کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7597170 | 1492131 | 2014 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The batch adsorption of the epigallocatechin gallate onto apple pomace
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The ability of apple pomace for carrying a polyphenol (epigallocatechin-3-gallate, EGCG) was examined. The adsorption characteristics of epigallocatechin gallate onto apple pomace from aqueous solution were determined over a range of concentrations (25-600 mg/L) and temperatures (25, 40 and 55 °C). The adsorption of EGCG decreased with increasing temperature. Both the Langmuir and Freundlich models adequately describe the isothermal adsorption of EGCG onto apple pomace. The Gibbs free energy change (ÎG°) for the adsorption of EGCG onto apple pomace ranged from â15.90 to â22.98 kJ/mol over the temperature range 25-55 °C, indicating the adsorption of EGCG onto apple pomace is a spontaneous process, and further that the adsorption process is likely to be dominated by a physisorption mechanism. Our results show that apple pomace has good adsorption characteristics, suggesting that apple pomace may be a useful EGCG carrier for functional food applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 160, 1 October 2014, Pages 260-265
Journal: Food Chemistry - Volume 160, 1 October 2014, Pages 260-265
نویسندگان
Liangyu Wu, Laurence D. Melton, Luz Sanguansri, Mary Ann Augustin,