JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 41 Issue 5
October 2026
Article Contents
Wang Xiaoli, Zhu Lifei, Li Huijuan, et al. Preparation and sustained release of chitosan-konjac glucomannan-based benzyl alcohol microcapsules[J]. Journal of Light Industry, 2026, 41(5): 50-58,142. doi: 10.12187/2026.05.005
Citation: Wang Xiaoli, Zhu Lifei, Li Huijuan, et al. Preparation and sustained release of chitosan-konjac glucomannan-based benzyl alcohol microcapsules[J]. Journal of Light Industry, 2026, 41(5): 50-58,142. doi: 10.12187/2026.05.005 shu

Preparation and sustained release of chitosan-konjac glucomannan-based benzyl alcohol microcapsules

  • Corresponding author: Li Lihong, snowwhite9527@sina.com
  • Received Date: 2026-01-15
    Accepted Date: 2026-03-25
  • 【Objective】This study aimed to improve the stability and sustained-release performance of benzyl alcohol.【Methods】Benzyl alcohol microcapsules were prepared using chitosan (CS) and konjac glucomannan (KGM) as composite wall materials. The preparation process was optimized by response surface methodology. The microcapsules were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy, and field-emission transmission electron microscopy (FETEM). The sustained-release performance was investigated using three kinetic models: first-order kinetics, Higuchi kinetics, and Peppas kinetics.【Results】Using KGM dosage, Tween 80 dosage, and sodium tripolyphosphate (STP) dosage as independent variables and the loading efficiency of benzyl alcohol microcapsules as the dependent variable, response surface methodology was applied to determine the optimal preparation conditions: KGM, 0.10 g; Tween 80, 0.25 mL; and STP, 0.50 g. Under these conditions, the loading efficiency of the benzyl alcohol microcapsules reached 16.95%. FTIR showed that the characteristic absorption peaks of benzyl alcohol, CS, and KGM appeared at 1040 cm-1, 2880 cm-1, and 874 cm-1, respectively, confirming that all three components were present in the microcapsule system. SEM and FETEM revealed that the microcapsules exhibited a spherical morphology with granular protrusions. At both room temperature (20 ℃) and high temperature (80 ℃), the microcapsules significantly reduced the volatilization loss of benzyl alcohol, and their sustained-release process followed first-order and Peppas kinetic equations.【Conclusion】The thermal stability and sustained-release performance of benzyl alcohol were significantly improved after microencapsulation.
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