by Staff Writers
Seville, Spain (UPI) Dec 1, 2011
Spanish researchers say they've developed a technique based on chemistry that is 99 percent accurate at revealing the country of origin of beer.
Measuring the content of iron, potassium, phosphates and polyphenols, researchers at the Spanish Foundation for Science and Technology correctly identified German, Spanish and Portuguese beers, a foundation release said Thursday.
"Beers can be differentiated from one another according to their country of origin by using parameters linked to raw materials, such as water (metals and negatively charged ions) and the type of hop (polyphenol content)," Jose Marcos Jurado, a chemist at the University of Seville, said.
"The differences can seem very subtle but the model is capable of detecting the relationship between these chemical descriptors and the country of origin of beers," he said.
Authenticity and geographical identification studies are "very important" for the food industry, researchers said, "given that they allow the differentiating characteristics of a product to be established.
"This can have an impact on their marketing."
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Herbicide spurs reproductive problems in many animals
Champaign, IL (SPX) Dec 02, 2011
An international team of researchers has reviewed the evidence linking exposure to atrazine - an herbicide widely used in the U.S. and more than 60 other nations - to reproductive problems in animals. The team found consistent patterns of reproductive dysfunction in amphibians, fish, reptiles and mammals exposed to the chemical. Atrazine is the second-most widely used herbicide in the U.S. ... read more
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