Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Shia S. Kuan"'
Publikováno v:
Journal of AOAC INTERNATIONAL. 82:90-94
A liquid chromatographic method is described for the determination of zearalenol and zearalenone in corn. Zearalenol and zearalenone are extracted from corn with methanol–water (1+1) and cleaned up using a solid-phase extraction (SPE) disk, separat
Autor:
Pesi P. Umrigar, Shia S Kuan, George M Ware, Allen S Carman, Kenneth V Miller, Humberto Guerrero
Publikováno v:
Journal of AOAC INTERNATIONAL. 79:456-464
Immunoaffinity column-based sample preparation procedures for determination of aflatoxins B1, B2,G1, and G2 in several food matrixes and aflatoxin M1 in milk have been automated by using flexible automation, or robotics. Components used to assemble t
Publikováno v:
Analytical Letters. 27:693-715
A method for the determination of fumonisins B1 and B2 in corn was developed. The method involves sample extraction with methanol:water (80:20) and the use of a commercially available Fumonitest column for sample cleanup. The capacity, selectivity, c
Autor:
Glenn A. Bennett, Allen S Carman, George M Ware, Octave J Francis, Shia S. Kuan Pesi Umrigar, Lawrence Carter
Publikováno v:
Analytical Letters. 26:1751-1770
A method is described for the determination of fumonisin B1 in corn. The method involves sample extraction with methanol:water (75:25) and partial purification using a solid phase extraction. Fumonisin B1 is reacted with naphthalene-2,3-dicarboxaldeh
Publikováno v:
Biosensors and Bioelectronics. 6:49-54
The construction of an enzyme electrode for one-step determination of fructose has been successful. The enzyme, D-fructose dehydrogenase (FDH), was immobilized on a membrane. Hexacyanoferrate (III) was used as a redox mediator and the change of curre
Publikováno v:
Enzyme and Microbial Technology. 12:104-108
Two types of amperometric lactose enzyme sensors based on the enzyme systems galactose oxidase (single-enzyme electrode), or β-galactosidase and glucose oxidase (two-enzyme electrode) with a hydrogen peroxide base electrode were constructed. The enz
Publikováno v:
Journal of Agricultural and Food Chemistry. 38:185-190
La methode permet un dosage des phytoestrogenes par chromatographie HPLC dans le soja et produits derives, sans delipidation selon le type de detection, UV ou fluorescence, la limite de detection est de 0.5 a 2 p.p.m.
Publikováno v:
Journal of Agricultural and Food Chemistry. 39:724-726
The linear calibration curve ranged from 0.24 to 250 mg. The detection limit of aluminium was 0.24 ng. The accuracy of the method was evaluated was evaluated by using NBS pine needles and spinach leaves as standard reference materials.
Publikováno v:
Analytica Chimica Acta. 124:169-176
An immobilized immuno-stirrer is described for the determination of creatine kinase-MB isoenzyme in blood serum. The IgG antibodies are immobilized on alkylamine glass beads using glutaraldehyde as cross-linking reagent, and the beads are packed into
Publikováno v:
Journal of AOAC INTERNATIONAL. 67:1095-1098
A sensitive, highly selective liquid chromatographic (LC) method is described which uses electrochemical (EC) reduction of the analyte in the determinative step. The method is capable of determining xanthomegnin in mixed animal feeds and grains at le