کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10600422 | 982090 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical modification of Cassia occidentalis seed gum: carbamoylethylation
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Chemical modification of Cassia occidentalis seed gum: carbamoylethylation Chemical modification of Cassia occidentalis seed gum: carbamoylethylation](/preview/png/10600422.png)
چکیده انگلیسی
The seeds of Cassia occidentalis, an annual weed occurring throughout India, is a rich source of galactomannan gum. The gum derived from seed endosperm can be potentially utilized in a number of industries to replace the conventional gums. With a view to utilize the gum for broader applications, carbamoylethylation of C. occidentalis seed gum was carried out with acrylamide in presence of sodium hydroxide under different reaction conditions. Variables studied were concentration of sodium hydroxide, acrylamide, gum-solvent ratio, reaction time and temperature. The nitrogen content, carboxyl content and total ether content were determined. The optimum condition for preparing carbamoylethyl C. occidentalis seed gum (%N=2.57) comprised concentration of acrylamide (0.070 mol), sodium hydroxide (0.125 mol), C. occidentalis seed gum (0.03 mol) at 30 °C for 3 h. Rheological properties of carbamoylethyl C. occidentalis seed gum solution showed non-Newtonian pseudo-plastic behavior, relatively high viscosity, cold water solubility and solution clarity vis-à -vis unmodified C. occidentalis seed gum.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 59, Issue 4, 15 March 2005, Pages 501-506
Journal: Carbohydrate Polymers - Volume 59, Issue 4, 15 March 2005, Pages 501-506
نویسندگان
Sarika Gupta, Pradeep Sharma, P.L. Soni,