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Citation: ZHANG Xiao-Ming, ZHU Liang-Kui, CHENG Lei, YUAN Bi-Zhen. Preparation and Release Behavior Analysis of Chitosan/Sodium Alginate/Porous Starch-Tea Tree Essential Oil Microcapsule[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(6): 862-868. doi: 10.19756/j.issn.0253-3820.181795 shu

Preparation and Release Behavior Analysis of Chitosan/Sodium Alginate/Porous Starch-Tea Tree Essential Oil Microcapsule

1.
School of Chemical Engineering and New Energy Materials, Zhuhai College of Jilin University, Zhuhai 519041, China;
2.
State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, China

Received Date: 22 December 2018

Fund Project: This work was supported by the Key Platforms and Major Projects of Guangdong Provincial Education Department (No.2017KTSCX212), the Innovation Ability Cultivation Project of Zhuhai College of Jilin University (No. 2017XJCQSQ031), and the Three Levels Talent Construction Project of Zhuhai College of Jilin University.

The microcapsules of chitosan/sodium alginate/porous starch-tea tree essential oil (CS/SA/PS-TTEO) were successfully prepared by polyelectrolyte complex coacervation method with PS as the core material carrier to adsorb TTEO, SA-CS as the wall material, and glutaraldehyde (GA) as crosslinker. The preparation conditions were optimized as follows. The optimum ratio of PS to TTEO was 0.88:1, the concentration of SA was 3.0%, the concentration of CS was 3.0%, the concentration of GA was 2.0%, and the reaction temperature was 30℃. The formation, properties and release behaviors of CS/SA/PS-TTEO microcapsules were analyzed by scanning electron microscope (TEM), thermogravimetry (TGA), Fourier transform infrared spectroscopy (FT-IR), stability test and release rate experiments. The results showed that in the open system, cumulative release rate of CS/SA/PS-TTEO microcapsules for 14 days was 15.77%, and the lowest release rate for a single day was 0.20%. In the closed system, the cumulative release rate of 14 days was 7.37%, and the release rate tended to be stable in about 10 days, with the lowest release rate of 0.04% in a single day, which proved that CS/SA/PS-TTEO microcapsules had the ability of slow release. CS/SA/PS-TTEO microcapsule was stable at -18℃ to 50℃ in the commonly used cosmetic solvent, and this property was beneficial to improve the stability of the storage and transport of cosmetics containing TTEO.
- Tea tree essential oil,
- Microcapsules,
- Condition optimization,
- Average particle size,
- Coating rate,
- Release rate
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