کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7592504 1492113 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acetylation of barnyardgrass starch with acetic anhydride under iodine catalysis
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Acetylation of barnyardgrass starch with acetic anhydride under iodine catalysis
چکیده انگلیسی
Barnyardgrass (Echinochloa crus-galli) is an invasive plant that is difficult to control and is found in abundance as part of the waste of the paddy industry. In this study, barnyardgrass starch was extracted and studied to obtain a novel starch with potential food and non-food applications. We report some of the physicochemical, functional and morphological properties as well as the effect of modifying this starch with acetic anhydride by catalysis with 1, 5 or 10 mM of iodine. The extent of the introduction of acetyl groups increased with increasing iodine levels as catalyst. The shape of the granules remained unaltered, but there were low levels of surface corrosion and the overall relative crystallinity decreased. The pasting temperature, enthalpy and other gelatinisation temperatures were reduced by the modification. There was an increase in the viscosity of the pastes, except for the peak viscosity, which was strongly reduced in 10 mM iodine.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 178, 1 July 2015, Pages 236-242
نویسندگان
, , , , , ,