Frederick Khachik

6.3k total citations
55 papers, 4.6k citations indexed

About

Frederick Khachik is a scholar working on Biochemistry, Molecular Biology and Organic Chemistry. According to data from OpenAlex, Frederick Khachik has authored 55 papers receiving a total of 4.6k indexed citations (citations by other indexed papers that have themselves been cited), including 38 papers in Biochemistry, 23 papers in Molecular Biology and 8 papers in Organic Chemistry. Recurrent topics in Frederick Khachik's work include Antioxidant Activity and Oxidative Stress (38 papers), Retinoids in leukemia and cellular processes (16 papers) and Plant biochemistry and biosynthesis (7 papers). Frederick Khachik is often cited by papers focused on Antioxidant Activity and Oxidative Stress (38 papers), Retinoids in leukemia and cellular processes (16 papers) and Plant biochemistry and biosynthesis (7 papers). Frederick Khachik collaborates with scholars based in United States, Switzerland and Türkiye. Frederick Khachik's co-authors include Gary R. Beecher, Paul S. Bernstein, William R. Lusby, James C. Smith, Mudlagiri B. Goli, Donita Garland, Noel F. Whittaker, Hanspeter Pfander, Andrea Steck and Julia Humphries and has published in prestigious journals such as Journal of the American Chemical Society, Analytical Chemistry and American Journal of Clinical Nutrition.

In The Last Decade

Frederick Khachik

55 papers receiving 4.3k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Frederick Khachik United States	32	3.5k	2.0k	763	651	508	55	4.6k
Earl H. Harrison United States	43	2.8k 0.8×	3.1k 1.6×	366 0.5×	866 1.3×	240 0.5×	109	5.1k
Akihiko Nagao Japan	38	2.3k 0.6×	1.8k 0.9×	650 0.9×	784 1.2×	65 0.1×	97	4.9k
I. Blanco Spain	20	1.5k 0.4×	730 0.4×	210 0.3×	497 0.8×	146 0.3×	38	2.1k
Adrian Wyss United States	25	1.5k 0.4×	1.6k 0.8×	168 0.2×	428 0.7×	71 0.1×	32	3.0k
James Allen Olson United States	29	1.4k 0.4×	1.6k 0.8×	208 0.3×	586 0.9×	98 0.2×	70	2.7k
Hanspeter Pfander Switzerland	21	1.3k 0.4×	1.2k 0.6×	548 0.7×	211 0.3×	33 0.1×	84	2.6k
Prakash Bhosale United States	25	1.1k 0.3×	1.0k 0.5×	76 0.1×	153 0.2×	368 0.7×	35	2.0k
Hiroshi Shimoda Japan	32	546 0.2×	901 0.5×	393 0.5×	319 0.5×	47 0.1×	102	3.2k
Ángel Catalá Argentina	25	438 0.1×	1.3k 0.7×	272 0.4×	616 0.9×	78 0.2×	93	3.0k
Alan Mortensen United Kingdom	18	954 0.3×	477 0.2×	478 0.6×	240 0.4×	24 0.0×	21	1.8k

Countries citing papers authored by Frederick Khachik

Since Specialization

Citations

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

Fields of papers citing papers by Frederick Khachik

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Frederick Khachik

This figure shows the co-authorship network connecting the top 25 collaborators of Frederick Khachik. A scholar is included among the top collaborators of Frederick Khachik 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 Frederick Khachik. Frederick Khachik 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

Khachik, Frederick. (2018). Transformation of naturally occurring (3R,3′R,6′R)-lutein and its fatty acid esters to (3 R)-β-cryptoxanthin and (3R,6′R)-α-cryptoxanthin. Archives of Biochemistry and Biophysics. 653. 107–112. 1 indexed citations

Şahin, Kazım, et al.. (2007). Dietary Tomato Powder Supplementation in the Prevention of Leiomyoma of the Oviduct in the Japanese Quail. Nutrition and Cancer. 59(1). 70–75. 17 indexed citations

Rosenthal, Julie, Jonghyeon Kim, Darby J. S. Thompson, et al.. (2006). Dose-Ranging Study of Lutein Supplementation in Persons Aged 60 Years or Older. Investigative Ophthalmology & Visual Science. 47(12). 5227–5227. 51 indexed citations

Şahin, Kazım, Muhittin Önderci, Nurhan Şahin, et al.. (2004). Lycopene Supplementation Prevents the Development of Spontaneous Smooth Muscle Tumors of the Oviduct in Japanese Quail. Nutrition and Cancer. 50(2). 181–189. 35 indexed citations

