Abstract
The effect of two modified atmosphere (MA) conditions (80% CO2 : 20% N2 and 60% CO2 : 40% N2) on the shelf life of grouper fillets (Epinephelus sp.) stored at refrigeration temperature (2 ± 2 oC) were studied. Chemical and microbiological changes, and sensory alterations were monitored. Values were compared with those obtained from 100% air-stored samples. Modified atmosphere conditions slowed down the deterioration rate of grouper fillets. Results from chemical and microbiological analyses showed that fillets under MA were significantly better than those under 100% air-stored fillets throughout all storage periods, and sensory properties scored significantly (p<0.05) higher. The shelf life of fillets packaged in 80% CO2 : 20% N2 and 60% CO2 : 40% N2 were 18 and 14 days respectively, and seven days for 100% air-stored fillets.
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