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Gemma Walton

Email:
g.e.walton@reading.ac.uk
Phone:
+44 (0) 118 378 6652
Job title:
Associate Professor

Responsibilities:

FBMMSH and FBMMHD module convenor
Lab manager 3:18 and Gut Fermentation rooms Human Tissue Act management committee member

Office

3-29

Building location

Harry Nursten

Areas of interest

The gut microbial community develops alongside us, influenced by our lifestyles and importantly by what we eat. With the number of microbial genes outnumbering human genes it is not surprising that this community can have a great impact on our health, as such, through changes to our diet we can alter this community and impact on our health.

Primarily I am interested in this microbial community, how it supports health and how we can change this community through dietary intervention; such as consumption of prebiotics and probiotics.

I work with glass models of the colon, seeing how interventions may impact on microbial communities, experiments that we often use ahead of intervention studies.

Research centres and groups

Part of the Food Microbial Sciences Unit.

Publications

Virtanen, V. , Puljula, E. , Walton, G. ORCID: 0000-0001-5426-5635 , Woodward, M. , Karonen, M. (2023) NMR metabolomics and DNA sequencing of Escherichia coli and Staphylococcus aureus cultures treated with hydrolyzable tannins. Metabolites , 13 (3). ISSN: 2218-1989 | doi: https://dx.doi.org/10.3390/metabo13030320
Collins, S. , Gibson, G. , Stainton, G. , Bertocco, A. , Kennedy, O. ORCID: 0000-0003-3885-4872 , Walton, G. ORCID: 0000-0001-5426-5635 , Commane, D. (2023) Chronic consumption of a blend of inulin and arabinoxylan reduces energy intake in an ad libitum meal but does not influence perceptions of appetite and satiety: a randomised control‑controlled crossover trial. European Journal of Nutrition ISSN: 1436-6215 | doi: https://dx.doi.org/10.1007/s00394-023-03136-6
Alsultan, A. , Walton, G. ORCID: 0000-0001-5426-5635 , Andrews, S. ORCID: 0000-0003-4295-2686 , Clarke, S. (2023) Staphylococcus aureus FadB is a dehydrogenase that mediates cholate resistance and survival under human colonic conditions. Microbiology , 169 (3). ISSN: 1465-2080 | doi: https://dx.doi.org/10.1099/mic.0.001314
Monteagudo-Mera, A. , Shalunkhe, A. , Duhduh, A. , Walton, G. ORCID: 0000-0001-5426-5635 , Gibson, G. , Pereira, D. , Wijeyesekera, A. ORCID: 0000-0001-6151-5065 , Andrews, S. ORCID: 0000-0003-4295-2686 (2023) Impact of inorganic iron and haem on the human gut microbiota; an in vitro batch-culture approach. Frontiers in Microbiology , 14 ISSN: 1664-302X | doi: https://dx.doi.org/10.3389/fmicb.2023.1074637
Dahl, S. , Rolfe, V. , Walton, G. ORCID: 0000-0001-5426-5635 , Gibson, G. (2023) Gut microbial modulation by culinary herbs and spices. Food Chemistry , 409 pp 0. ISSN: 0308-8146 | doi: https://dx.doi.org/10.1016/j.foodchem.2022.135286

