Mitsui's corporate venturing unit has joined the consortium investing $45m in clean-tech firm BioAmber and floated Boingo Wireless.

Japan-based financial services company Mitsui’s corporate venturing unit has joined the consortium investing $45m in clean-tech firm BioAmber and floated Boingo Wireless.

BioAmber raised $45m in its series B round, which was led by venture capital firms Naxos Capital Partners and Sofinnova Partners. Canada-based Cliffton Group also participated alongside Mitsui. Previous investors from the October 2009 A round included South Korea-based corporate venturing unit Samsung Venture Investment Corporation and Agro-Industrie Recherches et Développements (ARD), the research and development centre of a large…