کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7594238 1492119 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Over-evaluation of total flavonoids in grape skin extracts containing sulphur dioxide
ترجمه فارسی عنوان
بیش از حد ارزیابی کل فلاونوئیدها در عصاره انگور پوست حاوی دی اکسید گوگرد
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Sulphur dioxide (SO2) proved to increase absorbance at 280 nm of grape skin and seed extracts containing it, diluted with ethanol-HCl to assess total flavonoids and anthocyanins in the same analysis. Additional absorbance at 280 nm was also observed in acetone:H2O extracts, if the acetone had not completely evaporated before the extracts were diluted with a solvent. Flavonoids were correctly quantified in the extracts when SO2 or acetone were removed by solid-phase extraction with a C18 RP as sorbent and methanol as eluting solvent.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 172, 1 April 2015, Pages 537-542
نویسندگان
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