期刊论文

Optimization of high shear emulsification assisted extraction of insoluble dietary fiber from lotus leaf and its physical properties

中文

天然产物研究与开发

1001-6880

2021

33

02

275-281

10.16333/j.1001-6880.2021.2.012

湖南省大学生创新创业训练计划（2019105410 33）； 湖南省现代农业产业技术体系建设专项（2019-47-2130 106）； 湖南中医药大学双一流食品科学与工程学科建设经费（4901020000200902）；

本校为第一机构

为扩大荷叶在食品加工中的开发应用性,研究采用高剪切乳化技术辅助提取荷叶水不溶性膳食纤维（insoluble dietary fiber,IDF）,优化提取工艺;测定其基本物性,并与常规粉碎、球磨式粉碎处理进行对比。结果表明,在剪切转速8 000 rpm剪切时间4 min,酸液浓度0.25 mol/L,酸解温度45℃条件下荷叶IDF得率最高,为83.84%。此荷叶IDF水溶性13.81%,持水性5.65 g/g,持油性1.97 g/g,膨胀性1.93 mL/g。与球磨式粉碎相比,处理时间短,荷叶纤维呈束状、层次分明,荷叶纤维内质未被完全破坏;产品水溶性较低,持水性和膨胀性较高。高剪切乳化技术在食品纤维组分的加工中具有较好的应用潜力。

In order to expand the development of lotus leaf in food processing,insoluble dietary fiber (IDF) of lotus leaf was extracted by high shear emulsification.Its basic physical properties of the IDF were determined and compared with the IDF extracted by conventional smashing and ball grinding.The results showed that the lotus leaf IDF yield extracted by high shear emulsification was the highest (83.84%) at a shear speed of 8 000 rpm,a shear time of 4 min,an acid concentration of 0.25 mol/L,and an acid hydrolysis temperature of 45 ℃.The water solu...