کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1184428 1492110 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sorption of 4-ethylphenol and 4-ethylguaiacol by suberin from cork
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Sorption of 4-ethylphenol and 4-ethylguaiacol by suberin from cork
چکیده انگلیسی


• Suberin from cork is able to sorb volatile phenols from wine.
• The sorption level is correlated to hydrophobicity of the volatile.
• Its use under oenological conditions lead to a decrease in levels of 4-ethylphenol and 4-ethylguaiacol.

Cork shows an active role in the sorption of volatile phenols from wine. The sorption properties of 4-ethylphenol and 4-ethylguaiacol phenols in hydro-alcoholic medium placed in contact with suberin extracted from cork were especially investigated. To that purpose, suberin was immersed in model wine solutions containing several concentrations of each phenol and the amount of the compound remaining in the liquid phase was determined by SPME–GC–MS. Sorption isotherms of 4-ethylguaiacol and 4-ethylphenol by suberin followed the Henry’s model. The solid/liquid partition coefficients (KSL) between the suberin and the model wine were also determined for several other volatile phenols. Suberin displayed rather high sorption capacity, which was positively correlated to the hydrophobicity of the volatile. Finally, the capacity of suberin to decrease the concentration of 4-ethylphenol and 4-ethylguaiacol was also tested in real wines affected by a Brettanomyces character. It also lead to a significant reduction of their concentration in wine.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 181, 15 August 2015, Pages 222–226
نویسندگان
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