出芽短梗霉CH-1菌株在泥炭水解物上同步产普鲁兰多糖及对金属的生物吸附作用
Simultaneous production of pullulan and biosorption of metals by Aureobasidium pullulans strain CH-1 on peat hydrolysate.
作者信息
Radulović Milanka D, Cvetković Olga G, Nikolić Snezana D, Dordević Dragana S, Jakovljević Dragica M, Vrvić Miroslav M
机构信息
Department of Chemistry, IChTM, Njegoseva 12, P.O. Box 473, 11001 Belgrade, Serbia.
出版信息
Bioresour Technol. 2008 Sep;99(14):6673-7. doi: 10.1016/j.biortech.2007.11.053. Epub 2007 Dec 31.
It was demonstrated that during the growth of Aureobasidium pullulans strain CH-1 on the acid hydrolysate of peat from the Vlasina Lake, the content of metals (Cu, Fe, Zn, Mn, Pb, Cd, Ni and Cr) decreased due to biosorption. The reduction in the metal content was found to be in the range (%): 38.2-62.2, 67.7-97.3, 0.02-62.05, 0.05-23.97, 0.16-4.24, 3.45-51.72, 1.18-35.82, 0.86-44.44, for Cu, Fe, Zn, Mn, Pb, Cd, Ni and Cr, respectively. During this process, the metals were accumulated in the biomass, while pullulan, an extracellular polysaccharide produced by Aureobasidium pullulans strain CH-1, was found not to bind the above-mentioned metals.
结果表明，在出芽短梗霉CH-1菌株于弗拉西纳湖泥炭酸水解产物上生长期间，由于生物吸附作用，金属（铜、铁、锌、锰、铅、镉、镍和铬）含量降低。金属含量的降低幅度（%）分别为：铜38.2 - 62.2、铁67.7 - 97.3、锌0.02 - 62.05、锰0.05 - 23.97、铅0.16 - 4.24、镉3.45 - 51.72、镍1.18 - 35.82、铬0.86 - 44.44。在此过程中，金属在生物质中积累，而出芽短梗霉CH-1菌株产生的胞外多糖普鲁兰多糖未发现与上述金属结合。
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