کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10547844 | 965375 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasound-assisted extraction of phenolic compounds from strawberries prior to liquid chromatographic separation and photodiode array ultraviolet detection
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Ultrasound-assisted extraction was used for the determination of phenolic compounds present in strawberries. The optimization study of the extraction was carried out using spiked samples (100Â mg/kg). The sample immersed in an aqueous solution containing hydrochloric acid (0.4Â M) was sonicated for 2Â min (duty cycle 0.2Â s, output amplitude 20% of the nominal amplitude of the converter, applied power 100Â W with the probe placed 1Â cm from the bottom of the water bath and 5Â cm from the walls of the precipitate glass). Subsequent separation was carried out by liquid chromatography (LC) with photodiode array UV detection. Calibration curves using the standard addition in green strawberries typically gave linear dynamic ranges of 2-300Â mg/l for all analytes; R2 values exceeded 0.996 in all cases. The method was applied to two types of strawberries to demonstrate the applicability of the proposed method, which is much faster and produces less analyte degradation than methods as solid-liquid, subcritical water and microwave-assisted extraction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1100, Issue 1, 23 December 2005, Pages 1-7
Journal: Journal of Chromatography A - Volume 1100, Issue 1, 23 December 2005, Pages 1-7
نویسندگان
M.C. Herrera, M.D. Luque de Castro,