Ultrasound pretreatment on soluble dietary fiber-polyphenol from lotus root: Preparation, interaction, and characterization
Year: 2025
Type: article
Abstract: : Complexation with phenolic compounds affects the composition and functionality of soluble dietary fiber (SDF) in lotus root, so the specific ultrasound pretreatment was carried out in this study to investigate its impact on the interaction between these polysaccharides and polyphenols (PP). The SDF-PP complex, ultrasound-treated SDF-PP complex (UT/SDF-PP), and their physical mixture (SDF&PP) were respectively prepared and identified. It was found that PP was primarily bound to SDF via hydrogen bonds, the ultrasonication increased the phenolic content in complex by 78.95% but without altering their combination mode. Even though the apparent structure of dietary fibers was changed by ultrasound indicating smoother and flatter, it slightly reduced the molecular weight and the thermal stability of SDF complex. Moreover, in vitro adsorption experiments have demonstrated that ultrasound significantly enhanced the abilities of SDF complex to adsorb lipid and cholesterol. Therefore, it can be conjectured that suitable ultrasound pretreatment has the potent to promote the combination of naturally active compounds in food ingredients and improve their functional properties.
Source: LWT
Authors: Li Li, Zhan Zheng, Haiqi Zhong, Juan Xiao, Shuyi Li, Zhenzhou Zhu
Institutions: Wuhan Polytechnic University, Hainan University
Language: English
Subfield: Nutrition and Dietetics
Field: Nursing
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $3,240
OpenAlex ID: W4410108951