Gibbons, S. , Gurry, T. , Lampe, J. , Chakrabarti, A. , Dam, V. , Everard, A. , Goas, A. , Gross, G. , Kleerebezem, M. , Lane, J. , Maukonen, J. , Penna, A. , Pot, B. , Valdes, A. , Walton, G. ORCID: 0000-0001-5426-5635 , Weiss, A. , Yoghatama, Z. , Vanlet, N. , Miani, M. (2022) Perspective: leveraging the gut microbiota to predict personalized responses to dietary, prebiotic, and probiotic intervention. Advances in Nutrition ISSN: 2156-5376 | doi: https://dx.doi.org/10.1093/advances/nmac075
Hotchkiss, Jr., A. , Renye, Jr., J. , White, A. ORCID: 0000-0002-5875-8362 , Nunez, A. , Guron, G. ORCID: 0000-0002-2009-5807 , Chau, H. ORCID: 0000-0002-4696-7343 , Simon, S. , Poveda, C. , Walton, G. ORCID: 0000-0001-5426-5635 , Rastall, R. , Khoo, C. (2022) Cranberry arabino-xyloglucan and pectic oligosaccharides induce lactobacillus growth and short-chain fatty acid production. Microorganisms , 10 (7). ISSN: 2076-2607 | doi: https://dx.doi.org/10.3390/microorganisms10071346
Ramos, C. , Gibson, G. , Walton, G. ORCID: 0000-0001-5426-5635 , Magistro, D. , Kinnear, W. , Hunter, K. (2022) Systematic review of the effects of exercise and physical activity on the gut microbiome of older adults. Nutrients , 14 (3). ISSN: 2072-6643 | doi: https://dx.doi.org/10.3390/nu14030674

Liu, L. , Poveda, C. , Jenkins, P. ORCID: 0000-0003-1673-2903 , Walton, G. ORCID: 0000-0001-5426-5635 (2021) An in vitro approach to studying the microbial community and impact of pre and probiotics under anorexia nervosa related dietary restrictions. Nutrients , 13 (12). ISSN: 2072-6643 | doi: https://dx.doi.org/10.3390/nu13124447
Osman, A. , Zuffa, S. , Walton, G. ORCID: 0000-0001-5426-5635 , Fagbodun, E. , Zanos, P. , Georgiou, P. , Kitchen, I. , Swann, J. , Bailey, A. (2021) Post-weaning A1/A2 b-casein milk intake modulates depressive-like behavior, brain mopioid receptors, and the metabolome of rats. iScience , 24 (9). ISSN: 2589-0042 | doi: https://dx.doi.org/10.1016/j.isci.2021.103048
Collins, S. , Gibson, G. , Kennedy, O. , Walton, G. ORCID: 0000-0001-5426-5635 , Rowland, I. , Commane, D. (2021) Development of a prebiotic blend to influence in vitro fermentation effects, with a focus on propionate, in the gut. FEMS Microbiology Ecology , 97 (8). ISSN: 1574-6941 | doi: https://dx.doi.org/10.1093/femsec/fiab101
Iddrisu, I. , Monteagudo-Mera, A. , Poveda, C. , Pyle, S. , Shahzad, M. ORCID: 0000-0001-6565-1777 , Andrews, S. ORCID: 0000-0003-4295-2686 , Walton, G. ORCID: 0000-0001-5426-5635 (2021) Malnutrition and gut microbiota in children. Nutrients , 13 (8). pp 0. ISSN: 2072-6643 | doi: https://dx.doi.org/10.3390/nu13082727
Munoz-Munoz, J. , Ndeh, D. , Fernandez-Julia, P. , Walton, G. ORCID: 0000-0001-5426-5635 , Henrissat, B. , Gilbert, H. (2021) Sulfation of arabinogalactan proteins confers privileged nutrient status to Bacteroides plebeius. mBio ISSN: 2150-7511 | doi: https://dx.doi.org/10.1128/mBio.01368-21
Eastwood, J. , Walton, G. ORCID: 0000-0001-5426-5635 , Van Hemert, S. , Williams, C. ORCID: 0000-0003-4452-671X , Lamport, D. ORCID: 0000-0002-4592-0439 (2021) The effect of probiotics on cognitive function across the human lifespan: a systematic review. Neuroscience and Biobehavioral Reviews , 128 pp. 311-327. ISSN: 0149-7634 | doi: https://dx.doi.org/10.1016/j.neubiorev.2021.06.032
Leng, J. , McNally, S. , Walton, G. ORCID: 0000-0001-5426-5635 , Swann, J. , Proudman, C. , Argo, C. , Emery, S. , La Ragione, R. , Eustace, R. (2021) Hay vs. haylage: forage type influences the equine urinary metabonome and faecal microbiota. Equine Veterinary Journal ISSN: 2042-3306 | doi: https://dx.doi.org/10.1111/evj.13456
Walton, G. , Gibson, G. , Hunter, K. (2021) Mechanisms linking the human gut microbiome to prophylactic and treatment strategies for COVID-19. British Journal of Nutrition , 126 (2). pp. 219-227. ISSN: 0007-1145 | doi: https://dx.doi.org/10.1017/S0007114520003980
Brighina, S. , Poveda Turrado, C. , Restuccia, C. , Walton, G. , Fallico, B. , Oruna-Concha, M. ORCID: 0000-0001-7916-1592 , Arena, E. (2021) Detrimental effect on the gut microbiota of 1,2-dicarbonyl compounds after in vitro gastro-intestinal and fermentative digestion. Food Chemistry , 341 ISSN: 0308-8146 | doi: https://dx.doi.org/10.1016/j.foodchem.2020.128237

