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
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Determination of diastereomerization barrier of some flavanones by high-performance liquid chromatography methods
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
نویسندگان
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