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Articles by Topic - Laboratory
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Departments: Detect Pesticides With Mass Spec
More than once in my marriage—in fact, more than once in the last month—my significant other has presented me with a mysterious substance and asked, “Does this taste funny to you?” I generally decline these invitations to explore the unknown, not because I lack the courage, though that is true, but as someone with a science background, I feel I lack the proper instrumentation.
Departments: Routine, Reliable Mercury Screeing
Mercury is a naturally occurring element found in air, water and soil. It exists in three different forms, elemental or metallic mercury, inorganic mercury compounds, and organic mercury compounds. Coal-burning power plants are the largest source of mercury emissions to the air caused by humans in the United States, accounting for more than 40% of all domestic anthropogenic mercury emissions.1 Additional mercury emission sources include the burning of hazardous waste, chlorine production, mercury product...
Departments: Accurate Testing of Complicated Food Matrices
Worldwide food safety concerns have risen dramatically as the number of food contamination incidents and product recalls has increased. Accurately monitoring contaminant levels in food and agricultural products is essential to assure the safety of the food supply and to manage human health risks.
Departments: Choose Your Toolbox
Numerous food contamination incidents in recent years have put food safety in the spotlight as never before. The obvious challenges of policing a global, interdependent food production network are prompting consumers to question food safety, governments to increase regulation, and food producers to search for new testing solutions. In light of public concern over food safety, heightened in particular by dioxins found in Irish pork and melamine found in infant formula made in China, government agencies and...
Features: Food Quality Jets Into the Future
Remember “The Jetsons?” The wildly popular animated series rocketed onto the primetime television scene on September 23, 1962. Set mainly in sky-high Orbit City, the captivating show featured George Jetson, his boy Elroy, daughter Judy, and Jane, his wife, living the life of an average family in the year 2062. Residing in Skypad Apartments and employing a lovable maid named Rosie the Robot, the Jetsons introduced impressionable Earthlings to a galaxy of futuristic flying space cars, instant...
Departments: LC/MS/MS Can Help Screen Cereal
Water-soluble vitamins, which are very polar, have poor retention on reverse phase columns. The presence of ion pair reagents such as heptafluorobutyric acid in the mobile phase has been shown to improve the separation and retention of these compounds. The drawback of using such ion pair reagents, however, is the high background levels generated inside the mass spectrometer (MS). Therefore, we have developed a rapid and sensitive method with ammonium formate in the mobile phase solvent using a column with...
Departments: Protein Determination in Cereals and Seeds
Cereals and seeds are significant components of the human diet and the principal part of feeding stock for domestic animals. One of the most important nutrients present in these is protein. Functioning as enzymes, hormones, and antibodies, as well as transport and structural components, proteins are required for the body’s structure and proper function. In addition to its dietary importance, protein content has become a guideline for some cereal trade transactions as well as a means to assess...
Departments: A Contract Lab Questionnaire
Finding the right outside contract laboratory is one of the most important decisions a food company must make. The laboratory you hire must be able to serve as a strategic partner to help your company navigate the many challenges of supply chain safety in today’s global economy.
Departments: All in a Day’s Work
What is this unknown material? What’s causing the off flavor in our product? Can you find the source of this off odor? Does my product contain pesticides or allergens? When such questions arise and unfamiliar problems occur, food and beverage manufacturers may need outside help to find reliable answers. For problems that can’t be solved in house, contract laboratories are often the answer.
Departments: DIY Staph Testing
In-house testing for microorganisms such as Escherichia coli is routine for most food manufacturers. An increasing number of companies, however, are also performing in-house testing for Staphylococcus aureus. In fact, 62% of the 1,400 manufacturers surveyed in 2000 were already doing their own evaluations.