کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5157348 1500592 2017 30 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterizations of oil-in-water emulsion stabilized by different hydrophobic maize starches
ترجمه فارسی عنوان
خصوصیات امولسیون روغن در آب که توسط نشاسته های مختلف ذرت هیدروبهفیز تثبیت شده است
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موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
The molecular structure, rheological properties, microstructure and physical stability of oil-in-water emulsions using octenyl succinic-sugary maize soluble starch (OS-SMSS) were investigated and compared with two commercial OS-starches (HI-CAP 100 and Purity Gum 2000). The degree of substitution (DS), weight-average molecular weight (Mw) and z-root mean square radius of gyration (Rz) of OS-SMSS, HI-CAP 100 and Purity Gum 2000 were 0.0050, 223.4 × 105 g/mol and 38.8 nm, 0.0037, 9.6 × 105 g/mol and 29.3 nm, and 0.0031, 31.3 × 105 g/mol and 39.6 nm, respectively. FT-IR spectra showed two new absorption bands at 1725 and 1570 cm−1 from OS ester linkage in all tested samples. The emulsion with OS-SMSS exhibited a pseudoplastic behavior over the whole shear rate range, whereas other two emulsions showed a similar Newtonian fluid. All hydrophobic starch stabilized emulsions satisfied the Herschel-Bulkley model. All emulsions displayed storage modulus (G′) was higher than loss modulus (G″), and only G′ and G″ of OS-SMSS stabilized emulsion were independent of frequency. The volume-average droplet size (d43) value of emulsions stabilized by three modified starches was 27.9, 15.2 and 24.4 μm, respectively. During 4 weeks storage, lower change in d43 of emulsion with OS-SMSS was observed. The above results with schematic models of emulsions suggested that an emulsion with high stability could be prepared using 3% of OS-SMSS due to the formation of high density and thick nanoparticle layer at the interface, indicating OS-SMSS was a Pickering emulsion stabilizer for good long-term stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 166, 15 June 2017, Pages 195-201
نویسندگان
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