Cobos Ángel, Díaz Olga
Área de Tecnología de Alimentos, Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain.
Foods. 2023 Dec 25;13(1):75. doi: 10.3390/foods13010075.
Chickpea flour is an affordable natural blend of starch, proteins, and lipids, which can create films with suitable properties as an eco-friendly packaging material. Nanoclays' incorporation into natural biopolymers enhances the barrier properties of the resulting nanocomposites, so they could improve the properties of flour films. The objective of this work was to assess the influence of three types of nanoclays (halloysite, bentonite, and Cloisite 20A) at two concentrations on the characteristics of chickpea flour films. In general terms, when the lowest dose (5%) was added, no or very slight significant differences with the control were observed in most parameters, except for thermal stability and opacity, which increased, and solubility, which decreased. At the highest concentration (10%), films containing any of the nanoclays demonstrated greater thermal stability, opacity, and rigidity while being less soluble than those without nanofillers. Bentonite exhibited superior film structure distribution compared to other nanoclays. At the highest concentration, it had the most significant impact on modifying the properties of chickpea flour films, increasing their tensile and puncture strengths while decreasing elasticity and water vapor permeability. The incorporation of nanoclays into chickpea flour films could be a useful technique to enhance their properties.
鹰嘴豆粉是一种价格实惠的天然淀粉、蛋白质和脂质混合物，可制成具有合适特性的薄膜，作为一种环保包装材料。将纳米粘土掺入天然生物聚合物中可增强所得纳米复合材料的阻隔性能，因此它们可以改善面粉薄膜的性能。这项工作的目的是评估两种浓度的三种类型纳米粘土（埃洛石、膨润土和有机改性蒙脱土Cloisite 20A）对鹰嘴豆粉薄膜特性的影响。一般来说，当添加最低剂量（5%）时，除了热稳定性和不透明度增加以及溶解度降低外，在大多数参数上与对照组相比未观察到显著差异或仅有非常轻微的显著差异。在最高浓度（10%）时，含有任何一种纳米粘土的薄膜表现出更高的热稳定性、不透明度和刚性，同时比不含纳米填料的薄膜更难溶解。与其他纳米粘土相比，膨润土表现出更好的薄膜结构分布。在最高浓度下，它对改变鹰嘴豆粉薄膜的性能影响最大，提高了其拉伸强度和抗穿刺强度，同时降低了弹性和水蒸气透过率。将纳米粘土掺入鹰嘴豆粉薄膜中可能是一种增强其性能的有用技术。
