Shelf-life Extension of Cooked Green Mussel Using Sodium Alginate-based Edible Coating Containing Different Antioxidants and Modified Atmosphere Packaging: Effect of Sodium Alginate-based Edible Coating Containing Different Antioxidants
Abstract:
A trained descriptive analysis panel evaluated cooked sensory attributes for cooked green mussel coated with an alginate-based coating. The optimum coating conditions for sensorial acceptance in the experiments were 0.002% sodium alginate concentration. There was 4 attributes as appearance, odor, flavor and texture for sensory acceptance. While odor attributes could use to be shelf life of cooked green mussel coated with an alginate-based coating incorporating with antioxidant. The effect of antioxidant (green tea and vitamin C) alginate-based coating on the quality changes of cooked green mussel during refrigerated storage of 18 days was investigated. Six different treatments were tested: control sample (TC), alginatebased coating (TA) and coated samples with alginatebased coating incorporating 2.5% green tea and 1.25% vitamin C (T1), 2.5% green tea and 2.5% vitamin C (T2), 0.625% green tea and 2.5% vitamin C (T3), 1.25% green tea and 2.5% vitamin C (T4) (v/v), respectively. Alginate-based coating incorporating antioxidant treatments (T1, T2, T3 and T4) effectively retarded qualities loss (chemical, physical, microbiological and sensorial quality) of cooked green mussel. Nevertheless, T2 had the highest inhibition on quality loss, compared with the other treatments. Therefore, an alginate-based coating incorporating with 2.5% green tea and 2.5% vitamin C coating could be a promising inhibition of cooked green mussel quality loss with extended shelf life. While the use of T2 extended the shelf life of cooked green mussel by 10 days, T1, T3 and T4 for 8 days compared to 6 days in TA and TC treatment samples (total plate count of not exceeded 6 log CFU/g). In addition, cooked green mussel coated with antioxidant alginate-based coating at all sample secure for growth of pathogenic microorganisms (Coliform bacteria and E. coli) as well.