Mushrooms bio-residues valorisation: Optimisation of ergosterol extraction using response surface methodology

• Autor(a) principal: Silva, Ana Rita
• Data de Publicação: 2018
• Outros Autores: Oludemi, Taofiq, Costa, Cristina, Barros, Joana, Ferreira, Inês, Nunes, João, Prieto Lage, Miguel A., Simal-Gandara, Jesus, Barros, Lillian, Ferreira, Isabel C.F.R.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10198/21867
• topic: Bio-residues; Ergosterol; Heat-assisted extraction; Mushrooms; Response surface methodology

The bio-residues of Pleurotus ostreatus, Agrocybe cylindracea, and Pleurotus eryingii were stud-ied as sustainable sources of ergosterol. Its extraction was performed by a heat-assistedextraction technique and optimised using response surface methodology. The responseswere: extraction yield of the residual material (R) from the mushroom bio-residues driedweight (%), the quantification of ergosterol in the M dw (mg E/100 g M dw), and in the R (mgE/g R). The most feasible responses for industrial transference were obtained for P. ostreatusbio-residues, at the optimal conditions of 65.6 min at 30◦C and 43.7 min at 90◦C producing43.72 mg E/g R and 290.90 mg E/100 g M dw, respectively. The model satisfactorily fitted theexperimental data for all responses, thus implying a good agreement between the experi-mental values and those predicted by the model. The study proposes a simple and efficientmethod to produce an ergosterol rich extract from mushroom bio-residues.