Kjell M. Vårum

11.8k total citations · 1 hit paper
99 papers, 9.7k citations indexed

About

Kjell M. Vårum is a scholar working on Molecular Biology, Biomaterials and Food Science. According to data from OpenAlex, Kjell M. Vårum has authored 99 papers receiving a total of 9.7k indexed citations (citations by other indexed papers that have themselves been cited), including 50 papers in Molecular Biology, 34 papers in Biomaterials and 18 papers in Food Science. Recurrent topics in Kjell M. Vårum's work include Nanocomposite Films for Food Packaging (28 papers), Studies on Chitinases and Chitosanases (26 papers) and Enzyme Production and Characterization (17 papers). Kjell M. Vårum is often cited by papers focused on Nanocomposite Films for Food Packaging (28 papers), Studies on Chitinases and Chitosanases (26 papers) and Enzyme Production and Characterization (17 papers). Kjell M. Vårum collaborates with scholars based in Norway, Sweden and Japan. Kjell M. Vårum's co-authors include Olav Smidsrød, Per Artursson, Vincent G. H. Eijsink, Sabina P. Strand, Aslak Einbu, Nicolaas Schipper, Morten Sørlie, Alain Domard, Svein Jarle Horn and Hans Grasdalen and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and PLoS ONE.

In The Last Decade

Kjell M. Vårum

99 papers receiving 9.4k 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.

Chitosans as Absorption Enhancers for Poorly Absorbable Drugs 2: Mechanism of Absorption Enhancement

1997 478 citations Nicolaas Schipper, Kjell M. Vårum et al. Pharmaceutical Research profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Kjell M. Vårum Norway	55	4.1k	3.8k	1.6k	1.4k	1.3k	99	9.7k
Gudmund Skjåk‐Bræk Norway	55	2.2k 0.5×	2.2k 0.6×	882 0.6×	1.1k 0.8×	2.6k 2.0×	144	10.9k
Alain Domard France	57	2.0k 0.5×	5.2k 1.4×	1.1k 0.7×	902 0.6×	1.7k 1.3×	132	9.9k
Riccardo A.A. Müzzarelli Italy	61	2.9k 0.7×	8.6k 2.3×	2.2k 1.4×	1.2k 0.8×	3.0k 2.3×	161	16.2k
Zhiguo Su China	53	4.7k 1.1×	1.8k 0.5×	1.4k 0.9×	366 0.3×	2.5k 1.9×	409	11.1k
Yumin Du China	68	1.9k 0.5×	7.4k 2.0×	1.7k 1.1×	1.3k 1.0×	3.0k 2.3×	236	14.3k
Seiichi Tokura Japan	48	1.9k 0.5×	4.2k 1.1×	930 0.6×	557 0.4×	1.4k 1.0×	170	8.5k
Ronald J. Neufeld Canada	54	2.0k 0.5×	1.9k 0.5×	1.8k 1.2×	432 0.3×	1.8k 1.3×	138	7.9k
Shin‐Ichiro Nishimura Japan	62	8.7k 2.1×	2.4k 0.6×	493 0.3×	927 0.7×	1.3k 1.0×	451	16.8k
Pengcheng Li China	55	2.3k 0.6×	2.8k 0.7×	439 0.3×	2.0k 1.5×	865 0.7×	261	9.3k
Francisco M. Goycoolea United Kingdom	48	1.8k 0.4×	2.6k 0.7×	1.4k 0.9×	1.4k 1.0×	950 0.7×	188	8.6k

Countries citing papers authored by Kjell M. Vårum

Since Specialization

Citations

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

Fields of papers citing papers by Kjell M. Vårum

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kjell M. Vårum. 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 Kjell M. Vårum. The network helps show where Kjell M. Vårum may publish in the future.

Co-authorship network of co-authors of Kjell M. Vårum

This figure shows the co-authorship network connecting the top 25 collaborators of Kjell M. Vårum. A scholar is included among the top collaborators of Kjell M. Vårum 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 Kjell M. Vårum. Kjell M. Vårum 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

Berini, Francesca, Fabrizio Beltrametti, Kjell M. Vårum, et al.. (2017). Production and characterization of a novel antifungal chitinase identified by functional screening of a suppressive-soil metagenome. Microbial Cell Factories. 16(1). 16–16. 40 indexed citations

Luck, P.J., Kjell M. Vårum, & E. Allen Foegeding. (2015). Charge related astringency of chitosans. Food Hydrocolloids. 48. 174–178. 18 indexed citations

Malmo, Jostein, Axel Sandvig, Kjell M. Vårum, & Sabina P. Strand. (2013). Nanoparticle Mediated P-Glycoprotein Silencing for Improved Drug Delivery across the Blood-Brain Barrier: A siRNA-Chitosan Approach. PLoS ONE. 8(1). e54182–e54182. 61 indexed citations

