Winemakers have long known that blending different grape varietals can favorably balance the flavor characteristics of the wine they produce. In the future, makers of advanced biofuels might use a similar strategy, blending different feedstock varieties to balance the energy characteristics of the transportation fuel they produce.
Follow this link to learn more: http://biomassmagazine.com/articles/8595/researchers-use-ionic-liquid-to-pretreat-biofuel-feedstock-mix