生物质化学工程Issue(3)：48-52,5.DOI:10.3969/j.issn.1673-5854.2014.03.010
马占相思栲胶浓胶波美度与浓度换算关系及浸提、磺化工艺研究
Extraction and Sulfonation Technology of Acacia mangium Tannin Extracts, and the Correlation Between Baume Degree of Tannin Extracts and Concentration
黄仁整 1邹猛 1梁发星1
作者信息
- 1. 广西武鸣栲胶厂，广西 南宁 530001
- 折叠
摘要
Abstract
Acacia mangium tannin extract is a new tannin variety developed in recent years. The process parameters of A. mangium tannin extract are studied in this paper. The results show thas the relation of the baume degree ( y,oBé) and concentration (kg/L) at 20 ℃ is: y =1. 2 +40x. And the relation of the baume degree(y) and concentration at different temperature(y’) is:y=y’+(T-20)/15. Extraction process was that 400 g of A. mangium barks with water absorption rate of 210% were extracted with 1 200 mL water and then 800 mL of water in the following steps. First digestion extract temperature is 100℃, and last digestion extract temperature is 128℃. The extract time is 12 h, sodium pyrosulfite which is 1. 8% of gas dried materials weight is added. The yield of tannin extract is 81. 9%, and the sield of tannins is 90. 6%. Sulfonation process is that sodium pyrosulfite ( Na2 S2 O5 ) which is 6% of extract solution oven dried weight is added, and the reaction is carried on at 85℃for 2 h. The tannin content of sulphonated tannin extract is 67. 8%, insoluble content is 3. 2%, pH value is 4. 5, and Lovibond color is 9. 6. Other processes are the same as Waxberry tannin extracts production.关键词
马占相思/栲胶/工艺Key words
Acacia mangium/tannin/technology分类
化学化工引用本文复制引用
黄仁整,邹猛,梁发星..马占相思栲胶浓胶波美度与浓度换算关系及浸提、磺化工艺研究[J].生物质化学工程,2014,(3):48-52,5.
