Production of Aspergillus terreus alpha-L-rhamnosidase by solid state fermentation.
OBJECTIVE
The study of production of Aspergillus terreus CECT 2663 alpha-L-rhamnosidase in solid state fermentation using wheat bran, washed sugar cane bagasse and polyurethane foam as substrates or supports for the enzyme production.


RESULTS
Cultures were carried out in Petri dishes under controlled temperature and humidity. Naringin or rhamnose were the enzyme inducers and carbon sources. The enzyme activity to inducer ratio was appreciably greater when using sugar cane bagasse or polyurethane foam than wheat bran. The influence of inoculum size, inducer, airflow, humidity and temperature were determined. Under optimum conditions, about four units of enzyme per ml nutrient solution were obtained after 4-6 d.


CONCLUSIONS
The activity to inducer ratio was higher, and the cultivation time was shorter in solid state fermentation than those observed in submerged cultures.


CONCLUSIONS
Solid cultures, using naringin as inducer, can be appropriate alpha-L-rhamnosidase production.
Elinbaum
S
S
Instituto de Investigaciones para la Industria Química - Universidad Nacional de Salta, Buenos Aires 177, 4400 Salta, Argentina.
Ferreyra
H
H
Ellenrieder
G
G
Cuevas
C
C
D001230:Aspergillus / Q000201:enzymology*; D005285:Fermentation; D044950:Flavanones; D005419:Flavonoids / Q000378:metabolism; D006026:Glycoside Hydrolases / Q000096:biosynthesis*; D012210:Rhamnose / Q000378:metabolism
D044950:Flavanones; D005419:Flavonoids; D006026:Glycoside Hydrolases; C022525:alpha-L-rhamnosidase; C005274:naringin; D012210:Rhamnose