The discovery of bifunctional thiourea organocatalysts and their application in asymmetric reactions such as Michael reaction and Mannich reaction were reviewed in the paper.
综述了双功能有机硫脲催化剂的发现,及其在Michael加成反应、Mannich反应及其它不对称合成反应中的应用,并展望了其应用前景。
This paper investigated the chitosan specialty of a bifunctional enzyme,separated from cellulase with cellulase and chitosanase activities,by using TLC,HPLC,HPLC-MS.
采用HPLC、HPLC-MS及TLC等方法,研究了从纤维素酶中分离得到的既具有纤维素酶活又具有壳聚糖酶活———双功能酶的水解壳聚糖的专一性。
The product mainly secreted in the medium is a bifunctional enzyme with the optimal pH value and concentration of copper ion.
表达产物为双功能酶,分泌至培养基中的酶活力远高于胞内。