ABSTRACT

Efecto de las condiciones de atomización electrohidrodinámica sobre las características morfométricas y la resistencia mecánica de las partículas de mucílago de chía y alginato

Electrohydrodynamic atomization (EHDA) is a technique which produces monodispersed particles and can employ food grade biopolymers as wall materials, such as chia mucilage. The aim of this work was to study the changes on the morphometric characteristics (Feret, roundness) and mechanical resistance of chia mucilage-sodium alginate microparticles obtained at different process conditions (voltage: 11–14 kV; distance to collector 5.5–8.5 cm). The diameter of particles was ≤1 mm, being more deformed (roundness, RD < 0.61), with higher mechanical strength (MS: 7–7.5 N) and Weber numbers (9.9 x 10^{−5 –} 3.7 × 10⁻⁴) than those processed without voltage. A descriptive model relating We and process parameters was developed, being corroborated by Pearson analysis, and observing correlations larger than 0.8 between We with Feret and MS (0.817, 0.807), and Feret with MS and voltage (0.837, 0.826). These results confirmed the feasibility of applying EHDA to produce chia mucilage-sodium alginate particles with different morphologies and mechanical characteristics depending on process conditions.

摘要

电动多药雾化器效果图防锈药性变种和抗癌药

电流体动力学雾化（EHDA）是一种产生单分散颗粒的技术，可以使用食品级生物聚合物作为壁材料，例如正粘液。这项工作的目的是研究在不同工艺条件（电压：11–14 kV；与收集器之间的距离：5.5–8.5厘米）下获得的正粘液-海藻酸钠微颗粒的形态特征（Feret，圆度）和机械电阻的变化。 。颗粒直径≤1mm，变形更大（圆度，RD <0.61），具有更高的机械强度（MS：7–7.5 N）和韦伯数（9.9 x 10 ^{-5 –} 3.7×10 ^-4））比没有电压处理的那些。建立了一个与We和过程参数相关的描述性模型，通过Pearson分析得到证实，并且观察到Weet与Feret和MS之间的相关性大于0.8（0.817，0.807），而Feret与MS和电压之间的相关性大于0.8（0.837，0.826）。这些结果证实了应用EHDA根据工艺条件生产具有不同形态和机械特性的Chia粘胶-海藻酸钠颗粒的可行性。