Our Organisation Search
Quick Links
Toggle: Topics

Dilip Rai

Research Officer

Research Interests

  • Nutraceuticals: extraction, characterisation and quantification of health-beneficial molecules from food.
  • Waste valorisation: recovery of high value ingredients from food processing by-products or underutilised resources for food preservation, functional food & nutraceutical applications.
  • Analytical Chemistry: Chromatography, Mass Spectrometry.

Bioactivities: In vitro antioxidant, antiinflammatory, anti-diabetic and anticholinesterase (memory) of extracts from food.

Current Projects

Algae4IBD: Algae produce compounds that can relieve pain and inflammation. (H2020, Grant N° 101000501) www.algae4ibd.eu

BSG-BioBev: Innovative plant-based functional beverages from brewers' spent  grain (Teagasc & H2020 Marie Curie funded)

Flavoromics: Cutting edge flavour chemistry technology and advanced analytical tools to identify dietary biomarkers in grass-fed milk and dairy products (DAFM funded, 2021R616)

RubusElite: Development of a novel high protein, polyphenol enriched dairy beverage for athletes and physically active (DAFM funded, 17/F/277)

U-PROTEIN: Unlocking Protein Resource Opportunities To Evolve Ireland’s Nutrition (DAFM funded, 2019/PROG/702) http://u-protein.ie/

BiOrbic: A world-leading SFI research centre devoted to the bioeconomy through excellence in research, new discovery and innovation  for the development of a sustainable, circular bioeconomy. (SFI funded, 16/RC/3889) https://biorbic.com )

SMI-BIO: Seaweed Microbe Interactions to enhance bioactive (DAFM funded, 15/F/698)


PhD: Karolinska Institute, Stockholm, Sweden.
BSc: DIT Kevin Street, degree awarded by Trinity College Dublin, Ireland

Professional Membership

Member of the Irish Mass Spectrometry Society

  1. Tsikrika, K.; Tzima, K.; Rai, D.K. Recent advances in anti-browning methods in minimally processed potatoes—a review. Journal of Food Processing and Preservation n/a, e16298.
  2. Rai, D. K., & Tzima, K. (2021). A Review on Chromatography–Mass Spectrometry Applications on Anthocyanin and Ellagitannin Metabolites of Blackberries and Raspberries. Foods, 10(9), 2150.
  3. Birsan, R. I., Wilde, P., Waldron, K. W., & Rai, D. K. (2021). Anticholinesterase Activities of Different Solvent Extracts of Brewer’s Spent Grain. Foods, 10(5), 930.
  4. Tzima, K., Brunton, N. P., McCarthy, N. A., Kilcawley, K. N., Mannion, D. T., & Rai, D. K. (2021). The Effect of Carnosol, Carnosic Acid and Rosmarinic Acid on the Oxidative Stability of Fat-Filled Milk Powders throughout Accelerated Oxidation Storage. Antioxidants, 10(5), 762.
  5. Tzima, K., Brunton, N. P., Lyng, J. G., Frontuto, D., & Rai, D. K. (2021). The effect of pulsed electric field as a pre-treatment step in ultrasound assisted extraction of phenolic compounds from fresh rosemary and thyme by-products. Innovative Food Science & Emerging Technologies, 69, 102644.
  6. Tsikrika, K., Walsh, D., Joseph, A., Burgess, C. M., & Rai, D. K. (2021). High-Pressure Processing and Ultrasonication of Minimally Processed Potatoes: Effect on the Colour, Microbial Counts, and Bioactive Compounds. Molecules, 26(9), 2614.
  7. Cabral, E. M., Mondala, J. R. M., Oliveira, M., Przyborska, J., Fitzpatrick, S., Rai, D. K., Sivagnanam, S. P., Garcia-Vaquero, M., O'Shea, D., & Devereux, M. (2021). Influence of molecular weight fractionation on the antimicrobial and anticancer properties of a fucoidan rich-extract from the macroalgae Fucus vesiculosus. International Journal of Biological Macromolecules, 186, 994-1002.
  8. Rajauria, G., Ravindran, R., Garcia-Vaquero, M., Rai, D. K., Sweeney, T., & O'Doherty, J. (2021). Molecular characteristics and antioxidant activity of laminarin extracted from the seaweed species Laminaria hyperborea, using hydrothermal-assisted extraction and a multi-step purification procedure. Food Hydrocolloids, 112, 106332.
  9. Zhang, Z., Poojary, M. M., Choudhary, A., Rai, D. K., Lund, M. N., & Tiwari, B. K. (2021). Ultrasound processing of coffee silver skin, brewer’s spent grain and potato peel wastes for phenolic compounds and amino acids: A comparative study. Journal of Food Science and Technology, 58(6), 2273-2282.
  10. Low, D. Y., Micheau, P., Koistinen, V. M., Hanhineva, K., Abrankó, L., Rodriguez-Mateos, A., da Silva, A. B., van Poucke, C., Almeida, C., & Andres-Lacueva, C. (2021). Data sharing in PredRet for accurate prediction of retention time: Application to plant food bioactive compounds. Food Chemistry, 357, 129757.
  1. Tzima, K., Rai, D.K., Lyng, J.G., & Brunton, N. P. (2019). Pulsed electric field as a pre-treatment in ultrasound assisted extraction of polyphenols from fresh rosemary and thyme. 2nd Food Chemistry Conference: Shaping the Future of Food Quality, Safety, Nutrition and Health, 17-19 September 2019, Seville, SPAIN.
  2. Birsan, R. I., Wilde, P., Waldron, K. W., & Rai, D. K. (2019). Recovery of polyphenols from brewer’s spent grains. 13th World Congress on Polyphenols Applications: Polyphenols Applications, MALTA, September 30 - October 1, 2019.
  3. Haren, D., Walsh, D., Kirke, D.A., Stengel, D.B., & Rai D.K. (2019). Anti-oxidant and anti-microbial activities of Irish seaweeds. 13th World Congress on Polyphenols Applications: Polyphenols Applications, MALTA, September 30 - October 1, 2019.
  4. Tsikrika, K., & Rai, D.K. (2019). “The effect of high pressure processing on polyphenol oxidase activity, nutrients, and phenolics in Irish potato cultivars” at 33rd EFFoST International Conference, 12-14 November 2019, Rotterdam, THE NETHERLANDS.(Oral presentation)
  5. Muldoon, A., Tsikrika, K., O’Brien, N., & Rai, D.K. (2019). “Spectrometry Studies on the Effect of High Pressure Processing on Polyphenol oxidase Inactivation, Glycaemic Index and Phenolics of Irish Potato Cultivars” at European Conference on Spectroscopy of Biological Molecules, 19-22 August 2019, Dublin, Ireland. (Oral presentation)

Current Student(s): 1. Gontorn Putsakaram (University College Dublin), 2. Rares Birsan (University of East Anglia, Norwich, UK).

Past Students: Aikaterini Tzima  (UCD), Dara Kirke (NUI Galway), Bibha Kumari (UCD), Nirupama Gangopadhyay (UCD), Antonik Pawel (NUI Galway)