Poveda, C. , Pereira, D. , Lewis, M. , Walton, G. (2020) The impact of low-level iron supplements on the faecal microbiota of irritable bowel syndrome and healthy donors using in vitro batch cultures. Nutrients , 12 (12). ISSN: 2072-6643 | doi: https://dx.doi.org/10.3390/nu12123819
Puljula, E. , Walton, G. , Woodward, M. , Karonen, M. (2020) Antimicrobial activities of ellagitannins against Clostridiales perfringens, Escherichia coli, Lactobacillus plantarum and Staphylococcus aureus. Molecules , 25 (16). pp 0. ISSN: 1420-3049 | doi: https://dx.doi.org/10.3390/molecules25163714
Sergeev, I. , Aljutaily, T. , Walton, G. , Huarte, E. (2020) Effects of synbiotic supplement on human gut microbiota, body composition and weight loss in obesity. Nutrients , 12 (1). pp 0. ISSN: 2072-6643 | doi: https://dx.doi.org/10.3390/nu12010222
Leng, J. , Walton, G. ORCID: 0000-0001-5426-5635 , Swann, J. , Darby, A. , La Ragione, R. , Proudman, C. (2020) "Bowel-on-the-bench:" proof-of-concept of a three stage, in vitro, fermentation model of the equine large intestine. Applied and Environmental Microbiology , 86 (1). ISSN: 0099-2240 | doi: https://dx.doi.org/10.1128/AEM.02093-19

Byrne, C. , Blunt, D. , Burn, J. , Chambers, E. , Dagbasi, A. , Franco Becker, G. , Gibson, G. , Mendoza, L. , Murphy, K. , Poveda, C. , Ramgulam, A. , Tashkova, M. , Walton, G. , Washirasaksiri, C. , Frost, G. (2019) A study protocol for a randomised crossover study evaluating the effect of diets differing in carbohydrate quality on ileal content and appetite regulation in healthy humans. F1000Research , 8 pp. 258. ISSN: 2046-1402 | doi: https://dx.doi.org/10.12688/f1000research.17870.2
Christoforidou, Z. , Mora Ortiz, M. , Poveda, C. , Abbas, M. , Walton, G. , Bailey, M. , Lewis, M. (2019) Sexual dimorphism in immune development and in response to nutritional intervention in neonatal piglets. Frontiers in Immunology , 10 ISSN: 1664-3224 | doi: https://dx.doi.org/10.3389/fimmu.2019.02705
Alhinai, E. , Walton, G. , Commane, D. (2019) The role of the gut microbiota in colorectal cancer causation. International Journal of Molecular Sciences , 20 (21). ISSN: 1422-0067 | doi: https://dx.doi.org/10.3390/ijms20215295
de Carvalho, N. , Walton, G. , Poveda, C. , Silva, S. , Amorim, M. , Madureira, A. , Pintado, M. , Gibson, G. , Jauregi, P. (2019) Study of in vitro digestion of Tenebrio molitor flour for evaluation of its impact on the human gut microbiota. Journal of Functional Foods , 59 pp. 101-109. ISSN: 1756-4646 | doi: https://dx.doi.org/10.1016/j.jff.2019.05.024
Kristek, A. , Wiese, M. , Heuer, P. , Kosik, O. , Schar, M. , Soycan, G. , Alsharif, S. , Kuhnle, G. , Walton, G. , Spencer, J. (2019) Oat bran, but not its isolated bioactive β-glucans or polyphenols, have a bifidogenic effect in an in vitro fermentation model of the gut microbiota. British Journal of Nutrition , 121 (5). pp. 549-559. ISSN: 0007-1145 | doi: https://dx.doi.org/10.1017/S0007114518003501
Al Hinai, E. , Kullamethee, P. , Rowland, I. , Swann, J. , Walton, G. , Commane, D. (2019) Modelling the role of microbial p-cresol in colorectal genotoxicity. Gut Microbes , 10 (3). pp. 398-411. ISSN: 1949-0984 | doi: https://dx.doi.org/10.1080/19490976.2018.1534514

