Rwanda-based coffee producer KZ Noir, which is owned by Kaizen Venture Partners, a Sub-Saharan Africa-focused private equity firm, has closed a US$1.5 million mezzanine debt facility with impact investor Grassroots Business Fund, and a US$1.2 million convertible debt investment with impact investor Acumen. KZ Noir is a coffee processing company, exporting green coffee globally and selling roasted coffee regionally. The company will use the funds for working capital, debt refinancing and capacity expansion.