8)   [Details]
	(2019)	'The application of process analytical technologies (PAT) to the dairy industry for real time product characterization - process viscometry' O'Shea, Norah,O'Callaghan, Tom F.,Tobin, John T. (2019) 'The application of process analytical technologies (PAT) to the dairy industry for real time product characterization - process viscometry'. Innovative Food Science & Emerging Technologies,   [DOI] [Details]
	(2018)	'Effect of pH and heat treatment on viscosity and heat coagulation properties of milk protein concentrate' Ho, Quang Tri,Murphy, Kevin M.,Drapala, Kamil P.,O'Callaghan, Tom F.,Fenelon, Mark A.,O'Mahony, James A.,McCarthy, Noel A. (2018) 'Effect of pH and heat treatment on viscosity and heat coagulation properties of milk protein concentrate'. International Dairy Journal, 85 :219-224   [DOI] [Details]
	(2018)	'Pasture Feeding Changes the Bovine Rumen and Milk Metabolome' O’Callaghan, Tom,Vázquez-Fresno, Rosa,Serra-Cayuela, Arnau,Dong, Edison,Mandal, Rupasri,Hennessy, Deirdre,McAuliffe, Stephen,Dillon, Pat,Wishart, David,Stanton, Catherine,Ross, R. (2018) 'Pasture Feeding Changes the Bovine Rumen and Milk Metabolome'. Metabolites, 8 (2)   [DOI] [Details]
	(2018)	'Effect of different forage types on the volatile and sensory properties of bovine milk' Faulkner, Hope,O'Callaghan, Tom F.,McAuliffe, Stephen,Hennessy, Deirdre,Stanton, Catherine,O'Sullivan, Maurice G.,Kerry, Joseph P.,Kilcawley, Kieran N. (2018) 'Effect of different forage types on the volatile and sensory properties of bovine milk'. Journal of Dairy Science, 101 (2):1034-1047   [DOI] [Details]
	(2018)	'Chlorate and Other Oxychlorine Contaminants Within the Dairy Supply Chain' McCarthy, William P.,O'Callaghan, Tom F.,Danahar, Martin,Gleeson, David,O'Connor, Christine,Fenelon, Mark A.,Tobin, John T. (2018) 'Chlorate and Other Oxychlorine Contaminants Within the Dairy Supply Chain'. Comprehensive Reviews in Food Science and Food Safety, 0 (0)   [DOI] [Details]
	(2017)	'Effect of pasture versus indoor feeding systems on quality characteristics, nutritional composition, and sensory and volatile properties of full-fat Cheddar cheese' O'Callaghan, Tom F.,Mannion, David T.,Hennessy, Deirdre,McAuliffe, Stephen,O'Sullivan, Maurice G.,Leeuwendaal, Natasha,Beresford, Tom P.,Dillon, Pat,Kilcawley, Kieran N.,Sheehan, Jeremiah J.,Ross, R. Paul,Stanton, Catherine (2017) 'Effect of pasture versus indoor feeding systems on quality characteristics, nutritional composition, and sensory and volatile properties of full-fat Cheddar cheese'. Journal of Dairy Science, 100 (8):6053-6073   [DOI] [Details]
	(2017)	'The Composition of Human Milk and Infant Faecal Microbiota Over the First Three Months of Life: A Pilot Study' Murphy, Kiera,Curley, David,O’Callaghan, Tom F.,O’Shea, Carol-Anne,Dempsey, Eugene M.,O’Toole, Paul W.,Ross, R. Paul,Ryan, C. Anthony,Stanton, Catherine (2017) 'The Composition of Human Milk and Infant Faecal Microbiota Over the First Three Months of Life: A Pilot Study'. Scientific Reports, 7   [DOI] [Details]
	(2017)	'Glycomacropeptide Sustains Microbiota Diversity and Promotes Specific Taxa in an Artificial Colon Model of Elderly Gut Microbiota' Ntemiri, Alexandra,Chonchúir, Fodhla Ní,O’Callaghan, Tom F.,Stanton, Catherine,Ross, R. Paul,O’Toole, Paul W. (2017) 'Glycomacropeptide Sustains Microbiota Diversity and Promotes Specific Taxa in an Artificial Colon Model of Elderly Gut Microbiota'. Journal of Agricultural and Food Chemistry, 65 (8):1836-1846   [DOI] [Details]
	(2016)	'Effect of pasture versus indoor feeding systems on raw milk composition and quality over an entire lactation' O’Callaghan, Tom F.,Hennessy, Deirdre,McAuliffe, Stephen,Kilcawley, Kieran N.,O’Donovan, Michael,Dillon, Pat,Ross, R. Paul,Stanton, Catherine (2016) 'Effect of pasture versus indoor feeding systems on raw milk composition and quality over an entire lactation'. Journal of Dairy Science, 99 (12):9424-9440   [DOI] [Details]
	(2016)	'Streptococcus thermophilus APC151 Strain Is Suitable for the Manufacture of Naturally GABA-Enriched Bioactive Yogurt' Linares,Daniel M.,O’Callaghan,Tom F.,O’Connor,Paula M.,Ross,R. P.,Stanton,Catherine (2016) 'Streptococcus thermophilus APC151 Strain Is Suitable for the Manufacture of Naturally GABA-Enriched Bioactive Yogurt'. Frontiers in Microbiology, 7 (1876)   [DOI] [Details]
	(2016)	'Quality characteristics, chemical composition, and sensory properties of butter from cows on pasture versus indoor feeding systems' O'Callaghan, Tom F.,Faulkner, Hope,McAuliffe, Stephen,O’Sullivan, Maurice G.,Hennessy, Deirdre,Dillon, Pat,Kilcawley, Kieran N.,Stanton, Catherine,Ross, R. Paul (2016) 'Quality characteristics, chemical composition, and sensory properties of butter from cows on pasture versus indoor feeding systems'. Journal of Dairy Science, 99 (12):9441-9460   [DOI] [Details]
	(2015)	'Use of ultrafiltration to prepare a novel permeate for application in the functionality testing of infant formula ingredients' Crowley, Shane V,O’Callaghan, Tom F,Kelly, Alan L,Fenelon, Mark A,O’Mahony, James A (2015) 'Use of ultrafiltration to prepare a novel permeate for application in the functionality testing of infant formula ingredients'. Separation and Purification Technology, 141 :294-300 [Details]

