کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9488174 | 1330979 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics on sucrose decomposition in subcritical water
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش تغذیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The kinetics of the sucrose decomposition in subcritical water was investigated using a flow-type reactor in the temperature range of 160-200âC and at a constant pressure of 10Â MPa. The decrease in pH during the decomposition was linearly related to the logarithm of the conversion and significantly affected the decomposition rate. The sucrose decomposition was expressed by a kinetic equation of the autocatalytic type, where the decomposition rate of sucrose was proportional to the product of the concentrations of the remaining sucrose and acidic compounds, the most of which originated from the reacted sucrose. The equation was applicable to the sucrose decomposition at its feed concentrations from 5-250Â g/l and at different pHs. The conversion of sucrose to glucose and fructose almost stoichiometrically proceeded in the stated temperature range. It was also indicated that the pH of the reaction mixture played an important role in the sucrose decomposition in subcritical water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: LWT - Food Science and Technology - Volume 38, Issue 3, May 2005, Pages 297-302
Journal: LWT - Food Science and Technology - Volume 38, Issue 3, May 2005, Pages 297-302
نویسندگان
Shabnam Haghighat Khajavi, Yukitaka Kimura, Toshinobu Oomori, Ryuichi Matsuno, Shuji Adachi,