کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7585254 1492036 2018 41 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An approach for degradation of grape seed and skin proanthocyanidin polymers into oligomers by sulphurous acid
ترجمه فارسی عنوان
یک رویکرد برای تخریب پلیمرهای پروانتوسایانیدین دانه و پوست به الیگومرها با اسید سولفوریک
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
To develop an efficient method for degradation of grape seed and skin proanthocyanidins polymers into oligomers, an optimized sulphurous acid degradation conditions for grape seed with the temperature of 60 °C, reaction time of 60 min and sample-sulphurous acid ratio of 1:0.2, and for grape skin with the temperature of 40 °C, reaction time of 60 min and sample-sulphurous acid ratio of 1:0.2, were established. Afterwards, HSCCC and prep-HPLC were used to fractionate and isolate individual proanthocyanidin oligomers from the degradation products. Total of ten dimeric or trimeric procyanidins were obtained, and most of them presented high yield (from 0.7 mg to 13.6 mg per run in grape seed and from 0.5 mg to 4.1 mg per run in grape skin) and high purity (over 90%). The proposed method provides a new way for large preparation of oligomeric proanthocyanidins from naturally abundant and wasted polymeric ones.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 256, 1 August 2018, Pages 203-211
نویسندگان
, , , , , ,