Roselle calyx (Hibiscus sabdariffa L.) were extracted with ethanol 70% (1:5) using the method of maceration with stirring for 1 hour, then left in place for up to 24 hours.
Roselle calyx (Hibiscus sabdariffa L.) were extracted with ethanol 70%(1:5) using the method of maceration with stirring for 1 hour, then left in place for up to 24 hours.