A SIMPLE PROCEDURE FOR ASSESSING THE PROTECTIVE EFFECT OF TRANSPARENT POLYMER FILMS USED FOR PACKAGING FOODS CONTAINING LIGHT-SENSITIVE NUTRIENTS

摘要: Sensitive components of foods may undergo degradation reactions when subjected to light. The packaging the food slow down such by absorbing and reflecting a fraction incident Riboflavin is typical lightsensitive nutrient undergoes first-order Rate constants this reaction were evaluated under 25W, 60W, 100W 200W white light bulbs at pH = 8, 20±1°C, with no shielding or single fold high density polyethylene two folds low films. Numerical values rate proportional source power varied number polymer proportionality constant was regarded as ‘protection index’ specific film. results implied that smaller protection index film constant. Although study done employing different kinds films one light-sensitive chemical only, approach be employed for comparing efficiency polymers used wrapping containing components.