摘要
以芋头淀粉为原料、过氧化氢为氧化剂,在碱性介质中制备了低氧化度芋头淀粉。经扫描电镜分析,氧化芋头淀粉颗粒呈多角状,平均颗粒直径18.09μm。X-射线衍射确定其晶体形貌为A型结构。流变学分析其糊化温度为79.5℃、特性粘度为2.505 Pa.s,粘弹性曲线显示其粘性大于弹性。其塑性测定结果符合Croass模型,稠度指数为85.56 s。
Using taro starch as raw material and H2O2 as oxidant,oxygenation taro starch with low oxidation degree was synthesized in basic medium. SEM analysis showed that the obtained particles were multiangular and the mean particle size was 18.09 μm. The X-ray diffraction pattern showed the morphological structure of the oxygenation taro starch crystal was A type. Its gelatination point and intrinsic viscosity were found to be 79.5℃ ,2. 505 Pa· s respectively by rheology analysis. The visco-elastic curve indicated that its viscosity was higher than its elasticity. The plastic determination result was in accordance with Croass model and the consistency index was 85.56 s.
出处
《化学与生物工程》
CAS
2010年第1期86-88,共3页
Chemistry & Bioengineering
关键词
氧化芋头淀粉
过氧化氢
理化性质
oxygenation taro starch
hydrogen peroxide
physical and chemical property
