Fig. 3
From: Short-chain ketone production by engineered polyketide synthases in Streptomyces albus
Octane numbers of short-chain ketones blended into a model gasoline. Three ethyl ketones (green), five methyl ketones (blue), other ketones (yellow), ethanol (gray square), and 1-butanol (gray circle) were added into CARBOB at 10, 20, and 30 Vol%. a, b Research octane numbers (a) and Motor octane numbers (b) were measured by ASTM methods D2699 and D2700, respectively. Short-chain ketones produced by engineered S. albus strains were shown as a dashed line. 2-methyl-3-pentanone (green circle), 3-hexanone (green triangle), 3-pentanone (green square), 4-methyl-2-pentanone (blue circle), acetone (blue triangle), 3-methyl-2-butanone (blue square), 2-pentanone (blue diamond), butanone (blue cross), cyclopentanone (yellow circle), 2,4-dimethyl-3-pentanone (yellow square). CARBOB Reformulated Blend-stock for Oxygenate Blending formula mandated by the state of California
