کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4909218 1427107 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diffusion of tocopherols, phospholipids and sugars during oil extraction from sunflower collets using ethanol as solvent
ترجمه فارسی عنوان
پخش توکوفرول ها، فسفولیپید ها و قندها در طول استخراج روغن از آفتابگردان با استفاده از اتانول به عنوان حلال
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
The ethanolic extraction of minor compounds (phospholipids, tocopherols and sugars) present in sunflower collets was studied at 50 and 60 °C in a batch reactor. The extracted material consisted of two phases: a hexane-soluble fraction, comparable to degummed sunflower oils, and a hexane-insoluble fraction high in phospholipids and sugars. Sugars were extracted in large proportion, especially the indigestible raffinose, increasing the nutritional value of the meal. The sugar reduction percentage in the sunflower collets increased over extraction time to up to 60 and 80% at 50 and 60 °C. The effective diffusion coefficient (De) for tocopherols was higher than that for phospholipids (3.950 10−9 and 2.596 10−9 m2/s, respectively), both being temperature-independent in the analyzed range. De of sugars was 6.50 10−10 and 1.51 10−9 m2/s for 50 and 60 °C, respectively. Using ethanol as extraction solvent could improve the oil and meal quality, and help obtain a third phospholipid-rich phase after fractionation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 194, February 2017, Pages 1-8
نویسندگان
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