FOOD SCIENCE

• Bioengineering • Previous Articles     Next Articles

Preparation and Characterization of Glucose Oxidase Liposomes

GUAN Huanan1,2, HAN Bolin1, NAO Amin1, WANG Xin1, XU Liping1, SUN Lu2   

  1. 1. College of Food Engineering, Harbin University of Commerce, Harbin 150076, China;
    2. Alkali Soil Natural Environmental Science Center, Northeast Forestry University, Harbin 150040, China
  • Online:2016-07-15 Published:2016-07-26

Abstract:

Egg phosphatidylcholine and cholesterol were used as coating materials to prepare glucose oxidase (GOD)
liposomes by a thin film evaporation-freezing thawing method. Single factor experiments and orthogonal array design
methods were used to optimize the preparation conditions based on encapsulation efficiency. The shape, stability and
particle size distribution of liposome-encapsulated glucose oxidase were systematically investigated. The optimal process
parameters were obtained as follows: mass ratio between egg phosphatidylcholine and cholesterol of 4:1, 5 mg (500 U) of
GOD, hydration time of 15 min, and 10 freezing-thawing cycles. The encapsulation efficiency of GOD liposomes was up to
(87.7 ± 2.1)%, with an average diameter of approximately (164.75 ± 2.55) μm under the optimized conditions. The encapsulation
efficiency did not significant change at 4 ℃ and room temperature (23.0 ± 0.5) ℃, and the activity of GOD remained stable.

Key words: glucose oxidase, liposome, stability, film evaporation-freezing thawing method, characterization

CLC Number: