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61,005 resultsShowing papers similar to Thermal processing implications on microplastics in rainbow trout fillet
ClearNo evidence of spherical microplastics (10–300 μm) translocation in adult rainbow trout (Oncorhynchus mykiss) after a two-week dietary exposure
Rainbow trout were exposed to spherical microplastics ranging from 10 to 300 micrometers to determine whether particles translocate from the gut into body tissues in adult fish. No evidence of microplastic translocation from the gastrointestinal tract to systemic tissues was found, suggesting that fish gut removal before consumption reduces but may not eliminate human dietary microplastic exposure.
Increased MicroplasticIntake from Fry-Cooked FishMuscle Tissue
Researchers quantified microplastic uptake in fish muscle tissue cooked by frying, finding that the frying process increased detectable microplastic content compared to raw tissue, suggesting cooking methods may introduce or mobilize particles from packaging or cooking surfaces.
Evaluation of different packaging methods and storage temperature on MPs abundance and fillet quality of rainbow trout
Researchers packed rainbow trout fillets using different packaging methods and stored them at refrigeration and freezing temperatures for 21 days, finding that packaging type strongly influenced microplastic contamination levels — with chitosan film providing the lowest MP counts — while frozen storage actually increased detected MP levels despite better chemical quality.
Increased Microplastic Intake from Fry-Cooked Fish Muscle Tissue
Researchers compared how different cooking methods affect microplastic levels in fish muscle tissue and found that frying significantly increased microplastic abundance from 4 to over 36 particles per gram. Steaming and boiling did not cause significant changes in microplastic levels. The study identified PVC fragmentation during frying as a primary contributor and suggests that cooking methods should be factored into dietary microplastic exposure assessments.
Microplastics in brown trout (Salmo trutta Linnaeus, 1758) from an Irish riverine system
Microplastic prevalence and characteristics were assessed in brown trout (Salmo trutta) from an Irish riverine system to investigate plastic ingestion in a freshwater salmonid. The study found microplastics in a proportion of sampled fish, adding to the limited literature on microplastic ingestion in freshwater salmonids and highlighting rivers as an exposure pathway for these commercially important fish.
Oncorhynchus mykiss Microplastic Exposure: Impacts and Research Gaps
This review synthesized global research on the effects of microplastic exposure on rainbow trout, documenting histopathological changes, oxidative stress, immune impacts, and reproductive disruption across various MP types, concentrations, and exposure durations studied in this commercially important fish.
Microplastic Contamination in Farmed Rainbow Trout (Oncorhynchus mykiss): First Evidence from Bulgarian Freshwater Aquaculture
Researchers present the first assessment of microplastic contamination in farmed rainbow trout muscle tissue from Bulgarian freshwater aquaculture. Using advanced infrared imaging spectroscopy, they detected microplastics in all examined fish, with multiple polymer types suggesting diverse contamination sources. The findings underscore the importance of monitoring microplastic levels in aquaculture species intended for human consumption.
Size Matters: Ingestion of Relatively Large Microplastics Contaminated with Environmental Pollutants Posed Little Risk for Fish Health and Fillet Quality
Rainbow trout were fed polystyrene microplastics (100–400 μm) contaminated with sewage or harbor effluent for 4 weeks, with liver biomarkers showing no significant oxidative stress and the fillet showing no change in oxidative stability during ice storage. The study concludes that ingestion of environmentally-sized contaminated microplastics poses little risk to fish health or meat quality under realistic exposure conditions.
Microplastics in the aquatic environment: implications for post-harvest fish quality
This review examined how microplastic accumulation in aquatic environments threatens post-harvest fish quality, discussing how plastic particles and associated chemical contaminants in fish gut tissue raise food safety concerns and can affect consumer acceptance.
Size-Dependent Tissue Translocation and Physiological Responses to Dietary Polystyrene Microplastics in Salmo trutta
Researchers fed brown trout polystyrene microplastics of different sizes through their diet and tracked particle distribution and physiological effects, including a recovery period after exposure ended. They found that smaller microplastics were more likely to translocate from the gut to other organs, and that size significantly influenced where particles accumulated. The study provides important data on how microplastic size affects tissue distribution and physiological responses in a temperate freshwater fish.
Assessment of microplastic contamination in rainbow trout (Oncorhynchus mykiss) and surface water of a high-altitude aquaculture system in the Chehel Chai River, Iran
Researchers investigated microplastic contamination in both farmed rainbow trout and the surface water of the Chehel Chai River in Iran, finding microplastics in fish digestive tracts, gills, and skin. A total of 50 fish were analyzed, revealing widespread presence of plastic particles across all tissue types examined. The study raises concerns about microplastic transfer to humans through consumption of farmed fish from contaminated waterways.
Effects of cooking methods on microplastics in dried shellfish
Researchers examined how different cooking methods affect microplastic levels in dried shellfish, finding that certain preparation techniques altered the abundance and characteristics of microplastics present, with implications for human dietary exposure.
