D-arabitol,a naturally occurring five-carbonpolyalcohol presenting in lichens and mushrooms[1],isused as sweetener and pharmaceutical intermediate[2-4],as the product of osmophilic yeasts corresponding toosmotic pressure[5],and most specially,as a precursor forbiosynthesizing xylitol[6],widely used as anticariogenicsweetener and low-calories sugar substitute[7].Suzuki et al.isolated a Gluconobacter oxydansstrain for converting D-arabitol to xylitol with a weightyield of xylitol fr......(论文页数是：8页) ，阿拉伯语毕业论文，阿拉伯语论文题目 |
