By T. R. Crompton
Plastics are actually getting used on a wide scale for the packaging of fatty and aqueous foodstuffs and drinks, either alcoholic and non-alcoholic. therefore it truly is most likely that a few move of polymer ingredients will take place - adventitious impurities similar to monomers, oligomers, catalyst remnants and residual polymerisation solvents and coffee molecular weight polymer fractions - from the plastic into the packaged fabric with the resultant hazard of a poisonous danger to the shopper. This booklet covers all features of the migration of additions into meals and provides targeted info at the analytical selection of the ingredients in quite a few plastics. This publication should be of curiosity to these engaged within the implementation of packaging laws, together with administration, analytical chemists and the brands of meals, drinks, prescription drugs and cosmetics and in addition medical and toxicologists within the packaging undefined. --------------------------------------------------------------------------------
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Additional resources for Additive Migration from Plastics into Food; A Guide for Analytical Chemists
The low gas permeability of the film has been utilised in sachets for vacuum packed foods, such as cheese slices and bacon. Moulded articles in polyamide are widely used in food manufacturing processes. The fact that polyamides are self lubricating and consequently do not require the addition of a lubricant additive is a particularly important factor in the food industry where contamination by lubricants cannot be tolerated. 1 Polymethylmethacrylate This is a very clear plastic with good light exposure properties.
Filled natural rubbers are used to produce hoses and conveyor belts used in food production. Nitrile rubbers are synthetic copolymers of butadiene and acrylonitrile. These are used more widely than natural rubbers to produce hoses, dairy equipment, seals, gaskets, car seals and bottle closures. Other synthetic rubbers used in packaging include ethylene - propylene - diene terpolymers and vinylidene fluoride - hexafluoropropylene copolymer. Use in food production includes the packaging of milks, yoghurts, infant formulae and beverages.
Use this solution in the 1 cm reference cell of the spectrophotometer and measure the optical density of the test extractant at 250 nm versus the blank in the reference cell. Prepare a calibration curve for Santonox in the glacial acetic acid - ethanol solution and obtain the Santonox concentration of the test extractant from the calibration curve. 27. • Using Liquid Paraffin BP as Extractant Dispense a 25 ml aliquot of the extractant into a 50 ml standard flask and dilute to the mark with cyclohexane.