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生物质化学工程

生物质化学工程 ›› 2014, Vol. 48 ›› Issue (3): 48-52.doi: 10.3969/j.issn.1673-5854.2014.03.010

• 研究报告 • 上一篇    下一篇

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

黄仁整, 邹猛, 梁发星   

  1. 广西武鸣栲胶厂, 广西 南宁 530001
  • 收稿日期:2013-10-31 出版日期:2014-05-30 发布日期:2014-05-29
  • 通讯作者: 梁发星（1976- ），男，广西天等人，工程师，研究方向：栲胶新品种开发和栲胶深加工;联系电话：13877696846。
  • 作者简介:黄仁整（1962- ），男，广西武明人，工程师，研究方向：栲胶生产工艺研究；联系电话：13737059258

Extraction and Sulfonation Technology of Acacia mangium Tannin Extracts, and the Correlation Between Baume Degree of Tannin Extracts and Concentration

HUANG Ren-zheng, ZHOU Meng, LIANG Fa-xing   

  1. Guangxi Wuming Tannin Extract Factory, Nanning 530001, China
  • Received:2013-10-31 Online:2014-05-30 Published:2014-05-29

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摘要： 研究了马占相思栲胶主要生产工序的工艺参数。结果得出：马占相思栲胶浓胶在20 ℃时的波美度（y，°Bé）与浓度（x，kg/L）的关系式为： y=1.2+40x。不同温度（T，℃）下，实测波美度（y’）换算为20 ℃时的波美度（y，°Bé）与温度的关系式为： y=y’+（T-20）/15；浸提工艺：马占相思树皮400 g，吸水率210%，头步加水1 200 mL，以后每步加水800 mL，浸提首罐温度100 ℃，尾罐温度128 ℃，浸提时间12 h，添加焦亚硫酸钠量助浸为气干原料质量的1.8%，栲胶得率为 81.9%，单宁得率为90.6%。磺化工艺：在 85 ℃下，添加焦亚硫酸钠（Na2S2O5）量为栲胶绝干质量的6%，反应时间为 2 h，磺化后得栲胶产品的单宁含量为67.8%，不溶物为3.2%，pH值为4.5，总色度为9.6。其他工艺同杨梅栲胶生产工艺。

关键词: 马占相思, 栲胶, 工艺

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,°Bé) 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 (Na2S2O5) 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.

Key words: Acacia mangium, tannin, technology

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