Carboxymethyl chitosan grafted with ricinoleic acid (CMC-g-RA), an amphiphilic drug carrier, was synthetized, loaded with rotenone (Rot), and characterized for particles shape, zeta potential, loading efficiency and outdoor stability. Results show that as the ratio of carrier to drug increased, the formulation exhibited monodisperse nanoparticles negative surface charge. The loading efficiency of the formulation was up to 68%. The outdoor test also indicated that the formulation with the higher loading efficiency prevented Rot degradation in natural environments.
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Feng et al. (2016) studied this question.
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