Figure 8From: Preparation and characterization of nano liposomes of Orthosiphon stamineusethanolic extract in soybean phospholipidsPercentage cumulative release of OS liposomes (OS-L) and OS non-formulated extract (OS-E) at pH 6.8 and 37°C after 24 h. Concentration of released extract was determined by UV–vis spectrophotometry. The percentage cumulative release in non-formulated extract was 94% and reduced to 62% in the formulated extract.Back to article page