[关键词]
[摘要]
酶作为-种生物催化剂,在适宜的条件下,其催化反应的速度是-般化学催化剂无法比拟的,而且它还具有反应条件温和、有利于简化设备、改善劳动条件和降低成本等优点.但是当酶被提取到细胞外后,其分子构象会发生改变,使生物学活性和稳定性都大为降低.超声波作为-种物理能在低强度及适宜的频率条件下,能够使酶分子的构象正向转化,从而提高酶的活性,加快酶转化反应速度,有利于中药与天然产物中有效成分的转化.
[Key word]
[Abstract]
The enzyme,as a biocatalyst,can not be surpassed in speeding up the reactions by other common chemical catalysts under the suitable conditions and can catalyze the reaction mildly,simplify the facilities needed,improve the work conditions,and reduce the production costs,etc.Those are its advantages mentioned above.But while the enzyme is extracted outside the cells,the molecular conformation may be changed with decreasing its bioactivity and stability seriously.As one type of physical energy,ultrasonic wave with lower intensity and suitable frequency can make the conformation of enzymatic molecular comformation transform positively and the transforming reacti-ons accelerate SO as to facilitate the effective constituents of Chinese materia medica and natural products transforming.
[中图分类号]
[基金项目]