%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Gutierrez-Sanchez, G.
%A Roussos, Sevastianos
%A Augur, Christopher
%T Effect of caffeine concentration on biomass production, caffeine degradation, and morphology of Aspergillus tamarii
%D 2013
%L fdi:010060866
%G ENG
%J Folia Microbiologica
%@ 0015-5632
%M ISI:000317976600003
%N 3
%P 195-200
%R 10.1007/s12223-012-0197-3
%U https://www.documentation.ird.fr/hor/fdi:010060866
%> https://www.documentation.ird.fr/intranet/publi/2013/05/010060866.pdf
%V 58
%W Horizon (IRD)
%X The aim of the present study was to evaluate the effect of the initial caffeine concentration (1-8 g/L) on growth and caffeine consumption by Aspergillus tamarii as well as pellet morphology, in submerged fermentation. Caffeine was used as sole nitrogen source. At 1 g/L of initial caffeine concentration, caffeine degradation was not affected, resulting in a production of 8.7 g/L of biomass. The highest biomass production (12.4-14.8 g/L) was observed within a range of 2 to 4 g/L of initial caffeine concentration. At these initial caffeine concentrations, after 96 h of fermentation, 41-51 % of the initial caffeine was degraded. Using an initial caffeine concentration of 2-3 g/L, the highest specific growth rate was observed (mu = 0.069 1/h). Biomass production decreased at 8 g/L of initial caffeine concentration. A. tamarii formed mainly pellets at all concentrations tested. The size of the pellet decreased at a caffeine concentration of 8 g/L.
%$ 084