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J.S. Valle

Publications of : J.S. Valle
Plant Genetics   Research Article

Lentinus crinitus strains respond differently to cultivation pH and temperature

Fungus ability to respond to environmental changes allows their adaptation to a wide variety of conditions such as pH, temperature, light, nutrient availability, chemicals, and competition among species. Temperature and pH can affect fungal growth as well as their metabolism. Knowing these factors on fungus species is relevant for the development of biotechnological.. Read More»

Genet. Mol. Res. 17(1): gmr16039885

DOI: 10.4238/gmr16039885

Human Genetics   Research Article

Screening of basidiomycetes in submerged cultivation based on antioxidant activity

    S.H. Umeo, G.P.N. Souza, P.M. Rapachi, D.M. Garcia, L.D. Paccola-Meirelles, J.S. Valle, N.B. Colauto and G.A. Linde

Submerged cultivation of medicinal basidiomycetes is a reproducible and efficient method of producing mycelia and metabolites. The antioxidant activity indicates its medicinal properties and is an important tool for basidiomycete screening. In this study, we analyzed the production of mycelial biomass and exopolysaccharides and the antioxidant activity of basidiomycete strains in submerged cult.. Read More»

Genet. Mol. Res. 14(3): 2015.August.19.25

DOI: 10.4238/2015.August.19.25

Microbial Genetics   Research Article

Effect of different compounds on the induction of laccase production by Agaricus blazei

    J.S. Valle, L.P.S. Vandenberghe,A.C.C. Oliveira, M.F. Tavares,G.A. Linde, N.B. Colauto, C.R. Soccol

Laccases are polyphenol oxidases produced by many fungi and have many applications in textile, food and beverage, and pulp and paper industries. Laccase production can be induced using aromatic or phenolic compounds that mostly affect the transcription of laccase-encoding genes. In this study, we analyzed laccase and biomass production by Agaricus blazei in the pres.. Read More»

Genet. Mol. Res. 14(4): 2015.December.1.40

DOI: 10.4238/2015.December.1.40

Plant Genetics   Research Article

Identification and characterization of genes related to cellulolytic activity in basidiomycetes

    A.F.N. Volpini, T. Thomazine, S.H. Umeo, G.A. Pereira, G.A. Linde, J.S. Valle, N.B. Colauto, F.G. Barcellos and S.G.H. Souza

Enzymes produced by basidiomycetes that are involved in the cellulose degradation process, and their respective codifying genes, must be identified to facilitate the development of novel biotechnological strategies and applications in the agro-industry. The objective of this study was to identify prospective cellulase-producing genes and characterize their cellulolytic activity, in order to elu.. Read More»

Genet. Mol. Res. 15(3): gmr.15038722

DOI: 10.4238/gmr.15038722

Plant Genetics   Research Article

Iron translocation in Pleurotus ostreatus basidiocarps: production, bioavailability, and antioxidant activity

    M.E. Yokota1, P.S. Frison1, R.C. Marcante1, L.F. Jorge1, J.S. Valle1, D.C. Dragunski2, N.B. Colauto1 and G.A. Linde10

Translocation of minerals from substrate to mushrooms can change the medicinal characteristics, commercial value, and biological efficiency of mushroom. In the present study, we demonstrated that addition of iron to the substrate reduces the yield of Pleurotus ostreatus mushroom. The biological efficiency of the mushroom varied from 36.53% on the unsupplemented substrate to 2.08% for the substr.. Read More»

Genet. Mol. Res. 15(1): gmr.15017888

DOI: 10.4238/gmr.15017888

Plant Genetics   Research Article

Use of sugarcane molasses by Pycnoporus sanguineus for the production of laccase for dye decolorization

    R.A. Marim, A.C.C. Oliveira, R.S. Marquezoni, J.P.R. Servantes,B.K. Cardoso, G.A. Linde, N.B. Colauto and J.S. Valle

Pycnoporus sanguineus is a white-rot basidiomycete that produces laccase as the only oxidoreductase; enzyme synthesis depends on cultivation variables, and fungal species and strain. Laccases have wide substrate specificity, oxidize a broad range of compounds, and show potential for use in dye decolorization. We evaluated laccase production in a recently isolated st.. Read More»

Genet. Mol. Res. 15(4): gmr15048972

DOI: 10.4238/gmr15048972

Human Genetics   Research Article

Optimum conditions for inducing laccase production in Lentinus crinitus

    J.S. Valle1,2, L.P.S. Vandenberghe2, T.T. Santana1, P.H. Almeida1, A.M. Pereira1, G.A. Linde1, N.B. Colauto1 and C.R. Soccol2

Laccases are environmentally friendly alternatives in many important applications such as in bioremediation, biopulping, textile, and the food industry. They have wide substrate specificity, can oxidize a broad range of compounds, and show potential for use in various industrial processes. Therefore, developing methods to increase laccase production is important. In the current study, we aimed .. Read More»

Genet. Mol. Res. 13(4):

Plant Genetics   Research Article

Genetic diversity and pectinolytic activity of epiphytic yeasts from grape carposphere

The genetic diversity of epiphytic yeasts from grape carposphere is susceptible to environmental variations that determine the predominant carposphere microbiota. Understanding the diversity of yeasts that inhabit grape carposphere in different environments and their pectinolytic activity is a way to understand the biotechnological potential that surrounds us and he.. Read More»

Genet. Mol. Res. 16(2): gmr16029698

DOI: 10.4238/gmr16029698