کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7590519 1492103 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solubility and thermodynamic behavior of vanillin in propane-1,2-diol + water cosolvent mixtures at different temperatures
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Solubility and thermodynamic behavior of vanillin in propane-1,2-diol + water cosolvent mixtures at different temperatures
چکیده انگلیسی
The solubilities of bioactive compound vanillin were measured in various propane-1,2-diol + water cosolvent mixtures at T = (298-318) K and p = 0.1 MPa. The experimental solubility of crystalline vanillin was determined and correlated with calculated solubility. The results showed good correlation of experimental solubilities of crystalline vanillin with calculated ones. The mole fraction solubility of crystalline vanillin was recorded highest in pure propane-1,2-diol (7.06 × 10−2 at 298 K) and lowest in pure water (1.25 × 10−3 at 298 K) over the entire temperature range investigated. Thermodynamic behavior of vanillin in various propane-1,2-diol + water cosolvent mixtures was evaluated by Van't Hoff and Krug analysis. The results showed an endothermic, spontaneous and an entropy-driven dissolution of crystalline vanillin in all propane-1,2-diol + water cosolvent mixtures. Based on solubility data of this work, vanillin has been considered as soluble in water and freely soluble in propane-1,2-diol.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 188, 1 December 2015, Pages 57-61
نویسندگان
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