Humic acid bleaching by white-rot fungi isolated from biosolids compost
โ Scribed by Tzafrir Granit; Yona Chen; Yitzhak Hadar
- Book ID
- 113910808
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 177 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0038-0717
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Pulp brightness gains obtained by fungal biobleaching are often decreased by dark MnOZ deposits which are formed by the biologically-mediated oxidation of Mn(I1). Oxalic acid extraction of OZdelignified kraft pulps bleached by several white-rot fungi was found to increase pulp brightness by up to 9.
The depolymerization of humic acids (HAs) obtained from low-rank coal (lignite) to fulvic acids (FAs) was investigated in a cell-free system (in vitro) using manganese peroxidase (MnP) from the white-rot fungus Clitocybula dusenii b11. MnP was produced in surface cultures of C. dusenii which were in