高温水分散体系交联马铃薯淀粉的非晶化现象研究

【摘要】 研究了用三偏磷酸钠为交联剂高交联马铃薯淀粉的制备方法,采用偏光显微镜和广角X-射线衍射对交联马铃薯淀粉由多晶态向非晶态的渐变过程进行了详细报道发现了随着温度的升高交联马铃薯淀粉逐渐非晶化现象,提出在高温条件下交联马铃薯淀粉存在着只含无定型结构的非晶颗粒态,并用扫描电镜对非晶颗粒态马铃薯淀粉的结构进行了详细研究。更多还原

【Abstract】 With sodium trimetaphosphate as cross-linking agent, the highly cross-linked corn starches were prepared. Using thepolarized light microscope and X-ray analytical method, the process gradually changing from polycrystallization tononcrystallization was investigated in detail.Noncrystallization of cross-linked corn starches was found with increasing temperature.The polarization microscopy and X-ray diffraction data suggested that the cross-linking corn only existed in the non-crystallizedgranules state in high temperature.A furthermore study on the structure characteristics of potato starch with non-crystallizedgranule state was reported by SEM.更多还原