George Tzortzis

6.4k citations

58 papers · 4.8k indexed · 1 hit paper · h-index 33

Co-authors: Glenn R. Gibson Jelena Vulevic Dimitris Charalampopoulos Michael T. Cook Vitaliy V. Khutoryanskiy Athanasios Goulas Philip W. J. Burnet Alexandra Drakoularakou
Topics: Gut microbiota and health (17 papers)Probiotics and Fermented Foods (16 papers)Microbial Metabolites in Food Biotechnology (16 papers)
Cited by: Biological Psychiatry Gastroenterology Nutrition and Dietetics
Journals: SHILAP Revista de lepidopterologíaGastroenterology PLoS ONE
Partner nations: United Kingdom Greece Spain

In The Last Decade

George Tzortzis

55 papers receiving 4.6k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Microencapsulation of probiotics for gastrointestinal delivery

2012 532 citations Michael T. Cook, George Tzortzis et al. Journal of Controlled Release profile →

Peers

Countries citing papers authored by George Tzortzis

Since Specialization

Citations

This map shows the geographic impact of George Tzortzis's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by George Tzortzis with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites George Tzortzis more than expected).

Fields of papers citing papers by George Tzortzis

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by George Tzortzis. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by George Tzortzis. The network helps show where George Tzortzis may publish in the future.

