魔芋葡甘聚糖/纳米四氧化三铁复合溶胶的流变性能  

RHEOLOGICAL PROPERTIES OF KONJAC GLUCOMANNAN/NANO-FE3O4 COMPOSITE SOL

作　　者：谢建华[1,2,3] 谢丙清 郑璐嘉[1] 郑俊峰 高志强[1] 庞杰[3] XIE Jian-hua;XIE Bing-qing;ZHENG Lu-jia;ZHENG Jun-feng;GAO Zhi-qiang;PANG Jie(Department of Food and Biology Engineering,Zhangzhou Profession and Technology Institute,Zhangzhou,Fujian 363000,China;The Applied Technical Engineering Center of Further Processing and Safety of Agricultural Products,Higher Education Institutions in Fujian Province,Zhangzhou,Fujian 363000,China;College of Food Science,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China)

机构地区：[1]漳州职业技术学院食品工程学院,福建漳州363000 [2]农产品深加工及安全福建省高校应用技术工程中心,福建漳州363000 [3]福建农林大学食品科学学院,福建福州350002

出　　处：《井冈山大学学报（自然科学版）》2020年第3期24-28,共5页Journal of Jinggangshan University (Natural Science)

基　　金：国家自然科学基金项目(31471704,31271837,31301599);福建省科技计划项目(2018N2002);福建省自然科学基金项目(2014J01378);福建省中青年教师教育科研项目(JA15697)。

摘　　要：为了研究魔芋葡甘聚糖/纳米Fe3O4静电纺丝膜,运用流变仪分析纳米Fe3O4对KGM溶胶流变性能的影响,以期为制备复合的纺丝液的浓度和配比提供了指导。结果表明:KGM/纳米Fe3O4复合溶胶是一种假塑性流体;复合溶胶的粘度、线性粘弹区域范畴、屈服应力值、模量等四个指标均与纳米Fe3O4掺杂比的掺杂比呈正比关系,从剪切性质分析其体系纳米Fe3O4质量浓度不应超过1.2%。通过频率扫描分析,纳米Fe3O4与KGM之间存在相互作用,随着纳米Fe3O4粒子含量的增加使得与KGM作用增加,从而使体系形成稳定网络结构,使复合溶胶的稳定性更高,因此将魔芋葡甘聚糖/纳米Fe3O4制备静电纺丝膜具有一定可行性。The composite membrane of Konjac Glucomannan(KGM)/Nano-Fe3O4 was prepared by electrospinning technology,and rheometer was used to study the effect of nano-Fe3O4 on the rheological property of KGM sol,providing an optimized concentration and proportion of spinning solution for the preparation of composite membrane.The results showed that the KGM/Nano-Fe3O4 composite membrane is a kind of pseudoplastic fluid,its viscosity,linear viscoelastic region,yield stress and modulus are proportional to the doping ratio of nano-Fe3O4.And the mass concentration of nano-Fe3O4 in the composite membrane should not be more than 1.2%to obtain the fine rheological property.The frequency scanning analysis demonstrated that the increasing concentration of nano-Fe3O4 enhanced the interaction between nano-Fe3O4 and KGM,making the composite sol more stable by forming stable network structure.Therefore,it was feasible to prepare the composite membrane of KGM/Nano-Fe3O4 by electrospinning technology.

关 键 词：魔芋葡甘聚糖 纳米四氧化三铁 流变性能 

分 类 号：TS201.7[轻工技术与工程—食品科学]