Improvements in the prevention of flavour reversion in edible fats and fatty oils andin foodstuffs containing such fats and fatty oils

摘要

Edible fats and fatty oils are stabilized against flavour reversion by the addition of at least 0.0005 per cent but less than 0.005 per cent of a tetra-alkyl-, tetra-aryl-, or tetra-aralkyl-thiuram disulphide. Edible fats and fatty oils mentioned are soyabean oil, linseed oil, cottonseed oil, rapeseed oil, fish oil and fish liver oil, such as cod liver oil, in normal or hydrogenated form and dry or emulsified. In the examples (1) 0.002 per cent of tetra-ethyl-thiuram disulphide is added to soya bean oil and (2) 0.0049 per cent of tetra-methyl-thiuram disulphide is added to hydrogenated rapeseed oil. Specification 652,082 is referred to.ALSO:Edible fats and fatty oils, and foodstuffs containing them, are stabilized against flavour reversion by the addition of at least 0.0005 per cent but less than 0.005 per cent of a tetraalkyl-, tetra-aryl-, or tetra-aralkyl-thiuram disulphide. Edible fats and fatty oils mentioned are soyabean oil, linseed oil, cottonseed oil, rapeseed oil, fish oil and fish liver oil, such as cod liver oil, in normal or hydrogenated form and dry or emulsified. Butter, margarine, mayonnaise and salad dressing may similarly be stabilized. In the examples, (1) 0.002 per cent of tetra-ethyl-thiuram disulphide is added to soyabean oil, (2) 0.0049 per cent of tetra-methyl-thiuram disulphide is added to hydrogenated rapeseed oil or to margarine prepared from a mixture of hydrogenated rapeseed and hydrogenated whale oil, (3) 0.0049 per cent of tetramethyl-thiuram disulphide is added to butter granules obtained from ordinary soured cream and 0.5 per cent of sodium chloride is added to the mixture and (4) sufficient tetra-ethyl-thiuram disulphide is added to cool cream to give on churning a butter containing 0.0005 per cent of tetra-ethyl-thiuram disulphide. For comparison purposes, the addition of dodecyl gallate and sodium chloride to butter is described. Specification 652,082 is referred to.