<abstract xmlns="http://www.w3.org/1999/xhtml">Paper production generates large quantities of a solid waste known as papermaking sludge (PS), which needs to be handled properly for final disposal. The high amount of this byproduct creates expensive economical costs and induces environmental and ecological risks. Therefore, it is necessary to search uses for PS, in order to reduce the negative environmental impact and to generate a more valuable byproduct. Due to the cellulolytic composition of PS, this work evaluated a solid state fermentation process using it as substrate to obtain spores of the fungus <italic>Trichoderma asperellum</italic>. Optimal conditions to obtain <italic>T. asperellum</italic> spores were: 60% water content, 3% (w/w) salts (Nutrisol P® and Nutrisol K®), inoculum concentration at 1x105 spores/g, and pasteurized or sterilized PS. Under these conditions it was possible to obtain 2.37x109 spores/g. <italic>T. asperellum</italic> spores applied directly to pepper (<italic>Capsicum anuum</italic>) seeds without PS increased significantly seedling dry mass in greenhouse assays. This work suggests an alternative, economic and abundant substrate for production of <italic>T. asperellum</italic> spores.</abstract>

Paper production generates large quantities of a solid waste known as papermaking sludge (PS), which needs to be handled properly for final disposal. The high amount of this byproduct creates expensive economical costs and induces environmental and ecological risks. Therefore, it is necessary to search uses for PS, in order to reduce the negative environmental impact and to generate a more valuable byproduct. Due to the cellulolytic composition of PS, this work evaluated a solid state fermentation process using it as substrate to obtain spores of the fungus Trichoderma asperellum. Optimal conditions to obtain T. asperellum spores were: 60% water content, 3% (w/w) salts (Nutrisol P® and Nutrisol K®), inoculum concentration at 1x105 spores/g, and pasteurized or sterilized PS. Under these conditions it was possible to obtain 2.37x109 spores/g. T. asperellum spores applied directly to pepper (Capsicum anuum) seeds without PS increased significantly seedling dry mass in greenhouse assays. This work suggests an alternative, economic and abundant substrate for production of T. asperellum spores.

Solid-state fermentation of paper sludge to obtain spores of the fungus <italic>Trichoderma asperellum</italic>

Centro de Biotecnología Aplicada, Departamento de Biología, Facultad de Ciencias y Tecnología (FACYT)

The EuroBiotech Journal

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Solid-state fermentation of paper sludge to obtain spores of the fungus 

Paper production generates large quantities of a solid waste known as papermaking sludge (PS), which needs to be handled properly for final disposal. The high...

Solid-state fermentation of paper sludge to obtain spores of the fungus Trichoderma asperellum

Article Category: Research Article

Published Online: Apr 24, 2019

Page range: 71 - 77

DOI: https://doi.org/10.2478/ebtj-2019-0008

Keywords
Papermaking sludge, cellulose, water activity,

© 2019 Rosa Dorta-Vásquez, Oscar Valbuena, Domenico Pavone-Maniscalco, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Solid-state fermentation of paper sludge to obtain spores of the fungus Trichoderma asperellum

Article Category: Research Article

Published Online: Apr 24, 2019

Page range: 71 - 77

DOI: https://doi.org/10.2478/ebtj-2019-0008

KeywordsPapermaking sludge, cellulose, water activity,

© 2019 Rosa Dorta-Vásquez, Oscar Valbuena, Domenico Pavone-Maniscalco, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Papermaking sludge, cellulose, water activity,