Research Profile

Tom O'Callaghan

Biography

Dr. Tom O’Callaghan is a Senior Lecturer of Sustainable Dairy Processing 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 multi-disciplinary research crosses over several domains including food chemistry, nutrition, processing technologies, analytics and sustainability, with particular emphasis on the quality, nutritional and functional characteristics of milk and dairy products.
Tom is the Founder and PI of the Food Chemistry and Production Research Group in UCC situated in the Dairy Science Centre of Excellence in FNS. My research is focused on examining the impact of agricultural practices on the quality and characteristics of dairy across the supply chain with interests on Grass-Fed dairy, the rumen and milk metabolome, PAT tools for prediction and authentication of food products, and understanding the changes occurring to milk during manufacture, for more sustainable dairy processing.
Tom is a Principal Investigator with the Dairy Processing Technology Centre and a Funded Investigator with VistaMilk, an SFI research centre.

Research Interests

Tom’s research has focused on food 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

 ProjectFunding
Body
Start DateEnd DateAward
Examination of the Irish milk metabolome for improved prediction of milk processabilityDepartment of Agriculture Fisheries & Forestry (DAFF)01-APR-2231-MAR-26€475,381.00
Uncovering Alternative Protein Potential via Fermentation TechnologyDepartment of Agriculture Fisheries & Forestry (DAFF)01-DEC-2330-NOV-27-€295,000.00
Assessing nitrogen conversion factors for milk proteinsTeagasc01-OCT-2330-SEP-27€100,000.00
The impact of methane-reducing feed additives on milk composition and quality.Teagasc01-SEP-2331-AUG-27€100,000.00
The fate of chlorate in dairy processesTeagasc01-OCT-1730-SEP-21€112,000.00
Impact of red-clover inclusion into perennial ryegrass silage swards on animal performance, product quality and environmental efficiencyTeagasc01-SEP-2230-SEP-26€99,750.00
PASTURE-NUE: A multidisciplinary approach to increasing the nitrogen use efficiency of pasture-based systemsDepartment of Agriculture Fisheries & Forestry (DAFF)01-DEC-2131-OCT-26€202,400.00
Investigating the effect of including white clover into perennial ryegrass swardsTeagasc01-JAN-2220-FEB-26€99,083.00
Development of strategies to reduce methane in dairy cowsTeagasc01-OCT-2130-SEP-25€96,000.00
Dairy Processing Technology Centre Phase 2Enterprise Irl01-AUG-2031-JUL-25€238,875.00
Research Start Up Fund.Miscellaneous01-SEP-2131-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 productsTeagasc01-OCT-1930-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.Teagasc01-OCT-2130-SEP-25€98,750.00
Comprehensive review of the advantages and disadvantages of pasture feedingDepartment of Agriculture, Fisheries & Food (DAFF)01-NOV-1831-OCT-19€67,000.00
Understanding the fate of N-(n-butyl) thiophosphoric triamide (NBPT) and other inhibitors during milk processingDepartment of Agriculture, Fisheries & Food (DAFF)01-OCT-1830-SEP-22€112,500.00
Food For Health Ireland 3: Grass Fed PilarEnterprise Ireland01-OCT-1930-NOV-24€1,330,000.00
Examination of the factors affecting the composition, quality and vitality of bovine colostrumTeagasc01-OCT-2029-SEP-24€96,000.00
The Investigation of Milk Fat Depression in Dairy Cattle.Teagasc01-OCT-2030-SEP-24€97,750.00

Contract Researchers

 Researcher NameProjectRoleFunding Body
Nisha SutharPastureNuePostgraduate ResearcherDepartment of Agriculture, Fisheries & Food (DAFF)
Paula RojasMetaBo-BainnePostgraduate ResearcherDepartment of Agriculture, Fisheries & Food (DAFF)
Dr Raghunath PariyaniMetaBo-BainnePostdoctoral ResearcherDepartment of Agriculture, Fisheries & Food (DAFF)
Tom LongDPTCPostgraduate ResearcherEnterprise Ireland
Wishmore GwalaThe impact of methane-reducing feed additives on milk composition and qualityPostgraduate ResearcherTeagasc
Richard PageConsequences 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 cowsPostgraduate ResearcherTeagasc
Christopher HeffernanThe investigation of milk fat depression in dairy cattle under intensive pasture based management systemsPostgraduate ResearcherTeagasc
Mathilde Chaize**Impact of red-clover inclusion into perennial ryegrass silage swards on animal performance, product quality and environmental efficiency**Postgraduate ResearcherTeagasc
Eoin WimsInvestigating the effect of including white clover into perennial ryegrass swards with varying levels of nitrogen fertiliser application on environmental nitrogen emissions, milk production efficiency, composition and functionalityPostgraduate ResearcherTeagasc

