School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Guangdong Food Green Processing and Nutrition Regulation Technology Research Center, Guangzhou 510641, China.
School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Guangdong Food Green Processing and Nutrition Regulation Technology Research Center, Guangzhou 510641, China; Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
Int J Biol Macromol. 2022 Nov 30;221:644-652. doi: 10.1016/j.ijbiomac.2022.09.051. Epub 2022 Sep 12.
Galangal is rich in flavonoids and polysaccharides but underutilized. In this study, galangal flavonoids and polysaccharides (GP-HN and GP-UN) were obtained by segmented extraction, used for chemical composition determination/structural characterization, and constructed for the emulsion delivery system. The results showed that galangin accounted for 71.45 % of total flavonoids. GP-HN and GP-UN were prepared by enzymatic-assisted high-temperature and ultrasonic extraction, which were low-molecular-weight pectin-type polysaccharides mainly constructed by galacturonic acid, galactose, and arabinose. GP-UN was the best emulsifier due to interfacial activities, emulsifying properties, interfacial resistance to bile salts displacement abilities, and anti-lipid digestion abilities of GPs. GP-UN emulsion could stably deliver flavonoids. This study presented a method for orderly reorganizing flavonoids and polysaccharides, guiding for utilization of whole bioactive components in galangal.
高良姜富含类黄酮和多糖，但未得到充分利用。本研究采用分段提取法获得高良姜类黄酮和多糖（GP-HN 和 GP-UN），用于化学成分测定/结构表征，并构建乳液输送系统。结果表明，高良姜中的总类黄酮中 71.45%为高良姜素。GP-HN 和 GP-UN 采用酶辅助高温超声提取法制备，主要由半乳糖醛酸、半乳糖和阿拉伯糖构成的低分子量果胶型多糖。由于具有界面活性、乳化性能、界面耐胆汁盐置换能力和抗脂解能力，GP-UN 是最佳的乳化剂。GP-UN 乳液能稳定地输送类黄酮。该研究提出了一种有序重组类黄酮和多糖的方法，为高良姜中全生物活性成分的利用提供了指导。
