Characterization of sodium starch glycolate prepared using reactive extrusion and its comparisons with a commercial brand VIVASTAR^庐P

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• 作者：Pratik N. Bhandari^a ; ^{pbhandari2@unl.edu} ; David D. Jones^b ; ^{djones1@unl.edu} ; Milford A. Hanna^c ; ^{mhanna@unlnotes.unl.edu} ; ^{mhanna1@unl.edu}
• 关键词：Sodium starch glycolate ; Reactive extrusion ; Super-disintegrants ; VIVASTARP ; Pharmaceutical excipients
• 刊名：Industrial Crops and Products
• 出版年：2013
• 期刊代码：56_09266690
• 类别：abs
• 出版时间：January, 2013
• 卷：41
• 期：Complete
• 页码：324-330
• 文件大小：694 K

摘要

Reactive extrusion is a popular technique for chemical modification of starches. In this study, the physical, chemical and morphological properties of sodium starch glycolate, prepared using reactive extrusion (SSG), were compared with those of VIVASTAR^庐P. As measured by sieve analysis, VIVASTAR^庐P had a larger weight fraction in the particle size range of 0-38 渭m compared to SSG. The sodium assays of VIVASTAR^庐P and its particle size fractions (0-38 渭m and 38-75 渭m) were found to be significantly lower than those of SSG and its particle size fractions (0-38 渭m, 38-75 渭m and 75-106 渭m). The NaCl content, pH, settling volume, bulk density, tap density and Carr index for VIVASTAR^庐P and SSG were measured. X-ray diffraction patterns indicated substantial loss of crystallinity of starch in both VIVASTAR^庐P and SSG. The water uptakes of the 0-38 渭m and 38-75 渭m fractions of VIVASTAR^庐P, measured at 20 and 180 s, were significantly higher than those for the 0-38 渭m and 38-75 渭m fractions of SSG. However, no differences were found between the water uptakes of both the VIVASTAR^庐P fractions and the 75-106 渭m fraction of SSG at 20 s. However, the water uptake of the SSG 75-106 渭m fraction leveled off as time progressed. When, 0.1 N HCl was used, at an interval of 20 s, the SSG 75-106 渭m and 38-75 渭m fractions had significantly higher liquid uptake than VIVASTAR^庐P and its 0-38 渭m fraction. However, no significant differences were found between the liquid uptakes of the SSG 75-106 渭m and 38-75 渭m fractions and the VIVASTAR^庐P 38-75 渭m fraction. After a time interval of 180 s, the liquid uptakes of the SSG 75-106 渭m and 38-75 渭m fractions were significantly lower than those for VIVASTAR^庐P and its 0-38 渭m fraction. The liquid uptake of the VIVASTAR^庐P 38-75 渭m fraction was higher than that of the SSG 38-75 渭m fraction but not significantly different from the SSG 75-106 渭m fraction. The microstructure of VIVASTAR^庐P revealed the presence of spherical and ovoid shaped particles with smooth surfaces. This was in contrast with the irregular shaped particles of SSG with jagged surfaces.