FILAMENTOUS FUNGI OF WASTE BIOMASS OF HIGHER WATER PLANTS - Biochemistry and Biotechnology: Research and Development - page 161

Figure 1. Frequency of occurrence of different micromycetes.

Peculiarities of cellulose degradation by filamentous fungi are linked with such factors
like cellulose structure and genesis, which determine to considerable extent the specificity of
cellulose digestion. There are numerous data about influence of cultivation conditions on
cellulase activity. It is necessary to note quality and quantity of used sources of nitrogen and
carbon among main factors impacting biosynthesis of cellulase. It is necessary to develop
such medium for cultivation of fungi-producers of cellulase that would secure biomass
accumulation and high enzymatic biosynthesis.

Table 1. Comparative activity of formation of endoglucanase at micromycetes
cultivation on Mandels and Farid media

№ Variants Endoglucanase activity, U/ml

Farid medium + filter
paper

Mandels medium +
filter paper

1 Aspergillus niger 1.6 2.4

2 Aspergillus terreus 3.8 4.8

3 Aspergillus flavus 1.6 2.2

4 Penicicillium griseo-roseum 2.4 4.3

Table 2. Comparative activity of formation of endoglucanase at micromycetes
cultivation on Mandels and Farid media with addition of HWP biomass

№ Variants Endoglucanase activity, U/ml

Farid medium + 2%
pistia

Mandels medium +
2% pistia

1 Aspergillus niger 2.7 3.9

2 Aspergillus terreus 9.2 9.5

3 Aspergillus flavus 2.6 3.1

4 Penicicillium griseo-

roseum

3.9 4.5