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Heme burgers, but is the faux-meat ingredient safe?

Activists say the soy leghaemoglobin or ‘heme’ in Impossible Burger, is a GMO that has not been approved by the FDA

An Impossible Foods research technician pours a hemesolution, the key ingredient, into a plant-based mixture for burgers in Redwood City, the US. Picture: REUTERS/JANE LANHEE LEE
An Impossible Foods research technician pours a hemesolution, the key ingredient, into a plant-based mixture for burgers in Redwood City, the US. Picture: REUTERS/JANE LANHEE LEE

New York — The Impossible Burger plans to make its way onto supermarket shelves as soon as next month, but an environmental group is trying to stand in its way.

Friends of the Earth filed an objection to Impossible Foods’ grocery store plan, arguing that the faux meat maker’s “magic ingredient,” soy leghaemoglobin or “heme,” has not been adequately tested for safety because only the company has done assessments. Heme is made with a genetically modified (or biotech) yeast, and Friends of the Earth objects to the use of such ingredients in the food supply, citing safety concerns.

“Impossible Food’s genetically modified organism (GMO)-derived soy leghemoglobin (SLH) should not be deemed safe by the US Food and Drug Administration (FDA) based on the inadequate scientific evidence and the absence of responsible safety regulations, and therefore should not be permitted on the market,” the organisation wrote in its comments.

“Without a clear long-term, independent safety assessment,” the organisation wrote, “the FDA cannot know whether there could be adverse reactions to the GMO-derived SLH in the intermediate to long term.”

Heme is the ingredient that gives the Impossible Burger its meat-like flavour. Last summer, the FDA following years of back-and-forth, declined to challenge findings voluntarily presented by the company that the cooked product is “Generally recognised as safe,” or GRAS. Such a “no-questions letter” means the FDA found the information provided to be sufficient.

But because of its red colour when raw, it needed to be formally approved as a safe colour additive, too. That means that retailers couldn’t let individual consumers purchase the uncooked product the way they can buy and bring home raw patties by plant-based burger competitor Beyond Meat. That has limited the company to selling only inside restaurants and at food-service locations. Impossible Foods says it now counts about 15,000 locations, including Burger King’s Impossible Whopper.

Impossible Foods said it has been in compliance with food-safety laws since 2014, before its products were offered to the public, and pointed to the FDA’s 2018 no-questions letter as evidence of its safety.

“Safety and transparency are our top priorities,” Rachel Konrad, the company’s spokesperson, said in an e-mail. “For years, this outfit has been stoking fear and doubt about Impossible Foods, which meets or exceeds all food-safety federal regulations. We urge consumers to do their homework and decide for themselves.”

FDA spokesperson Peter Cassell said in an e-mail that “the agency reviews objections when they are submitted and determines whether or not they have merit, compared against our own scientific review”.

The rule change by the FDA to call the use of SLH safe as a colour additive in imitation beef is slated to go into effect on September 4, barring any successful objections.

Bloomberg

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