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UCLA engineers demonstrate use of proteins as raw material for biofuels, biorefining

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Two types of raw materials are currently used for biorefining and biofuel production: carbohydrates and lipids. Biofuels like ethanol are derived from carbohydrate raw materials such as sugars and lignocellulose, while biodiesels are derived from another raw material, lipid-rich vegetable oil.

In a study published in the journal Nature Biotechnology, researchers at the UCLA Henry Samueli School of Engineering and Applied Science demonstrate for the first time the feasibility of using proteins — one of the most abundant biomolecules on earth — as a significant raw material for biorefining and biofuel production.

“Proteins had been completely ignored as a potential biomaterial because they’ve been thought of mainly as food. But in fact, there are a lot of different proteins that cannot be used as food,” said James C. Liao, the Chancellor’s Professor of Chemical and Biomolecular Engineering at UCLA and senior author of the study. “These proteins were overlooked as a resource for fuel or for chemicals because people did not know how to utilize them or how to grow them. We’ve solved these problems.”