Kristek, A. , Schar, M. , Soycan, G. , Alsharif, S. , Kuhnle, G. , Walton, G. , Spencer, J. (2018) The gut microbiota and cardiovascular health benefits: a focus on wholegrain oats. Nutrition Bulletin , 43 (4). pp. 358-373. ISSN: 1471-9827 | doi: https://dx.doi.org/10.1111/nbu.12354
Alarifi, S. , Bell, A. , Walton, G. (2018) In vitro fermentation of gum acacia - impact on the faecal microbiota. International Journal of Food Sciences and Nutrition , 69 (6). pp. 696-704. ISSN: 1465-3478 | doi: https://dx.doi.org/10.1080/09637486.2017.1404970

Liu, Y. , Gibson, G. , Walton, G. (2017) A three-stage continuous culture approach to study the impact of probiotics, prebiotics and fat intake on faecal microbiota relevant to an over 60s population. Journal of Functional Foods , 32 pp. 238-247. ISSN: 1756-4646 | doi: https://dx.doi.org/10.1016/j.jff.2017.02.035
Alqurashi, R. , Alarifi, S. , Walton, G. , Costabile, A. , Rowland, I. , Commane, D. (2017) In vitro approaches to assess the effects of açai (Euterpe oleracea) digestion on polyphenol availability and the subsequent impact on the faecal microbiota. Food Chemistry , 234 pp. 190-198. ISSN: 0308-8146 | doi: https://dx.doi.org/10.1016/j.foodchem.2017.04.164

Liu, Y. , Gibson, G. , Walton, G. (2016) An in vitro approach to study effects of prebiotics and probiotics on the faecal microbiota and selected immune parameters relevant to the elderly. PLoS ONE , 11 (9). ISSN: 1932-6203 | doi: https://dx.doi.org/10.1371/journal.pone.0162604
Liu, Y. , Gibson, G. , Walton, G. (2016) Impact of high fat diets, prebiotics and probiotics on gut microbiota and immune function, with relevance to elderly populations. Nutrition and Aging , 3 (2-4). pp. 171-192. ISSN: 1879-7725 | doi: https://dx.doi.org/10.3233/NUA-150058
Rodrigues, D. , Walton, G. , Sousa, S. , Rocha-Santos, T. , Duarte, A. , Freitas, A. , Gomes, A. (2016) In vitro fermentation and prebiotic potential of selected extracts from seaweeds and mushrooms. LWT Food Science and Technology , 73 pp. 131-139. ISSN: 0023-6438 | doi: https://dx.doi.org/10.1016/j.lwt.2016.06.004
Farshim, P. , Walton, G. ORCID: 0000-0001-5426-5635 , Chakrabarti, B. ORCID: 0000-0002-6649-7895 , Givens, I. , Saddy, D. , Kitchen, I. , Swann, J. , Bailey, A. (2016) Maternal weaning modulates emotional behavior and regulates the gut-brain axis. Scientific Reports , 6 ISSN: 2045-2322 | doi: https://dx.doi.org/10.1038/srep21958

