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Displaying 1 - 4 of 4

NIST Micronutrients Measurement Quality Assurance Program: Performance History of the Fat-Soluble Vitamin-Related Studies

September 21, 2022
Author(s)
David L. Duewer, Jeanice "Brown Thomas ", Margaret Kline, Willie May, Katherine E. Sharpless
… to 58 in 1997 and then declined in stages to 29 by 2017. A total of 138 academic, commercial, governmental, or … one RR; two laboratories participated in 77 of the 79 RRs. A total of 350 human serum or plasma samples were distributed … total zeaxanthin, total lutein plus zeaxanthin, and coenzyme Q10. In addition to documenting the number and …

Challenges in Capturing Oxygenase Activity In Vitro

November 1, 1999
Author(s)
V L. Vilker, Vytautas Reipa, M P. Mayhew, Marcia J. Holden
… regio- and/or stereospecific products. These enzymes are a subset of the large class of oxidoreductase enzymes (from … redox enzyme biocatalysis for commercial-scale synthesies. Coenzyme recycling and electrochemical redox cycling as … is discussed as an example of direct charge transfer to a redox protein. We also show that site-directed mutagenesis …

Preparation and Value Assignment of Standard Reference Material 968e Fat-Soluble Vitamins, Carotenoids, and Cholesterol in Human Serum

January 2, 2012
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Lane C. Sander, Katherine E. Sharpless, Lorna T. Sniegoski, Michael J. Welch, James H. Yen, Mugenya O. Isaac
… total lycopene, total α-carotene, trans-β-carotene, and coenzyme Q10. The certified values for the fat-soluble … retinol, tocopherols, carotenoids, and cholesterol in a human serum matrix. This SRM is used extensively by …
Displaying 1 - 4 of 4
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