Abstract The composite fibrous films were developed from zein and poly(lactic acid) (PLA) by incorporating carvacrol at three different concentrations (5, 10 and 20%) using electrospinning. The morphology and size of fibers obtained from both zein and PLA were affected by the level of the incorporated carvacrol. The Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA) results showed that carvacrol was encapsulated in electrospun zein and PLA fibers. The antioxidant activity of carvacrol loaded zein fibers ranged from 62 to 75%, while antioxidant capacity of PLA fibers varied from 53 to 65% for 5–20% carvacrol content. The composite fibrous films showed a sustained diffusion controlled release behavior. Preliminary studies on whole wheat bread samples showed that carvacrol loaded electrospun zein and PLA fibers are able to preserve bread samples, indicating that they are good candidates for active food packaging applications to extend the shelf life of whole wheat bread.

中文翻译：

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来自玉米醇溶蛋白和聚乳酸的负载香芹酚的电纺纤维薄膜，用于活性食品包装

摘要 复合纤维薄膜是由玉米醇溶蛋白和聚乳酸 (PLA) 通过静电纺丝以三种不同浓度（5%、10% 和 20%）掺入香芹酚制成的。从玉米醇溶蛋白和 PLA 中获得的纤维的形态和尺寸受加入的香芹酚水平的影响。傅里叶变换红外 (FTIR) 光谱和热重分析 (TGA) 结果表明香芹酚被包封在电纺玉米蛋白和 PLA 纤维中。负载香芹酚的玉米醇溶蛋白纤维的抗氧化活性为 62% 至 75%，而 PLA 纤维的抗氧化能力在 5-20% 香芹酚含量下为 53% 至 65%。复合纤维膜表现出持续扩散控释行为。