Abstract
This study investigated the effects of pectin coating incorporated with chitosan (CH) and Tarragon essential oil (Artemisia dracunculus) (TEO) on the microbiological, physicochemical, and sensory properties of Scomberomorus commerson muscle during refrigerated storage. The results showed that pectin coating incorporated with CH and TEO could develop active coatings with excellent antibacterial activity to inhibit bacterial growth (mesophilic, psychrotrophic, and lactic acid bacteria). The initial mesophilic, psychrotrophic, and lactic acid bacteria (log10 CFU/g) in the all samples of fillet were 3.21, 4.03 and 1.23–1.72 log10 CFU/g. Pectin-CH coating on mackerel samples enriched with TEO could retard physicochemical properties and preserve the fish quality during refrigerated storage. There was a statistical difference between composite and bi-layer coatings (CC and BC) incorporating TEO (P < 0.05). The SDS‐PAGE analysis of the samples during storage exhibited higher degradation of proteins (myosin heavy chain (MHC), paramyosin, actin, troponin T, and tropomyosin bands) in the control samples than in the treated samples. According to the quality attributes, the incorporation of essential oils or other biopolymers into edible coatings could decrease the bacterial and physicochemical deterioration of seafood during chilling.
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