Food and Fermentation Industries >

2022 , Vol. 48 >Issue 16: 175 - 181

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.028760

Preparation of high oxygen barrier protein-polysaccharide-kraft paper-based edible film composite material and its process optimization

  • WU Hao ,
  • LEI Qiao ,
  • CAO Qinglong ,
  • GAO Wenjing ,
  • WANG Zi
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  • 1(College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China)
    2(Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai 201306, China)
    3(Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China

Received date: 2021-07-23

  Revised date: 2021-08-23

  Online published: 2022-09-16

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Abstract

In this study, whey protein isolate-sodium caseinate-pullulan composite colloid was compounded with kraft paper to prepare high-barrier biodegradable food packaging materials to develop alternatives to plastic-coated paper. Taking the oxygen transmission rate of the product as the objective function, the influence of factors such as the volume ratio of the film-forming composite solution, the pH value, and the amount of glycerin added was analyzed, and the process was optimized by orthogonal experiments with three factors and three levels. The results showed that when the volume ratio of whey protein isolate-sodium caseinate to pullulan was 1∶2 at pH 9 and the glycerin content was 60%, the oxygen barrier performance of the composite coated paper was the best. The transmittance was as low as 3.824 cm3/(m2·24h·0.1MPa). In addition, its water vapor transmission coefficient was 9.241×10-12 g·cm/(cm2·s·Pa), and the water contact angle and oil contact angle were 69.9°, 48.4° respectively. Meanwhile, the transverse/longitudinal tensile strength was 13.894 MPa/24.731 MPa, the transverse/longitudinal elongation at break was 8.2%/6.6%, so its performance can meet the actual packaging application requirements.

Key words： composite material; whey protein isolate-sodium caseinate-pululan; pH; oxygen transmission rate

Cite this article

WU Hao , LEI Qiao , CAO Qinglong , GAO Wenjing , WANG Zi . Preparation of high oxygen barrier protein-polysaccharide-kraft paper-based edible film composite material and its process optimization[J]. Food and Fermentation Industries, 2022 , 48(16) : 175 -181 . DOI: 10.13995/j.cnki.11-1802/ts.028760

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