Production of native flagellin from Salmonella Typhimurium in a bioreactor and purification by tangential ultrafiltration

• Autor(a) principal: Oliveira,B. H.
• Data de Publicação: 2011
• Outros Autores: Silva,M. R., Braga,C. J. M., Massis,L. M., Ferreira,L. C. S., Sbrogio-Almeida,M. E., Takagi,M.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Journal of Chemical Engineering
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322011000400003
• topic: Flagellin; Purification; Tangential ultrafiltration; Salmonella Typhimurium

Flagellin is the structural protein and most abundant component of bacterial flagella. The flagellum filament contains around 20,000 - 100,000 subunits of 50 kDa flagellin that can have diverse biotechnological applications such as vaccine adjuvant and cellular protector during chemo- and radiotherapy. The main aim of this work was to study a production process of purified native FliC flagellin of Salmonella Typhimurium. The culture conditions in shakers were established with medium devoid of animal-derived components. In bioreactors, culture conditions were established in order to obtain flagellin from the culture supernatant by tangential ultrafiltration (TUF). The concentrated 750 kDa cut-off TUF fraction had a purification factor of 1.5 and a recovery yield of 52.2% for flagellin. The volumetric production of flagellin using the described procedure achieved around 307 mg/L of culture, which represented a significant improvement over previously reported methods. These results permit the development of production and purification processes that can be easily scaled up.