Effect of the nutrient composition on dye decolorisation and extracellular enzyme production by Lentinus edodes on solid medium

被引：55

作者：

Hatvani, N ^{[1
]}

Mécs, I ^{[1
]}

机构：

[1] Zoltan Bay Fdn Appl Res, Inst Biotechnol, H-6701 Szeged, Hungary

来源：

ENZYME AND MICROBIAL TECHNOLOGY | 2002年 / 30卷 / 03期

关键词：

dye decolorisation; laccase; Lentinus edodes; manganese peroxidase; nitrogen; Orange II; oak sawdust Poly R-478; Remazol Brilliant Blue R;

D O I：

10.1016/S0141-0229(01)00512-9

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The production of laccase and manganese peroxidase (MnP) by Lentinus edodes (Shiitake) was studied on a solid medium in conjunction with the decolorisation of the dyes Poly R-478, Remazol Brilliant Blue R (RBBR) and Orange II. L. edodes mycelium was able to decolorise all three dyes. Nitrogen (N) concentration-dependence studies with three N sources (ammonium chloride, peptone and malt extract) revealed that the range 1-3 mM N was optimum for both enzyme production and dye degradation, regardless of the N source or dye used. MnP production and the decolorisation of Poly R-478 and Orange 11 were inhibited completely above 8 mM N. The enzymatic processes also exhibited a Mn concentration dependence; 20 muM Mn proved optimum for dye decolorisation. The addition of natural supplements (oak sawdust and wheat straw) greatly enhanced MnP production. Oak sawdust had a positive effect on the decolorisation of each of the dyes investigated. A medium containing 10 g/l starch, 3.5 g/l malt extract and 20 g/l oak sawdust proved optimum for the enzymatic processes investigated. (C) 2002 Elsevier Science Inc. All rights reserved.

引用

页码：381 / 386

页数：6

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