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Articles by Topic - Testing
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Departments: On the Trail of Salmonella
Of all foodborne pathogens, Salmonella is one of the most difficult to isolate because of its homogeneity. Strains like Salmonella enteritidis and Salmonella Montevideo are, genetically speaking, almost indistinguishable from one another using conventional tools of forensic microbiology.
Departments: Certified Wheat Seed Ensures Quality of the Loaf
When it comes to food ingredients, few food manufacturers can match the quality assurance and traceability claims of Warburtons, the United Kingdom’s largest independent baker.
Departments: Dioxin Detection Offers Protection
In recent years, several high-profile contamination crises have raised concerns over dioxin levels in a variety of food products. In December 2008, the Irish government recalled all pork products made in the Republic of Ireland after the discovery of dioxins in slaughtered pigs. Tests on some of the Irish pork products showed dioxin levels up to 200 times the recognized safety limit. This was followed by the Chinese government’s December 9th announcement banning all imports of pork from Ireland after...
Departments: Making Fluid Milk Taste Better Longer
According to USDA, fluid milk accounted for 18.1percent (17.4 billion lbs.) of edible food lost by retailers, foodservice and consumers in 1995. (See Kantor et al., 1997 for more information). One major factor contributing to dairy product loss and reduced quality is spoilage of products by bacteria. Spoilage presents the dairy industry with a two-pronged problem: Direct economic losses from products removed from the distribution chain and long-term loss of consumers who have had an unpleasant encounter...
Departments: Signs of the Times
Levels of raw grain testing are increasing as measurement science technology increases. According to Charles Hurburgh, professor-in-charge of the Iowa Grain Quality Initiative, 1 a grain quality and research program at Iowa State University, there are a lot of new requirements on the food trait front, such as amino acid profiles and fatty acid profiles.
Departments: Air Sampling 101
Proactive companies from all sectors; pharmaceutical, food and beverage, biotechnology, hospitals and environmental protection, are realizing the importance of an active air sampling program. There are several options in sampling methods, some more efficient than others.
Departments: Choosing a Laboratory Water System
Food analysis laboratory needs for purified water tend to be modest in quantity but demanding in quality. Food analytical methods call for two general water quality grades, pure and ultrapure. To meet purified water needs, cost-conscious laboratories consuming up to 15 liters of water per day must choose from among several options…
Departments: Machine Vision Sees Contaminants We Can’t
Scientists at the ARS Instrumentation and Sensing Laboratory in Beltsville, Md., are developing "machine-vision" systems that can detect contamination the human eye often can't see called machine-vision systems. These are quicker and more accurate than the human eye and don't require anyone to handle the fruit or cut it up.
Departments: Measuring Quality in Cultured Dairy Products
Cultured dairy products such as yogurt, sour cream and the like exhibit several physical properties which give them their unique character. Consumers may subjectively describe these as firmness, creaminess, thickness or even heaviness or lightness. Manufacturers can find subjective, sensory terms like these difficult to measure in the lab, and impossible to use for setting upper and lower quality control limits.