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
Composition of Pomegranate Juice
Journal of AOAC International - Tập 95 Số 1 - Trang 163-168 - 2012
Dana A Krueger
Abstract A database of 793 commercial pomegranate juices was analyzed to produce a profile for authentication of pure pomegranate juice. The database consisted of data from a mix of authentic and adulterated samples. Statistical tools were used to reduce the database to a stable sample set of 477 presumably authentic samples. The profile obtained (me...... hiện toàn bộ
Improved Extraction of Ginkgotoxin (4′-O-methylpyridoxine) from Ginkgo biloba Products
Journal of AOAC International - Tập 88 Số 1 - Trang 26-29 - 2005
G. A. Lawrence, Peter Scott
Abstract A simple extraction procedure was applied to the analysis of canned/packaged white nuts and Ginkgo biloba extracts. Extraction by shaking with water at room temperature was more convenient to use than a previously published Soxhlet procedure for analysis of packaged Ginkgo biloba seeds (white nuts) for ginkgotoxin; recoveries from spiked dri...... 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.
A Single-Laboratory Validated Method for the Generation of DNA Barcodes for the Identification of Fish for Regulatory Compliance
Journal of AOAC International - Tập 94 Số 1 - Trang 201-210 - 2011
Sara M. Handy, Jonathan R. Deeds, Natalya Ivanova, Paul D. N. Hebert, Robert Hanner, Andrea Ormos, Lee A. Weigt, Michelle Moore, Haile F. Yancy
Abstract The U.S. Food and Drug Administration is responsible for ensuring that the nation's food supply is safe and accurately labeled. This task is particularly challenging in the case of seafood where a large variety of species are marketed, most of this commodity is imported, and processed product is difficult to identify using traditional morpho...... hiện toàn bộ
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