摘要
以五倍子浸提液为原料进行了颗粒白土、载体活性炭提纯效果实验,提出颗粒白土与载体活性炭组合柱物理吸附法提纯工艺,制备出食用级高纯单宁。结果表明,以95%乙醇浸提五倍子所得浸提液,60℃下,以30mL/min的速率流经颗粒白土与活性炭柱吸附处理后,制备样品单宁纯度≥98%,色值0.6(罗维邦总色号),主要金属离子均≤0.5μg/g。
Purification of tannin from Chinese gall nut was studied through treatment with granulated Fuller＇ earth and activated carbon. The results indicated that the sample with purity of tannin ≥98 %, color 0. 6 （ Lovibond total color）, content of main metal ions ≤〈0.5 μg/g was obtained respectively by extracting Chinese gall nut solution by 95 % alcohol at 60 ℃, 30 mL/min flow rate with combined columns of granulated Fuller＇earth and activated carbon.
出处
《林产化学与工业》
EI
CAS
CSCD
2008年第6期79-82,共4页
Chemistry and Industry of Forest Products
基金
国家林业局"948"创新项目(2004-C04)
关键词
五倍子单宁
颗粒白土
载体活性炭
物理吸附法
食用级单宁
gall nut tannin
granulated Fuller＇earth
active carbon
physical absorption method
food grade tannin
