World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
61
Citations
14272
World Ranking
9186
National Ranking
2598

Biology and Biochemistry

D-Index
62
Citations
14454
World Ranking
10742
National Ranking
4666

John R. Whitaker publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where John R. Whitaker sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 245 publications — 48th percentile

48% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

John R. Whitaker D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where John R. Whitaker sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 61 D-Index — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Research.com Recognitions

  • 1998 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

John R. Whitaker is affiliated with the University of California, Davis in the United States. Their research primarily falls within the field of Medicine, encompassing 139 publications with a focus on several subfields. These subfields include Cardiology and Cardiovascular Medicine, Emergency Medicine, Public Health, Environmental and Occupational Health, Pediatrics, Perinatology and Child Health, as well as Emergency Medical Services.

Their research covers a range of topics notable for their recurrence in published work. Key topics include:

  • Cardiac Arrhythmias and Treatments
  • Trauma and Emergency Care Studies
  • Cardiac electrophysiology and arrhythmias
  • Global Maternal and Child Health
  • Atrial Fibrillation Management and Outcomes
  • Cardiac pacing and defibrillation studies
  • Global Health and Surgery

John R. Whitaker has authored and contributed to several recent papers, illustrating the scope and diversity of their work in global health and surgery, trauma care, and cancer surgery outcomes. Notable recent publications are:

  • "Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries" (2021) published in The Lancet
  • "Impact of malnutrition on early outcomes after cancer surgery: an international, multicentre, prospective cohort study" (2023) published in The Lancet Global Health
  • "Assessing trauma care systems in low-income and middle-income countries: a systematic review and evidence synthesis mapping the Three Delays framework to injury health system assessments" (2021) published in BMJ Global Health
  • "Identifying, Prioritizing and Visually Mapping Barriers to Injury Care in Rwanda: A Multi-disciplinary Stakeholder Exercise" (2020) published in World Journal of Surgery
  • "Equitable access to quality trauma systems in low-income and middle-income countries: assessing gaps and developing priorities in Ghana, Rwanda and South Africa" (2022) published in BMJ Global Health

The range of publication venues where John R. Whitaker frequently publishes includes:

  • Heart Rhythm
  • BMJ Military Health
  • Zenodo (CERN European Organization for Nuclear Research)
  • BMJ Open
  • BMJ Global Health

Frequent collaborators in their work include Usha B. Tedrow, Justine Davies, Paul C. Zei, William H. Sauer, and Steven Niederer, reflecting a network of co-authorships in related medical and clinical research fields.

Among the recognitions received, John R. Whitaker was named a Fellow of the American Association for the Advancement of Science (AAAS) in 1998.

Best Publications

  • Determination of Molecular Weights of Proteins by Gel Filtration of Sephadex.

    Unknown

  • The biochemistry and control of enzymatic browning

    M.Victoria Martinez;John R. Whitaker

  • An absolute method for protein determination based on difference in absorbance at 235 and 280 nm

    John R. Whitaker;Per Einar Granum

  • Principles of enzymology for the food sciences

    John R. Whitaker

  • MODIFICATION OF PROTEINS BY POLYPHENOL OXIDASE AND PEROXIDASE AND THEIR PRODUCTS

    Günter Matheis;John R. Whitaker

  • Handbook of Food Enzymology

    John R. Whitaker;Alphons G. J. Voragen;Dominic W.S. Wong

  • Enzymatic browning and its prevention

    Chang Y. Lee;John R. Whitaker

  • Pectic substances, pectic enzymes and haze formation in fruit juices

    John R. Whitaker

  • Kinetics of Papain-Catalyzed Hydrolysis of α-N-Benzoyl-L-arginine Ethyl Ester and α-N-Benzoyl-L-argininamide1

    John R. Whitaker;Myron L. Bender

  • Chemical modification of papain. I. Reaction with the chloromethyl ketones of phenylalanine and lysine and with phenylmethyl-sulfonyl fluoride.

    John R. Whitaker;Javier Perez-Villaseñor

  • Isolation and characterization of polyphenol oxidase isozymes of clingstone peach.

    Thomas C. Wong;Bor S. Luh;John R. Whitaker

  • Effect of ascorbic acid, sodium bisulfite, and thiol compounds on mushroom polyphenol oxidase

    Avi Golan-Goldhirsh;John R. Whitaker

  • Development of flavor, odor, and pungency in onion and garlic.

    John R. Whitaker

  • Effects of alkali on proteins. Disulfides and their products.

    Aws S. Nashef;David T. Osuga;Honson S. Lee;Ahmed I. Ahmed

  • Purification and Some Properties of Two Polyphenol Oxidases from Bartlett Pears

    Nilo de Jesus Rivas;John R. Whitaker

  • Biocatalysis in agricultural biotechnology

    John R. Whitaker;Philip E. Sonnet

  • Purification and Properties of Chlorophyllase from Ailanthus altissima (Tree-of-Heaven)

    Roger F. McFeeters;Clinton O. Chichester;John R. Whitaker

  • Evaluation of the Biuret and Dye-Binding Methods for Protein Determination in Meats

    Judith Torten;J. R. Whitaker

  • Cloning, sequencing, purification, and crystal structure of Grenache (Vitis vinifera) polyphenol oxidase.

    V.M Virador;J.P Reyes Grajeda;A Blanco-Labra;E Mendiola-Olaya

  • Physical, chemical, and nutritional properties of common bean (Phaseolus) proteins.

    Valdemiro C. Sgarbieri;John R. Whitaker

  • PURIFICATION AND SOME PHYSICAL AND CHEMICAL PROPERTIES OF RED KIDNEY BEAN (PHASEOLUS VULGARIS) α‐AMYLASE INHIBITOR

    Joseph R. Powers;John R. Whitaker

  • The Handbook of Food Enzymology

    John R. Whitaker;Alphons G. J. Voragen;Dominic W. S. Wong

Frequent Co-Authors

Robert E. Feeney
Robert E. Feeney University of California, Davis
Alphons G. J. Voragen
Alphons G. J. Voragen Wageningen University & Research
Rickey Y. Yada
Rickey Y. Yada University of British Columbia
Fereidoon Shahidi
Fereidoon Shahidi Memorial University of Newfoundland
Richard W. Hartel
Richard W. Hartel University of Wisconsin–Madison
Al L. Tappel
Al L. Tappel University of California, Davis
Raymond L. Rodriguez
Raymond L. Rodriguez University of California, Davis
Diane M. Barrett
Diane M. Barrett University of California, Davis
Robert M. Hughes
Robert M. Hughes Oregon State University
Paul Gepts
Paul Gepts University of California, Davis

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