A fund backed by Jeff Bezos and Bill Gates thinks microbes in Yellowstone Park can unlock the secrets to sustainable food.

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Scientists have long been captivated by a group of microscopic organisms in Yellowstone National Park. The microbes thrive at extreme temperatures and can efficiently multiply with limited resources. The feat has inspired a company called Sustainable Bioproducts, which is replicating the process in a laboratory and eventually, it hopes, at a large scale.

On Monday, the Chicago-based startup said it raised $33 million to accelerate the research. Venture firm 1955 Capital led the round, which also included Breakthrough Energy Ventures, a climate-focused technology fund backed by a roster of billionaires including Amazon.com’s Jeff Bezos and Microsoft’s Bill Gates. Michael Bloomberg, the founder and majority owner of Bloomberg LP, is also an investor in the fund.

Sustainable Bioproducts said it feeds common components of food such as starches or glycerin to the already high-protein microbes, which then quickly multiply. The resulting protein, like meat or soy, contains the nine amino acids considered essential to the human diet. But the end product wouldn’t necessarily resemble meat. “It could be some things that are more meat-like,” said Thomas Jonas, the company’s chief executive officer. “It can be savory; it can be sweet; it can be liquid; it can be dairy-like.”

Lab-grown meat is seen as the golden goose for corporate food giants and sustainability-minded investors alike. It promises a more efficient, more humane and less environmentally detrimental way of feeding the world than raising livestock. General Mills and Tyson Foods have lined up alongside venture capitalists like Khosla Ventures to fund new companies developing synthetic or plant-based burgers. So far, the category has yet to break out beyond a niche of coastal vegans. In part, that’s because the products are expensive but also because many diners haven’t quite overcome their skepticism of lab-grown food.

Jonas and his co-founder, Mark Kozubal, never intended to be part of the fake meat craze. Jonas was leading a consumer-goods division at a product-packaging company, and Kozubal was studying geomicrobiology at Montana State University. Kozubal started the company in 2013 to focus on sustainable energy, and Jonas joined soon after. It didn’t take them long to discover the opportunity in food.

The curious organisms from Yellowstone are known as extremophiles for their ability to withstand the U.S. park’s superheated pools. Using Kozubal’s research into these microbes as a basis for their work, Sustainable Bioproducts hopes to have a product to sell within two years, Jonas said. “These extremophiles learned to be extremely efficient in using their resources,” he said. “They are very relevant at a point in time when humanity already uses tremendous amounts of resources to support the highly inefficient animal-protein model.”

Andrew Chung, founder of 1955 Capital, led the investment in Sustainable Bioproducts, which closed last year. The company also has support from Big Food. Danone, the yogurt conglomerate and owner of Evian water, and Archer-Daniels-Midland, an agriculture giant, contributed funds to the round.

Oganisms from Yellowstone are known as extremophiles for their ability to withstand the U.S. park’s superheated pools. Sustainable Bioproducts wants to replicate the process to create a high-protein product. Shown here is Grand Prismatic Spring at Yellowstone National Park in Wyoming. (Josh Haner/The New York Times)
Oganisms from Yellowstone are known as extremophiles for their ability to withstand the U.S. park’s superheated pools. Sustainable Bioproducts wants to replicate the process to create a high-protein product. Shown here is Grand Prismatic Spring at Yellowstone National Park in Wyoming. (Josh Haner/The New York Times)