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Biomaterials

Synthetic silk firm raises $35 million

by Alex Scott
May 15, 2021 | A version of this story appeared in Volume 99, Issue 18
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A photo of synthetic silk fiber being spun.
Credit: AMSilk
AMSilk says its fibers are fully biodegradable under aerobic and marine conditions.

AMSilk, a German start-up making synthetic silk protein via bacterial fermentation, has raised $35 million in a series C investment round led by Novo Holdings, a major shareholder in Novo Nordisk and Novozymes. Other investors include Cargill. AMSilk’s protein is used in applications such as fibers to make sportswear. The firm will use the money to expand its manufacturing base and increase international sales. This is Novo Holdings’ 12th investment in a bioindustrial company.

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