The aquaculture industry has long relied on synthetic antioxidants. However, natural alternatives are now available and the UK Soil Association has declared to only use these natural ingredients in its certified organic fish feeds.
Natural oxidants generally use extracts of plants, seeds
and nuts, and have active ingredients including various forms of vitamin E
tocopherols, vitamin C, gallates and diterpenes. The majority of non-organic
fish feeds and their ingredients still contain synthetic antioxidants such as
Butylated hydroxytoluene and Ethoxyquine. Exposure to Ethoxyquine in the
workplace has been linked to allergic contact dermatitis because of its low
acute toxicity.
Related website:
Soil
Association
Source: foodnavigator.com