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Preservation effect of chilled beef by coating with different polysaccharides

WANG Rui,KONG Baohua,XIA Xiufang,LIU Qian(Food College,Northeast Agricultural University,Harbin 150030,China)  
2% sodium alginate,chitosan solution or sodium carboxymethyl cellulose was used as film-forming materials to coat chilled beef.Total bacterium counts,TVB-N value,pH value and a* value were determined and used as the beef fresh keeping indicators.The results showed that at the end of the storage on the 16 d,beef coated with sodium alginate had better effects than chitosan solution or sodium carboxymethyl cellulose,and its pH was 6.2;TVB-N and the total bacterium counts were significant lower than chitosan solution or sodium carboxymethyl treatment,and still accorded with the requirements of national standards about fresh meat quality requirment.Totally,the sodium alginate film was the more suitable polysaccharide film on chilled beef coating preservation.
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