Abstract
The mechanism of reactive extraction of rosmarinic acid with Amberlite LA-2 (secondary amine) and D2EHPA (organophosphoric acid) was analyzed for three solvents with different polarities (n-heptane, n-butyl acetate, dichloromethane), with or without 1-octanol. Thus, in the absence of 1-octanol, the stoichiometric ratio between the rosmarinic acid and Amberlite LA-2 was 1:1 for dichloromethane, 1:2 for butyl acetate, and 1:4 for n-heptane. In the presence of 1-octanol, the formation of aminic adducts is restricted, and the structures of the interfacial complexes reflect the following stoichiometries for the interfacial reaction between the solute and Amberlite LA-2: 1:1 for dichloromethane and butyl acetate and 1:2 for n-heptane. However, regardless of 1-octanol addition to the organic phase, the extraction of rosmarinic acid with D2EHPA occurred only through the formation of an interfacial compound containing one acid molecule and two molecules of extractant for all considered solvents. In the case of rea...
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
