The Biofuels Digest Index, an index of publicly traded biofuels stocks, fell 0.57 percent to 62.88 as enzymes dropped. For the day, Gevo (GEVO) downshifted 8.04 percent to $2.86, while Biox (BX.T) shed 6.93 percent to $0.94. Among other equities, Solazyme (SZYM) recovered 1.92 percent to $2.93. Overall, declines led advances by a 9 to 7 ratio for the day.