摘要
对黄腐酸的发酵制备及提取工艺进行了研究 .以锯末、玉米面和棉籽油为主要原料进行发酵 ,通过正交实验得出了从发酵产物中提取黄腐酸的最佳条件 :wNaOH=3.5 % ,6 0℃ ,浸提 1.5h ,然后以盐酸调 pH至 2 .0 ,酸析得到黄腐酸 ,产率可达 46 .9% .另外 ,利用KMnO4 氧化降解法从碱提取液中进一步回收黄腐酸 ,其条件为 :cKMnO4=0 .2 5mol/L ,pH12 ,85℃ ,氧化 0 .
The fermenting preparation and extracting of fulvic acid are studied. The technological parameter of fermenting fulvic acid is given with sawdust,cornmeal and cottonseed oil as main raw material. The orthogonal experiment shows the optimization conditions of extraction from fermenting products are w NaOH =3.5%, extracted at 60 ℃ for 1 5 h, then adjusts acidity with HCl to pH=2.0, the yield of fulvic acid is 46.9%. Fulvic acid is further extracted from alkanine extract with KMnO 4 oxydative degradation under the condition: c KMnO 4 =0.25 mol/L,pH=12, 85 ℃ ,oxydative degradated for 0.5 h.
出处
《烟台大学学报（自然科学与工程版）》
CAS
2000年第3期205-209,共5页
Journal of Yantai University(Natural Science and Engineering Edition)
关键词
黄腐酸
发酵
制备
提取
氧化降解
腐植酸
fulic acid
fermentation
extraction
oxydative degradation
