中国食品添加剂Issue(5)：124-128,5.
原花青素高聚体水解
Hydrolysis of proanthocyanidins polymer
赵平 1张月萍 2任鹏1
作者信息
- 1. 河北省药物化工工程技术研究中心,石家庄050018
- 2. 河北科技大学化学与制药工程学院,石家庄050018
- 折叠
摘要
Abstract
The antioxidant activity of proanthocyanidins largely depends on the degree of polymerization. Proanthocyanidins polymer antioxidant activity is not as good as oligomer and the polymer is difficult to be absorbed by human body. Natural grape seeds Proanthocyanidins could be fully used through hydrolyzing the proanthocyanidins polymer into oligomer or monomer to have higher biological activity. Proanthocyanidins extracted from grape seeds were purified through AB -8 macroporous resin and gradient eluted with 33% , 35% , 37% , 39% and 41% ethanol and hydrolyzed with H2 SO3. Hydrolysis effect was evaluated through average degree of polymerization, free radical scavenging rate and VC e-quivalent concentration. Hydrolysis mechanism and medium influence were discussed. The average degree of polymerization was reduced significantly and the antioxidant activity was improved. No byproduct was found in the hydrolysis product analyzed with spectrophotometry. The hydrolysis products were mainly OPC.关键词
原花青素/高聚体/平均聚合度/抗氧化活性/分级分离/水解产物Key words
proanthocyanidins/ polymer/ average degree of polymerization/ antioxidant activity/ fractionation/ hydrolysis product分类
能源科技引用本文复制引用
赵平,张月萍,任鹏..原花青素高聚体水解[J].中国食品添加剂,2012,(5):124-128,5.
