April 7th 2025
A multidimensional liquid chromatography (LC)-based technique was created to help profile antioxidant metabolites in onion leaf extracts.
Changes from EPA Method 218.6 to 218.7 Yield Improved Detection Limits for Hexavalent Chromium
February 22nd 2012Chromium is a naturally occurring metal that is widely used in steel making, plating, tanning, paints, dyes, and wood preservation. The most common environmental forms are trivalent Cr(III), hexavalent Cr(VI), and the metallic form Cr.
Establishing USP Rebaudioside A and Stevioside Reference Standards for the Food Chemicals Codex
February 1st 2012The United States Pharmacopeial Convention (USP) publishes the Food Chemicals Codex (FCC), which is a compendium of food ingredient documentary standards (monographs) that provide tests, procedures, and acceptance criteria to indicate the safety and quality of a food ingredient. Physical reference standards can be associated with the procedures of an FCC monograph and the reference standards are needed for conducting the procedures. This article describes characterization and collaborative testing of new USP rebaudioside A and stevioside reference standards and their suitability for intended uses in the FCC rebaudioside A monograph.
Separations in the Food Industry
October 7th 2011The global food, beverage and agricultural industry caters to the population of the entire world. Even though the food industry does not rely on analytical instrumentation to the same extent as perhaps other industries, the sheer size of the industry results in a considerable market for such instruments.
Separations in the Food Industry
September 14th 2011The global food, beverage, and agriculture industry caters to the population of the entire world. Even though the food industry does not rely on analytical instrumentation to the same extent as perhaps other industries, the sheer size of the industry results in a considerable market for such instruments.
Rapid Screening and Quantitation of 534 Pesticides From Food By LC–MS-MS
September 1st 2011With more than 800 pesticides currently in use there is growing concern by government agencies about the effect of pesticide exposure on human health. While analytical techniques like GC or GC–MS have traditionally been used for pesticide analysis, LC–MS-MS has become the technique of choice due to speed, increased sensitivity, and reduced sample preparation. The following describes an LC–MS-MS method for screening of 534 pesticides in food products.