脉冲电场辅助辛烯基琥珀酸酯化马铃薯淀粉的改性及其对糊化性能的影响。
Pulsed electric field assisted modification of octenyl succinylated potato starch and its influence on pasting properties.
机构信息
School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510640, China.
School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia.
出版信息
Carbohydr Polym. 2021 Feb 15;254:117294. doi: 10.1016/j.carbpol.2020.117294. Epub 2020 Oct 22.
The physicochemical properties and structural changes of potato starch esterified with octenyl succinic anhydride (OSA) assisted with pulsed electric field (PEF) were investigated. Results showed that PEF treatment during esterification resulted in a significant modification of pasting properties. The pasting temperature at 2-6 kV/cm reduced by 7.6-15.1 °C for PEF-assisted OSA starches but only by 3 °C for OSA modified starch without PEF treatment as compared to that of native starch. PEF-assisted esterification could reduce the reaction time and improve the reaction efficiency over the control by 6.1-39.1 %. A novel schematic model on structure-functionality relationship for PEF-assisted OSA modified starch was proposed. Structural disorganizations of starch induced lower pasting temperature and paste viscosity. The results suggest that PEF could be a potential eco-friendly and cost-effective physical technique to prepare starch products with desired paste behaviors and to broaden its application area especially in papermaking and textile industries.
研究了在脉冲电场（PEF）辅助下用辛烯基琥珀酸酐（OSA）对马铃薯淀粉进行酯化的物理化学性质和结构变化。结果表明，酯化过程中的 PEF 处理导致糊化性质发生了显著变化。与未经 PEF 处理的 OSA 改性淀粉相比，在 2-6 kV/cm 下，PEF 辅助 OSA 淀粉的糊化温度降低了 7.6-15.1°C，而未经 PEF 处理的 OSA 改性淀粉的糊化温度仅降低了 3°C。与对照相比，PEF 辅助酯化可以减少反应时间，提高反应效率 6.1-39.1%。提出了一种关于 PEF 辅助 OSA 改性淀粉结构-功能性关系的新示意图模型。淀粉结构的解团聚导致较低的糊化温度和糊化粘度。结果表明，PEF 可以成为一种潜在的环保和经济有效的物理技术，用于制备具有所需糊化性能的淀粉产品，并拓宽其应用领域，特别是在造纸和纺织工业。
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