Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Alva F. Cucullu"'
Publikováno v:
Journal of the American Oil Chemists' Society. 54:A238-A241
Samples of aflatoxin-contaminated stored ginned cottonseed and of freshly harvested seed cotton and companion ginned seed were examined under long wave ultraviolet (UV) and visible light to develop physical criteria for separating aflatoxin-contamina
Autor:
Mary W Trucksess, Walter A Pons, Louise S Lee, Leonard Stoloff, Alva F Cucullu, Anthony O Franz
Publikováno v:
Journal of AOAC INTERNATIONAL. 60:795-798
A method for determining aflatoxin in dairy products was modified for eggs, initially by additional cleanup steps. The modified method proved practical for use in survey analyses and was sufficiently sensitive to detect aflatoxin B1 at levels less th
Publikováno v:
Journal of Agricultural and Food Chemistry. 24:1167-1170
Publikováno v:
Journal of AOAC INTERNATIONAL. 57:626-631
The major product formed from reacting pure aflatoxin B1 with ammonium hydroxide at 100°C under pressure was isolated in crystalline form. The compound, molecular weight 286 (mass spectra), ultraviolet (UV) absorption, λMe0H 227, 324 nm (ε 15,920,
Publikováno v:
Journal of AOAC INTERNATIONAL. 56:803-807
A rapid and simple method, originally designed for detecting aflatoxin contamination in cottonseed products within 15 min, was modified for application to a variety of agricultural products. The modified method involves rapid blender extraction of th
Autor:
Anthony O Franz, L. A. Goldblatt, James A. Robertson, Walter A Pons, Louise S. Lee, Alva F. Cucullu
Publikováno v:
Journal of AOAC INTERNATIONAL. 49:554-562
An analytical procedure originally developed for the determination of aflatoxins in cottonseed products has been modified for application to many agricultural materials. Aflatoxins are rapidly extracted free of lipid contamination with 70% acetone. M
Publikováno v:
Journal of the American Oil Chemists' Society. 44:249-252
A rapid analytical procedure for determining the residual cyclopropenoid fatty acids (CPA) in cottonseed meal has been developed. The procedure involves room-temperature extraction of crude CPA-containing lipids with a hexane-water-acetone azeotrope
Publikováno v:
Journal of AOAC INTERNATIONAL. 55:1114-1119
The detection method incorporates a 3 min blender extraction of the sample with aqueous acetonitrile, followed by partition of aflatoxins from an aliquot of the extract into benzene to effect a 4-fold concentration of the aflatoxins. A millicolumn (4
Publikováno v:
Journal of the American Oil Chemists' Society. 43:89-92
Subsamples of a given lot of peanuts may vary greatly in aflatoxin content due to extreme variability in the degree of contamination of individual kernels. A micro method, adapted from the aqueous acetone procedure recently proposed by Pons and Goldb
Publikováno v:
Journal of AOAC INTERNATIONAL. 55:768-774
The official AOAC method for aflatoxins in cottonseed products was modified to provide a rapid quantitative method whereby an analysis can be completed in as little as 1 hr. The method incorporates a choice of either 5 min blender or 30 min shaker ex