Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Alexander J. Krynitsky"'
Autor:
Jon W. Wong, Kai Zhang, Douglas G. Hayward, Alexander J. Krynitsky, Frank J. Schenck, James B. Wittenberg, Jian Wang, Paul Yang
Publikováno v:
Analysis of Pesticides in Food and Environmental Samples ISBN: 9781351047081
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c9fee380300690b7b706366670e471a
https://doi.org/10.1201/9781351047081-6
https://doi.org/10.1201/9781351047081-6
Publikováno v:
Journal of Chromatography A. 1446:134-140
A rapid and sensitive gas chromatography with tandem mass spectrometry (GC-MS/MS) method has been developed and validated to quantitatively determine cosmetic ingredients, such as toluene, N-methylpyrrolidone, 2,4-dihydroxybenzophenone (benzophenone-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da85d39f23168a626780a635d79688eb
https://doi.org/10.1016/j.chroma.2016.04.003
https://doi.org/10.1016/j.chroma.2016.04.003
Publikováno v:
Journal of Agricultural and Food Chemistry. 67:12611-12612
Introduction to Symposium issue of the 55th North American Chemical Residue Workshop of Journal of Agricultural and Food Chemistry.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3e58f17a7b721bba74f348ec2e3b4fc
https://doi.org/10.1021/acs.jafc.9b05074
https://doi.org/10.1021/acs.jafc.9b05074
Autor:
Diego Rua, Perry G. Wang, Benjamin J. Canas, Alexander J. Krynitsky, James B. Wittenberg, Wanlong Zhou
Publikováno v:
Journal of Separation Science. 38:2983-2988
Isothiazolinone biocides are broad-spectrum preservatives that are widely used in cosmetics, household, and industrial products. An increase in the number of cases of allergic contact dermatitis to isothiazolinone preservatives, namely, methylisothia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b45c409719ca3480fe2a589e70e798e6
https://doi.org/10.1002/jssc.201500365
https://doi.org/10.1002/jssc.201500365
Autor:
Alexander J. Krynitsky, Clark D. Ridge, Eugene P. Mazzola, Takashi Masaoka, Jennifer A. Wilson, John A. Beutler, Erich Grundel, Jun Ma, Rahul S. Pawar, Stuart F.J. Le Grice
Publikováno v:
J Nat Prod
Two new sesquiterpenoid tropolone glycosides, liriosmasides A (1) and B (2), along with two known compounds, secoxyloganin and oplopanpheside C, were isolated from a methanol extract of the roots of Liriosma ovata. The structures of 1 and 2 were eluc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71b2d634abcb473080b6a285c7802a0d
https://doi.org/10.1021/np5006696
https://doi.org/10.1021/np5006696
Publikováno v:
Journal of Agricultural and Food Chemistry. 62:8935-8943
We developed a stable isotope dilution assay with liquid chromatography tandem mass spectrometry (LC-MS/MS) to determine multiple mycotoxins in baby foods and animal feeds. Samples were fortified with [(13)C]-uniformly labeled mycotoxins as internal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cda56c90c5e0963753dccc399c4e17b6
https://doi.org/10.1021/jf503943r
https://doi.org/10.1021/jf503943r
Publikováno v:
Journal of AOAC International. 99(4)
The presence of mycotoxins (such as aflatoxins, deoxynivalenol, fumonisins, and patulin) is routinely monitored by the U.S. Food and Drug Administration (FDA) to ensure that their concentrations in food are below the levels requiring regulatory actio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2df1225863af5d4021bcf00d75f3f253
https://pubmed.ncbi.nlm.nih.gov/27330044
https://pubmed.ncbi.nlm.nih.gov/27330044
Publikováno v:
Journal of AOAC INTERNATIONAL. 95:1588-1596
Simultaneous separation of steviol and steviol glycosides is challenging because of differences in their polarity and chemical structure. In this study, simultaneous analysis of steviol and steviol glycosides was achieved by LC with UV detection usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e2dbd3fab0a31967024cfa29f010f43
https://doi.org/10.5740/jaoacint.11-435
https://doi.org/10.5740/jaoacint.11-435
Autor:
Alexander J. Krynitsky, Jeanne I. Rader, Erich Grundel, Rahul S. Pawar, Hemlata Tamta, Wayne G. Wamer
Publikováno v:
Xenobiotica. 42:1038-1048
1. Toxicity of pyrrolizidine alkaloids (PAs) largely depends on their metabolic activation by hepatic enzymes, including cytochrome P450s, to become chemically reactive pyrrolic derivatives. These then spontaneously release the esterifying acids to g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e26eb6e21ace7d99c8fbdb850e47cc4
https://doi.org/10.3109/00498254.2012.679978
https://doi.org/10.3109/00498254.2012.679978
Autor:
Roger Simonds, Nathaniel S. Lee, Douglas G. Hayward, Lillian Jao, Katherine Tech, Michael Smoker, Soma Dasgupta, Paul Yang, Kai Zhang, André Schreiber, Alexander J. Krynitsky, Kaushik Banerjee, Alex L. DiBenedetto, Carolyn M. Makovi, Jon W. Wong
Publikováno v:
Journal of Agricultural and Food Chemistry. 59:7636-7646
A multiresidue method analyzing 209 pesticides in 24 agricultural commodities has been developed and validated using the original Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) procedure and high performance liquid chromatography-positive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05f6c499812c1a89ea80fece43d8d4ac
https://doi.org/10.1021/jf2010723
https://doi.org/10.1021/jf2010723