Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Walter Hammack"'
Publikováno v:
Journal of Agricultural and Food Chemistry. 66:5018-5030
We developed and validated a method for the extraction, identification, and quantitation of four nitrofuran metabolites, 3-amino-2-oxazolidinone (AOZ), 3-amino-5-morpholinomethyl-2-oxazolidinone (AMOZ), semicarbazide (SC), and 1-aminohydantoin (AHD),
Publikováno v:
Journal of Chromatography B. :87-94
Penicillin G has been applied to citrus trees as a potential treatment in the fight against Huanglongbing (HLB). Here, we have developed and validated a method to identify and quantitate penicillin G and two of its metabolites, penillic acid and peni
Autor:
Jo-Marie Cook, Fadi Aldeek, Matthew Standland, Walter Hammack, Ghislain Gerard, Daniele Canzani, Mark R. Crosswhite
Publikováno v:
Journal of AOAC INTERNATIONAL. 100:189-197
Florida citrus depends on a breakthrough in the fight against citrus greening disease. Of the antibiotics used to treatthis disease, penicillin G has been one of the most effective. Because orange fruit grown in the state of Florida are mainly used t
Autor:
Mark R. Crosswhite, Daniele Canzani, Matthew Standland, Fadi Aldeek, Jo Marie Cook, Ghislain Gerard, Walter Hammack
Publikováno v:
Journal of Agricultural and Food Chemistry. 64:6100-6107
In this work, we investigate the stability of penicillin G in various conditions including acidic, alkaline, natural acidic matrices and after treatment of citrus trees that are infected with citrus greening disease. The identification, confirmation,
Autor:
Zaid K. Hamilton, Mark R. Crosswhite, Fadi Aldeek, Jo-Marie Cook, Ghislain Gerard, Sonal Singh, Walter Hammack, Casey W. Burrows, Michael R. Rosana
Publikováno v:
Journal of Agricultural and Food Chemistry. 63:5993-6000
In this study, we developed and validated a method for the extraction, identification, and quantitation of penicillin G and its metabolites (penilloic acid and penillic acid) in a variety of citrus fruits by employing sequential liquid/liquid and sol
Publikováno v:
Journal of Agricultural and Food Chemistry. 62:80-87
An interlaboratory comparison of a multipesticide residue analytical method is reported. The goal of the comparison was to evaluate the potential for liquid chromatography/high resolution mass spectrometry along with a specific automated screening pr
Publikováno v:
Journal of AOAC INTERNATIONAL. 94:931-941
A rapid and inexpensive multiresidue method for determining pesticides in fruits and vegetables is presented. Extraction of a 15 g sample with 15 mL acetonitrile was followed by buffering with magnesium sulfate, sodium chloride, sodium citrate dihydr
Publikováno v:
Journal of AOAC INTERNATIONAL. 93:1625-1632
At the 123rd AOAC INTERNATIONAL Annual Meeting in Philadelphia, PA, 45 residue chemists gathered for a roundtable discussion of mass spectrometry (MS) used for regulatory chemical residues analysis. The session was conceived to address current techni
Autor:
Kristl Youngs, Krystle Ferbos, Barbara K Neuhaus, Walter Hammack, Mary C Carson, Donna Kilpatrick, Jeffrey A Hurlbut, James S Stuart, David N. Heller, Cristina B Nochetto, Amy N Brown
Publikováno v:
Journal of AOAC INTERNATIONAL. 86:1135-1143
An existing method for chloramphenicol (CAP) determination in shrimp using a gas chromatograph with electron capture detector was adapted for confirmation of CAP with a liquid chromatograph interfaced to a triple quadrupole mass spectrometer. CAP res
Autor:
David N, Heller, Steven J, Lehotay, Perry A, Martos, Walter, Hammack, Amadeo R, Fernández-Alba
Publikováno v:
Journal of AOAC International. 93(5)
At the 123rd AOAC International Annual Meeting in Philadelphia, PA, 45 residue chemists gathered for a roundtable discussion of mass spectrometry (MS) used for regulatory chemical residues analysis. The session was conceived to address current techni