SAN DIEGO & CHICAGO--(BUSINESS WIRE)--ChloroFill LLC, a renewable, sorghum-based building material company, and Chromatin, Inc., an agricultural biotechnology company that is developing sorghum feedstocks for bio-industrial processes, today announced a collaboration to harvest Chromatin sorghum for the production of ChloroFill’s building products. Despite 2012’s record drought conditions, the partners successfully grew a high-yielding 2012 season crop, to be used in ChloroFill’s production process. This represents the first use of Chromatin’s proprietary sorghum for the manufacture of renewable building materials.