Integrated multitrophic aquaculture systems – Potential risks for food safety

Publication date: Available online 13 December 2019Source: Trends in Food Science &TechnologyAuthor(s): João Rosa, Marco F.L. Lemos, Daniel Crespo, Margarida Nunes, Andreia Freitas, Fernando Ramos, Miguel Ângelo Pardal, Sara LestonAbstractBackgroundThe demand for fish and fish products is now higher than ever. However, several problems such as nutrient loading or excessive use of resources can be associated with the intensification of aquaculture systems. Integrated multitrophic aquaculture systems (IMTAs) refer to the co-culture of different species belonging to different trophic levels, and offer a sustainable approach to aquaculture development. In these systems, organic and inorganic extractive species will feed on other species waste or on uneaten feed nutrients, acting as bioremediators.Scope and approachThe extractive capacity that these organisms have to take up nutrients from the water also means they will accumulate chemicals that are often administered in intensive productions. The present review describes a vast number of substances that can be found in IMTAs, either intentionally administered or resulting from contamination, and subsequently accumulated in species reared afterwards in these systems. The presence of such chemicals in organisms produced in IMTAs raises several food safety and human health concerns, which need to be addressed.Key findings and conclusionsAlthough IMTAs still face many challenges in terms of large scale production, le...
Source: Trends in Food Science and Technology - Category: Food Science Source Type: research

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This study aims to assess whether older adults with low muscle mass or strength, in the presence of obesity, have an increased risk of knee (TKR) and hip replacement (THR) over 13  years. 1082 community-dwelling older adults (51% women; mean age 62.9 ± 7.5 years) were studied at baseline and multiple time points over 13 years. The incidence of TKR and THR was determined by data linkage to National Joint Replacement Registry. Appendicular lean and fat mass were measure d using DXA. Lower-limb muscle strength (LMS) was assessed by dynamometer. Low muscle mass and strength were defined as t...
Source: Calcified Tissue International - Category: Orthopaedics Source Type: research
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Source: Journal of Optometry - Category: Opthalmology Source Type: research
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