Effect of industry-scale microfluidization on structural and physicochemical properties of potato starch
Effect of industry-scale microfluidization on structural and physicochemical properties of potato starch
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工业规模微流化对马铃薯淀粉结构和理化性质的影响
DOI：
10.1016/j.ifset.2019.102278
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发表时间：
2020-03-01
影响因子：
6.6
通讯作者：
Liu, Cheng-mei
中科院分区：
文献类型：
--
作者：
He, Xiao-hong;Luo, Shun-jing;Liu, Cheng-mei
一种近期设计的“工业规模微射流仪”（ISM）被用于处理马铃薯淀粉，然后对在不同ISM压力（30、60、90和120兆帕）下处理的马铃薯淀粉的结构和理化性质进行了研究。随着ISM压力的增加，淀粉颗粒大小首先增大，随后在120兆帕时下降。观察到淀粉颗粒发生了显著的破坏，在120兆帕处理后所有大颗粒都分解成不规则的块状结构。随着压力的增加，结晶结构和短程有序结构都逐渐被破坏。这种结构破坏归因于淀粉糊化，而糊化取决于ISM压力。ISM处理能够任意调节糊化粘度并增加马铃薯淀粉的回生值。此外，ISM处理提高了淀粉糊的模量和机械刚性。这些结果表明，ISM处理可能是在工业水平上改性含有大颗粒淀粉的一种潜在选择。
工业相关性：微射流处理是一种可用于改善淀粉功能特性的物理技术。然而，由于设备的缺陷，传统的微射流仪在实验室和工业规模下都难以处理含有大颗粒的淀粉。我们实验室近期设计的“工业规模微射流仪”（ISM）可用于处理含有大颗粒的马铃薯淀粉。这项初步研究给出了重要的启示，即通过安全且简单的微射流技术可以拓宽马铃薯淀粉的实际工业应用，并且ISM可用于加工全谷物面粉以获得营养产品。
A recently designed "industry-scale microfluidizer" (ISM) was applied to treat potato starch, then the structural and physicochemical properties of potato starch treated at different ISM pressure (30, 60, 90, and 120 MPa) were investigated. As ISM pressure increased, starch granule size was firstly increased, and subsequently declined at 120 MPa. A remarkable destruction of starch granules was observed, and all the large granules disintegrated into irregular block-like structures after treatment at 120 MPa. Both crystalline and short-range ordered structure were progressively disrupted with the increase of pressure. The structural destruction was attributed to starch gelatinization, which depended on ISM pressure. ISM treatment could arbitrarily adjust pasting viscosity and increase setback value of potato starch. Moreover, moduli and mechanical rigidity of starch pastes were enhanced by ISM treatment. These results implied that ISM treatment could be a potential choice to modify starch containing large granules at an industrial level.Industrial relevance: Microfluidization was an available physical technique to improve functional properties of starch. However, it was difficult for conventional microfluidizer to treat starch containing big granule sizes both in laboratory and industrial scale owing to the drawbacks of devices. A recently designed "industry-scale microfluidizer" (ISM) in our laboratory could be applied to treat potato starch containing large granules. This preliminary study gave important indications that the practical industrial applications of potato starch could be widen by safe and simple microfludization technology, and ISM may be used for processing whole grains flour to obtain nutritional products.