Frankfurter Fraud: Finding Out What’s In Your Hot Dog
News Aug 12, 2016
Hot dogs are the perfect summer fare. But knowing for sure what you’re getting inside a bun can be difficult. Now scientists have devised a method that could help prevent frankfurter fraud, which is especially important for those who can’t eat certain types of meats. They report their approach in ACS’ Journal of Agricultural and Food Chemistry.
Instances of food adulteration have caused several global scandals in recent years. Some caused serious illness and even death, such as the addition of melamine to baby formula in China. And other incidents didn’t affect people’s health but might have violated cultural or religious dietary restrictions, particularly with respect to the kinds of meat that adherents can consume. Currently, testing the authenticity of a meat product involves sampling its DNA, amplifying the genetic material with the polymerase chain reaction (PCR) and looking for certain markers. But existing methods often only search for one, long DNA sequence, which could break down during food processing and lead to false results. Md. Eaqub Ali and colleagues wanted to come up with a more reliable approach.
The researchers developed a technique to look for pairs of short DNA sequences from beef, buffalo and pork in hot dogs. They used their approach on 20 beef franks that they bought in markets in Malaysia, where the researchers are based. Testing showed their target sequences were stable under food processing conditions. The researchers also found that all of the hot dogs labeled as “beef” also contained buffalo meat.
The authors acknowledge funding from the University of Malaya.
RNA That Helps Grow Blood Vessels Could Aid Heart Disease ResearchNews
STEEL, a noncoding RNA, acts on genes to stimulate produce of blood vessels, a finding which could advance efforts to combat heart disease.READ MORE
High Levels of Microplastics Found in Northwest Atlantic FishNews
A new study sheds light on the magnitude of microplastic pollution in our oceans. The study found microplastics in the stomachs of nearly three out of every four mesopelagic fish caught in the Northwest Atlantic -- one of the highest levels globally.READ MORE
Graphene on Toast, Anyone?News
Scientists who introduced laser-induced graphene (LIG) have enhanced their technique to produce what may become a new class of edible electronics. The lab is investigating ways to write graphene patterns onto food and other materials to quickly embed conductive identification tags and sensors into the products themselves.READ MORE