Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Gail M Shannon"'
Publikováno v:
Journal of AOAC INTERNATIONAL. 66:582-586
A method was developed for the determination of aflatoxin B1 in commercially prepared feeds. The method incorporates methylene chloride and citric acid solution extraction, cleanup on a small silica gel column, and thin layer chromatography for quant
Autor:
Gail M Shannon, Robert D Stubblefield
Publikováno v:
Journal of AOAC INTERNATIONAL. 57:852-857
An international collaborative study involving 19 collaborators was conducted to test methods for the determination and chemical confirmation of aflatoxin M1 in dairy products. For the quantitative method, collaborators assayed samples of liquid and
Autor:
Gail M Shannon, Odette L. Shotwell
Publikováno v:
Journal of AOAC INTERNATIONAL. 62:1070-1075
The CPC modified method, the Holaday modified method, and the combination of the 2 procedures have been compared. The CPC modified method involves more cleanup steps but has a more sensitive column. The Holaday modified procedure has fewer cleanup st
Publikováno v:
Journal of AOAC INTERNATIONAL. 72:332-335
A purification procedure for cyclopiazonic acid has been developed, using sequential preparative and semi-preparative liquid chromatography. Crude cyclopiazonic acid (324 mg) was extracted from a 1 L fermentation medium with chloroform-methanol (80 +
Autor:
Glenn A. Bennett, Gail M Shannon, Robert D Stubblefield, Odette L. Shotwell, W. F. Kwolek, Ronald D. Plattner
Publikováno v:
Journal of AOAC INTERNATIONAL. 68:954-957
A study was made of deoxynivalenol (DON) incidences and levels in 1982 hard red winter (HRW) wheat grown in areas of Nebraska and Kansas known to have scabby wheat. Samples of wheat harvested in the areas were collected from elevators and analyzed fo
Autor:
Robert D Stubblefield, Gail M Shannon
Publikováno v:
Journal of AOAC INTERNATIONAL. 57:847-851
A published method to determine aflatoxin M1 in fluid and concentrated milks was refined to permit assays of a wider range of dairy products. Milk products that were spiked with aflatoxin Mx were processed with commercial dairy cultures, rennet, and
Publikováno v:
Journal of AOAC INTERNATIONAL. 56:1106-1110
Six published methods for the determination of aflatoxin M1 in liquid and powdered milk were compared because a quantitative assay sensitive to 0.1 μg/L was needed for routine analysis. Each method was tested with both spiked and naturally contamina
Aflatoxins M1 and M2 and Parasiticol: Thin Layer Chromatography and Physical and Chemical Properties
Publikováno v:
Journal of AOAC INTERNATIONAL. 55:762-767
A survey of known anatoxin solvent systems for resolution of aflatoxins M1 and M2 on TLC plates revealed that the best system for determining aflatoxins B1, B2, G1, G2, M1, and M2 is isopropyl alcohol-acetone-chloroform (5 + 10 + 85). Substitution of
Autor:
Vandergraft Ee, Gail M Shannon, M. L. Smith, Marion L Goulden, Clifford W Hesseltine, Odette L. Shotwell
Publikováno v:
Mycologia. 60:304-312
SUMMARYForages are often subjected to fungus growth both in storage and in the field and, therefore, may be contaminated with aflatoxin. Aflatoxin-producing strains of Aspergillus flavus were used ...
Publikováno v:
Mycopathologia. 45:259-266
In liquid cultures growing and stationary phase cells ofFlavobacterium aurantiacum NRRL B-184 eliminated aflatoxin M1. Toxin concentrations of 15µg/ml and 37.5µg/ml interfered with bacterial growth, and at the higher level 4.4µg M1 was removed fro