Abstract：
Here, Baijiu distillers\' grains (BDGs) were employed in biorefinery development to generate value-added co-products and bioethanol. Through ethyl acetate extraction at a 1:6 solid-liquid ratio for 10 h, significant results were achieved, including 100 % lactic acid and 92 % phenolics recovery. The remaining BDGs also achieved 99 % glucan recovery and 81 % glucan-to-glucose conversion. Simultaneous saccharification and fermentation of remaining BDGs at 30 % loading resulted in 78.5 g bioethanol/L with a yield of 94 %. The minimum selling price of bioethanol varies from $0.149-$0.836/kg, contingent on the co-product market prices. The biorefinery processing of one ton of BDGs caused a 60 % reduction in greenhouse gas emissions compared to that of the traditional production of 88 kg corn-lactic acid, 70 kg antioxidant phenolics, 234 kg soybean protein, and 225 kg corn-bioethanol, along with emissions from BDG landfilling. The biorefinery demonstrated a synergistic model of cost-effective bioethanol production and low-carbon emission BDGs treatment.
摘要：
这里,白酒酒糟（BDG）用于生物炼制开发，以产生增值的副产物和生物乙醇。通过乙酸乙酯以1:6的固液比萃取10小时，取得了重大成果，包括100%的乳酸和92%的酚类回收率。剩余的BDG还实现了99%的葡聚糖回收和81%的葡聚糖至葡萄糖转化。剩余BDG在30%载量下的同时糖化和发酵产生78.5g生物乙醇/L,产率为94%。生物乙醇的最低售价从0.149-0.836美元/公斤不等，视联产品市场价格而定。与传统生产88千克玉米乳酸相比，一吨BDGs的生物炼制加工导致温室气体排放量减少了60％，70公斤抗氧化剂酚类，234公斤大豆蛋白，和225公斤玉米生物乙醇，以及BDG垃圾填埋场的排放。生物精炼厂证明了具有成本效益的生物乙醇生产和低碳排放BDG处理的协同模型。
