Since its inception, a number of studies1 have raised concerns about Quorn's safety, especially in people with food- and/or mold allergies. An early study by the manufacturer found 10 percent of 200 human subjects developed nausea or stomachache after eating Quorn.2 The Center for Science in the Public Interest (CSPI) maintains an adverse report collection site for Quorn-related illnesses, which include:3
- Nausea
- Cramps and/or diarrhea
- Forceful vomiting
- Anaphylactic reactions
- Death4
The Quorn brand now has competition from Impossible Foods and its meatless, "bleeding" burger.5,6,7,8,9 Contrary to lab grown meat 10 (which may hit the U.S. market as early as next year 11), this meat substitute contains a mix of soy, wheat, coconut oil, potatoes and "heme," the latter of which is derived from genetically engineered yeast.
Impossible Foods was founded in 2011 by Pat Brown, a Stanford University chemist. A primary ingredient in the Impossible Burger is genetically engineered soy leghemoglobin, which releases a heme-like protein when broken down. This protein is what gives the plant-based patty its meatlike look, taste and texture, and makes the patty "bleed" when cooked.
While the company refers to it as "heme," technically, plants produce non-heme iron, and this is technically GE yeast-derived soy leghemoglobin.12 Heme iron only occurs in meat and seafood. A main difference between heme and non-heme iron has to do with its absorbability. Plant-based non-heme iron is less readily absorbed. This is one of the reasons why vegans are at higher risk of iron-deficiency anemia than meat eaters. Moreover, while soy leghemoglobin is found in the roots of soybean plants, the company is recreating it using GE yeast. As explained on the company website:13















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