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首页> 外文期刊>Journal of food engineering >Characterization of antimicrobial polylactic acid based films
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Characterization of antimicrobial polylactic acid based films

机译：抗菌聚乳酸基薄膜的表征

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摘要

Olive leaf extract (OLE) (Olea europaea L.), which has antimicrobial effect on many food pathogens, was incorporated as antimicrobial agent into polylactic acid (PLA) films. Antimicrobial activities of films were tested against Staphylococcus aureus. Increasing amount of the OLE in the film discs from 0.9 mg to 5.4 mg caused a significant increase in inhibitory zones from 9.10 mm to 16.20 mm, respectively. Moreover, incorporation of OLE and/or increasing the amount in the film formulation significantly enhanced the water vapor permeability (WVP). The water solubility and the degradation rates of films increased up to 19.3% and 22.4%, respectively. Thus, OLE incorporated PLA films have a prospectively potential in antimicrobial food packaging to reduce post-process growth of S. aureus with improved properties.
机译：对许多食品病原体具有抗菌作用的橄榄叶提取物（OLE）（Olea europaea L.）被作为抗菌剂掺入了聚乳酸（PLA）薄膜中。测试膜对金黄色葡萄球菌的抗菌活性。膜片中的OLE含量从0.9 mg增加到5.4 mg分别导致抑制区从9.10 mm增加到16.20 mm。此外，在膜制剂中掺入OLE和/或增加其用量显着增强了水蒸气渗透性（WVP）。薄膜的水溶性和降解率分别提高了19.3％和22.4％。因此，掺有OLE的PLA膜在抗菌食品包装中具有潜在的潜力，以降低金黄色葡萄球菌的后处理生长并具有改善的性能。

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