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OALib Journal期刊
ISSN: 2333-9721
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鲜甘薯原料的运动发酵单胞菌快速乙醇发酵条件
DOI: 10.3724/SP.J.1145.2009.00405, PP. 405-409
Keywords: 鲜甘薯,运动发酵单胞菌,同步糖化发酵,乙醇发酵
Abstract:
摘要对运动发酵单胞菌232b同步糖化发酵(ssf)鲜甘薯快速生产燃料乙醇的条件进行了研究.通过单因素试验和正交试验获得了乙醇发酵的最佳参数为：初始ph值6.0~7.0，硫酸铵5.0g/kg，糖化酶量1.6aug/kg淀粉，初始总糖浓度200g/kg，接种量φ=12.5%.经过21h发酵，乙醇浓度为95.15g/kg，发酵效率可达94%.同时对不灭菌发酵也进行了研究，发酵效率可达92%.残糖的hplc分析结果说明，发酵液中已没有葡萄糖存在，经酸水解后又出现了葡萄糖、半乳糖、甘露糖等成分，说明发酵结束后的残糖是多种低聚糖.图4表4参19
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