Yang Seung-Ok, Sodaneath Hong, Lee Jung-In, Jung Hyekyeng, Choi Jin-Hee, Ryu Hee Wook, Cho Kyung-Suk
a Department of Environmental Science and Engineering , Ewha Womans University , Seoul , Republic of Korea.
b Department of Chemical Engineering , Soongsil University , Seoul , Republic of Korea.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2017 Jul 29;52(9):862-872. doi: 10.1080/10934529.2017.1316164. Epub 2017 May 2.
The mycoremediation has been considered as a promising method for decolorizing dye wastewater. To explore new bioresource for mycoremediation, a new white-rot fungus that could decolorize various dyes commonly used in textile industries was isolated, and its ligninolytic enzyme activity and decolorization capacity were characterized. The isolated CBR43 was identified as Trametes versicolor based on the morphological properties of its fruit body and spores, as well as through partial 18S rDNA gene sequences. Isolated CBR43 displayed high activities of laccase and Mn-dependent peroxidase, whereas its lignin peroxidase activity was relatively low. These ligninolytic enzyme activities in potato dextrose broth (PDB) medium were enhanced by the addition of yeast extract (1-10 g L). In particular, lignin peroxidase activity was increased more than 5 times in the PDB medium amended with 10 g L of yeast extract. The CBR43 decolorized more than 90% of 200 mg L acid dyes (red 114, blue 62 and black 172) and reactive dyes (red 120, blue 4, orange 16 and black 5) within 6 days in the PDB medium. CBR43 decolorized 67% of 200 mg L acid orange 7 within 9 days. The decolorization efficiencies for disperse dyes (red 1, orange 3 and black 1) were 51-80% within 9 days. The CBR43 could effectively decolorize high concentrations of acid blue 62 and acid black 172 (500-700 mg L). The maximum dye decolorization rate was obtained at 28°C, pH 5, and 150 rpm in the PDB medium. T. versicolor CBR43 had high laccase and Mn-dependent peroxidase activities, and could decolorize a wide variety of dyes such as acid, disperse and reactive textile dyes. This fungus had decolorizing activities of azo-type dyes as well as anthraquinone-type dyes. T. versicolor CBR43 is one of promising bioresources for the decolorization of textile wastewater including various dyes.
真菌修复被认为是一种很有前景的印染废水脱色方法。为了探索用于真菌修复的新生物资源,分离出一种能使纺织工业中常用的各种染料脱色的新型白腐真菌,并对其木质素分解酶活性和脱色能力进行了表征。根据其子实体和孢子的形态特征以及部分18S rDNA基因序列,将分离出的CBR43鉴定为云芝。分离出的CBR43表现出较高的漆酶和锰依赖性过氧化物酶活性,而其木质素过氧化物酶活性相对较低。在马铃薯葡萄糖肉汤(PDB)培养基中添加酵母提取物(1 - 10 g/L)可提高这些木质素分解酶的活性。特别是,在添加10 g/L酵母提取物的PDB培养基中,木质素过氧化物酶活性增加了5倍以上。在PDB培养基中,CBR43能在6天内使200 mg/L的酸性染料(红色114、蓝色62和黑色172)和活性染料(红色120、蓝色4、橙色16和黑色5)脱色90%以上。CBR43能在9天内使200 mg/L的酸性橙7脱色67%。在9天内,分散染料(红色1、橙色3和黑色1)的脱色效率为51 - 80%。CBR43能有效使高浓度的酸性蓝62和酸性黑172(500 - 700 mg/L)脱色。在PDB培养基中,28°C、pH 5和150 rpm条件下可获得最大染料脱色率。云芝CBR43具有较高的漆酶和锰依赖性过氧化物酶活性,能使多种染料脱色,如酸性、分散性和活性纺织染料。这种真菌对偶氮型染料和蒽醌型染料都有脱色活性。云芝CBR43是用于含各种染料的纺织废水脱色的有前景的生物资源之一。