食品科学 ›› 2019, Vol. 40 ›› Issue (21): 211-215.doi: 10.7506/spkx1002-6630-20181123-271

• 包装贮运 • 上一篇    下一篇

超临界溶液浸渍法制备丁香酚-壳聚糖食品活性包装膜

唐川,杨铭,卢轩   

  1. (大连大学生命科学与技术学院,辽宁 大连 116622)
  • 出版日期:2019-11-15 发布日期:2019-12-02
  • 基金资助:
    国家自然科学基金青年科学基金项目(21606030)

Preparation and Characterization of Eugenol-Chitosan Food Packaging Film through Supercritical Solution Impregnation

TANG Chuan, YANG Ming, LU Xuan   

  1. (College of Life Science and Technology, Dalian University, Dalian 116622, China)
  • Online:2019-11-15 Published:2019-12-02

摘要: 采用超临界溶液浸渍(supercritical solution impregnation,SSI)技术将丁香酚(eugenol,EG)负载于壳聚糖膜(chitosan film,CSF)中,制备用于食品活性包装的抑菌材料,分析SSI过程参数对丁香酚负载量的影响,并对EG-CSF的形貌、吸水量、水蒸气透过率和抑菌性能进行了考察。结果表明,EG-CSF的负载量随着浸渍压力的升高而增大,随着泄压速度的升高而降低,在压力20 MPa、泄压速率1 MPa/min时负载量达到最大,为6.02%。壳聚糖膜经SSI过程负载丁香酚后,吸水率和水蒸气透过率均下降。EG-CSF对金黄色葡萄球菌、绿脓假单胞菌、大肠杆菌均有较好的抑制作用,在食品活性包装领域具有应用潜力。

关键词: 超临界溶液浸渍, 丁香酚, 壳聚糖, 抑菌活性, 食品活性包装

Abstract: Supercritical solution impregnation (SSI) was employed to prepare eugenol (EG)-loaded chitosan film (CSF) for active food packaging. The effects of impregnation pressure and depressurization rate on the loading capacity (LC) of EG-CSF were investigated, and the properties of EG-CSF such as morphology, water uptake (WU), water vapor permeability (WVP), and antibacterial activity were characterized. The results showed that the LC increased with the elevation of impregnation pressure, but decreased with the increase of depressurization rate, and the maximum LC of 6.02% were achieved at 20 MPa and 1 MPa/min. The WU and WVP of EG-CSF decreased after undergoing the SSI process. EG-CSF had good antibacterial activity against Staphlycoccus aureus, Pseudomonas aeruginosa and Escherichia coli. The eugenol-loaded chitosan film prepared by SSI could be promising for application in active food packaging.

Key words: supercritical solution impregnation, eugenol, chitosan, antibacterial activity, active food packaging

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