期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 58, 期 20, 页码 10958-10964出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf1022324
关键词
Flavonoids; active packaging; antioxidant; release; EVOH
资金
- Spanish Ministry of Science and Innovation [AGL2006-02176, AGL2009-08776, Fun-C-Food CSD2007-00063]
- FPU
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, T-g, 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.
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