Encapsulation of Volatile Citronella Essential Oil by Coacervation: Efficiency and Release Study

3rd International Conference on Global Sustainability and Chemical Engineering

工业技术;化学工业

Manaf, M.A.^1 ; Subuki, I.^1 ; Jai, J.^1 ; Raslan, R.^1 ; Mustapa, A.N.^1

Faculty of Chemical Engineering, Universiti Teknologi MARA, Selangor, Shah Alam

40450, Malaysia^1

关键词: Complex coacervation;    Cross linking agents;    Encapsulation efficiency;    Glutaraldehydes;    Polymeric systems;    Release kinetics;    Standard calibration;    Wall materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/358/1/012072/pdf
DOI  :  10.1088/1757-899X/358/1/012072

学科分类：工业工程学

来源: IOP

【 摘 要 】

The volatile citronella essential oil was encapsulated by simple coacervation and complex coacervation using Arabic gum and gelatin as wall material. Glutaraldehyde was used in the methodology as crosslinking agent. The citronella standard calibration graph obtained with R2 of 0.9523 was used for the accurate determination of encapsulation efficiency and release study. The release kinetic was analysed based on Fick»s law of diffusion for polymeric system and linear graph of Log fraction release over Log time was constructed to determine the release rate constant, k and diffusion coefficient, n. Both coacervation methods in the present study produce encapsulation efficiency around 94%. The produced capsules for both coacervation processes were discussed based on the capsules morphology and release kinetic mechanisms.