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EXPLORING COLORANT PRODUCTION BY AMAZONIAN FILAMENTOUS FUNGI: STABILITY AND APPLICATIONS
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  • João Vicente Braga de Souza,
  • Luciana Oliveira,
  • Michele Sanches,
  • Walter Filho,
  • Paulo Santiago,
  • Rodrigo Lima,
  • Ana Cortez,
  • Érica Souza,
  • Maria Lima,
  • Emerson Silva,
  • Hector Koolen,
  • Laurent Dufossé
João Vicente Braga de Souza
National Institute of Amazonian Research

Corresponding Author:joao.souza@inpa.gov.br

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Luciana Oliveira
Universidade do Estado do Amazonas
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Michele Sanches
Universidade do Estado do Amazonas
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Walter Filho
Universidade do Estado do Amazonas
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Paulo Santiago
Universidade Federal do Amazonas
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Rodrigo Lima
Centro Universitario do Norte
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Ana Cortez
National Institute of Amazonian Research
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Érica Souza
Universidade do Estado do Amazonas
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Maria Lima
National Institute of Amazonian Research
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Emerson Silva
Universidade Federal do Amazonas
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Hector Koolen
Universidade do Estado do Amazonas
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Laurent Dufossé
Universite de La Reunion
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Abstract

The aim of this study was to investigate the production, stability and applicability of colorants produced by filamentous fungi isolated from soil samples from the Amazon. Initially, the isolates were evaluated in a screening for the production of colorants. The influences of cultivation and nutritional conditions on the production of colorants by fungal isolates were investigated. The colorants produced by selected fungal isolates were chemically characterized using the LC-MS technique. The antimicrobial and cytotoxic activities, stability evaluation and applicability of the colorants were investigated. As results, we observed that the isolates Penicillium sclerotiorum P3SO224, Clonostachys rosea P2SO329 and Penicillium gravinicasei P3SO332 stood out since they produced the most intense colorants. Compounds produced by Penicillium sclerotiorum P3SO224 and Clonostachys rosea P2SO329 were identified as sclerotiorin and penicillic acid. The colorant fraction (EtOAc) produced by these species has antimicrobial activity, stability at temperature and at different pHs, stability when exposure to light and UV, and when exposed to different concentrations of salts, as well as being non-toxic and having the ability to dye fabrics and be used as a pigment in creams and soap. Considering the results found in this study, it was concluded that fungi from the soil in the Amazon have the potential to produce colorants with applications in the textile and pharmaceutical industries.
01 Aug 2023Submitted to Journal of Basic Microbiology
09 Aug 2023Submission Checks Completed
09 Aug 2023Assigned to Editor
09 Aug 2023Review(s) Completed, Editorial Evaluation Pending
15 Aug 2023Reviewer(s) Assigned
06 Sep 2023Editorial Decision: Revise Major
25 Sep 20231st Revision Received
03 Oct 2023Submission Checks Completed
03 Oct 2023Assigned to Editor
03 Oct 2023Review(s) Completed, Editorial Evaluation Pending
03 Oct 2023Reviewer(s) Assigned
07 Oct 2023Editorial Decision: Accept