Treated plastic films are also effective. For example, low density polyethylene films with barley husk extracts were able to reduce the TBARS values of salmon fillets stored for 12 month at -20 °C (Abreu et al., 2010). Chitosan microcapsules with horseradish extract coated onto ethylene vinyl acetate film (Jung et al., 2009) resulted in an extended shelf life of Spanish mackerel stored at 5 °C for 9 days due to reduced oxidation