Abstract:

Two techniques for extn. and purifn. were used in order to obtain a purified saponins ext. from several sources (fenugreek, soybean, locust bean and sesame). The results indicate that fenugreek steroid saponins ext. has the best surface properties and reduces the surface tension to 33.3 mN/m and the tetradecane-water interfacial tension from 44 mN/m to 7.5 mN/m. The HLB value was 18. Three different types of oil (n-tetradecane, soybean oil, tricaprylin) were emulsified with a 6 wt% aq. soln. of saponins to give an av. droplet size of 0.7 $μ$m (stable after month). An effective synergism is seen when these emulsions were prepd. with sucrose fatty acid esters as co-surfactant. Foaming power was also evaluated. [on SciFinder(R)]