Microbiological evaluation of coated eggs with nanobiopolymer based on whey protein isolate
DOI:
https://doi.org/10.31416/rsdv.v6i2.113Keywords:
Coating, Biopolymer, Food safetyAbstract
Microbiological evaluation of coated eggs with nanobiopolymer based on whey protein isolate
Egg is an inexpensive and affordable protein food, but it is subject to microbiological contamination, posing a potential danger to consumers, especially if Salmonella is present. Fungi also represent a serious problem for egg quality and can lead to consumer rejection. Aiming to solve this problem, a coating based on Whey Protein Isolate (WPI) was developed with montmorillonite nanoparticles added of sodium metabisulfite as antimicrobial agent. The objective of this research was to evaluate the antimicrobial activity of the coating against Salmonella enterica Enteritidis, Aspergillus sydowii and Penicillium paxilli when applied on white eggs. There was no significant difference (p> 0.05) between the S. Enteritidis populations of the coated and uncoated egg shells. A. sydowii and P. paxilli showed growth in both uncoated and coated eggshells, evidencing that the coating was not able to inhibit them under the conditions tested. It is concluded that the coating developed shows no antimicrobial activity against Salmonella Enteritidis, Aspergillus sydowii and Penicillium paxilli under the conditions tested.
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