Publications

Peer Reviewed Journals

 YearPublication
(2024)'From lab-based to in-line: Analytical tools for the characterization of whey protein denaturation and aggregation–A review'
Finnegan, Eoin W.,Goulding, David A.,O'Callaghan, T. F.,O'Mahony, James A. (2024) 'From lab-based to in-line: Analytical tools for the characterization of whey protein denaturation and aggregation–A review'. Comprehensive Reviews in Food Science and Food Safety, 23 (2)   [DOI] [Details]
(2024)'Impact of feeding regimes and lactation stage on sensory attributes of Cheddar cheese'
McGuinness, Lauren,Timlin, Mark,Murphy, John P.,Hennessy, Deirdre,Fitzpatrick, Ellen,McCarthy, Kieran,O'Donovan, Michael,O'Callaghan, Tom F.,Kilcawley, Kieran N.,Dolores O'Riordan, E.,Brodkorb, Andre,Sheehan, Jeremiah J.,Feeney, Emma L. (2024) 'Impact of feeding regimes and lactation stage on sensory attributes of Cheddar cheese'. Food Research International,   [DOI] [Details]
(2024)'Triglyceride and fatty acid composition of bovine colostrum and transition milk in pasture-based dairy cows supplemented prepartum with inorganic selenium, organic selenium or rumen-protected choline'
McDermott, Fionnuala,Kennedy, Emer,Drouin, Gaetan,Brennan, Lorraine,O'Callaghan, Tom F.,Egan, Michael,Hogan, Sean A. (2024) 'Triglyceride and fatty acid composition of bovine colostrum and transition milk in pasture-based dairy cows supplemented prepartum with inorganic selenium, organic selenium or rumen-protected choline'. International Journal of Dairy Technology, n/a (n/a)   [DOI] [Details]
(2024)'Relative quantitative proteomic profiling of bovine colostrum and transition milk at onset of lactation'
Masterson, Hannah K.,O'Callaghan, Tom F.,O'Donovan, Michael,Murphy, John Paul,Sugrue, Katie,Owens, Rebecca A.,Hickey, Rita M. (2024) 'Relative quantitative proteomic profiling of bovine colostrum and transition milk at onset of lactation'. International Dairy Journal, 148   [DOI] [Details]
(2023)'Impact of varying levels of pasture allowance on the nutritional quality and functionality of milk throughout lactation'
Timlin, Mark,Fitzpatrick, Ellen,McCarthy, Kieran,Tobin, John T.,Murphy, Eoin G.,Pierce, Karina M.,Murphy, John P.,Hennessy, Deirdre,O'Donovan, Michael,Harbourne, Niamh,Brodkorb, André,O'Callaghan, Tom F. (2023) 'Impact of varying levels of pasture allowance on the nutritional quality and functionality of milk throughout lactation'. Journal of Dairy Science,   [DOI] [Details]
(2023)'Relative quantitative proteomic profiling of bovine colostrum and transition milk at onset of lactation'
Masterson, Hannah K.,O’ Callaghan, Tom F.,O'Donovan, Michael,Murphy, John Paul,Sugrue, Katie,Owens, Rebecca A.,Hickey, Rita M. (2023) 'Relative quantitative proteomic profiling of bovine colostrum and transition milk at onset of lactation'. International Dairy Journal,   [DOI] [Details]
(2023)'Isolation and identification of chlorate-reducing Hafnia sp. from milk'
McCarthy, William P. and Srinivas, Meghana and Danaher, Martin and Connor, Christine O. and Callaghan, Tom F. O. and van Sinderen, Douwe and Kenny, John and Tobin, John T. (2023) 'Isolation and identification of chlorate-reducing Hafnia sp. from milk'. Microbiology, 169 (7)   [DOI] [Details]
(2023)'The Protein Composition and In Vitro Digestive Characteristics of Animal- versus Plant-Based Infant Nutritional Products'
Byrne, Margaret E.,Arranz, Elena,Bot, Francesca,Gómez-Mascaraque, Laura G.,Tobin, John T.,O’Mahony, James A.,O’Callaghan, Tom F. (2023) 'The Protein Composition and In Vitro Digestive Characteristics of Animal- versus Plant-Based Infant Nutritional Products'. Foods, 12 (7)   [Details]
(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]

