Abstract
The authors present the 1st results of enzymic activities in a reverse microemulsion medium based on a mixt. of an anionic and a cationic surfactant, called a catanionic microemulsion. The studied system was composed of SDS/dodecyltrimethylammonium bromide (DTAB)/n-hexanol/citrate buffer/n-dodecane, with high SDS/(SDS + DTAB) wt. fractions. The results were similar to those obtained in ...
Abstract
The authors present the 1st results of enzymic activities in a reverse microemulsion medium based on a mixt. of an anionic and a cationic surfactant, called a catanionic microemulsion. The studied system was composed of SDS/dodecyltrimethylammonium bromide (DTAB)/n-hexanol/citrate buffer/n-dodecane, with high SDS/(SDS + DTAB) wt. fractions. The results were similar to those obtained in classical reverse microemulsions, except that the presence of DTAB exerted an inhibiting effect on the enzyme. Nevertheless, enzymic superactivities were found even at a DTAB-to-total surfactant ratio of 15%, corresponding to a 3% wt. fraction of cationic surfactant in the microemulsion. The influence of pH and hexanol content on the enzymic activity was also studied.
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