Food and Fermentation Industries >

2023 , Vol. 49 >Issue 8: 223 - 229

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.030675

Application of layer-by-layer alternating coating in egg preservation

  • YU Zedong ,
  • WANG Jing ,
  • REN Dan ,
  • WU Xiyu ,
  • XU Dan
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  • 1(College of Food Science, Southwest University, Chongqing 400715, China)
    2(Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, China)

Received date: 2022-01-01

  Revised date: 2022-02-28

  Online published: 2023-05-16

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Abstract

In this paper, chitosan (CS) and sodium carboxymethyl cellulose (CMC) were used to coat eggs layer-by-layer alternately, and the influences of coating times, coating thickness, and morphology on the storage quality of eggs were investigated. The changes in quality, thickness, and morphology of eggs and the control group were measured after 2, 4, and 6 times of alternating coating during storage. Results showed that the coating film on eggs with alternating coating 4 times (CS/CMC-4) had a maximum thickness of about 1.5-1.8 μm, which was stably attached to the eggshell surface. The sensory rating of CS/CMC-4 decreased after 49 days of storage and maintained a relatively stable egg white pH, as well as significantly higher values of Haugh unit and egg yolk index compared to other groups. Compared with the control group, the shelf life of CS/CMC-4 at room temperature was prolonged by at least 39 days. The storage quality of eggs coated 6 times and 2 times declined at a faster rate compared with that of CS/CMC-4 due to the uneven coating structure or smaller thickness, and the shelf life was prolonged by about 24 days and 16 days, respectively. Therefore, the application of layer-by-layer alternating coating could optimize the thickness and stability of the coating to significantly improve the storage and preservation effect of the coating on eggs and has a good application prospect in egg preservation.

Key words： alternating coating; coating thickness; micro-morphology; eggs; storage quality

Cite this article

YU Zedong , WANG Jing , REN Dan , WU Xiyu , XU Dan . Application of layer-by-layer alternating coating in egg preservation[J]. Food and Fermentation Industries, 2023 , 49(8) : 223 -229 . DOI: 10.13995/j.cnki.11-1802/ts.030675

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