Costabile, A. , Walton, G. ORCID: 0000-0001-5426-5635 , Tzortzis, G. , Vulevic, J. , Charalampopoulos, D. ORCID: 0000-0003-1269-8402 , Gibson, G. (2015) Development of a bread delivery vehicle for dietary prebiotics to enhance food functionality targeted at those with metabolic syndrome. Gut Microbes , 6 (5). pp. 300-309. ISSN: 1949-0984 | doi: https://dx.doi.org/10.1080/19490976.2015.1064577
Blatchford, P. , Stoklosinski, H. , Walton, G. , Swann, J. , Gibson, G. , Gearry, R. , Ansell, J. (2015) Kiwifruit fermentation drives positive gut microbial and metabolic changes irrespective of initial microbiota composition. Bioactive Carbohydrates and Dietary Fibre , 6 (1). pp. 37-45. ISSN: 2212-6198 | doi: https://dx.doi.org/10.1016/j.bcdf.2015.07.001
Eid, N. , Osmanova, H. , Natchez, C. , Walton, G. , Costabile, A. , Gibson, G. , Rowland, I. , Spencer, J. (2015) Impact of palm date consumption on microbiota growth and large intestinal health: a randomised, controlled, cross-over, human intervention study. British Journal of Nutrition , 114 (8). pp. 1226-1236. ISSN: 1475-2662 | doi: https://dx.doi.org/10.1017/S0007114515002780
Vulevic, J. , Juric, A. , Walton, G. , Claus, S. , Tzortzis, G. , Toward, R. , Gibson, G. (2015) Influence of galacto-oligosaccharide mixture (B-GOS) on gut microbiota, immune parameters and metabonomics in elderly persons. British Journal of Nutrition , 114 (4). pp. 586-595. ISSN: 0007-1145 | doi: https://dx.doi.org/10.1017/S0007114515001889
Williams, C. , Walton, G. , Jiang, L. , Plummer, S. , Garaiova, I. , Gibson, G. (2015) Comparative analysis of intestinal tract models. Annual Review of Food Science and Technology , 6 (1). pp. 329-350. ISSN: 1941-1413 | doi: https://dx.doi.org/10.1146/annurev-food-022814-015429
Johnson, L. , Walton, G. , Psichas, A. , Frost, G. , Gibson, G. , Barraclough, T. (2015) Prebiotics modulate the effects of antibiotics on gut microbial diversity and functioning in vitro. Nutrients , 7 (6). pp. 4480-4497. ISSN: 2072-6643 | doi: https://dx.doi.org/10.3390/nu7064480
Costabile, A. , Walton, G. , Tzortzis, G. , Vulevic, J. , Charalampopoulos, D. , Gibson, G. (2015) Effects of orange juice formulation on prebiotic functionality using an in vitro colonic model sytem. PLoS ONE , 10 (3). pp 0. ISSN: 1932-6203 | doi: https://dx.doi.org/10.1371/journal.pone.0121955
Pereira, D. , Aslam, M. , Frazer, D. , Schmidt, A. , Walton, G. , McCartney, A. , Gibson, G. , Anderson, G. , Powell, J. (2015) Dietary iron depletion at weaning imprints low microbiome diversity and this is not recovered with oral nano Fe(III). MicrobiologyOpen , 4 (1). pp. 12-27. ISSN: 2045-8827 | doi: https://dx.doi.org/10.1002/mbo3.213
Bergillos-Meca, T. , Costabile, A. , Walton, G. , Moreno-Montoro, M. , Ruiz-Bravo, A. , Ruiz-López, M. (2015) In vitro evaluation of the fermentation properties and potential probiotic activity of Lactobacillus plantarum C4 in batch culture systems. LWT-Food Science and Technology , 60 (1). pp. 420-426. ISSN: 0023-6438 | doi: https://dx.doi.org/10.1016/j.lwt.2014.08.006

