scholarly journals EFFECT OF DIFFERENT CARBON AND NITROGEN SOURCES ON SPORULATION OF BEAUVERIA BASSIANA ROMANIAN STRAINS

2021 ◽  
Vol 14 ◽  
pp. 24-31
Author(s):  
Daniel Cojocaru ◽  
Cristina-Maria Lumînare
Keyword(s):  
Beauveria Bassiana ◽  
Culture Medium ◽  
Nitrogen Sources ◽  
Fungal Isolate ◽  
Artificial Substrates ◽  
Scale Production ◽  
Carbon And Nitrogen Sources ◽  
Carbon And Nitrogen ◽  
Liquid Fermentation ◽  
Industrial Scale Production

A requirement for industrial-scale production of mycoinsecticides is the capacity of fungal strains to produce infective and stable propagules on inexpensive artificial substrates, with either solid-state or submerged liquid fermentation methods. The ability of entomopathogenic fungi to use different nutritive substrates is one of the factors influencing their effectiveness.Vegetative growth and sporulation yield depend on the composition of the culture medium and are specific to each fungal isolate. Our study has focused on fungal inoculum produced in artificial media. Native Beauveria bassiana strains was cultivated in liquid medium involving variations in carbon and nitrogen sources and the production of spores was evaluated. The results revealed that among the carbon and nitrogen sources tested, zaharose and ammonium nitrate were most efficiently used for the production of B.bassiana spores in submerged liquid fermentation.

scholarly journals Optimum conditions for Prodigiosin production by Serratia marcescens S11

2011 ◽  
Vol 5 (3) ◽  
pp. 34-40
Author(s):  
Abdulkareem Jasim ◽  
Hameed M. Jasim ◽  
Isra'a M. Dhahi
Keyword(s):  
Serratia Marcescens ◽  
Culture Medium ◽  
Casein Hydrolysate ◽  
Brain Heart Infusion ◽  
Nitrogen Sources ◽  
Optimum Conditions ◽  
Carbon And Nitrogen Sources ◽  
Carbon And Nitrogen ◽  
Phosphate Source ◽  
Initial Medium

Different nutritional and cultural factors were studied to determine the optimum conditions for prodigiosin production by Serratia marcescens S11 in a batch culture of brain-heart infusion broth medium. These factors include carbon source and its concentration, nitrogen source and its concentration, phosphate source, temperature and pH. Results showed that the optimum conditions for prodigiosin production were achieved when the production medium was supplemented with olive oil and casein hydrolysate as a carbon and nitrogen sources respectively in a concentration of 1.5% for broth, KH2PO4 as a phosphate source at initial medium pH8, and incubation at 28°C for 24 hours. Under these optimal conditions, prodigiosin activity produced by Serratia marcescens S11 in culture medium was increased from 200 U/cell before optimization to 3000 U/cell.

scholarly journals Influence of cultivation conditions on IAA - producing activity of endophytic bacterial strains isolated from morning-glory (IPOMOEA PES-CAPRAE (L.) R.Br.)

2021 ◽  
Vol 36 ◽  
pp. 05003
Author(s):  
Nguyen Van Zhang ◽  
Nguyen Thi Thu ◽  
Vu Thi Linh ◽  
V.V. Pylnev ◽  
M.I. Popchenko
Keyword(s):  
Carbon Source ◽  
Culture Medium ◽  
Nitrogen Sources ◽  
Morning Glory ◽  
Bacterial Strains ◽  
Cultivation Conditions ◽  
Bacillus Mycoides ◽  
Carbon And Nitrogen Sources ◽  
Carbon And Nitrogen ◽  
Study Results

This work presents the experimental study results of the influence of the culture medium on the ability to IAA synthesis of three endophytic strains TH10R, TH11T, and TH13T from roots of Ipomoea pes-caprae. Three investigated strains give the highest IAA concentration after 96 h of cultivation. A significant increase in IAA biosynthesis was obtained by cultivating the TH10R strain in a medium containing lactose or starch as a carbon source and NH4Cl or KNO3 as a nitrogen source. The TH11T strain produces the maximum amount of IAA, using glucose or xylose and KNO3 or NH4NO3 as carbon and nitrogen sources, respectively. Sucrose is a suitable carbon source for the TH13T strain; on a sucrose-containing medium, the TH13T strain produces the highest IAA amount. The most active strain is TH10R, identified as Bacillus mycoides and named Bacillus mycoides TH10R.

scholarly journals High level production of laccases and peroxidases from the newly isolated white-rot basidiomycete Marasmiellus palmivorus VE111 in a stirred-tank bioreactor in response to different carbon and nitrogen sources

2018 ◽  
Vol 69 ◽  
pp. 1-11 ◽  
Author(s):  
Willian Daniel Hahn Schneider ◽  
Roselei Claudete Fontana ◽  
Simone Mendonça ◽  
Félix Gonçalves de Siqueira ◽  
Aldo José Pinheiro Dillon ◽  
...  
Keyword(s):  
Nitrogen Sources ◽  
White Rot ◽  
Stirred Tank ◽  
Carbon And Nitrogen Sources ◽  
Stirred Tank Bioreactor ◽  
Carbon And Nitrogen ◽  
High Level ◽  
Level Production

Growth Conditions of a Thermophilic Geobacillus sp. as an Enhanced Oil Recovery Material

2012 ◽  
Vol 496 ◽  
pp. 457-460
Author(s):  
Xiang Ping Kong
Keyword(s):  
Enhanced Oil Recovery ◽  
Bacterial Growth ◽  
Oil Recovery ◽  
Nitrogen Sources ◽  
Growth Conditions ◽  
Good Growth ◽  
Strictly Aerobic ◽  
Aerobic Bacterium ◽  
Carbon And Nitrogen Sources ◽  
Carbon And Nitrogen

The growth conditions of a Geobacillus sp. were investigated by single-factor experiments. The strain was strictly aerobic bacterium, and could grow on hydrocarbons as the sole carbon source. The optimum carbon and nitrogen sources were 3.0% sucrose and 0.20% KNO3, respectively. The range of temperature, salinity and pH for the bacterial growth was 35-70 °C, 0-10% NaCl and 5.5-9.5, and good growth was obtained at 35-65 °C, 0.5-8% NaCl and 6.0-9.0, respectively. Particularly, the optimum temperature for the bacterial growth was between 50 °C and 60 °C. The strain had wide adaptability to the extreme conditions, and may be potentially applied to microbial enhanced oil recovery and oil-waste bioremediation technology.

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