تفاعل #2021
ord-51173d9d709c45cdbf8cf8891134c0bf
معادلة التفاعل
المتفاعلات
الكواشف
ظروف التفاعل
المعالجة
- 1أخرىwhich are particularly well adapted to the crystallization of xylitol
الإجراء التجريبي
It is known from European Patent No. 421,882, of which the Applicant is proprietor, to obtain xylitol syrups having a xylitol content of 80% to 90%, the remainder being essentially composed of D-arabitol, pentitol of the natural D series of sugars. These syrups, which are not very viscous and which are particularly well adapted to the crystallization of xylitol, are obtained by microbiological conversion of glucose to D-arabitol, microbiological oxidation of D-arabitol, to D-xylulose, enzymatic isomerization of D-xylulose to D-xylose and then catalytic hydrogenation of the mixture of D-xylulose and D-xylose to xylitol and D-arabitol. These xylitol syrups, which do not contain L-arabitol or galactitol but only D-arabitol as accompanying polyol, permit easy extraction of three crops of pure xylitol crystals.