کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10543991 | 963562 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Random centroid optimization of phosphatidylglycerol stabilized lutein-enriched oil-in-water emulsions at acidic pH
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Lutein has been identified by various studies as a dietary compound that may help delay the onset of macular degeneration. Random centroid optimization was applied to design, prepare and characterize lutein-enriched oil-in-water (o/w) emulsions containing corn oil (15-25%), whey proteins (1.5-3.5%), phosphatidylglycerol (0.03-0.3%), KC1 (80-100 mM), lutein (0.025-0.031%), and pH at 3.8-4.8. After nine experiments in the first random cycle and four experiments in the centroid cycle, optimal conditions for the preparation of stable lutein-enriched oil-in-water emulsion were: corn oil, 20%; whey proteins, 2%; phosphatidylglycerol, 0.157%; KCl, 93.7 mM; lutein, 0.0282%, and pH 4.55. The half life stability, stability index, and zeta potential values for freshly prepared emulsions were higher when stabilized with phosphatidylglycerol than with phosphatidylcholine. Phosphatidylcholine-stabilized emulsions collapsed after heating at 90 °C for 5 min. Emulsion parameters for phosphatidylglycerol-stabilized emulsions heated at 90 °C for 5 min or stored at 4 °C for 24 h were not significantly different from values obtained with freshly prepared emulsions. Lutein remained stable in fresh and heat-treated emulsions. The potential of phosphatidylglycerol and lutein as health enhancing bioactive compounds is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 92, Issue 4, October 2005, Pages 737-744
Journal: Food Chemistry - Volume 92, Issue 4, October 2005, Pages 737-744
نویسندگان
Jack N. Losso, Armen Khachatryan, Masahiro Ogawa, J. Sam Godber, Fred Shih,