食品包装
乙烯醇
化学
活性包装
共聚物
儿茶素
有机化学
抗氧化剂
酒
乙烯
乙醇
溶解度
聚合物
食品科学
多酚
催化作用
作者
Carol López-de-Dicastillo,José María Rabal Alonso,Ramón Catalá,Rafael Gavara,Pilar Hernández‐Muñoz
摘要
Ethylene−vinyl alcohol copolymer (EVOH) films containing catechin or quercetin as antioxidant agents were successfully produced by extrusion. The addition of these bioactive compounds did not modify greatly their water and oxygen permeabilities, Tg, or crystallinity but improved their thermal resistance. Exposure of the films to different food simulants showed that both compounds were released, although the extent and kinetics of release were dependent on the type of food. In aqueous and alcoholic food simulants their release was greater in the case of the catechin-containing samples. Exposure of the films to isooctane and ethanol 95% (fatty food simulants) provided controversial results; no release was observed in isooctane, whereas both bioactive compounds were extracted by ethanol due to their high solubility in alcohol and the plasticizing effect of ethanol on the polymer. Packaging applications of these films can improve food stability and provide a method for adding such bioactive compounds.
科研通智能强力驱动
Strongly Powered by AbleSci AI