Karen E. Hagen

578 total citations
8 papers, 465 citations indexed

About

Karen E. Hagen is a scholar working on Food Science, Molecular Biology and Infectious Diseases. According to data from OpenAlex, Karen E. Hagen has authored 8 papers receiving a total of 465 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Food Science, 4 papers in Molecular Biology and 2 papers in Infectious Diseases. Recurrent topics in Karen E. Hagen's work include Probiotics and Fermented Foods (8 papers), Animal Nutrition and Physiology (2 papers) and Bacteriophages and microbial interactions (2 papers). Karen E. Hagen is often cited by papers focused on Probiotics and Fermented Foods (8 papers), Animal Nutrition and Physiology (2 papers) and Bacteriophages and microbial interactions (2 papers). Karen E. Hagen collaborates with scholars based in Canada, New Zealand and United States. Karen E. Hagen's co-authors include Thomas A. Tompkins, Philip M. Sherman, Kathene C. Johnson‐Henry, D.R. Korver, Gwen E. Allison, Le Luo Guan, Gerald W. Tannock, G.M. Fasenko, Ilse Cleenwerck and Jean Swings and has published in prestigious journals such as Applied and Environmental Microbiology, INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY and Cellular Microbiology.

In The Last Decade

Karen E. Hagen

8 papers receiving 425 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Karen E. Hagen Canada 7 313 287 122 64 63 8 465
Domitille Fayol-Messaoudi France 5 374 1.2× 286 1.0× 127 1.0× 75 1.2× 64 1.0× 7 489
Martin Antonsson Sweden 11 307 1.0× 306 1.1× 137 1.1× 35 0.5× 37 0.6× 13 475
Liesbeth Masco Belgium 8 491 1.6× 439 1.5× 207 1.7× 71 1.1× 34 0.5× 8 668
P. Chagnaud France 11 303 1.0× 236 0.8× 129 1.1× 68 1.1× 68 1.1× 17 456
Winschau F. van Zyl South Africa 9 240 0.8× 279 1.0× 84 0.7× 54 0.8× 27 0.4× 10 418
Elisabeth Neumann Brazil 14 383 1.2× 287 1.0× 135 1.1× 92 1.4× 57 0.9× 20 566
Luana Martins Perin Brazil 14 505 1.6× 285 1.0× 121 1.0× 44 0.7× 69 1.1× 23 578
Seung-Min Yang South Korea 13 303 1.0× 314 1.1× 64 0.5× 42 0.7× 31 0.5× 52 532
Esther Bataller Spain 10 191 0.6× 190 0.7× 88 0.7× 88 1.4× 31 0.5× 16 426
Viviana Suárez Argentina 13 563 1.8× 367 1.3× 242 2.0× 52 0.8× 57 0.9× 21 696

Countries citing papers authored by Karen E. Hagen

Since Specialization
Citations

This map shows the geographic impact of Karen E. Hagen'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 Karen E. Hagen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Karen E. Hagen more than expected).

Fields of papers citing papers by Karen E. Hagen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Karen E. Hagen. 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 Karen E. Hagen. The network helps show where Karen E. Hagen may publish in the future.

Co-authorship network of co-authors of Karen E. Hagen

This figure shows the co-authorship network connecting the top 25 collaborators of Karen E. Hagen. A scholar is included among the top collaborators of Karen E. Hagen 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 Karen E. Hagen. Karen E. Hagen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

8 of 8 papers shown
1.
Hagen, Karen E., et al.. (2010). Sequence analysis of plasmid pIR52-1 from Lactobacillus helveticus R0052 and investigation of its origin of replication. Plasmid. 63(2). 108–117. 16 indexed citations
2.
Broadbent, Jeffery R., Roger Thompson, Joanne E. Hughes, et al.. (2008). Comparative genome analysis ofthe obligately homofermentative lactic acid bacterium Lactobacillus helveticus. 7 indexed citations
3.
Tompkins, Thomas A., et al.. (2008). Safety evaluation of two bacterial strains used in asian probiotic products. Canadian Journal of Microbiology. 54(5). 391–400. 38 indexed citations
4.
Naser, Sabri M., Karen E. Hagen, Marc Vancanneyt, et al.. (2006). Lactobacillus suntoryeus Cachat and Priest 2005 is a later synonym of Lactobacillus helveticus (Orla-Jensen 1919) Bergey et al. 1925 (Approved Lists 1980). INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY. 56(2). 355–360. 50 indexed citations
5.
Johnson‐Henry, Kathene C., et al.. (2006). Surface-layer protein extracts from Lactobacillus helveticus inhibit enterohaemorrhagic Escherichia coli O157:H7 adhesion to epithelial cells. Cellular Microbiology. 9(2). 356–367. 214 indexed citations
6.
Guan, Le Luo, Karen E. Hagen, G. W. Tannock, et al.. (2005). Detection of Lactobacillus acidophilus species in the gut of chickens.. Current Neuropharmacology. 14(5). 96–99. 1 indexed citations
7.
Hagen, Karen E., Le Luo Guan, Gerald W. Tannock, D.R. Korver, & Gwen E. Allison. (2005). Detection, Characterization, and In Vitro and In Vivo Expression of Genes Encoding S-Proteins in Lactobacillus gallinarum Strains Isolated from Chicken Crops. Applied and Environmental Microbiology. 71(11). 6633–6643. 33 indexed citations
8.
Guan, Le Luo, Karen E. Hagen, Gerald W. Tannock, et al.. (2003). Detection and Identification of Lactobacillus Species in Crops of Broilers of Different Ages by Using PCR-Denaturing Gradient Gel Electrophoresis and Amplified Ribosomal DNA Restriction Analysis. Applied and Environmental Microbiology. 69(11). 6750–6757. 106 indexed citations

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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