Plasticizer types affect quality and shelf life of eggs coated with rice protein.

Autor: Pires PGDS; 1Federal University of Rio Grande do Sul - UFRGS, Av. Bento Gonçalves 7712, Agronomia, Porto Alegre, RS 91540-000 Brazil., Bavaresco C; 2Faculdade de Agronomia Eliseu Maciel, Federal University of Pelotas - UFPel, Campus Capão do Leão, Av. Eliseu Maciel, s/n°, Capão do Leão, RS 96160-000 Brazil., Leuven AFR; 1Federal University of Rio Grande do Sul - UFRGS, Av. Bento Gonçalves 7712, Agronomia, Porto Alegre, RS 91540-000 Brazil., Gomes BCK; 1Federal University of Rio Grande do Sul - UFRGS, Av. Bento Gonçalves 7712, Agronomia, Porto Alegre, RS 91540-000 Brazil., de Souza AK; 1Federal University of Rio Grande do Sul - UFRGS, Av. Bento Gonçalves 7712, Agronomia, Porto Alegre, RS 91540-000 Brazil., Prato BS; 1Federal University of Rio Grande do Sul - UFRGS, Av. Bento Gonçalves 7712, Agronomia, Porto Alegre, RS 91540-000 Brazil., Kindlein L; 1Federal University of Rio Grande do Sul - UFRGS, Av. Bento Gonçalves 7712, Agronomia, Porto Alegre, RS 91540-000 Brazil., Andretta I; 1Federal University of Rio Grande do Sul - UFRGS, Av. Bento Gonçalves 7712, Agronomia, Porto Alegre, RS 91540-000 Brazil.
Jazyk: angličtina
Zdroj: Journal of food science and technology [J Food Sci Technol] 2020 Mar; Vol. 57 (3), pp. 971-979. Date of Electronic Publication: 2019 Nov 11.
DOI: 10.1007/s13197-019-04130-9
Abstrakt: The aim of study was evaluate the effect of using rice protein coating with different plasticizers types on the quality of eggs storaged at 20 °C for 6 weeks. Three hundred eggs were coated with rice protein at 8% solution combined with glycerol, propylene glycol or sorbitol. Uncoated eggs showed the highest weight loss (5.31%), while rice protein with glycerol (4.29%) propylene glycol (4.13%) and sorbitol (4.07%) solutions were effective in preventing weight lost. Uncoated eggs had the worst HU (58.40), albumen (9.52) and yolk (7.06) pH, and YI (0.33) after 6 weeks of storage. The eggs coated of rice protein with glycerol, propylene glycol and sorbitol presented results with similar intern quality between them during all the storage period. However, the use of sorbitol as a plasticizer in the coating is more efficient in maintaining control of the increase in albumen pH. Scanning electron microscopy demonstrated a lower surface porosity in coated eggshell, indicating that the use of the coating may provide a protective barrier against the transfer of gases and moisture. In conclusion, the best egg protection results in terms of egg quality are obtained in eggs coated with rice protein and sorbitol.
(© Association of Food Scientists & Technologists (India) 2019.)
Databáze: MEDLINE
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