Klaus Dragull

621 total citations
15 papers, 481 citations indexed

About

Klaus Dragull is a scholar working on Pharmacology, Complementary and alternative medicine and Molecular Biology. According to data from OpenAlex, Klaus Dragull has authored 15 papers receiving a total of 481 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Pharmacology, 6 papers in Complementary and alternative medicine and 5 papers in Molecular Biology. Recurrent topics in Klaus Dragull's work include Medicinal Plant Extracts Effects (6 papers), Alkaloids: synthesis and pharmacology (5 papers) and Phytochemistry and Biological Activities (4 papers). Klaus Dragull is often cited by papers focused on Medicinal Plant Extracts Effects (6 papers), Alkaloids: synthesis and pharmacology (5 papers) and Phytochemistry and Biological Activities (4 papers). Klaus Dragull collaborates with scholars based in United States, Czechia and North Macedonia. Klaus Dragull's co-authors include C. S. Tang, Chung-Shih Tang, Qing X. Li, Judith R. Denery, Andrew P. Breksa, Wesley Y. Yoshida, Brian Cain, John J. Beck, Jimmy T. Efird and Laura K. Schnackenberg and has published in prestigious journals such as Journal of Agricultural and Food Chemistry, Food Chemistry and Analytica Chimica Acta.

In The Last Decade

Klaus Dragull

15 papers receiving 451 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Klaus Dragull United States	10	192	122	113	107	79	15	481
Vladimir Čanadanović Serbia	9	47 0.2×	156 1.3×	35 0.3×	78 0.7×	18 0.2×	25	558
Bahman Eslami Iran	10	62 0.3×	328 2.7×	83 0.7×	139 1.3×	26 0.3×	18	605
V. Suba India	14	184 1.0×	288 2.4×	141 1.2×	116 1.1×	5 0.1×	31	655
Qunyi Zheng United States	10	187 1.0×	425 3.5×	74 0.7×	210 2.0×	8 0.1×	13	749
S M Nabavi Iran	10	85 0.4×	313 2.6×	88 0.8×	157 1.5×	5 0.1×	17	589
Biljana Kaurinović Serbia	11	94 0.5×	224 1.8×	85 0.8×	130 1.2×	5 0.1×	21	558
Lihua Gu China	8	95 0.5×	100 0.8×	54 0.5×	172 1.6×	5 0.1×	22	338
Rabie Kamal Morocco	11	33 0.2×	124 1.0×	37 0.3×	104 1.0×	14 0.2×	15	421
Erich Grundel United States	14	49 0.3×	82 0.7×	62 0.5×	188 1.8×	3 0.0×	31	565
Ja‐Yong Cho South Korea	12	36 0.2×	265 2.2×	43 0.4×	137 1.3×	9 0.1×	37	578

Countries citing papers authored by Klaus Dragull

Since Specialization

Citations

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

Fields of papers citing papers by Klaus Dragull

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Klaus Dragull. 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 Klaus Dragull. The network helps show where Klaus Dragull may publish in the future.

Co-authorship network of co-authors of Klaus Dragull

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

All Works

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15 of 15 papers shown

Béreš, Tibor, Klaus Dragull, Jiří Pospíšil, et al.. (2017). Quantitative Analysis of Ingenol in Euphorbia species via Validated Isotope Dilution Ultra‐high Performance Liquid Chromatography Tandem Mass Spectrometry. Phytochemical Analysis. 29(1). 23–29. 8 indexed citations

Dragull, Klaus, Jiří Pospíšil, Danuše Tarkowská, et al.. (2015). Analysis of ingenol and its conjugates in some species of the Euphorbia genus by ultra-high performance liquid chromatography-tandem mass spectrometry using isotope dilution method. Planta Medica. 81(16). 1 indexed citations

Dragull, Klaus & John J. Beck. (2012). Isolation of Natural Products by Ion-Exchange Methods. Methods in molecular biology. 864. 189–219. 6 indexed citations

Beck, John J., Bradley S. Higbee, Wai S. Gee, & Klaus Dragull. (2011). Ambient orchard volatiles from California almonds. Phytochemistry Letters. 4(2). 199–202. 18 indexed citations

Dragull, Klaus, John J. Beck, & Glory B. Merrill. (2010). Essential oil yield and composition of Pistacia vera ‘Kerman’ fruits, peduncles and leaves grown in California. Journal of the Science of Food and Agriculture. 90(4). 664–668. 16 indexed citations

Breksa, Andrew P. & Klaus Dragull. (2008). Development and validation of a decigram-scale method for the separation of limonin from limonin glucoside by C-18 flash chromatography. Food Chemistry. 113(4). 1308–1313. 8 indexed citations

Naumov, Pancě, Klaus Dragull, Masahiro Yoshioka, Chung-Shih Tang, & Seik Weng Ng. (2008). Structural Characterization of Genuine (-)-Pipermethystine, (-)-Epoxypipermethystine, (+)-Dihydromethysticin and Yangonin from the Kava Plant (Piper methysticum). Natural Product Communications. 3(8). 3 indexed citations

Dragull, Klaus, Andrew P. Breksa, & Brian Cain. (2008). Synephrine Content of Juice from Satsuma Mandarins (Citrus unshiu Marcovitch). Journal of Agricultural and Food Chemistry. 56(19). 8874–8878. 48 indexed citations

Breksa, Andrew P., Klaus Dragull, & Rosalind Y. Wong. (2008). Isolation and Identification of the First C-17 Limonin Epimer, Epilimonin. Journal of Agricultural and Food Chemistry. 56(14). 5595–5598. 24 indexed citations

10.

Dragull, Klaus, et al.. (2007). Effects of Kava Alkaloid, Pipermethystine, and Kavalactones on Oxidative Stress and Cytochrome P450 in F-344 Rats. Toxicological Sciences. 97(1). 214–221. 47 indexed citations

11.

Brown, Amy C., Janet Onopa, Peter Holck, et al.. (2007). Traditional kava beverage consumption and liver function tests in a predominantly Tongan population in Hawaii. Clinical Toxicology. 45(5). 549–556. 37 indexed citations

12.

Jhoo, Jin‐Woo, C.Y.W. ANG, Thomas M. Heinze, et al.. (2007). Identification of C ‐glycoside Flavonoids as Potential Mutagenic Compounds in Kava. Journal of Food Science. 72(2). C120–5. 15 indexed citations

13.

Jhoo, Jin‐Woo, James P. Freeman, Thomas M. Heinze, et al.. (2006). In Vitro Cytotoxicity of Nonpolar Constituents from Different Parts of Kava Plant (Piper methysticum). Journal of Agricultural and Food Chemistry. 54(8). 3157–3162. 55 indexed citations

14.

Dragull, Klaus, Wesley Y. Yoshida, & Chung-Shih Tang. (2003). Piperidine alkaloids from Piper methysticum. Phytochemistry. 63(2). 193–198. 79 indexed citations

15.

Denery, Judith R., Klaus Dragull, C. S. Tang, & Qing X. Li. (2003). Pressurized fluid extraction of carotenoids from Haematococcus pluvialis and Dunaliella salina and kavalactones from Piper methysticum. Analytica Chimica Acta. 501(2). 175–181. 116 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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