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Raw citrus by-product valorization: unlocking the potential of biotransformation by Talaromyces amestolkiae to obtain cellulolytic enzymes and natural colorants

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Autor(es):
Lima, Caio de Azevedo ; Bento, Heitor B. S. ; Picheli, Flavio Pereira ; de Oliveira, Fernanda ; Neto, Almiro Pires da Silva ; Pedrolli, Danielle Biscaro ; Masarin, Fernando ; da Silva, Silvio Silverio ; Santos-ebinuma, Valeria Carvalho
Número total de Autores: 9
Tipo de documento: Artigo Científico
Fonte: BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR; v. N/A, p. 11-pg., 2025-12-29.
Resumo

Agro-industrial by-products can be used as valuable nutrient sources for the sustainable production of high-value-added compounds. The goal of this study was utilize raw citrus industrial by-product (RCB) as a carbon source for the simultaneous production of red colorants and enzymes by the filamentous fungus Talaromyces amestolkiae under lab-scale submerged cultivation. The results demonstrated that RCB can be metabolized by T. amestolkiae, enabling the production of red colorant (2.15 absorbance units at 500 nm after 336 h) when supplemented with commercial glucose and monosodium glutamate. Additionally, several enzymes were produced, with cellobiase, a type of beta-glucosidase, being particularly noteworthy. Genome analysis of T. amestolkiae revealed the presence of several enzymes, including glucosidases, xylanases, xylosidases, pectinase and glucanases in the following sequence of code: 39, 16, 14, 4 and 17. These findings highlight the metabolic versatility of T. amestolkiae in the biotransformation of agro-industrial residues. This supports an integrated biotechnology approach linking gene expression, enzyme activity, and colorant biosynthesis for optimized metabolite production. By applying the biorefinery concept, this approach contributes to the sustainable production of commercially valuable biomolecules, reinforcing the role of agro-industrial residue valorization in a circular bioeconomy. (AU)

Processo FAPESP: 19/15493-9 - Desenvolvimento de hidrogéis eletrocondutivos baseados em líquidos iônicos
Beneficiário:Valéria de Carvalho Santos Ebinuma
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 23/01368-3 - Estabilização e encapsulamento de colorantes naturais e aplicação no desenvolvimento de embalagens e cosméticos
Beneficiário:Valéria de Carvalho Santos Ebinuma
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 21/06686-8 - Processo biotecnológico visando o desenvolvimento de colorantes naturais microbianos para aplicação industrial: fase II
Beneficiário:Valéria de Carvalho Santos Ebinuma
Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Jovens Pesquisadores - Fase 2
Processo FAPESP: 21/09175-4 - Biorrefinaria como uma plataforma para a produção de colorantes fúngicos
Beneficiário:Fernanda de Oliveira
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado