生物转化天然香料β-苯乙醇过程中吸附介质的筛选及动力学研究
毕业论文关键词: 天然香料；β-苯乙醇；大孔吸附树脂；分离
Adsorption media screening and dynamics research during Biotransformation of natural perfume of β-phenylethanol
Abstract：Beta-phenethyl alcohol (β-PE) is the aromatic alcohols with a characteristic aroma of roses and daffodils.With the fragrances of natural process of development, as the second largest
perfume, the research of natural flavors β-PE becomes more and more important. Fermentation
product in situ separation is the focus of the whole research, which can not only reduce the cost
of separation and reduce inhibitory effect of the product.Macroporous adsorption resin is one of the most fastest growing technology in the field of production separation. Macroporous adsorpti
-on resin as a polymer has many advantages such as larger surface area, faster switching speeds,
being unable to pollute, good stability, being able to be resolved under the mild conditions, easy recycling and so on. At present, imported resin has been chosen in the macroporous adsorption resin separation process, which is expensive,even up to 1.5million each ton, causing the cost of whole β-PE separation is high. This paper studied the separation rate of homemade resins—— HZ816, CZ90, CZ722, CZ300, CZ100, BS-67-1,BS67-4, BS-80-6, BS-80-7 and imported resin
125. After the screening, the capacity of adsorption of the resin CZ90 reached 133mg/g, 34% higher than imported resin. In addition, its performance of adsorption, desorption and abrasion is better than 125. This study has a certain value to reduce the cost of β-PE in the separation
and purification.
Key Words：Natural flavors; 2-phenylethanol; Macroporous Adsorption Resin; Separation
目录
1前言 6
1.1苯乙醇的概述 6
1.1.1β-苯乙醇的性质 6
1.2 β-PE的合成方法 6
1.2.1化学法 6
1.2.2 物理法 7
1.2.3 生物转化法 7
1.3 分离β-PE的方法 8
1.3.1液–液萃取 8
1.3.2利用水–固相分隔生物反应器作为产物的原位分离技术 9
1.3.3超临界流体二氧化碳萃取 9
1.3.4溶剂固定化 9
1.3.5离子液体 9
1.3.6吸附剂进行吸附 9
1.4 大孔吸附树脂的概述 9
1.4.1大孔吸附树脂的性质 10
1.4.2大孔吸附树脂的分类 10
1.4.3大孔吸附树脂的吸附分离方式 11
1.4.4大孔吸附树脂的发展历程 11
1.4.5大孔吸附树脂的分离原理 11