Grupo de Inovação em Biotecnologia e Alimentos da Amazônia (gIBA), Universidade Federal do Amazonas, Manaus, Amazonas 69077-000, Brazil; Federal Institute of Education, Science and Technology of Amazonas, Manaus, Amazonas, Brazil.
Laboratory of Nanostructured Polymers (NANOPOL; @nanopol_ufam), Federal University of Amazonas, Manaus, Amazonas 69077-000, Brazil.
Int J Biol Macromol. 2021 Jul 1;182:1618-1627. doi: 10.1016/j.ijbiomac.2021.05.165. Epub 2021 May 27.
The goal of this paper was to evaluate the influence of a range of plasma generation voltages on the physicochemical, structural, and technological properties of Aria (Goeppertia allouia) starch. Untreated (0 kV) and high voltages of cold plasma generation (7, 10, 14, and 20 kV) treated samples were evaluated according to their amylose content, pH, groups carbonyl/carboxyl, molecular size distribution, structure and technological properties (empirical viscosity, hydration properties, thermal analysis and gel strength). The applied voltage of 14 kV resulted in the greatest depolymerization of the starch chains, while 20 kV allowed the formation of oxidized complexes, promoting crosslinking of the starches chain. The cold plasma technique did not affect the levels of resistant starches, but increased the starch digestibility. The increased carbonyl and carboxyl groups also influenced the paste viscosity, improved hydration properties. This study suggests that the cold plasma technique can be useful in the controlled modification of starches, producing starches with different technological properties.
本论文的目的是评估一系列等离子体生成电压对 Aria（Goeppertia allouia）淀粉的物理化学、结构和技术特性的影响。根据淀粉的直链淀粉含量、pH 值、羰基/羧基基团、分子量分布、结构和技术特性（经验粘度、水合特性、热分析和凝胶强度）对未经处理（0 kV）和经高压冷等离子体处理（7、10、14 和 20 kV）的样品进行评估。14 kV 的应用电压导致淀粉链的解聚程度最大，而 20 kV 允许氧化复合物的形成，从而促进淀粉链的交联。冷等离子体技术不会影响抗性淀粉的含量，但会增加淀粉的消化率。羰基和羧基基团的增加也会影响糊的粘度，改善水合性能。本研究表明，冷等离子体技术可用于控制淀粉的改性，生产具有不同技术特性的淀粉。
