Department of Chemical & Biochemical Engineering, The University of Western Ontario, 1151 Richmond St., London, Ontario N6A 3K7, Canada.
Department of Chemical & Biochemical Engineering, The University of Western Ontario, 1151 Richmond St., London, Ontario N6A 3K7, Canada; Department of Biochemical Engineering, AVT - Aachener Verfahrenstechnik, RWTH Aachen University, Worringer Weg 1, 52074 Aachen, Germany.
Bioresour Technol. 2016 Apr;206:77-85. doi: 10.1016/j.biortech.2016.01.036. Epub 2016 Jan 30.
Lipid extracted algae (LEA) is an attractive feedstock for alcohol fuel production as it is a non-food crop which is largely composed of readily fermented carbohydrates like starch rather than the more recalcitrant lignocellulosic materials currently under intense development. This study compares the suitability of ionic liquid extracted algae (ILEA) and hexane extracted algae (HEA) for acetone, butanol, and ethanol (ABE) fermentation. The highest butanol titers (8.05 g L(-1)) were achieved with the fermentation of the acid hydrolysates of HEA, however, they required detoxification to support product formation after acid hydrolysis while ILEA did not. Direct ABE fermentation of ILEA and HEA (without detoxification) starches resulted in a butanol titer of 4.99 and 6.63 g L(-1), respectively, which significantly simplified the LEA to butanol process. The study demonstrated the compatibility of producing biodiesel and butanol from a single feedstock which may help reduce the feedstock costs of each individual process.
脂类提取藻类（LEA）是一种有吸引力的酒精燃料生产原料，因为它是非食用作物，主要由易于发酵的碳水化合物组成，如淀粉，而不是目前正在大力开发的更顽固的木质纤维素材料。本研究比较了离子液体提取藻类（ILEA）和己烷提取藻类（HEA）在丙酮、丁醇和乙醇（ABE）发酵中的适用性。通过对 HEA 的酸水解产物进行发酵，可获得最高的丁醇产量（8.05 g/L），但需要在酸水解后进行解毒以支持产物形成，而 ILEA 则不需要。ILEA 和 HEA 的直接 ABE 发酵（无需解毒）淀粉分别产生 4.99 和 6.63 g/L 的丁醇，这大大简化了 LEA 到丁醇的工艺。该研究表明，从单一原料生产生物柴油和丁醇是兼容的，这可能有助于降低每个单独工艺的原料成本。
