Improving the physicochemical and <i>in vitro</i> hypolipidemic properties of soluble dietary fiber in camellia seed residue by a cellulose degrading fungus YC49
Chaoran Yang, Ying Ma, Yi Chen, Jianhua Xie, Xiaobo Hu, Qiang Yu
Abstract
hypolipidemic properties of CSR SDF were improved. Scanning electron microscopy, X-ray diffraction, molecular weight distribution and flow properties showed that fermentation endowed F-SDF (after fermentation) with a more porous microstructure, lower crystallinity, smaller molecular weight and higher viscosity. The results of monosaccharide composition and Fourier transform infrared spectroscopy pointed to differences in the monosaccharide percentages and functional group types between CK-SDF (control) and F-SDF. These alterations combined to achieve improvements in the hydration properties and hypolipidemic activities of CSR SDF, including water holding capacity, oil retention capacity, cholesterol adsorption capacity, pancreatic lipase inhibition capacity, and bile acid binding capacity. Overall, the results indicated that YC49 could be used as an ideal strain for the fermentation modification of SDF in CSR, and F-SDF has the potential to serve as a hypolipidemic component in functional foods.