Horn, Svein Jarle, Morten Sørlie, Kjell M. Vårum, Priit Väljamäe, & Vincent G. H. Eijsink. (2012). Measuring Processivity. Methods in enzymology on CD-ROM/Methods in enzymology. 510. 69–95. 76 indexed citations

Ohnuma, Takayuki, et al.. (2011). Crystal structure and mode of action of a class V chitinase from Nicotiana tabacum. Plant Molecular Biology. 75(3). 291–304. 38 indexed citations

Heggset, Ellinor B., Ingunn Alne Hoell, Anne Line Norberg, et al.. (2010). Degradation of Chitosans with a Family 46 Chitosanase from Streptomyces coelicolor A3(2). Biomacromolecules. 11(9). 2487–2497. 61 indexed citations

Heggset, Ellinor B., et al.. (2009). Degradation of Chitosans with Chitinase G from Streptomyces coelicolor A3(2): Production of Chito-oligosaccharides and Insight into Subsite Specificities. Biomacromolecules. 10(4). 892–899. 45 indexed citations

Strand, Sabina P., Sylvie Lélu, Nina Kristine Reitan, et al.. (2009). Molecular design of chitosan gene delivery systems with an optimized balance between polyplex stability and polyplex unpacking. Biomaterials. 31(5). 975–987. 144 indexed citations

Eijsink, Vincent G. H., Gustav Vaaje‐Kolstad, Kjell M. Vårum, & Svein Jarle Horn. (2008). Towards new enzymes for biofuels: lessons from chitinase research. Trends in biotechnology. 26(5). 228–235. 126 indexed citations

10.

Kawamura, Shunsuke, et al.. (2008). The Role of Arg114 at Subsites E and F in Reactions Catalyzed by Hen Egg-White Lysozyme. Bioscience Biotechnology and Biochemistry. 72(3). 823–832. 7 indexed citations

11.

Horn, Svein Jarle, Pawel Sikorski, Gustav Vaaje‐Kolstad, et al.. (2006). Costs and benefits of processivity in enzymatic degradation of recalcitrant polysaccharides. Proceedings of the National Academy of Sciences. 103(48). 18089–18094. 232 indexed citations

12.

Dale, Ola, Turid Nilsen, Kåre E. Tvedt, et al.. (2006). Transepithelial transport of morphine and mannitol in Caco-2 cells: the influence of chitosans of different molecular weights and degrees of acetylation. Journal of Pharmacy and Pharmacology. 58(7). 909–915. 14 indexed citations

13.

Psylinakis, Emmanuel, Ivo G. Boneca, Konstantinos Mavromatis, et al.. (2005). Peptidoglycan N-Acetylglucosamine Deacetylases from Bacillus cereus, Highly Conserved Proteins in Bacillus anthracis. Journal of Biological Chemistry. 280(35). 30856–30863. 69 indexed citations

14.

Tømmeraas, Kristoffer, Kjell M. Vårum, Bjørn E. Christensen, & Olav Smidsrød. (2001). Preparation and characterisation of oligosaccharides produced by nitrous acid depolymerisation of chitosans. Carbohydrate Research. 333(2). 137–144. 147 indexed citations

15.

Fukamizo, Tamo, et al.. (2001). Binding of a Highly De-N-acetylated Chitosan to Japanese Pheasan Lysozyme as Measured by¹H-NMR Spectroscopy. Bioscience Biotechnology and Biochemistry. 65(8). 1766–1773. 3 indexed citations

16.

Strand, Sabina P., Kristoffer Tømmeraas, Kjell M. Vårum, & Kjetill Østgaard. (2001). Electrophoretic Light Scattering Studies of Chitosans with Different Degrees of N-acetylation. Biomacromolecules. 2(4). 1310–1314. 111 indexed citations

17.

Vårum, Kjell M., et al.. (1997). In vitro degradation rates of partially N-acetylated chitosans in human serum. Carbohydrate Research. 299(1-2). 99–101. 245 indexed citations

18.

Vårum, Kjell M., et al.. (1996). Determination of enzymatic hydrolysis specificity of partially N-acetylated chitosans. Biochimica et Biophysica Acta (BBA) - General Subjects. 1291(1). 5–15. 113 indexed citations

19.

Schipper, Nicolaas, Kjell M. Vårum, & Per Artursson. (1996). Chitosans as Absorption Enhancers for Poorly Absorbable Drugs. 1: Influence of Molecular Weight and Degree of Acetylation on Drug Transport Across Human Intestinal Epithelial (Caco-2) Cells. Pharmaceutical Research. 13(11). 1686–1692. 311 indexed citations

20.

Otterlei, Marit, Kjell M. Vårum, Lawrence M. Ryan, & Terje Espevik. (1994). Characterization of binding and TNF-α-inducing ability of chitosans on monocytes: the involvement of CD14. Vaccine. 12(9). 825–832. 84 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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