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D-Index & Metrics

Biology and Biochemistry

D-Index
68
Citations
16717
World Ranking
7780
National Ranking
37

Nora M. O'Brien publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Nora M. O'Brien sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 417 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 196 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 59 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 275 publications — 73rd percentile

73% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Nora M. O'Brien D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Nora M. O'Brien sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 71 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 68 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Nora M. O'Brien is affiliated with University College Cork in Ireland. Their research contributions span multiple areas within medicine, biochemistry, genetics and molecular biology, and agricultural and biological sciences. The scientist's work focuses notably on nutrition and dietetics, physiology, molecular biology, biochemistry, and food science.

Their research topics include protein hydrolysis and bioactive peptides, infant nutrition and health, clinical nutrition and gastroenterology, biochemical effects in animals, meat and animal product quality, antioxidant activity and oxidative stress, and diet and metabolism studies.

Nora M. O'Brien has authored several recent papers, among them:

  • A comprehensive review on carotenoids in foods and feeds: status quo, applications, patents, and research needs (2021) published in Critical Reviews in Food Science and Nutrition
  • Carotenoids: Considerations for Their Use in Functional Foods, Nutraceuticals, Nutricosmetics, Supplements, Botanicals, and Novel Foods in the Context of Sustainability, Circular Economy, and Climate Change (2021) published in Annual Review of Food Science and Technology
  • Assessment of the biological activity of fish muscle protein hydrolysates using in vitro model systems (2021) published in Food Chemistry
  • Whey for Sarcopenia; Can Whey Peptides, Hydrolysates or Proteins Play a Beneficial Role? (2020) published in Foods
  • Influence of thermal processing on the physicochemical properties of bovine lactoferrin (2021) published in International Dairy Journal

Frequent co-authors collaborating with Nora M. O'Brien include:

  • Shauna Heffernan
  • James A. O'Mahony
  • Linda Giblin
  • David Goulding
  • Jonathan O'Regan

The scientist has published multiple papers in the following venues:

  • Food Chemistry
  • Foods
  • Food Hydrocolloids
  • Proceedings of The Nutrition Society
  • Critical Reviews in Food Science and Nutrition

Best Publications

  • Dietary flavonols: chemistry, food content, and metabolism.

    S.Aisling Aherne;Nora M O’Brien

  • Phytosterol, Squalene, Tocopherol Content and Fatty Acid Profile of Selected Seeds, Grains, and Legumes

    E. Ryan;K. Galvin;T. P. O’Connor;A. R. Maguire

  • Fatty acid profile, tocopherol, squalene and phytosterol content of walnuts, almonds, peanuts, hazelnuts and the macadamia nut.

    L. S. Maguire;S. M. O'Sullivan;K. Galvin;T. P. O'Connor

  • Effect of flavonoids and vitamin E on cyclooxygenase-2 (COX-2) transcription.

    Karen A. O'Leary;Karen A. O'Leary;Karen A. O'Leary;Sonia De Pascual-Tereasa;Sonia De Pascual-Tereasa;Paul W. Needs;Yong Ping Bao

  • Casein-derived bioactive peptides: biological effects, industrial uses, safety aspects and regulatory status.

    Martha Phelan;Aisling Aherne;Richard J. FitzGerald;Nora M. O'Brien

  • UV-B-Induced Secondary Plant Metabolites - Potential Benefits for Plant and Human Health

    M. Schreiner;I. Mewis;S. Huyskens-Keil;M. A. K. Jansen

  • Metabolism of quercetin-7- and quercetin-3-glucuronides by an in vitro hepatic model: the role of human β-glucuronidase, sulfotransferase, catechol-O-methyltransferase and multi-resistant protein 2 (MRP2) in flavonoid metabolism

    Karen A O’Leary;Andrea J Day;Paul W Needs;Fred A Mellon

  • Bioactivities of glycoalkaloids and their aglycones from Solanum species.

    Sinead Eileen Milner;Nigel Patrick Brunton;Peter Wyn Jones;Nora Mary O'Brien

  • Fatty acid profile, tocopherol, squalene and phytosterol content of brazil, pecan, pine, pistachio and cashew nuts

    E. Ryan;K. Galvin;T. P. O'Connor;A. R. Maguire

  • Evaluation of the antioxidant potential of grape seed and bearberry extracts in raw and cooked pork.

    R. Carpenter;M.N. O’Grady;Y.C. O’Callaghan;N.M. O’Brien

  • Plant stress and human health: Do human consumers benefit from UV-B acclimated crops?

    Marcel A.K. Jansen;Kathleen Hectors;Nora M. O’Brien;Yves Guisez

  • In vitro and cellular antioxidant activities of seaweed extracts prepared from five brown seaweeds harvested in spring from the west coast of Ireland

    A.M. O’Sullivan;Y.C. O’Callaghan;M.N. O’Grady;B. Queguineur

  • Cheese: physical, biochemical, and nutritional aspects.

    P.F. Fox;T.P. O'Connor;P.L.H. Mcsweeney;T.P. Guinee

  • Flavonoid glucuronides are substrates for human liver β-glucuronidase

    Karen A O'Leary;Karen A O'Leary;Andrea J Day;Paul W Needs;William S Sly

  • Mechanism of protection by the flavonoids, quercetin and rutin, against tert-butylhydroperoxide- and menadione-induced DNA single strand breaks in Caco-2 cells.

    Sharon A. Aherne;Nora M. O’Brien

  • Micellarisation of carotenoids from raw and cooked vegetables.

    L. Ryan;O. O’Connell;L. O’Sullivan;S. A. Aherne

  • A comprehensive review on carotenoids in foods and feeds: status quo, applications, patents, and research needs

    Antonio J Meléndez-Martínez;Anamarija I Mandić;Filippos Bantis;Volker Böhm

  • Protection by the flavonoids myricetin, quercetin, and rutin against hydrogen peroxide-induced DNA damage in Caco-2 and Hep G2 cells.

    S. A. Aherne;N. M. O'Brien

  • Involvement of oxysterols in age-related diseases and ageing processes.

    Amira Zarrouk;Anne Vejux;John Mackrill;Yvonne O’Callaghan

  • Effect of dietary supplementation with carotenoids on xenobiotic metabolizing enzymes in the liver, lung, kidney and small intestine of the rat.

    Christopher Jewell;Nora M. O'Brien

Frequent Co-Authors

Richard J. FitzGerald
Richard J. FitzGerald University of Limerick
Carmel Mothersill
Carmel Mothersill McMaster University
John O'Halloran
John O'Halloran University College Cork
David Sheehan
David Sheehan University College Cork
Joseph P. Kerry
Joseph P. Kerry University College Cork
Anita R. Maguire
Anita R. Maguire University College Cork
Soottawat Benjakul
Soottawat Benjakul Prince of Songkla University
Timothy P. Guinee
Timothy P. Guinee Teagasc - The Irish Agriculture and Food Development Authority
Patrick A. Morrissey
Patrick A. Morrissey University College Cork
Nigel P. Brunton
Nigel P. Brunton University College Dublin

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