کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1209476 | 1493757 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of diastereomerization barrier of some flavanones by high-performance liquid chromatography methods
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
The rate constants and activation energy barriers ΔG# of diastereomerization reaction of flavanones: naringin, narirutin, hesperidin and neohesperidin were determined. The stopped-flow HPLC (SFM-HPLC), dynamic HPLC (D-HPLC) and enantioselective HPLC combined with the classical kinetic method were applied for determination of these parameters. It was found that the rate constants of diastereomerization were about eight times higher for naringin and narirutin (1.9 × 10−5 s−1) than for hesperidin and neohesperidin (2.4 × 10−6 s−1). No significant differences in the rate of diastereomerization were found between neohesperidosides and corresponding rutinosides.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1134, Issues 1–2, 17 November 2006, Pages 95–100
Journal: Journal of Chromatography A - Volume 1134, Issues 1–2, 17 November 2006, Pages 95–100
نویسندگان
Monika Asztemborska, Janusz Żukowski,