Eid, N. , Enani, S. , Walton, G. , Corona, G. , Costabile, A. , Gibson, G. , Rowland, I. , Spencer, J. (2014) The impact of date palm fruits and their component polyphenols, on gut microbial ecology, bacterial metabolites and colon cancer cell proliferation. Journal of nutritional science , 3 ISSN: 2048-6790 | doi: https://dx.doi.org/10.1017/jns.2014.16
Eid, N. , Walton, G. , Costabile, A. , Kuhnle, G. , Spencer, J. (2014) Polyphenols, glucosinolates, dietary fibre and colon cancer: Understanding the potential of specific types of fruit and vegetables to reduce bowel cancer progression. Nutrition and Aging , 2 (1). pp. 45-67. ISSN: 1879-7725 | doi: https://dx.doi.org/10.3233/NUA-130029
Stephens, K. , Walton, G. , Gibson, G. (2014) Gastrointestinal microbiota. In: Lomer, M. , (eds.) Advanced nutrition and dietetics in gastroenterology. Wiley-Blackwell , Chichester. pp. 41-47. ISBN: 9780470671320 | doi: https://dx.doi.org/10.1002/9781118872796.ch1.8
Frost, G. , Walton, G. ORCID: 0000-0001-5426-5635 , Swann, J. , Psichas, A. , Costabile, A. , Johnson, L. , Sponheimer, M. , Gibson, G. , Barraclough, T. (2014) Impacts of plant-based foods in ancestral hominin diets on the metabolism and function of gut microbiota in vitro. mBio , 5 ISSN: 2150-7511 | doi: https://dx.doi.org/10.1128/mbio.00853-14
Khalil, N. , Walton, G. , Gibson, G. , Tuohy, K. , Andrews, S. (2014) In vitro batch cultures of gut microbiota from healthy and ulcerative colitis (UC) subjects suggest that sulphate-reducing bacteria levels are raised in UC and by a protein-rich diet.. International Journal of Food Science and Nutrition , 65 (1). pp. 79-88. ISSN: 1465-3478 | doi: https://dx.doi.org/10.3109/09637486.2013.825700

Hobden, M. , Martin-Morales, A. , Guerin-Deremaux, L. , Wils, D. , Costabile, A. , Walton, G. , Rowland, I. , Kennedy, O. , Gibson, G. (2013) In Vitro Fermentation of NUTRIOSE® FB06, a wheat dextrin soluble fibre, in a continuous culture human colonic model system. PLoS ONE , 8 (10). | doi: https://dx.doi.org/10.1371/journal.pone.0077128
Cueva , C. , Sánchez-Patán, F. , Monagas , M. , Walton, G. , Gibson, G. , Martín-Álvarez , P. , Bartolomé, B. , Moreno-Arribas , M. (2013) In vitro fermentation of grape seed flavan-3-ol fractions by human faecal microbiota: changes in microbial groups and phenolic metabolites. FEMS Microbiology Ecology , 83 (3). pp. 792-805. ISSN: 1574-6941 | doi: https://dx.doi.org/10.1111/1574-6941.12037