Co-authorship network of co-authors of George Tzortzis

This figure shows the co-authorship network connecting the top 25 collaborators of George Tzortzis. A scholar is included among the top collaborators of George Tzortzis based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with George Tzortzis. George Tzortzis is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Impact of Combined Prebiotic Galacto-Oligosaccharides and Bifidobacterium breve-Derived Postbiotic on Gut Microbiota and HbA1c in Prediabetic Adults: A Double-Blind, Randomized, Placebo-Controlled Study 2024 ·Nutrients ·(unknown),Monica Barone,Silvia Turroni,Patrizia Brigidi,George Tzortzis,Jelena Vulevic,(unknown),(unknown),Adele Costabile	12
2	Supplementation with postbiotic from Bifidobacterium Breve BB091109 improves inflammatory status and endocrine function in healthy females: a randomized, double-blind, placebo-controlled, parallel-groups study 2023 ·Frontiers in Microbiology ·(unknown),(unknown),Piril Hepsomali,George Tzortzis,Jelena Vulevic,Adele Costabile	4
3	Cervical Cystic Lymphangioma in an Adult Patient. A Case Report of a Rare Entity 2021 ·SHILAP Revista de lepidopterología ·(unknown),(unknown),(unknown),George Tzortzis	0
4	Effects of Prebiotics vs a Diet Low in FODMAPs in Patients With Functional Gut Disorders 2018 ·Gastroenterology ·(unknown),Marianela Mego,Chaysavanh Manichanh,Nicolau Cañellas,Daniel Cañueto,(unknown),(unknown),Carolina Malagelada,Anna Accarino,Jelena Vulevic,George Tzortzis,Glenn R. Gibson,Esteban Saperas,Francisco Guarner,Fernando Azpiroz	80
5	Metabolic adaptation of colonic microbiota to galactooligosaccharides: a proof‐of‐concept‐study 2017 ·Alimentary Pharmacology & Therapeutics ·Marianela Mego,Chaysavanh Manichanh,Anna Accarino,David Campos,Marta Pozuelo,Encarna Varela,Jelena Vulevic,George Tzortzis,Glenn R. Gibson,Francisco Guarner,Fernando Azpiroz	37
6	Colonic gas homeostasis: Mechanisms of adaptation following HOST‐G904 galactooligosaccharide use in humans 2017 ·Neurogastroenterology & Motility ·Marianela Mego,Anna Accarino,George Tzortzis,Jelena Vulevic,Glenn R. Gibson,Francisco Guarner,Fernando Azpiroz	31
7	Increased cortical neuronal responses to NMDA and improved attentional set-shifting performance in rats following prebiotic (B-GOS®) ingestion 2017 ·European Neuropsychopharmacology ·B. Gronier,Hélène M. Savignac,Mathieu Di Miceli,(unknown),George Tzortzis,Daniel C. Anthony,Philip W. J. Burnet	69
8	Influence of galacto-oligosaccharide mixture (B-GOS) on gut microbiota, immune parameters and metabonomics in elderly persons 2015 ·British Journal Of Nutrition ·Jelena Vulevic,(unknown),Gemma Walton,Sandrine P. Claus,George Tzortzis,(unknown),Glenn R. Gibson	230
9	Effects of Orange Juice Formulation on Prebiotic Functionality Using an In Vitro Colonic Model System 2015 ·PLoS ONE ·Adele Costabile,Gemma Walton,George Tzortzis,Jelena Vulevic,Dimitris Charalampopoulos,Glenn R. Gibson	27
10	Prebiotic intake reduces the waking cortisol response and alters emotional bias in healthy volunteers 2014 ·Psychopharmacology ·Kristin Schmidt,Philip J. Cowen,Catherine J. Harmer,George Tzortzis,Steven P. Errington,Philip W. J. Burnet	377
11	Prebiotic feeding elevates central brain derived neurotrophic factor, N-methyl-d-aspartate receptor subunits and d-serine 2013 ·Neurochemistry International ·Hélène M. Savignac,Giulia Corona,(unknown),Li Chen,Jeremy P. E. Spencer,George Tzortzis,Philip W. J. Burnet	277
12	Microencapsulation of probiotics for gastrointestinal deliverybreakdown → 2012 ·Journal of Controlled Release ·Michael T. Cook,George Tzortzis,Dimitris Charalampopoulos,Vitaliy V. Khutoryanskiy	532
13	Layer-by-layer coating of alginate matrices with chitosan–alginate for the improved survival and targeted delivery of probiotic bacteria after oral administration 2012 ·Journal of Materials Chemistry B ·Michael T. Cook,George Tzortzis,Vitaliy V. Khutoryanskiy,Dimitris Charalampopoulos	108
14	A comprehensive investigation of the synthesis of prebiotic galactooligosaccharides by whole cells of Bifidobacterium bifidum NCIMB 41171 2010 ·Journal of Biotechnology ·Ali Osman,George Tzortzis,Robert A. Rastall,Dimitris Charalampopoulos	40
15	A double-blind, placebo-controlled, randomized human study assessing the capacity of a novel galacto-oligosaccharide mixture in reducing travellers' diarrhoea 2009 ·European Journal of Clinical Nutrition ·Alexandra Drakoularakou,George Tzortzis,Robert A. Rastall,Glenn R. Gibson	101
16	Comparative analysis of four β-galactosidases from Bifidobacterium bifidum NCIMB41171: purification and biochemical characterisation 2008 ·Applied Microbiology and Biotechnology ·Theodoros Goulas,Athanasios Goulas,George Tzortzis,Glenn R. Gibson	45
17	Molecular cloning and comparative analysis of four β-galactosidase genes from Bifidobacterium bifidum NCIMB41171 2007 ·Applied Microbiology and Biotechnology ·Theodoros Goulas,Athanasios Goulas,George Tzortzis,Glenn R. Gibson	39
18	Synthesis of prebiotic galactooligosaccharides using whole cells of a novel strain, Bifidobacterium bifidum NCIMB 41171 2005 ·Applied Microbiology and Biotechnology ·George Tzortzis,Athanasios Goulas,Glenn R. Gibson	106
19	Radiation doses to patients from digital subtraction angiography 2005 ·Radiation Protection Dosimetry ·(unknown),Ioannis A. Tsalafoutas,George Tzortzis,Paris Pappas,(unknown),(unknown),Anastasios Georgiou,(unknown),(unknown)	9
20	In vitro evaluation of the fermentation properties of galactooligosaccharides synthesised by a-galactosidase from Lactobacillus reuteri 2004 ·Applied Microbiology and Biotechnology ·George Tzortzis,Athanasios Goulas,(unknown),Glenn R. Gibson,Robert A. Rastall	46

About George Tzortzis

George Tzortzis is a scholar working on Gastroenterology, Biological Psychiatry and Nutrition and Dietetics, having authored 58 papers that have together received 4.8k indexed citations. Recurring topics across this work include Gut microbiota and health (17 papers), Probiotics and Fermented Foods (16 papers) and Microbial Metabolites in Food Biotechnology (16 papers). The work is most often cited by research in Biological Psychiatry (524 citations), Gastroenterology (674 citations) and Nutrition and Dietetics (1.6k citations). George Tzortzis has collaborated with scholars based in United Kingdom, Greece and Spain. Frequent co-authors include Glenn R. Gibson, Jelena Vulevic, Dimitris Charalampopoulos, Michael T. Cook, Vitaliy V. Khutoryanskiy, Athanasios Goulas, Philip W. J. Burnet, Alexandra Drakoularakou, Hélène M. Savignac and D. B. A. Silk. Their work appears in journals such as SHILAP Revista de lepidopterología, Gastroenterology and PLoS ONE.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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