Under these conditions, it is possible to quickly obtain carboxymethyl potato starch with higher degree of substitution and viscosity.
在此条件下可以快速获得较高取代度和粘度的羧甲基马铃薯淀粉。
Higher feed ratio could lead to higher loading capacity and lower encapsulation efficiency under the same degree of substitution of cholesteryl moiety and molecular weights of parent pullulan.
当取代度和相对分子质量相同时，随着投料比的增加，载药量增加而包封率降低。
X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.
对烷基化壳聚糖进行X射线光电子能谱分析表明，随着卤代烷试剂反应活性的增高，发生在壳聚糖羟基上的烷基取代反应增多。
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