摘要:本课题研究的目的是探究最适合苯乙酮纳米乳液完成催化还原的菌种和最适合的优化环境。围绕最适菌种这个小课题,我们选取了酵母菌、黑曲霉、杏鲍菇、乳酸菌和大肠杆菌这五类菌种作参考。每一次加入菌种的数量以及其他外界条件均相同,这样通过彼此间的相互对照,可以得出较为准确的实验结论。从这五种菌种间选取最适反应菌种,进行其他环境的优化实验,改变某一条件,其他条件不变,不难可以得出最优实验进行的外界环境。本课题的意义在于多次重复实验,善于通过控制变量得出较为理想的实验结论,能够有效控制偏差、误差,组织实验数据,让实验结果更加令人信服。同时将之运用在生产苯乙醇这种较为常用的香料上,能够提高生产效率,从而提高产率。32070
毕业论文关键词:苯乙酮;酵母菌;纳米乳液;生物催化
Biocatalytic reduction of acetophenone nanoemulsion
Abstract: The purpose of this research is to explore the most appropriate acetophenone nanoemulsion complete catalytic reduction of bacteria and optimize the most suitable environment. Optimum strain around this little issue, we selected yeasts, Aspergillus niger, mushroom, these five strains of lactic acid bacteria and E. coli as a reference. Each time the number of added bacteria and other external conditions are the same, so by cross-reference each other, you can arrive at a more accurate test results. Select from among five species optimum strains, optimization experiments and other environmental change certain conditions, the other conditions remain unchanged, the external environment is not difficult to be able to draw the best experiments carried out. Significance of this issue lies in repeated experiments, good results by controlling the variable ideal experimental results, it can effectively control the deviation, error, organize experimental data, make results more convincing. While it used in the production of benzene into ethanol which is more commonly used spices that can increase productivity, thereby improving yield.
Key Word: Acetophenone;Biocatalysis; nanoemulsion; yeast
目 录
1 前言 1
1.1苯乙酮的特点及特性 1
1.2纳米乳液的制备与作用 1
1.3苯乙酮生物催化还原现状 3
1.4 本课题研究的目的与意义 3
1.5本实验的相关扩展研究 4
2 实验方法与内容 5
2.1实验方法 5
2.1.1菌种的筛选 5
2.1.2苯乙酮纳米乳液的配制 6
2.1.3菌种的活化及筛选 6
2.1.4苯乙酮的还原及菌种的筛选 7
2.2 实验内容 7
2.2.1菌种的扩大培养 7
2.2.2纳米乳液的制备 8
2.2.3离心 8
2.2.4注射苯乙酮 8
3实验结果与讨论 9
3.1筛选菌种 9
3.2α-苯乙酮的标准曲线 9
4结论与分析 13
致谢 19
参考文献 20
1 前言
1.1苯乙酮的特点及特性
无色晶体,或浅黄色油状液体。有山楂的气。为强氧化剂、强酸。不溶于水,易溶于多数有机溶剂,不溶于甘油。能与蒸气一起挥发,氧化时可以生成苯甲酸;还原时可生成乙苯,完全加氢时生成乙基环己烷。用于制香皂和香烟,也用作纤文素酯和树脂等的溶剂和塑料工业生产中的增塑剂等。可由苯与乙酸酐反应制得,或由乙苯氧化制得,也可用乙酰氯与苯在三氯化铝作用下经傅氏反应制得。
用于制造香皂和纸烟。也用作有机化学合成的中间体、纤文树脂等的溶剂和塑料的增塑剂。用于调配樱桃、见过、番茄、草莓、杏等食用香精,也可用于烟用香精中。在最终加香食品中的建议用量为0.6~20mg/kg。 苯乙酮纳米乳液的生物催化还原:http://www.youerw.com/huaxue/lunwen_28476.html