Abstract Free surface electrospinning is a method for high throughput production of nonwovens using electrostatic charge. The Spirulina microalga is known for its high protein content and it presents in its biomass antioxidants of commercial importance such as phycocyanin. The objective of this study was to develop antioxidant ultrafine fibers based on protein concentrate from Spirulina sp. LEB 18/poly(ethylene oxide) (PEO) and phycocyanin, using a free surface electrospinning method. Uniform ultrafine fibers of protein concentrate of Spirulina sp. LEB 18 containing 2% (w w−1) of phycocyanin were developed with diameters of 269, 314 and 542 nm, at 5, 7.5 and 10% (w w−1) protein concentrations, respectively. The electrospun fibers increased the thermal stability of phycocyanin. Overall, the Spirulina sp. LEB 18/PEO electrospun fibers loaded with phycocyanin showed antioxidant properties. Thus, microalgal biocompounds such as phycocyanin are innovative alternatives for the development of bioactive ultrafine fibers for potential application in food preservation.

中文翻译：

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使用自由表面静电纺丝法用微藻化合物开发的抗氧化超细纤维

摘要 自由表面静电纺丝是一种利用静电荷高产量生产非织造布的方法。螺旋藻微藻以其高蛋白质含量而闻名，它存在于其具有商业重要性的生物质抗氧化剂中，例如藻蓝蛋白。本研究的目的是开发基于螺旋藻的蛋白质浓缩物的抗氧化超细纤维。LEB 18/聚（环氧乙烷）（PEO）和藻蓝蛋白，使用自由表面静电纺丝方法。螺旋藻蛋白浓缩物的均匀超细纤维。LEB 18 含有 2% (ww-1) 的藻蓝蛋白，其直径分别为 269、314 和 542 nm，蛋白质浓度分别为 5、7.5 和 10% (ww-1)。电纺纤维增加了藻蓝蛋白的热稳定性。总体而言，螺旋藻 sp。负载藻蓝蛋白的 LEB 18/PEO 电纺纤维显示出抗氧化性能。因此，藻蓝蛋白等微藻生物化合物是开发生物活性超细纤维的创新替代品，可用于食品保鲜。