Journal of AOAC International

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Thermoluminescence Detection of Irradiated Shellfish: International Interlaboratory Trial
Journal of AOAC International - Tập 86 Số 5 - Trang 976-982 - 2003
D.C.W. Sanderson, L. Carmichael, Saffron Fisk, P Christensen, Henry Delincée, Hans Nootenboom, Jürgen Pfordt, S. Pinnioja, G Schreiber, Ute Wagner
Abstract An international interlaboratory trial was conducted using thermoluminescence for the detection of irradiated shellfish, aimed at validating the method for routine use. Nephrops norvegicus, mussels, brown shrimps, black tiger prawns, and king scallops were presented as nonirradiated and irradiated to 0.5 and 2.5 kGy. The protocol called for ...... hiện toàn bộ
Perspective on Advancing FDA Regulatory Monitoring for Mycotoxins in Foods using Liquid Chromatography and Mass Spectrometry (Review)
Journal of AOAC International - Tập 99 Số 4 - Trang 890-894 - 2016
Kai Zhang, Jon W. Wong, Alexander J. Krynitsky, Mary W Trucksess
Abstract 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 action or advisories. To improve the efficiency of mycotoxin analysis, the researchers at the FDA'...... hiện toàn bộ
European Regulations for Labeling Requirements for Food Allergens and Substances Causing Intolerances: History and Future
Journal of AOAC International - Tập 101 Số 1 - Trang 60-69 - 2018
Martina Koeberl, Dean Clarke, Katrina J. Allen, Fiona Fleming, Lisa Katzer, N. Alice Lee, Andreas L. Lopata, Maria Said, Pieter Scheelings, Neil A. Shepherd, Robin Sherlock, James H. Roberts
Abstract Food allergies are increasing globally, including numbers of allergens, the sensitization rate, and the prevalence rate. To protect food-allergic individuals in the community, food allergies need to be appropriately managed. This paper describes current Australian food allergen management practices. In Australia, the prevalence of food aller...... hiện toàn bộ
Methodology for Determining Degree of Hydrolysis of Proteins in Hydrolysates: A Review
Journal of AOAC International - Tập 93 Số 5 - Trang 1515-1522 - 2010
Shane M. Rutherfurd
Abstract Degree of hydrolysis (DH) is defined as the proportion of cleaved peptide bonds in a protein hydrolysate. Several methods exist for determining DH; the most commonly used of these include the pH-stat, trinitrobenzenesulfonic acid (TNBS), o-phthaldialdehyde (OPA), trichloroacetic acid soluble nitrogen (SN-TCA), and formol titration methods. T...... hiện toàn bộ
Analysis of Ginkgo biloba for the Presence of Ginkgotoxin and Ginkgotoxin 5′-Glucoside
Journal of AOAC International - Tập 83 Số 6 - Trang 1313-1320 - 2000
Peter Scott, Benjamin P.‐Y. Lau, G. A. Lawrence, David Lewis
Abstract Hot water extracts of Ginkgo biloba seeds were analyzed for the presence of ginkgotoxin (4′-O-methylpyridoxine) by reversed-phase liquid chromatography (LC) using methanol–0.05M KH2PO4 (1 + 9, v/v) adjusted to pH 3 as mobile phase. Detection was by fluorescence (excitation 280 nm, emission 370 nm). A straight line calibration curve was obtai...... hiện toàn bộ
Determination of Total Phosphorus in Foods by Colorimetric Measurement of Phosphorus as Molybdenum Blue after Dry-Ashing: NMKL1 Interlaboratory Study
Journal of AOAC International - Tập 77 Số 6 - Trang 1557-1561 - 1994
T Katrdna Pulliainen, Harriet Wallin
Abstract A spectrophotometric method in which the sample is dry-ashed in the presence of zinc oxide, and total phosphorus content is measured colorimetrically as molybdenum blue was evaluated by 12 participating laboratories from the Nordic countries. The study included potato flour, sausage, cold ham, infant formula powder, cheese, and skimmed milk ...... hiện toàn bộ
Simple and Rapid Determination of Phytase Activity
Journal of AOAC International - Tập 77 Số 3 - Trang 760-764 - 1994
Adrianus J Engelen, Fred C Van Der Heeft, Peter H G Randsdorp, Ed L C Smtt
Abstract A simple and rapid method is described for determining the enzymatic activity of microbial phytase. The method is based on the determination of inorganic orthophosphate released on hydrolysis of sodium phytate at pH 5.5.
Conductive Polymeric Ionic Liquid/Fe3O4 Nanocomposite as an Efficient Catalyst for the Voltammetric Determination of Amlodipine Besylate
Journal of AOAC International - Tập 100 Số 2 - Trang 406-413 - 2017
Fariba Fathirad, Ali Mostafavi, Daryoush Afzali
Abstract A novel conductive polymeric ionic liquid (IL)-Fe3O4 nanocomposite (represented as PIL-Fe3O4) based on inorganic-organic hybrid material was synthesized using two different methods. Nuclear magnetic resonance, Fourier transform infrared, X-ray diffraction, and field emission scanning electron microscopy characterized the structures of IL, Fe...... hiện toàn bộ
Enzymatic Determination of Free Carnitine in Milk and Infant Formulas
Journal of AOAC International - Tập 78 Số 1 - Trang 69-74 - 1995
Harvey E. Indyk, David C Woollard
Abstract A simple spectrophotometric assay for free carnitine in milk and supplemented infant formulas has been developed. After acid extraction, carnitine is measured enzymatically through its reaction with carnitine acetyltransferase coupled with acetyl coenzyme A and dithiobenzoate (DTNB). The manually performed method is rapid, accurate, and conv...... hiện toàn bộ
Determination of Bisphenol A in Sewage Effluent and Sludge by Solid-Phase and Supercritical Fluid Extraction and Gas Chromatography/Mass Spectrometry
Journal of AOAC International - Tập 83 Số 2 - Trang 290-298 - 2000
Hing‐Biu Lee, Thomas E. Peart
Abstract Methods have been developed for the determination of bisphenol A (BPA) residues in municipal sewage and sludge samples. BPA in wastewater samples was enriched with a C18 solid-phase extraction cartridge, eluted with acetone, and converted to the pentafluoropropionyl derivative. For sludge samples, BPA was acetylated and extracted with superc...... hiện toàn bộ
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