14 C-labelled nanoplastics reveal size-dependent bioaccumulation in juvenile rainbow trout ( Oncorhynchus mykiss )
Using radiocarbon-labelled particles, researchers tracked how nanoplastics of different sizes accumulate and move through juvenile rainbow trout, showing that particle size determines how long nanoplastics stay in the fish and how far they translocate from the gut. Because rainbow trout are widely eaten and farmed, these findings have direct implications for understanding human exposure to nanoplastics through fish consumption.
Effect of biological and environmental factors on microplastic ingestion of commercial fish species
Researchers analyzed microplastic ingestion in commercially important fish species, evaluating how biological and environmental factors influence ingestion rates across 2,222 individual fish. The study assessed gastrointestinal tract contents to determine the extent and patterns of microplastic contamination. The findings suggest that both species-specific biology and environmental conditions play important roles in determining microplastic ingestion levels in commercial fish.
Microplastic particles observed in multiple tissues of lake ontario sportfish
Researchers quantified microplastics in both gastrointestinal tracts and fillets of six sportfish species from Humber Bay, Lake Ontario, finding anthropogenic particles in all fish sampled with a mean of 147.9 particles per individual and up to 1,508 in a single fish, and observing that gut particle counts did not predict fillet particle counts, suggesting independent translocation pathways.
Understanding the sources, fate and effects of microplastics in aquatic environments with a focus on risk profiling in aquaculture systems
This review summarizes how microplastics enter aquaculture systems and accumulate in farmed fish, causing toxic effects including immune disruption, oxidative stress, and genetic damage. Since farmed fish are a major food source, the buildup of microplastics in aquaculture poses a direct pathway for these particles to reach human diets.
Evidence of Microplastic Translocation in Wild-Caught Fish and Implications for Microplastic Accumulation Dynamics in Food Webs
Researchers found microplastics not just in the stomachs but also in the muscle tissue and livers of wild-caught fish from a Canadian lake, confirming that microplastics can move from the gut into other body tissues. Interestingly, smaller fish had more translocated particles per gram of body weight than larger fish, and there was no clear pattern of microplastics building up at higher levels of the food chain. The study highlights that people eating fish fillets may be consuming microplastics that have moved beyond the gut into edible tissue.
Toxicity of microplastics in fish: A short review
This short review summarizes current knowledge on microplastic occurrence in fish, covering sources and pathways of ingestion, impacts on fish physiology and behavior, and potential strategies for monitoring and reducing contamination.
Effects of microplastics in freshwater fishes health and the implications for human health
This review examines how microplastics affect the health of freshwater fish, which are a major protein source for billions of people. Fish ingest microplastics that accumulate in their guts, gills, and tissues, leading to inflammation, oxidative stress, and disrupted growth. Since microplastics in fish tissue can transfer to humans through the food chain, this is relevant to both ecosystem and human health.
Quantification of microplastic in fillet and organs of farmed and wild salmonids- a comparison of methods for detection and quantification
Three analytical methods were compared for detecting microplastics in salmon tissue, and all three found low but measurable concentrations. The study highlights both the promise and limitations of current methods, underscoring the need for standardization to accurately assess how much plastic consumers ingest through farmed and wild salmon.
Screening for microplastics in sediment, water, marine invertebrates and fish: Method development and microplastic accumulation
Researchers developed improved methods for extracting microplastics from biological samples and sediments, using enzymatic digestion that achieved 97% particle recovery without damaging the plastics. When applied to field samples from the North Sea and Swedish coast, they found microplastics in 8 of 9 invertebrate species tested and in 68% of brown trout. Mussel tissue contained roughly a thousand times more microplastic particles per kilogram than surrounding sediment or water.
Effect of microplastics on Yersinia ruckeri infection in rainbow trout (Oncorhynchus mykiss)
Researchers found that microplastic exposure predisposed rainbow trout to more severe Yersinia ruckeri infections, with co-exposed fish showing worse blood biochemical parameters and hepatic oxidative stress compared to fish exposed to the pathogen alone.
Effects of a microplastic exposure gradient on juvenile lake trout (Salvelinus namaycush)
Researchers exposed newly hatched lake trout for 12 weeks to three types of microplastics, polyethylene, polystyrene, and polyethylene terephthalate, at a gradient of concentrations to assess effects on early life stages of this important sportfish. Microplastic exposure caused growth and developmental effects in juvenile lake trout, with responses varying by polymer type and concentration.
Effects of a microplastic exposure gradient on juvenile lake trout (Salvelinus namaycush)
Researchers exposed newly hatched lake trout to a gradient of three microplastic types over 12 weeks, assessing growth, survival, and physiological biomarkers. Microplastic exposure caused dose-dependent effects on early life stage fish, with polymer type influencing the pattern of harm.