Mitchell, Geraldine V., et al.. (2003). Lutein Interacts with Ascorbic Acid More Frequently than with α-Tocopherol to Alter Biomarkers of Oxidative Stress in Female Zucker Obese Rats. Journal of Nutrition. 133(9). 2838–2844. 21 indexed citations

Khachik, Frederick, et al.. (2002). Transformations of selected carotenoids in plasma, liver, and ocular tissues of humans and in nonprimate animal models.. PubMed. 43(11). 3383–92. 165 indexed citations

Bernstein, Paul S., et al.. (2001). Identification and Quantitation of Carotenoids and their Metabolites in the Tissues of the Human Eye. Experimental Eye Research. 72(3). 215–223. 284 indexed citations

Nishino, Hoyoku, Harukuni Tokuda, Michiaki Murakoshi, et al.. (2000). Cancer prevention by natural carotenoids. BioFactors. 13(1-4). 89–94. 117 indexed citations

Cohen, Leonard A., Zhonglin Zhao, Brian Pittman, & Frederick Khachik. (1999). Effect of Dietary Lycopene on N-Methylnitrosourea-Induced Mammary Tumorigenesis. Nutrition and Cancer. 34(2). 153–159. 18 indexed citations

10.

Paetau, Inke, et al.. (1998). Chronic ingestion of lycopene-rich tomato juice or lycopene supplements significantly increases plasma concentrations of lycopene and related tomato carotenoids in humans. American Journal of Clinical Nutrition. 68(6). 1187–1195. 125 indexed citations

11.

Khachik, Frederick, Andrea Steck, U. Niggli, & Hanspeter Pfander. (1998). Partial Synthesis and Structural Elucidation of the Oxidative Metabolites of Lycopene Identified in Tomato Paste, Tomato Juice, and Human Serum. Journal of Agricultural and Food Chemistry. 46(12). 4874–4884. 37 indexed citations

12.

Khachik, Frederick, et al.. (1997). Identification, Quantification, and Relative Concentrations of Carotenoids and Their Metabolites in Human Milk and Serum. Analytical Chemistry. 69(10). 1873–1881. 396 indexed citations

13.

Khachik, Frederick, Gerhard Englert, Gary R. Beecher, & J. Cecil Smith. (1995). Isolation, structural elucidation, and partial synthesis of lutein dehydration products in extracts from human plasma. Journal of Chromatography B Biomedical Sciences and Applications. 670(2). 219–233. 39 indexed citations

14.

Khachik, Frederick, Gary R. Beecher, & James C. Smith. (1995). Lutein, lycopene, and their oxidative metabolites in chemoprevention of cancer. Journal of Cellular Biochemistry. 59(S22). 236–246. 239 indexed citations

15.

Khachik, Frederick, Gary R. Beecher, Mudlagiri B. Goli, William R. Lusby, & Charles E. Daitch. (1992). [18] Separation and quantification of carotenoids in human plasma. Methods in enzymology on CD-ROM/Methods in enzymology. 213. 205–219. 49 indexed citations

16.

Khachik, Frederick, Gary R. Beecher, Mudlagiri B. Goli, William R. Lusby, & James C. Smith. (1992). Separation and identification of carotenoids and their oxidation products in the extracts of human plasma. Analytical Chemistry. 64(18). 2111–2122. 215 indexed citations

17.

Khachik, Frederick, et al.. (1992). Isolation and structural elucidation of the geometrical isomers of lutein and zeaxanthin in extracts from human plasma. Journal of Chromatography B Biomedical Sciences and Applications. 582(1-2). 153–166. 61 indexed citations

18.

Beecher, Gary R. & Frederick Khachik. (1992). Qualitative Relationship of Dietary and Plasma Carotenoids in Human Beings. Annals of the New York Academy of Sciences. 669(1). 320–321. 13 indexed citations

19.

Houk, K. N., et al.. (1990). Cycloadditions of hexachlorocyclopentadiene to 7-substituted norbornadienes: remote substituent effects on reacfivity and stereoselectivity. Tetrahedron Letters. 31(50). 7285–7288. 7 indexed citations

20.

Khachik, Frederick & Gary R. Beecher. (1988). Separation of carotenol fatty acid esters by high-performance liquid chromatography. Journal of Chromatography A. 449(1). 119–133. 23 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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