Short communication, Note
Differentiation Between Amino Acids Used as Carbon and Energy Sources During Growth of Geotrichum candidum Geo17
Lydia Adour
; Laboratoire de Chimie Appliquée et de Génie Chimique, Université Mouloud Mammeri, Hasnaoua 1, Tizi-Ouzou, Algérie
Catherine Couriol
; LARCIP/LPS, Université de Rennes 1, Campus de Beaulieu, Bât. 10 A, CS 74205, Avenue du Général Leclerc, FR-35042 Rennes Cedex, France
Abdeltif Amrane
orcid.org/0000-0003-2622-2384
; LARCIP/LPS, Université de Rennes 1, Campus de Beaulieu, Bât. 10 A, CS 74205, Avenue du Général Leclerc, FR-35042 Rennes Cedex, France
Abstract
Geotrichum candidum Geo17 was cultivated on peptones as carbon and nitrogen source, and in the presence of lactate as the second carbon source. From the analysis of the initial and final culture medium after total hydrolysis, the yield of consumption was determined for each amino acid. Amino acids have been considered a convenient carbon source for biosynthesis, while the rest of the amino acids were assumed to be used only as a nitrogen source, with the corresponding carbon released as CO2 resulting from energy supply. Carbon mass balances confirmed this assumption. A clear differentiation between the amino acids assimilated as carbon sources and those assimilated as energy sources was therefore highlighted.
Keywords
amino acids; carbon and nitrogen sources; Geotrichum candidum; growth
Hrčak ID:
110448
URI
Publication date:
15.3.2005.
Visits: 1.927 *