3株甲醛转化霉菌的碳源利用特性

Metabolic characteristics of carbon sources of three strains by formaldehyde-degrading fungi

研究了3株甲醛转化霉菌Trichoderma viride H1,Penicillium javanicum H2,Aspergillus flavus H4在不同碳源条件下对甲醛的转化特性.结果表明,3菌株都能利用4种复合碳源(0.1%甲醛+10%蔗糖,0.1%甲醛+10%麦芽糖,0.1%甲醛+10%淀粉,0.1%甲醛+10%葡萄糖)并转化甲醛,其转化率分别在99.6%、74.9%、99.3%以上,且都能以甲醛为唯一碳源并转化甲醛,其转化率分别为88.4%、64.1%、63.0%.菌株H1测到菌丝干重的增长.

The formaldehyde-degradation characteristics of three strains of formaldehyde-degrading fungi （Trichoderma viride H1, Penicillium javanicum H2, Aspergillus flavus H4） in different carbon sources media was studied. Four kinds of complex carbon sources （0.1% formaldehyde with 10% sucrose, 10% maltose, 10% starch, and 10% glucose, respectively） could be used by the three strains of formaldehyde-degrading fungi and the formaldehyde degradation rate were arrived at 99.3%, 70.1% and 99.7%, respectively. The results of using formaldehyde as the sole carbon source showed that the formaldehyde degradation rate were 88.4%, 64.1% and 63.0%, respectively. The growth of the mycelium of H1 was obtained.