Egg deterioration occurs during storage time, which leads to quality loss. Thus, different preservations methods have been used to extend the shelf-life and maintain the safety of eggs. Edible coating materials based on biopolymers, such as starches and other renewable sources, have been used for different food products and been identified as an effective method of food preservation. In this study, eggs were coated with edible coatings prepared from sweet potato starch (SPS) and varying levels of thyme essential oil (TEO), including 0 (control), 2%, 4%, and 6%. The quality and safety of the coated and uncoated eggs during five weeks of storage at 25 °C were studied. The application of 4% TEO in SPS-based coatings maintained the quality and safety of eggs two weeks longer than non-coated eggs. This study showed that the SPS-TEO coating could be useful in extending the shelf life of eggs during storage time, by delaying changes in egg quality.
Shrimp is a popular seafood throughout the world. However, shrimp is highly perishable due to biochemical, microbiological, or physical changes during postmortem storage. In this study, the effect of a surimi-based coating with and without montmorillonite (MMT) nanoclay on shrimp quality was evaluated during eight days of refrigerator storage. Use of a surimi-based coating resulted in reductions of aerobic plate counts (APC) up to 2 log units. The combined effect of the MMT and coating was observed. Surimi-based coating with MMT resulted in lower APC (p < 0.05) toward the end of storage. The application of surimi-based coating with MMT to the shrimp samples improved sensory quality and delayed lipid oxidation and color deterioration during storage time. In general, better texture was observed when coating was applied either with or without MMT. This study suggests that surimi-based coating may improve the quality of shrimp during refrigerated storage.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.