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Conference Publications

	Year	Publication
	(2019)	THE NITROGEN CYCLE A MINI REVIEW Byrne, Maria P,Tobin, John T,Forrestal, Patrick,Richards, Karl,Danaher, Martin,Cummins, Enda,O’Callaghan, Tom F (2019) THE NITROGEN CYCLE A MINI REVIEW THE NITROGEN CYCLE A MINI REVIEW [Details]

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Thesis/Dissertation

	Year	Publication
	(2018)	Effect of cow feeding system on the quality and constituents of raw milk, dairy products and the rumen. Tom F. O'Callaghan (2018) Effect of cow feeding system on the quality and constituents of raw milk, dairy products and the rumen. Ireland: Thesis/Dissertation   [Details]

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Book Chapters

	Year	Publication
	(2021)	'Manufacture of Milk and Whey Products: Butter and Buttermilk¿' O'Callaghan, Tom F. (2021) 'Manufacture of Milk and Whey Products: Butter and Buttermilk¿' In: Reference Module in Food Science. ElsevierElsevier.   [DOI] [Details]
	(2020)	'Rumen metabolomics a powerful tool for discovery and understanding of rumen functionality and health' Tom F. O'Callaghan, Eva Lewis (2020) 'Rumen metabolomics a powerful tool for discovery and understanding of rumen functionality and health' In: Dr Chris McSweeney and Prof. Roderick I. Mackie (eds). Improving rumen function. UK: Burleigh Dodds Science Publishing Limited.   [Details]
	(2020)	'Milk Fat: Chemical and Physical Modification' Hogan, S. A.,O’Callaghan, T. F.,McSweeney, Paul L. H.,Fox, Patrick F.,O'Mahony, James A. (2020) 'Milk Fat: Chemical and Physical Modification' In: Advanced Dairy Chemistry, Volume 2: Lipids. ChamCham: Springer International PublishingSpringer International Publishing.   [DOI] [Details]
	(2019)	'Chapter 7 - Nutritional Aspects of Raw Milk: A Beneficial or Hazardous Food Choice' O’Callaghan, Tom F.,Sugrue, Ivan,Hill, Colin,Ross, R. Paul,Stanton, Catherine,Nero, Luís Augusto,De Carvalho, Antonio Fernandes (2019) 'Chapter 7 - Nutritional Aspects of Raw Milk: A Beneficial or Hazardous Food Choice' In: Raw Milk. Academic PressAcademic Press.   [DOI] [Details]

