Effect of cellulose and lignin on disintegration, antimicrobial and antioxidant properties of PLA active films.
Effect of cellulose and lignin on disintegration, antimicrobial and antioxidant properties of PLA active films.
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DOI：
10.1016/j.ijbiomac.2016.04.068
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发表时间：
2016-08
影响因子：
8.2
通讯作者：
Weijun Yang;E. Fortunati;F. Dominici;Geremia Giovanale;A. Mazzaglia;G. Balestra;José M Kenny;D. Puglia
中科院分区：
文献类型：
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作者：
Weijun Yang;E. Fortunati;F. Dominici;Geremia Giovanale;A. Mazzaglia;G. Balestra;José M Kenny;D. Puglia
本研究报告的抗菌，抗氧化剂，迁移和崩解活性的三元纳米复合膜的基础上，聚（乳酸）纳入两个生物基纳米填料，（纤维素纳米晶体（CNC）和木质素纳米粒子（LNP）），在两个不同的量（1和3%重量）的影响。抗微生物测试的结果显示，该菌株能够长期抑制革兰氏阴性细菌Xanthomonasaxonopodisv. vesicatoriaandXanthomonasarboricolapv.prunialong的生长，为对抗危险的细菌性植物病原体提供了创新的机会。LNP被证明是非常有效的抗氧化活性，基于在517 nm处的吸收带的自由基，2，2-二苯基-1-苦基肼（DPPH）的消失后，由抗自由基化合物还原;此外，LNP和CNC的组合产生协同的正面效果，在PLA三元膜的抗氧化响应。此外，所有研究的制剂在堆肥条件下孵育15天后显示出高达90%的崩解性值。结果表明，该薄膜适合于食品包装领域的应用。
This study reports the effects on antimicrobial, antioxidant, migration and disintegrability activities of ternary nanocomposite films based on poly(lactic acid) incorporating two biobased nanofillers, (cellulose nanocrystals (CNC) and lignin nanoparticles (LNP)), in two different amounts (1 and 3% wt.). Results from antimicrobial tests revealed a capacity to inhibit the Gram negative bacterial growth ofXanthomonas axonopodispv.vesicatoriaandXanthomonas arboricolapv.prunialong the time, offering innovative opportunities against dangerous bacterial plant pathogens. LNP proved to be highly efficient in antioxidation activity, based on the disappearance of the absorption band at 517 nm of the free radical, 2,2-diphenyl-1-picrylhydrazyl (DPPH) upon reduction by an antiradical compound; moreover the combination of LNP and CNC generates a synergistic positive effect in the antioxidation response of PLA ternary films. Furthermore, all the studied formulations showed a disintegrability value up to 90% after 15 days of incubation in composting conditions. Migration results showed that the films can be considered suitable for application in food packaging field.