World's Best Scientists 2026 revealed!
George T. Macfarlane

George T. Macfarlane

D-Index & Metrics

Microbiology

D-Index
88
Citations
38349
World Ranking
744
National Ranking
72

George T. Macfarlane publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where George T. Macfarlane sits on this spectrum.

55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 264 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 233 scientists 205–214 publications: 207 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55 publications 679+

This scientist: 180 publications — 41st percentile

41% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

George T. Macfarlane D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where George T. Macfarlane sits on this spectrum.

40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 111 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 122 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 93 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 88 D-Index — 87th percentile

87% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

Overview

What is he best known for?

The fields of study he is best known for:

  • Internal medicine
  • Biochemistry
  • Enzyme

Fermentation, Biochemistry, Microbiology, Bifidobacterium and Prebiotic are his primary areas of study. The concepts of his Fermentation study are interwoven with issues in Digestion and Propionate. His Propionate research incorporates themes from Protein digestion, Butyrate and Microbial metabolism.

His specific area of interest is Biochemistry, where George T. Macfarlane studies Lipid metabolism. His work in Microbiology covers topics such as Bacteroides which are related to areas like Clostridium and Clostridia. George T. Macfarlane has researched Prebiotic in several fields, including Human nutrition and Inulin.

His most cited work include:

  • Regulation of short-chain fatty acid production (988 citations)
  • Characterization of Bacterial Communities in Feces from Healthy Elderly Volunteers and Hospitalized Elderly Patients by Using Real-Time PCR and Effects of Antibiotic Treatment on the Fecal Microbiota (567 citations)
  • Bacterial metabolism and health-related effects of galacto-oligosaccharides and other prebiotics (557 citations)

What are the main themes of his work throughout his whole career to date?

George T. Macfarlane spends much of his time researching Microbiology, Immunology, Internal medicine, Ulcerative colitis and Inflammatory bowel disease. His studies deal with areas such as 16S ribosomal RNA, Bacteroides, Large intestine, Biofilm and Mucin as well as Microbiology. His Immunology research incorporates elements of Intestinal mucosa, Gastrointestinal tract, Bifidobacterium and Diarrhea.

His work carried out in the field of Bifidobacterium brings together such families of science as Gut flora and Feces. His Ulcerative colitis research includes themes of Mucous membrane and Colitis. As a part of the same scientific family, he mostly works in the field of Inflammatory bowel disease, focusing on Synbiotics and, on occasion, Crohn's disease.

He most often published in these fields:

  • Microbiology (46.15%)
  • Immunology (25.64%)
  • Internal medicine (20.51%)

What were the highlights of his more recent work (between 2007-2015)?

  • Immunology (25.64%)
  • Microbiology (46.15%)
  • Ulcerative colitis (20.51%)

In recent papers he was focusing on the following fields of study:

His primary areas of investigation include Immunology, Microbiology, Ulcerative colitis, Inflammatory bowel disease and Internal medicine. His Immunology research integrates issues from Intestinal mucosa, Gastrointestinal tract, Bifidobacterium and Diarrhea. George T. Macfarlane combines subjects such as Gut flora and Feces with his study of Bifidobacterium.

His work deals with themes such as Bacterial colonization, Lactobacillus acidophilus, Cytokine, Biofilm and Barrett's oesophagus, which intersect with Microbiology. In his research, Crohn's disease and Disease is intimately related to Synbiotics, which falls under the overarching field of Inflammatory bowel disease. His Internal medicine research focuses on Gastroenterology and how it relates to Disease severity.

Between 2007 and 2015, his most popular works were:

  • Bacteria, colonic fermentation, and gastrointestinal health. (458 citations)
  • Fermentation in the human large intestine: its physiologic consequences and the potential contribution of prebiotics. (238 citations)
  • Recommendations for Probiotic Use—2011 Update (177 citations)

In his most recent research, the most cited papers focused on:

  • Internal medicine
  • Enzyme
  • Biochemistry

George T. Macfarlane mainly investigates Immunology, Inflammatory bowel disease, Ulcerative colitis, Synbiotics and Disease. His Immunology research is multidisciplinary, incorporating perspectives in Necrotizing enterocolitis, Intestinal mucosa and Microbiology. His research in Microbiology focuses on subjects like Dysbiosis, which are connected to Biofilm.

The study incorporates disciplines such as Probiotic, Bacteriotherapy, Immune system, Antibiotic-associated diarrhea and Diarrhea in addition to Inflammatory bowel disease. His research integrates issues of Human gastrointestinal tract, Gastrointestinal tract, Mucous membrane and Bifidobacterium in his study of Immune system. His study in Ulcerative colitis is interdisciplinary in nature, drawing from both Antibiotics and Etiology.

