Preliminary Study of Galloylating Modification of Procyanidin and Its Biological Activity
This research utilized Masson pine bark as raw materials and water as extracting agent for separation of proanthocyanidins, which contained procyanidin at 90.7 percent estimated by n-butyl alcohol/hydrochloric acid method. Through esterification, the galloyl radicals were inserted in procyanidin molecule structure, as the result of the galloylated modification procyanidin product was obtained. Through estimation of gallic acid quantity formed in the hydrolysate by HPLC method, the galloylation degree was calculated. After the research on biological activity difference between pre-galloylation and post-galloylation through the estimation of activity in radical-scavenging and complexation of transition metal ions, it was determined that the biological activity of procyanidin after modification was reinforced according to expectation.
Procyanidin Galloylating modification Biological activity.
Man XU Jia-hong CHEN Yong-mei WANG Dong-mei WU Zai-song WU Liang-liang ZHANG
Institute of Chemical Industry of Forest Products, CAF National Engineering Lab. for Biomass Chemical Utilization Key and Open Lab. on Forest Chemical Engineering, SFA Key Lab. of Biomass Energy and Material, Jiangsu Province
国际会议
南京
英文
754-759
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）