1. Compared to DP-AC-A2a, DP-AC-A2a1 has stronger prebiotic activity Fig. 5 (A), and the absorbance reached the highest value after being cultured for 16 h. Furthermore, the proliferation of B. animalis subsp. Lactis 3296 was measured 16 h after different concentrations of DP-AC-A2a1 were added to the culture medium. As shown in Fig. 5 (B), we observed that the proliferation of B. animalis subsp. Lactis 3296 is positively correlated with the content of DP-AC-A2a1 in the culture medium. When the content ? 2 % (w/v), the growth of B. animalis subsp. Lactis 3296 slows down, which may be due to the osmotic pressure of cells. Based on the aforementioned results, it can be inferred that the RG-I region in red dragon fruit pectin can promote the proliferation of B. animalis subsp. Lactis 3296. Based on the above research and the basic structure of pectin, it can be inferred that the RG-I region in red dragon fruit pectin has a rich side chain structure, and the side chain is mainly composed of ?-1,4-glycosidic linked galactan;Mw ; Rha;Food Chemistry,2019
2. Shorttime acoustic and hydrodynamic cavitation improves dispersibility and functionality of pectinrich biopolymers from citrus waste;J Chu;Journal of Cleaner Production,2022
3. An unusual GH1 betaglucosidase from marine sediment with beta-galactosidase and transglycosidation activities for superior galacto-oligosaccharide synthesis;P Deng;Applied Microbiology and Biotechnology,2020
4. Galacto-oligosaccharides: production, properties, applications, and significance as prebiotics;P M Duarte;Comprehensive Reviews in Food Science & Food Safety,2010
5. The inhibitory effects of a rhamnogalacturonan I (RG-I) domain from ginseng pectin on galectin-3 and its structureactivity relationship;X Gao;Journal of biological Chemistry,2013