The gas fermentation technology developer raised $30m from BP's corporate venturing unit, adding to earlier funding from the likes of Mitsui and Cargill.

BP Ventures, the corporate venturing subsidiary of petroleum supplier BP, has invested $30m in US-headquartered protein-based feed producer Calysta.

Founded in 2011, Calysta has developed gas fermentation technology that utilities microorganisms to convert methane into a sustainable alternative feed ingredient for fish, livestock and pet food.

The cash will be used to accelerate production of Calysta’s FeedKind protein and support its global rollout. The companies have also formed a strategic partnership for gas and power supply that will involve BP’s…