Off-flavor compounds produced by low-molecular-weight amine compounds present in fish are degraded into ammonia or other nitrogenous compounds during storage.
Off-flavors in pond and recirculating aquaculture systems have occurred through the biological production of geosmin and 2-methylisoborneol. The compounds are rapidly absorbed through the gills of fish, but depuration can require days or weeks.
If approved by FDA, fast-growing genetically modified salmon will provide a safe and nutritious product similar to other farmed Atlantic salmon.
A zero-tolerance precautionary approach to certain antibiotics in food has proven unworkable as a result of continuing analytical progress for food safety.
Freshwater shrimp can contain pathogenic bacteria that cause illness unless care is exercised by producers, retailers and consumers. Many of the human pathogens can survive frozen storage, but are killed or inactivated by thermal processes.
Spoilage in freshwater prawns is endogenous rather than exogenous and results from proteolytic enzymes in the cephalothorax.
A pilot study on the sensory properties of Pacific oysters and abalone conducted at the CSIRO Sensory Laboratory in Australia found differences among the samples produced in different growing conditions and regions.
With pangasius imports growing in Central and South American production areas, one response is to introduce the fish as a new aquaculture species.
Some substances can migrate from plastics and other seafood packaging materials into the product. Even if the substances are not harmful, they can affect the flavor and acceptability of the food.
Ice slurry can provide even chilling of seafood at harvest to slightly above the freezing point and maintain this temperature throughout the cold chain.
Methods for analyzing histamine in fish, which causes many seafood-related illnesses, include test kits and high-performance chromatographic liquids.
Shrimp farming in Brazil grew rapidly from the late 1990s to 2003. Brazil can again become a global leader, for it has 600,000 ha of suitable area with excellent natural conditions and infrastructure, and a large internal market.
Pasteurization of crustaceans, which can extend shelf life to years, preserves many of the chemical and physical characteristics of the original seafood and destroys most spoilage and many pathogenic bacteria.
There is a widely promoted misconception that eating wild-caught fish is better for the oceans than eating farmed seafood. On a global basis, however, sustainably farmed fish may represent 60 times more efficient use of anchovies and other baitfish resources than wild fish.
Microbiological, biochemical and sensory analyses have concluded that rapid cooling with ice slurry achieves good quality and yield for many fish species.
An important step in preparing smoked fish is obtaining uniform distribution of salt in the finished product. Dry salt curing is effective but requires experimentation and experience for best results.