Abstract
Exclusively Brazilian, the Caatinga biome has been thus far a place of very few studies on the Basidiomycetes fungi. Due to its semiarid climate, fungi found in the region are likely to carry lignolytic enzymes which hold biotechnological potential to be used in industrial processes of agro-industrial residue bioconversion. This study performed a response surface statistical planning to optimize the secretion of enzymes such as laccase (Lac), lignin peroxidase (LiP) and manganese peroxidase (MnP) by Lentinus crinitus. Three variables were under analysis: different concentrations of barley and cassava residue, pH and temperature. MnP enzyme showed the highest enzymatic activity rate (23.5 IU/L). Additionally, MnP had the best results of enzyme secretion for substrate composition of 50% barley and 50% cassava, at pH 7 and temperature at 28°C for a 28-day incubation period. However, further studies are pivotal to test the efficiency in lignin bioconversion by the enzymes synthesized in this work and also to establish their usage pattern on a large scale.
Highlights
Brazilian Northeast region presents wide climate variations, from humid to semiarid
Due to its semiarid climate, fungi found in the region are likely to carry lignolytic enzymes which hold biotechnological potential to be used in industrial processes of agro-industrial residue bioconversion
This study performed a response surface statistical planning to optimize the secretion of enzymes such as laccase (Lac), lignin peroxidase (LiP) and manganese peroxidase (MnP) by Lentinus crinitus
Summary
An exclusive Brazilian biome, corresponds basically to the semiarid region, which is hot and dry. Góes-Neto et al [1], after carrying researches on lignolytic Aphyllophorales fungi in Serra da Jibóia, a humid forest area in the semiarid in Bahia State, observed that both Caatinga and Mata Atlântica territory may be similar in biodiversity. The semiarid and Caatinga, in comparison to other regions and biomes, are less studied in relation to the number of researches done and published on Agaricomycetes diversity [2]
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