TY - JOUR
T1 - Screening of potential antibiotic action of cellulolytic fungi
AU - Garcia-Kirchner, Oscar
AU - Segura-Granados, Marcela
AU - Robledo-Bautista, Ignacio
AU - Duran-Paramo, Enrique
PY - 2000
Y1 - 2000
N2 - Twenty different strains of filamentous fungi were initially selected for evaluation of cellulolytic activity using a single test in a simple mineral salts culture medium with filter paper as the only carbon source. Those fungi strains that were capable of completely breaking the filter paper strip within 4-8 d were assayed also for antimicrobial action, using Staphyloccocus aureus ATCC 6538P according to the so-called agar piece method. We screened three different strains with both capacities: the production of cellulolytic activity and antibiotic action. The experimental results suggest that the fungi Penicillium sp. F0PC01, Aspergillus sp. F0Q001, and Cephalosporium sp. F03800 have both capabilities because they grew rapidly on cellulose as the only carbon source and were able to produce an area of growth inhibition in S. aureus of approx 2.04, 1.57, and 2.39 cm, respectively, on agar plates using the agar piece method. Subsequently, the antibiotic production obtained with those cellulolytic strains was evaluated by submerged fermentation at the flask level, in a simple culture medium containing lactose without biosynthesis precursor, obtaining 3670, 2830, and 4060 antibiotic units/mL, referred to as penicillin G, whereas for cellulolytic activity, the results were 1.34, 1.81 and 0.57 FPU/mL, respectively.
AB - Twenty different strains of filamentous fungi were initially selected for evaluation of cellulolytic activity using a single test in a simple mineral salts culture medium with filter paper as the only carbon source. Those fungi strains that were capable of completely breaking the filter paper strip within 4-8 d were assayed also for antimicrobial action, using Staphyloccocus aureus ATCC 6538P according to the so-called agar piece method. We screened three different strains with both capacities: the production of cellulolytic activity and antibiotic action. The experimental results suggest that the fungi Penicillium sp. F0PC01, Aspergillus sp. F0Q001, and Cephalosporium sp. F03800 have both capabilities because they grew rapidly on cellulose as the only carbon source and were able to produce an area of growth inhibition in S. aureus of approx 2.04, 1.57, and 2.39 cm, respectively, on agar plates using the agar piece method. Subsequently, the antibiotic production obtained with those cellulolytic strains was evaluated by submerged fermentation at the flask level, in a simple culture medium containing lactose without biosynthesis precursor, obtaining 3670, 2830, and 4060 antibiotic units/mL, referred to as penicillin G, whereas for cellulolytic activity, the results were 1.34, 1.81 and 0.57 FPU/mL, respectively.
KW - Antimicrobial action
KW - Bioassays
KW - Cellulolytic activity
KW - Filamentous fungi
UR - http://www.scopus.com/inward/record.url?scp=0034128637&partnerID=8YFLogxK
U2 - 10.1385/ABAB:84-86:1-9:769
DO - 10.1385/ABAB:84-86:1-9:769
M3 - Artículo
C2 - 10849835
AN - SCOPUS:0034128637
SN - 0273-2289
VL - 84-86
SP - 769
EP - 778
JO - Applied Biochemistry and Biotechnology
JF - Applied Biochemistry and Biotechnology
ER -