麦芽糖假丝酵母10-4降解酚类化合物的研究

为了探索微生物处理多种酚类污染物的可能性，研究了高效脱酚菌麦芽假丝酵母１０－４对１５种酚类化合物的降解能力及降解生理。该菌能利用二元酚及三元酚为生长碳源，降解３种二元酚最快，３００ｍｇ／Ｌ浓度４８ｈ能去除９７％￣９９％，甲酚、硝基酚和氨基酚均不能作为生长碳源，硝基酚和氨基酚可以作为生长氮源。在培养基中添加碳，氮源可以明显促进该菌的生长和提高对这些取代酚的降解能力，３００ｍｇ／Ｌ浓度的单硝基酚可去除

Study on Degradation of Phenolic Compounds by Candida maltosa

egradation of 15 kinds of phenolic compounds by Candida maltosa 10 4 was studied. This yeast can utilize dihydric phenol and trihydric phenol as sole carbon source for growth. Three kinds of dihydric phenol (300 mg/L)can be degraded 97%-99% in 48 hours. Nitrophenol,aminophenol and cresol can not be used as sole carbon source, but nitrophenol and aminophenol can be used as nitrogen source for growth. With glucose as carbon source and (NH 3) 2SO 4 as nitrogen source, the growth and degradation activity can be promoted obviously. Removal of mononitrophenol (300 mg/L)can reach 93%- 100%,2 or 4 cresol 86% and monoaminophenol 68%-84%. With substituting groups increase, degradation of phenolic compounds become slower. Cells adapted by 1200 mg/L of phenol can oxidate high concentration (2800 mg/L) of phenol and 15 kinds of phenolic compounds (300 mg/L) to different degree.