Best Publications

  • Short chain fatty acids in human large intestine, portal, hepatic and venous blood.

    J. H. Cummings;E. W. Pomare;W. J. Branch;C. P. E. Naylor

  • Regulation of short-chain fatty acid production

    Sandra Macfarlane;George T. Macfarlane

  • The control and consequences of bacterial fermentation in the human colon.

    J.H. Cummings;G.T. Macfarlane

  • Bacteria, colonic fermentation, and gastrointestinal health.

    George T Macfarlane;Sandra Macfarlane

  • Characterization of Bacterial Communities in Feces from Healthy Elderly Volunteers and Hospitalized Elderly Patients by Using Real-Time PCR and Effects of Antibiotic Treatment on the Fecal Microbiota

    Sabine Bartosch;Alemu Fite;George T. Macfarlane;Marion E. T. McMurdo

  • Synbiotic therapy (Bifidobacterium longum/Synergy 1) initiates resolution of inflammation in patients with active ulcerative colitis: a randomised controlled pilot trial

    Furrie E;Macfarlane S;Kennedy A;Cummings Jh

  • Bacterial metabolism and health-related effects of galacto-oligosaccharides and other prebiotics

    G.T. Macfarlane;H. Steed;S. Macfarlane

  • Comparison of fermentation reactions in different regions of the human colon

    G.T. Macfarlane;Glenn Gibson;J.H. Cummings

  • Prebiotic digestion and fermentation

    John H Cummings;George T Macfarlane;Hans N Englyst

  • Validation of a Three-Stage Compound Continuous Culture System for Investigating the Effect of Retention Time on the Ecology and Metabolism of Bacteria in the Human Colon

    George T. Macfarlane;S. Macfarlane;G.R. Gibson

  • Functional Food Properties of Non-Digestible Oligosaccharides: A Consensus Report From the ENDO Project (DGXII AIRII-CT94-1095)

    J Van Loo;J Cummings;Nathalie M. Delzenne;H Englyst

  • Changes in predominant bacterial populations in human faeces with age and with Clostridium difficile infection.

    M.J. Hopkins;G.T. Macfarlane

  • Protein degradation by human intestinal bacteria.

    G. T. Macfarlane;J. H. Cummings;C. Allison

  • Enumeration of human colonic bacteria producing phenolic and indolic compounds : effects of pH, carbohydrate availability and retention time on dissimilatory aromatic amino acid metabolism

    E.A. Smith;G.T. Macfarlane

  • Comparison of compositions and metabolic activities of fecal microbiotas in young adults and in antibiotic-treated and non-antibiotic-treated elderly subjects

    Emma J. Woodmansey;Marion E. T. McMurdo;George T. Macfarlane;Sandra Macfarlane

  • Fermentation in the human large intestine: its physiologic consequences and the potential contribution of prebiotics.

    George T. Macfarlane;Sandra Macfarlane

  • Probiotics and prebiotics: can regulating the activities of intestinal bacteria benefit health?

    George T Macfarlane;John H Cummings

  • Growth and activities of sulphate-reducing bacteria in gut contents of healthy subjects and patients with ulcerative colitis

    Glenn Gibson;J.H. Cummings;G.T. Macfarlane

  • Gastrointestinal effects of prebiotics

    J. H. Cummings;G. T. Macfarlane

  • Toll-like receptors-2 ,- 3 and -4 expression patterns on human colon and their regulation by mucosal-associated bacteria

    Elizabeth Furrie;Sandra Macfarlane;George Thomson;George T. Macfarlane

  • Role of intestinal bacteria in nutrient metabolism

    J.H. Cummings;G.T. Macfarlane

Frequent Co-Authors

Sandra Macfarlane
Sandra Macfarlane University of Dundee
John H. Cummings
John H. Cummings University of Dundee
Glenn R. Gibson
Glenn R. Gibson University of Reading
Andrew J. McBain
Andrew J. McBain University of Manchester
Mark E. Shirtliff
Mark E. Shirtliff University of Maryland, Baltimore
Miguel Gueimonde
Miguel Gueimonde Spanish National Research Council
Harry J. Flint
Harry J. Flint University of Aberdeen
Alan W. Walker
Alan W. Walker University of Aberdeen
Peter Gilbert
Peter Gilbert University of Manchester
Nathalie M. Delzenne
Nathalie M. Delzenne Université Catholique de Louvain

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