Related Experiment Video
Updated: Aug 26, 2026

Comparative Study on the Polysaccharide Contents and Antioxidant Activities of Hippophae rhamnoides subsp. sinensis and Hippophae gyantsensis
Published on: August 15, 2025
Interaction between Hovenia dulcis polysaccharides and dihydromyricetin: A systematic study on structure, in vitro
Wenhui Shao1, Ying Shu1, Jingbo Zhu1
1College of Food Science and Technology, Hebei Agricultural University, 289 Lingyusi Road, Baoding, Hebei 071001, PR China.
None:
Polysaccharide-flavonoid interactions are integral to the health-promoting effects of plant-derived food. This study investigated the structural characteristics, in vitro digestive stability, prebiotic potential, and in vitro fermentation characteristics of covalent (H70D-C) and non-covalent (H70D-NC) complexes formed between Hovenia dulcis polysaccharides (HDPs70) and dihydromyricetin (DMY), with particular emphasis on the influence of the binding mode. The results showed that H70D-C exhibited a significantly greater DMY-binding capacity (580.41 ± 1.12 mg DMY/g) than H70D-NC (421.06 ± 1.36 mg DMY/g). Infrared spectroscopy confirmed that covalent bonding formed ester bonds, and hydrogen bonds were the main driving force of non-covalent interactions. The covalent complex H70D-C exhibits superior enzyme inhibitory activity, antioxidant activity and thermal stability. The results of in vitro digestion showed that all components could pass through the gastrointestinal tract smoothly, and HDPs70 could effectively protect DMY throughout the digestion process. Moreover, all three polysaccharides promoted the growth of beneficial microbes. DMY incorporation increased the abundance of Bifidobacterium and decreased the level of Escherichia-Shigella, and both binding modes markedly improved the gut microbial community structure. Collectively, these findings support the development of functional foods derived from Hovenia dulcis.
Related Concept Videos
Carbohydrate Digestion
Cellulose and Pectic Polysaccharides
As a cell matures, its cell wall specializes according to its type. For example, the parenchyma cells of...
What is Monogastric Digestion?
Oral Hypoglycemic Agents: α-Glucosidase Inhibitors
Acarbose and miglitol are typically...
Chemistry of Carbohydrates
Protein Digestion
