World's Best Scientists 2026 revealed!

D-Index & Metrics

Microbiology

D-Index
63
Citations
37158
World Ranking
2670
National Ranking
232

Overview

Petra Louis is affiliated with the University of Aberdeen in the United Kingdom and has an extensive research background primarily centered on the gut microbiome and its impact on human health. Their work spans biochemistry, genetics, molecular biology, and medicine, with a significant focus on molecular biology, food science, nutrition and dietetics, physiology, and genetics.

The scientist's research topics include:

  • Gut microbiota and health
  • Probiotics and fermented foods
  • Diet and metabolism studies
  • Food composition and properties
  • Microbial metabolites in food biotechnology
  • Nutritional studies and diet
  • Digestive system and related health

Petra Louis has published extensively, with notable papers among them:

  • "Maturation of the gut microbiome during the first year of life contributes to the protective farm effect on childhood asthma," 2020, Nature Medicine
  • "Vitamin Biosynthesis by Human Gut Butyrate-Producing Bacteria and Cross-Feeding in Synthetic Microbial Communities," 2020, mBio
  • "Pivotal Roles for pH, Lactate, and Lactate-Utilizing Bacteria in the Stability of a Human Colonic Microbial Ecosystem," 2020, mSystems
  • "Microbial lactate utilisation and the stability of the gut microbiome," 2022, Gut Microbiome
  • "Analysis of 1321 Eubacterium rectale genomes from metagenomes uncovers complex phylogeographic population structure and subspecies functional adaptations," 2020, Genome Biology

The scientist frequently publishes in venues such as:

  • mBio
  • Gut Microbiome
  • Proceedings of The Nutrition Society
  • Environmental Microbiology
  • bioRxiv (Cold Spring Harbor Laboratory)

Petra Louis collaborates regularly with several co-authors, including:

  • Freda M. Farquharson
  • Sylvia H. Duncan
  • Harry J. Flint
  • Alan W. Walker
  • Wendy R. Russell

The combination of these research areas, venues, and collaborations highlights a focus on understanding the complex interactions within the gut microbiome, its role in human health and disease, and the metabolic activities of gut bacteria. This interdisciplinary approach integrates molecular biology techniques with nutritional and microbial ecology perspectives.

Best Publications

  • The gut microbiota, bacterial metabolites and colorectal cancer

    Petra Louis;Georgina L. Hold;Harry J. Flint

  • Formation of propionate and butyrate by the human colonic microbiota

    Petra Louis;Harry J. Flint

  • Diversity, metabolism and microbial ecology of butyrate-producing bacteria from the human large intestine.

    Petra Louis;Harry James Flint

  • Microbial degradation of complex carbohydrates in the gut

    Harry J. Flint;Karen P. Scott;Sylvia H. Duncan;Petra Louis

  • The role of the gut microbiota in nutrition and health

    Harry J. Flint;Karen P. Scott;Petra Louis;Sylvia H. Duncan

  • Dominant and diet-responsive groups of bacteria within the human colonic microbiota.

    Alan W Walker;Jennifer Ince;Sylvia H Duncan;Lucy M Webster

  • Human colonic microbiota associated with diet, obesity and weight loss.

    Sylvia Helen Duncan;Gerald Lobley;Grietje Holtrop;J. Ince

  • Phylogenetic distribution of three pathways for propionate production within the human gut microbiota

    Nicole Reichardt;Sylvia Helen Duncan;Pauline Young;Alvaro Belenguer

  • Lactate-Utilizing Bacteria, Isolated from Human Feces, That Produce Butyrate as a Major Fermentation Product

    Sylvia Helen Duncan;Petra Louis;Harry James Flint

  • Ruminococcus bromii is a keystone species for the degradation of resistant starch in the human colon.

    Xiaolei Ze;Sylvia Helen Duncan;Petra Louis;Harry James Flint

  • Links between diet, gut microbiota composition and gut metabolism.

    Harry James Flint;Sylvia H. Duncan;Karen P. Scott;Petra Louis

  • Diversity of human colonic butyrate-producing bacteria revealed by analysis of the butyryl-CoA:acetate CoA-transferase gene.

    Petra Louis;Pauline Young;Grietje Holtrop;Harry James Flint

  • Effect of inulin on the human gut microbiota: stimulation of Bifidobacterium adolescentis and Faecalibacterium prausnitzii.

    Carlett Ramirez-Farias;Kathleen Slezak;Zoe Fuller;Alan Stuart Duncan

  • Two Routes of Metabolic Cross-Feeding between Bifidobacterium adolescentis and Butyrate-Producing Anaerobes from the Human Gut

    Alvaro Belenguer;Sylvia H. Duncan;A. Graham Calder;Grietje Holtrop

  • Understanding the effects of diet on bacterial metabolism in the large intestine

    Petra Louis;Karen Patricia Scott;Sylvia Helen Duncan;Harry James Flint

  • Protection of Escherichia coli cells against extreme turgor by activation of MscS and MscL mechanosensitive channels: identification of genes required for MscS activity.

    Natalia Levina;Sabine Tötemeyer;Neil R. Stokes;Petra Louis

  • The role of pH in determining the species composition of the human colonic microbiota

    Sylvia H. Duncan;Petra Louis;John M. Thomson;Harry J. Flint

  • Interactions and competition within the microbial community of the human colon: links between diet and health

    Harry James Flint;Sylvia Helen Duncan;Karen Patricia Scott;Petra Louis

  • Impact of diet and individual variation on intestinal microbiota composition and fermentation products in obese men

    Anne Salonen;Leo Lahti;Jarkko Salojärvi;Grietje Holtrop

  • Restricted Distribution of the Butyrate Kinase Pathway among Butyrate-Producing Bacteria from the Human Colon

    Petra Louis;Sylvia H. Duncan;Sheila I. McCrae;Jacqueline Millar

Frequent Co-Authors

Harry J. Flint
Harry J. Flint University of Aberdeen
Sylvia H. Duncan
Sylvia H. Duncan University of Aberdeen
Alan W. Walker
Alan W. Walker University of Aberdeen
Karen P. Scott
Karen P. Scott University of Aberdeen
Georgina L. Hold
Georgina L. Hold University of New South Wales
Erwin A. Galinski
Erwin A. Galinski University of Bonn
Andrew J. Stagg
Andrew J. Stagg Queen Mary University of London
Emad M. El-Omar
Emad M. El-Omar University of New South Wales
Julian Parkhill
Julian Parkhill University of Cambridge
Richard Ducatelle
Richard Ducatelle Ghent University

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