This work is a comparative study of the application of mercerized soybean straw (MSS) and nanocellulose produced by acid (CNCs) or enzymatic hydrolysis (CNFs) as reinforcing fillers in soy protein isolate (SPI) films. CNCs presented average dimensions of about 10 nm-thick and 300 nm-long with a crystallinity index of 57%, whereas CNFs have similar diameters, though with greater lengths (>1 µm), lower crystallinity index (50%) and greater thermal stability. Incorporation of 5% of CNCs and CNFs (g/100 g of SPI) improved the SPI film tensile strength by 38 and 48% respectively, and decreased the SPI film elongation at break when compared to control films. The SPI-CNC films showed the lowest values for solubility, probably due to their higher crystallinity (63%). On the other hand, the water vapor permeability was solely reduced with CNF addition, which can be attributed to their higher aspect ratio (length/diameter) and a better incorporation into the protein matrix.

这项工作是对酸化（CNCs）或酶促水解（CNFs）产生的丝光大豆秸秆（M​​SS）和纳米纤维素作为增强蛋白在大豆分离蛋白（SPI）膜中的应用的比较研究。CNCs的平均尺寸约为10 nm厚，长度为300 nm，结晶度为57％，而CNF的直径相似，但是长度更大（> 1 µm），结晶度较低（50％），并且热稳定性更好。 。与对照膜相比，加入5％的CNCs和CNF（g / 100 g SPI）分别将SPI膜的拉伸强度提高了38％和48％，并降低了SPI膜的断裂伸长率。SPI-CNC薄膜显示出最低的溶解度值，这可能是由于其较高的结晶度（63％）。另一方面，添加CNF只会降低水蒸气的渗透性，