Growth and laccase production kinetics of Trametes versicolor in a stirred tank reactor.
White rot fungi are a promising option to treat recalcitrant organic molecules, such as lignin, polycyclic aromatic hydrocarbons, and textile dyes, because of the lignin-modifying enzymes (LMEs) they secrete. Because knowledge of the kinetic parameters is important to better design and operate bioreactors to cultivate these fungi for degradation and/or to produce LME(s), these parameters were determined using Trametes versicolor ATCC 20869 (ATCC, American Type Culture Collection) in a magnetic stir bar reactor. A complete set of kinetic data has not been previously published for this culture. Higher than previously reported growth rates with high laccase production of up to 1,385 U l(-1) occurred during growth without [Formula: see text] or glucose limitation. The maximum specific growth rate averaged 0.94 +/- 0.23 day(-1), whereas the maximum specific substrate consumption rates for glucose and ammonium were 3.37 +/- 1.16 and 0.15 +/- 0.04 day(-1), respectively. The maximum specific oxygen consumption rate was 1.63 +/- 0.36 day(-1).
Thiruchelvam
A T
AT
Department of Chemical Engineering, Queen's University, Kingston, ON, K7L 3N6, Canada.
Ramsay
Juliana A
JA
D019149:Bioreactors; D002245:Carbon Dioxide / Q000378:metabolism; D003470:Culture Media / Q000737:chemistry; D005947:Glucose / Q000378:metabolism; D007700:Kinetics; D042845:Laccase / Q000096:biosynthesis*; D010101:Oxygen Consumption; D020072:Polyporales / Q000201:enzymology* / Q000254:growth & development*; D000644:Quaternary Ammonium Compounds / Q000378:metabolism
D003470:Culture Media; D000644:Quaternary Ammonium Compounds; D002245:Carbon Dioxide; D042845:Laccase; D005947:Glucose