کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10528715 | 960722 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimisation of a pressurised liquid extraction method for haloanisoles in cork stoppers
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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
Cork taint is a musty off-flavour in wines mainly caused by 2,4,6-trichloroanisole, but other haloanisoles can contribute. In this work, a method for the extraction of 2,4,6-trichloroanisole, 2,4,6-tribromoanisole and 2,6-dichloroanisole has been developed. The procedure involves the extraction of the haloanisoles from cork by pressurised liquid extraction and the analysis of the extracts by both GC-μECD and GC-MS-MS. A central composite design was used to investigate the dependence of the recoveries of the analytes on the temperature, percentage pentane-diethyl ether ratio and the extraction time. Experimental data were then processed by using the multiple regression analysis in order to calculate a mathematical model representing the relationship between factors and responses and to determine the best experimental conditions for PLE method. These conditions corresponded to a temperature of 176 °C, an extraction time between 2.8 and 4 min and an 80:20 pentane:diethyl ether ratio.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 540, Issue 1, 17 May 2005, Pages 17-24
Journal: Analytica Chimica Acta - Volume 540, Issue 1, 17 May 2005, Pages 17-24
نویسندگان
J.L. Gómez-Ariza, T. GarcÃa-Barrera, F. Lorenzo, A. Gustavo González,