Biochemical analysis of the Hormoconis resinae fungal mycelium in the corrosion of aeronautical aluminium alloys

Authors

  • R. Araya Laboratorio de Corrosión, Instituto de Química, Pontificia Universidad Católica de Valparaíso
  • C. Bobadilla Laboratorio de Corrosión, Instituto de Química, Pontificia Universidad Católica de Valparaíso
  • R. Vera Laboratorio de Corrosión, Instituto de Química, Pontificia Universidad Católica de Valparaíso
  • B. M. Rosales CIDEPINT

DOI:

https://doi.org/10.3989/revmetalm.2007.v43.i3.68

Keywords:

Hormoconis resinae, MIC, Aeronautic, Aluminium alloys, Biochemical analyses

Abstract


Biochemical analyses of the Hormoconis resinae fungal mycelium would explain behaviour differences of corrosive and non-corrosive strains on Al and its aeronautical alloys. In previous works its aggressiveness had been studied through SEM-EDX surface analysis, electrochemical techniques and immersion testing. In this paper separation of the proteins of the mycelium produced by a non-corrosive strain and its culture along three generations was performed. Cultures were prepared in batch in the presence and absence of pure Al and AA 2024, AA 7005 and AA 7075 alloys. The mycelia grown throughout the three generations increasingly
recovered usual characteristics at the third replication, included their corrosiveness on Al and its alloys previously shown by all our strains. Amongst the bio-molecule fractions isolated and analysed during this preliminary study only the proteins revealed changes with the generation grown. When this fungal strain was cultured in the presence of alloy metal sheets electrophoresis of the protean fraction was correlative with the distinct mycelia behaviour observed, including corrosiveness on Al and its alloys.

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Published

2007-06-30

How to Cite

Araya, R., Bobadilla, C., Vera, R., & Rosales, B. M. (2007). Biochemical analysis of the Hormoconis resinae fungal mycelium in the corrosion of aeronautical aluminium alloys. Revista De Metalurgia, 43(3), 228–236. https://doi.org/10.3989/revmetalm.2007.v43.i3.68

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