College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, PR China; Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fuzhou, Fujian, PR China; China-Ireland International Cooperation Centre for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, Fuzhou, PR China.
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, PR China; Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fuzhou, Fujian, PR China; China-Ireland International Cooperation Centre for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, Fuzhou, PR China.
Food Chem Toxicol. 2019 Jun;128:81-88. doi: 10.1016/j.fct.2019.03.052. Epub 2019 Apr 2.
Lotus seed amylose-fatty acid complexes were prepared using high hydrostatic pressure and the relationship between their structural properties and digestibility was investigated. The formation of lotus seed amylose-fatty acid complexes increased the values of weight molar mass (Mw), number molar mass (Mn), polydispersity index and resistant starch content compared to those of amylose controls. Mw and Mn values of lotus seed amylose and complexes decreased with an increase in high hydrostatic pressure from 500 MPa to 600 MPa, suggesting that the lotus seed amylose was decomposed into short glucan chains. The presence of single helical lotus seed amylose-fatty acid complexes and double helical retrograded amylose was investigated using Raman spectroscopy and imaging. The results from Raman spectra and in vitro digestion showed that the content of both single helical LSA-fatty acid complexes and double helical retrograded LSA were responsible for digestibility of the complex matrix.
采用超高压法制备了莲子直链淀粉-脂肪酸复合物，并研究了其结构特性与消化性之间的关系。与直链淀粉对照相比，莲子直链淀粉-脂肪酸复合物的形成增加了重均分子量（Mw）、数均分子量（Mn）、多分散指数和抗性淀粉含量的值。随着超高压从 500 MPa 增加到 600 MPa，莲子直链淀粉和复合物的 Mw 和 Mn 值降低，这表明莲子直链淀粉被分解成短的葡聚糖链。采用拉曼光谱和成像研究了单螺旋莲子直链淀粉-脂肪酸复合物和双螺旋回生直链淀粉的存在。拉曼光谱和体外消化的结果表明，单螺旋 LSA-脂肪酸复合物和双螺旋回生 LSA 的含量均与复合物基质的消化性有关。