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Technical Publication

	Year	Publication
	(2020)	An overview of the A1/A2 milk hypothesis. Tom F. O'Callaghan (2020) An overview of the A1/A2 milk hypothesis. Ireland: Technical Publication   [Details]
	(2019)	Nutritional attributes of grass-fed dairy. Tom F. O’Callaghan (2019) Nutritional attributes of grass-fed dairy. Technical Publication   [Details]

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Professional Activities

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Honours and Awards

	Year	Title	Awarding Body
	2022	American Dairy Science Association Foundation Scholar Award	ADSA
	2017	Teagasc Overseas Training Award	Teagasc
	2016	Teagasc PhD Walsh Fellowship	Teagasc

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Professional Associations

	Association	Function	From / To
	American Dairy Science Association	Member	/
	Society of Dairy Technology	Member	01-JUN-22 /

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Conference Contributions

	Year	Publication
	(2021)	Pasture Summit 2021, Tom F. O'Callaghan (2021) Milk is a highly nutritious food product and a natural source of a variety of beneficial and essential nutrients. Grass-Fed milk and dairy products are becoming more prominent on the market, often commanding a premium price, driven by consumer perceptions of a more natural, nutritious and sustainable product choice. This session will explore the impact of pasture based feeding systems on the composition and quality of milk and highlight the attributes that provide Grass-Fed dairy products with their unique characteristics. [Invited Lectures (Conference)], Pasture Summit 2021, Ireland and Nz - Streamed . [Details]
	(2019)	ADSA, Tom F. O'Callaghan (2019) Impact of cow feeding system on the composition and quality of milk and dairy products. [Invited Lectures (Conference)], ADSA, Cincinnati, USA . [Details]
	(2018)	Euro Fed Lipids Conference, Tom F. O'Callaghan (2018) Invited Speaker. [Invited Lectures (Conference)], Euro Fed Lipids Conference, Belfast, Ireland . [Details]
	(2018)	Grass-Fed Milk Conference, Tom F. O'Callaghan (2018) Invited speaker. [Invited Lectures (Conference)], Grass-Fed Milk Conference, Ireland . [Details]

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Committees

	Committee	Function	From / To
	School Research Committee	Member	2021 /
	Public Enagagement & Outreach Comittee	Member	2020 /

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Employment

	Employer	Position	From / To
	Teagasc	Research Officer (Permanent)	06-MAR-17 / 08-MAY-20

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Education

	Year	Institution	Qualification	Subject
	2014	University College Cork	B.Sc	Food Science
	2020	University College Cork	Post Graduate Certificate	Teaching and Learning in Higher Education
	2021	University College Cork	Post Graduate Diploma	Teaching and Learning in Higher Education
	2018	University College Cork	Ph.D	Science

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Outreach Activities

	Description
	https://www.teagasc.ie/publications/2018/grass-fed-dairy-conference.php

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Journal Activities

	Journal	Role	To / From
	International Journal Of Dairy Technology	Editor	01-FEB-22 -
	International Dairy Journal	Referee	-
	Foods	Referee	-
	Foods	Guest Editor	-
	Irish Journal Of Agriculture And Food Research	Referee	-
	Nutrients	Referee	-
	Journal Of Dairy Science	Referee	-

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Other Activities

	Description

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Teaching Activities

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Teaching Interests

Dairy chemistry
Dairy processing
Food science and technology
Currently lecturing on modules 
FS2003 - Introductory Food Chemistry [Physical Chemistry]
FS2005 - Principles of Food Science and Technology
FS3010 - Science and Technology of Food Systems [A]
FS3015 - Dairy Processing and Preservation
FS3020 - Methods of Food Processing Analysis
FS3016 - Ingredient recovery from milk, whey and their co products
FS4022 - Topics in Food Science‍

Research Information

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Internal Collaborators

	Name	Institute	Country
	Prof. Alan Kelly	School of Food and Nutritional Sciences	IRELAND
	Dr. Seamus O'Mahony	School of Food and Nutritional Sciences	IRELAND

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External Collaborators

	Name	Organisation / Institute	Country
	Dr Noel McCarthy	Teagasc	IRELAND
	Prof. Todor Vasiljevic	Victoria University	AUSTRALIA
	Prof. Ian Givens	University of Reading	UNITED KINGDOM
	Prof. David Wishart	The Metabolomics Innovation Center	CANADA
	Prof. Lorraine Brennan	University College Dublin	IRELAND
	Dr Sean Hogan	Teagasc	IRELAND