Properties of gelatin-based films incorporated with chitosan-coated microparticles charged with rutin
Properties of gelatin-based films incorporated with chitosan-coated microparticles charged with rutin
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DOI：
10.1016/j.ijbiomac.2017.03.163
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发表时间：
2017-08-01
影响因子：
8.2
通讯作者：
do Amaral Sobral, Paulo Jose
中科院分区：
文献类型：
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作者：
Dammak, Ilyes;Quinta Barbosa Bittante, Ana Monica;do Amaral Sobral, Paulo Jose
本研究的目的是研制一种以明胶为基质，加入抗氧化剂、芦丁为载体的活性膜。利用带相反电荷的卵磷脂与壳聚糖之间的络合作用制备壳聚糖包衣微粒。所产生的微粒具有520 +/-4nm的平均尺寸和0.3的跨度，通过转子-定子均化器以10，000 rpm的均化速度配制。通过在明胶基膜中掺入各种浓度（0.05、0.1、0.5或1%（基于明胶粉末的重量））的壳聚糖涂覆的微粒来制备复合膜。对于所制备的膜，结果表明，所获得的物理化学，水蒸气阻隔性，和机械性能与天然明胶膜相比，壳聚糖浓度高于0.5%时略有下降。通过扫描电子显微镜进行的微观结构研究显示，由于将微粒掺入明胶基质中而产生的嵌入有油的不同微孔。此外，量热结果与Tg值为45 ℃的明胶对照膜的量热结果相当，并且随着微粒掺入的增加，结晶度百分比增加。因此，这种复合生物可降解膜的原始概念可能是结合脂溶性活性化合物以设计具有良好性能的活性包装的良好替代方案。(C)2017 Elsevier B. V.版权所有。
The aim of this study was development an active film based on gelatin incorporated with antioxidant, rutin carried into microparticles. The complexation between oppositely charged lecithin and chitosan was applied to prepare the chitosan-coated microparticles. The generated microparticles had an average size of 520 +/- 4nm and a span of 0.3 were formulated by a rotor-stator homogenize at the homogenization speed 10,000 rpm. Composite films were prepared by incorporating chitosan-coated microparticles, at various concentrations (0.05, 0.1, 0.5, or 1% (based on the weight of the gelatin powder)) in the gelatin based films. For the prepared films, the results showed that obtained physicochemical, water vapor barrier, and mechanical were compared with native gelatin film with a slight decrease for chitosan concentration higher than 0.5%. The microstructure studies done by scanning electron microscopes, revealed different micropores embedded with oil resulting from the incorporation of the microparticles into the gelatin matrix. Moreover, the calorimetric results were comparable to those of gelatin control film with Tg value 45 degrees C and increased crystallinity percentage with increasing incorporation of microparticles. This original concept of composite biodegradable films may thus be a good alternative to incorporate liposoluble active compounds to design an active packaging with good properties. (C) 2017 Elsevier B.V. All rights reserved.