کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7790621 1500643 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of starch nanospheres through hydrophobic modification followed by initial water dialysis
ترجمه فارسی عنوان
تهیه نانوسپیرهای نشاسته از طریق اصلاح هیدروفوبیک و سپس دیالیز آب اولیه
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Starch nanospheres smaller than 200 nm were produced from hydrophobically modified starch by using initial water dialysis method. The hydrophobic modification of starch was performed by using octenyl succinic anhydride (OSA). The resultant starch nanospheres were characterized by using Fourier transformation infrared (FTIR) spectroscopy, 1H nuclear magnetic resonance (1H NMR) spectroscopy and fluorescence spectroscopy, scanning electron microscopy (SEM) and dynamic light scattering (DLS). Effects of degree of substitution (DS) in OSA-starch, initial water content and OSA-starch concentration on morphology and particle size of starch nanospheres were evaluated. The SEM micrographs showed that starch nanospheres with spherical shape and sharp edge can be produced at DS values ≧0.67. The particle size of starch nanospheres decreased significantly (P < 0.05) with increase in DS of OSA-starch and increase in the initial water content, whereas the particle size increased significantly (P < 0.05) with the increase in the concentration of OSA-starch. These OSA-starch nanospheres can be preferentially used to microencapsulate hydrophobic drugs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 115, 22 January 2015, Pages 605-612
نویسندگان
, , , , ,