Citronella oil (CO) can be an effective mosquito repellent, but due to its nature which having high volatility,\noils rapidly evaporates causing loss of efficacy and shorten the repellent effect. Therefore, microencapsulation\ntechnology was implemented to ensure the encapsulated material being protected from immediate contact with\nenvironment and offers controlled release. In this study, microencapsulation of CO was done by employing complex\ncoacervation using chitosan-gelatin (B) system and utilized proanthocyanidins as the crosslinker. Remarkably, nearly\nall material involved in this study are from natural sources which are safe to human and environment. In designing\noperating process condition for CO encapsulation process, we found that wall ratio of 1:35 and pH 5 was the best\noperating condition based on zeta potential and turbidity analysis. FT-IR analysis found that gelatin-B had coated the\nCO droplet during emulsification stage, chitosan started to interact with gelatin-B to form a polyelectrolyte complex\nin adjust pH stage, CO capsules solidified at cooling process and were hardened during crosslinking process. Final\nproduct of CO capsules after settling process was identified at the top layer. Surface morphology of CO capsules\nobtained in this study were described having diameter varies from 81.63 m to 156.74 m with almost spherical in\nshape.
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