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The study of dilute sulfuric acid hydrolysis process of fresh Ulva prolifera for reducing sugars yield
Authors
冯大伟
姜鹏
+4 more
李富超
秦松
赵瑾
陈华新
Publication date
1 January 2014
Publisher
Abstract
分别用质量分数为0.6%、1.0%、1.4%、1.8%、2.2%的稀硫酸在121℃高温高压的条件下水解鲜浒苔30、60、90 min,浒苔水解残留物再用纤维素酶酶解,用DNS法测定上述各步骤中的还原糖产量。结果表明,浒苔总糖含量为67.2%。稀硫酸水解工艺中,硫酸质量分数为1.8%、水解90 min,浒苔还原糖转化率最高,达59.9%,每克干质量浒苔可产生447.0 mg还原糖。稀硫酸水解残留物纤维素酶酶解工艺中,浒苔还原糖转化率较低,在硫酸质量分数为0.6%、水解时间为60 min时还原糖转化率出现最大值,仅为6.5%。结果显示浒苔稀硫酸水解产还原糖效果显著,但并不能促进纤维素酶酶解。浒苔糖化可单独采用稀硫酸水解工艺,本实验条件下的最佳工艺条件为1.8%硫酸水解90 min。本研究探索了浒苔糖化工艺条件,对后续的浒苔燃料乙醇发酵研究具有一定的参考意义
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Last time updated on 29/11/2016