Through DNA testing the students found food labeled as sturgeon caviar that was in fact Mississippi paddlefish; "sheep's milk cheese" that made from cow's milk; "smelt" that was Japanese anchovy; and "venison dog treats" made from beef.
The LA Times blog, Booster Shot picked up the story and quoted the students report:
"We do not know where or why the mislabeling occurred, but most cases appeared to involve substitution of a less expensive or less desirable item, suggesting the possibility of deliberate mislabeling for economic gain. We also think mislabeling is a serious problem because certain individuals have allergies or dietary restrictions regarding certain foods. ... Like a powerful flashlight, DNA exposes hidden identities of living and once-living things. We look forward to more explorations!"There are, of course, a couple of good aspects to the story. First, what a great way to introduce students to the power of information and of science. Second, what a good way to catch mislabeling. My guess is that companies may be less hesitant to cheat if they worry about getting caught.
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