Toward, R. , Walton, G. , Gibson, G. (2012) Immunosenescence and the gut microbiota: the role of probiotics and prebiotics. Nutrition and Aging , 1 (3-4). pp. 167-180. ISSN: 1879-7725 | doi: https://dx.doi.org/10.3233/NUA-130014
Walton, G. , Lu, C. , Trogh, I. , Arnaut, F. , Gibson, G. (2012) A randomised, double-blind, placebo controlled cross-over study to determine the gastrointestinal effects of consumption of arabinoxylanoligosaccharides enriched bread in healthy volunteers. Nutrition Journal , 11 (1). ISSN: 1475-2891 | doi: https://dx.doi.org/10.1186/1475-2891-11-36
Walton, G. , Swann, J. , Gibson, G. (2012) Prebiotics for gut microbiota modulation through diet. In: Rosenberg, E. , DeLong, E. , Lory, S. , Stackebrandt, E. , (eds.) The Prokaryotes: A Handbook on the Biology of Bacteria 4th Edition. Prokaryotes pp. 25-43. ISBN: 9780387334882
Toward, R. , Montandon, S. , Walton, G. , Gibson, G. (2012) Effect of prebiotics on the human gut microbiota of elderly persons. Gut Microbes , 3 (1). pp. 57-60. ISSN: 1949-0984 | doi: https://dx.doi.org/10.4161/gmic.19411
Hidalgo, M. , Oruna-Concha, M. , Kolida, S. , Walton, G. , Kallithraka, S. , Spencer, J. , Gibson, G. , de Pascual-Teresa, S. (2012) Metabolism of anthocyanins by human gut microflora and their influence on gut bacterial growth. Journal of Agricultural and Food Chemistry , 60 (15). pp. 3882-3890. ISSN: 0021-8561 | doi: https://dx.doi.org/10.1021/jf3002153
Sánchez-Patán, F. , Cueva, C. , Monagas, M. , Walton, G. , Gibson, G. , Quintanilla-López, J. , Lebrón-Aguilar, R. , Martín-Álvarez, P. , Moreno-Arribas, M. , Bartolomé, B. (2012) In vitro fermentation of a red wine extract by human gut microbiota: changes in microbial groups and formation of phenolic metabolites. Journal of Agricultural and Food Chemistry , 60 (9). pp. 2136-2147. ISSN: 0021-8561 | doi: https://dx.doi.org/10.1021/jf2040115
Sánchez-Patán, F. , Cueva, C. , Monagas, M. , Walton, G. , Gibson, G. , Martín-Álvarez, P. , Moreno-Arribas, M. , Bartolomé, B. (2012) Gut microbial catabolism of grape seed flavan-3-ols by human faecal microbiota. Targetted analysis of precursor compounds, intermediate metabolites and end-products.. Food Chemistry , 131 (1). pp. 337-347. ISSN: 0308-8146 | doi: https://dx.doi.org/10.1016/j.foodchem.2011.08.011
Costabile, A. , Fava, F. , Roytio, H. , Forssten, S. , Olli, K. , Klievink, J. , Rowland, I. , Ouwehand, A. , Rastall, R. , Gibson, G. , Walton, G. (2012) Impact of polydextrose on the faecal microbiota: a double-blind, crossover, placebo-controlled feeding study in healthy human subjects. British Journal of Nutrition , 108 (3). pp. 471-481. ISSN: 1475-2662 | doi: https://dx.doi.org/10.1017/S0007114511005782
Walton, G. , van deb Heauvel, E. , Kosters , M. , Rastall, R. , Tuohy, K. , Gibson, G. (2012) A randomised crossover study investigating the effects of galacto-oligosaccharides on the faecal microbiota in men and women over 50 years of age. British Journal of Nutrition , 107 (10). pp. 1466-1475. ISSN: 1475-2662 | doi: https://dx.doi.org/10.1017/S0007114511004697

Walton, G. and Gibson, G. (2010) Gut microbiota, probiotics, prebiotics and colorectal cancer. In: Milner, J. and Romagnolo, D. , (eds.) Bioactive compounds and cancer. Humana Press/Springer pp. 181-193. | doi: https://dx.doi.org/10.1007/978-1-60761-627-6
Walton, G. , Lim, Y. , Ng, Y. , Hannah, R. , Hunter, K. (2010) Prebiotics and probiotics: potential strategies for reducing travellers' diarrhoea in athletes competing abroad. Food Science and Technology Bulletin: Functional Foods , 6 (9). pp. 105-114. ISSN: 1476-2137
Walton, G. , Rastall, R. , Martini, M. , Williams, C. , Jeffries, R. , Gibson, G. (2010) A double-blind, placebo controlled human study investigating the effects of coffee derived manno-oligosaccharides on the faecal microbiota of a healthy adult population.. International Journal of Probiotics and Prebiotics , 5 (2). pp. 75-84. ISSN: 1555-1431

Tuohy, K. , Gougoulias, C. , Shen, Q. , Walton, G. , Fava, F. , Ramnani, P. (2009) Studying the Human Gut Microbiota in the Trans-Omics Era - Focus on Metagenomics and Metabonomics. Current Pharmaceutical Design , 15 (11). pp. 1415-1427. ISSN: 1381-6128

Walton, . and Gibson, . (2007) Prebiotics and bowel cancer. Current Topics in Nutraceutical Research , 5 (1). pp. 19-28. ISSN: 1540-7535