کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10600405 | 982090 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Emulsion stabilizing properties of various chitosans in the presence of whey protein isolate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
The emulsion stabilizing potential of chitosans (CN) with various molecular weights and degrees of deacetylation (CNI=1494Â kDa, 78.1%DD; CNHI=694Â kDa, 78.5%DD; CNHI2=319Â kDa, 78.5%DD; CNHK=749Â kDa, 67.7%DD) was compared in the presence of whey protein isolate. Phase separation evolutions revealed minimal stabilizing concentrations against syneresis from 0.1 to 0.125% in most CN preparations, except CNHI2 where it was higher (0.225%). Those stabilizing concentrations are the result of interfacial coadsorption saturation of CN with proteins, favouring interfacial electrostatic and steric stabilizing mechanisms. The emulsion characteristics (droplet size, limiting low-shear viscosity, and surface net charge), mostly distinctive at 0.1%CN, revealed the following order of stabilizing potentials: CNIâCNHI>CNHK>CNHI2, which is in agreement with respective phase separation evolutions. The lower stabilizing potential of CNHI2 is explained by lower interfacial coadsorption efficiency with protein. In spite of a higher interfacial load of CNHK vs. CNI and CNHI, its lower stabilizing potential is essentially explained by a lower surface net charge.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 59, Issue 4, 15 March 2005, Pages 425-434
Journal: Carbohydrate Polymers - Volume 59, Issue 4, 15 March 2005, Pages 425-434
نویسندگان
Serge Laplante, Sylvie L. Turgeon, Paul Paquin,