This work provides an in-depth analysis on how the addition of different microalgae species (Nannochloropsis, Spirulina and Scenedesmus) affected the structural and physicochemical properties of thermoplastic corn starch biocomposites. Structural characterization was conducted by combined SAXS/WAXS experiments and it was correlated with mechanical and barrier properties of the biocomposites. A water vapour permeability drop of ca. 54% was observed upon addition of the different microalgae species. The oxygen permeability and the mechanical properties of biocomposites containing Spirulina or Scenedesmus were not improved since the presence of microalgae hindered the re-arrangement and packing of the lamellar structure of starch polymeric chains, according to the SAXS results. Nannochloropsis caused a great reduction of the matrix rigidity and, the oxygen permeability was also improved.

Therefore, all of these features make the Nannochloropsis biocomposites an alternative to generate biodegradable food packaging materials with the additional advantage that they can be easily scaled-up.

这项工作提供了关于不同微藻物种（Nannochloropsis，Spirulina和Scenedesmus）的添加如何影响热塑性玉米淀粉生物复合材料的结构和物理化学特性的深入分析。通过结合SAXS / WAXS实验进行结构表征，并将其与生物复合材料的机械性能和阻隔性能相关联。的水蒸汽渗透性下降CA。加入不同的微藻物种后观察到54％。含螺旋藻或场景藻的生物复合材料的透氧性和力学性能根据SAXS结果，由于微藻类的存在阻碍了淀粉聚合物链的层状结构的重新排列和堆积，因此没有改善淀粉链。Nannochloropsis导致基质刚度大大降低，并且透氧性也得到改善。

因此，所有这些特性使Nannochloropsis生物复合材料成为生产可生物降解食品包装材料的替代产品，并具有易于扩展的额外优势。