In vitro antifungal activity of aqueous extracts of olive bagasse (Olea europaea L.) against fungal that cause candidiasis, dermatophytosis and sporotrichosis in humans and animals

• Autor(a) principal: Ripoll, Márcia Kutscher
• Data de Publicação: 2022
• Outros Autores: Martins, Otávia de Almeida, Waller, Stefanie Bressan, Silva, Anna Luiza, Faria, Renata Osório de, Gomes, Angelita dos Reis, Picoli, Tony, Meireles, Mário Carlos Araújo, Acunha, Tanize dos Santos, Chaves, Fabio Clasen, Mello, João Roberto Braga de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Research, Society and Development
• Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/29090
• topic: Aqueous extract; Oleuropein; Hydroxytyrosol; Cytotoxicity.; Extracto acuoso; Oleuropeína; Hidroxitirosol; Citotoxicidad.; Extrato; Sucetibilidade in vitro; Oleuropeina; Hidroxitirosol; Citotoxicidade.

Fungal infections have become frequently in recent years. Dermatophytosis, sporotrichosis and candidiasis stand out. Due to the resistance to available drugs and with a view to diversifying the pharmaceutical field, the study was carried out using the bagasse of O. europaea. Studies related to olive trees do not address bagasse, which represents a potential economic alternative to its discarded tons by the industry. The objective of this work was to evaluate the in vitro sensitivity profile of fungal isolates against aqueous extracts of O. europeae bagasse. To test the cellular toxicity of the extracts and to determine the presence and amount of the main phenolic compounds. No antifungal activity of these aqueous extracts was observed against the isolates of dermatophytes and Sporothrix brasiliensis. The Candida spp. tested for in vitro susceptibility, two were sensitive to bagasse decoction extract from a concentration of 50mg/ml of DEC 10'. In the toxicity of the olive pomace decoction, concentrations from 12.5 mg/ml allowed at least 50% of the MDBK cells to remain viable. Concentrations from 3.13 to 0.78 mg/ml were safe, as 100% cell viability occurred. Of the hydroxytyrosol (HPLC) compounds, the concentration varied from 8 x10-4 to 34 x10-4 mg/ml in INF 10' and from 11 x10-4 to 81 x10-4 mg/ml in DEC 10'. For oleuropein, the DEC 10' extracts varied their concentration from 87 x10-3 to 7 x10-3 mg/ml, while for INF 10' the values ​​were from 23 x10-3 mg/ml to not detected in some varieties.