Conference Publications

 YearPublication
(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]

Thesis/Dissertation

 YearPublication
(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]

Book Chapters

 YearPublication
(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]

Technical Publication

 YearPublication
(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]

Professional Activities

Honours and Awards

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

Professional Associations

 AssociationFunctionFrom / To
American Dairy Science Association Member01-JAN-20 /
Society of Dairy Technology Member01-JUN-22 /

Conference Contributions

 YearPublication
(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]

Committees

 CommitteeFunctionFrom / To
School EDI Committee Member2022 /
FSAI Ad Hoc Committee on Analytical Methods Member2022 /
School Research Committee Member2021 /
International Dairy Federation National Committee Member2017 /
Public Enagagement & Outreach Comittee Member2020 / 2021

Employment

 EmployerPositionFrom / To
Teagasc Research Officer (Permanent)06-MAR-17 / 08-MAY-20

Education

 YearInstitutionQualificationSubject
2014University College Cork B.ScFood Science
2020University College Cork Post Graduate CertificateTeaching and Learning in Higher Education
2021University College Cork Post Graduate DiplomaTeaching and Learning in Higher Education
2018University College Cork Ph.DScience

Outreach Activities

 Description

Organising Committee

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

Journal Activities

 JournalRoleTo / From
International Journal Of Dairy Technology Editor01-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-

Other Activities

 Description

Teaching Activities

Teaching Interests

Dairy Chemistry, Dairy Processing, Physical Chemistry, Food science and technology

Currently lecturing on modules 
FS2003 Introductory Food Chemistry -  Physical Chemistry (Module Coordinator)
FS2005 Principles of Food Science and Technology
FS3015 Dairy Processing and Preservation (Module Coordinator)
FS3016 Ingredient Recovery from Milk, Whey and their Co-Products
FS3020 Methods of Food Processing and Analysis
FS3021 Professional Skills for Food Scientists
NT2023 Animal Nutrition
FS3023 Milk Production and Quality for Processing (Module Coordinator)
NT4012 Sports and Exercise Nutrition
FS6103 Novel Processing Technologies and Ingredients
FS6212 Technologies for Fractionation, Concentration and Drying in Dairy Processing (Coordinator)·     FITU- Production Supervisory Training Course·
FITU – Concentration and Drying (Academic Director) (2 day training course)

Recent Postgraduates

 Graduation YearStudent NameInstitutionDegree TypeThesis Title
2022Jonathan Magan University College CorkDoctor of Food Science (Food Technology)Influence of dietary factors on the macro and microcomposition of bovine milk for use in protein ingredient powder manufacture
2024Janhavi Sanjay Dhumal University College CorkMscExamination of the impact of pasture allowance and seasonality on selected milk fat-soluble carotenoids and micronutrients
2023William P McCarthy Dublin Institute of TechnologyDOCTOR OF PHILOSOPHYUnderstanding the Entry, Partition, and Fate of Chlorates in Dairy ProcessesUnderstanding the Entry, Partition, and Fate of Chlorates in Dairy Processes
2021Margaret Byrne University College CorkMscFunctional Characteristics of Infant Formula from Animal and Plant Sourced Ingredients
2023Conor Horan University College CorkMscExamination of the metabolome of infant formulae from plant versus animal-based sources
2023Paula Rojas University College CorkMscExamination of the interspecies effects on the milk metabolome

Research Information

External Collaborators

 NameOrganisation / InstituteCountry
Dr Noel McCarthy TeagascIRELAND
Prof Brendan Murphy University College DublinIRELAND
Prof Karina Pierce University College DublinIRELAND
Prof. Todor Vasiljevic Victoria UniversityAUSTRALIA
Prof. Ian Givens University of ReadingUNITED KINGDOM
Prof. David Wishart The Metabolomics Innovation CenterCANADA
Prof. Lorraine Brennan University College DublinIRELAND
Dr Sean Hogan TeagascIRELAND

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School of Food and Nutritional Sciences

School of Food and Nutritional Sciences, Room 240 Food Science Building, University College, Cork

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