agar and tributyrin

agar has been researched along with tributyrin* in 2 studies

Other Studies

2 other study(ies) available for agar and tributyrin

Article	Year
A study of the growth of Pseudallescheria boydii isolates from sewage sludge and clinical sources on tributyrin, rapeseed oil, biodiesel oil and diesel oil. Annals of agricultural and environmental medicine : AAEM, 2008, Volume: 15, Issue:1 The study compared the growth of Pseudallescheria boydii isolates from sewage sludge and from clinical sources on tributyrin, rapeseed oil, biodiesel oil and diesel oil agars. The isolates grew on all substrates tested. The highest growth was observed on rapeseed oil agar, while the lowest on diesel agar. On tributyrin agar, hydrolysis zones were observed around or underneath the colonies. On rapeseed oil agar, no hydrolysis zones were formed, while most isolates formed such a zone on biodiesel oil agar. Rapeseed oil and biodiesel oil stimulated the growth of P. boydii isolates, while tributyrin inhibited fungal growth. The stimulation or inhibition effect of diesel oil was dependent on the specified strain. In clinical isolates, fungal growth and activity were found to be more variable compared to sludge isolates. The data suggest that contamination of the environment with these oils could favor the growth of P. boydii. However, no association was found between the growth and oil utilization by this fungus and its pathogenicity. Topics: Agar; Colony Count, Microbial; Environmental Microbiology; Fatty Acids, Monounsaturated; Gasoline; Humans; Hydrolysis; Plant Oils; Pseudallescheria; Rapeseed Oil; Risk Assessment; Sewage; Triglycerides	2008
Isolation of lipase producing Bacillus sp. from olive mill wastewater and improving its enzyme activity. Journal of hazardous materials, 2007, Nov-19, Volume: 149, Issue:3 The bacteria that could grow on media containing olive mill wastewater (OMW) were isolated and their lipase production capacities were investigated. The strain possessing the highest lipase activity among 17 strains grown on tributyrin agar medium was identified as Bacillus sp. The effect of initial pH on the lipase activity was investigated in tributyrin medium and pH 6 was found to be the optimal. The liquid medium composition was improved by replacing tributyrin with various carbon sources. Among the media containing different compositions of triolein, trimyristin, trilaurin, tricaprin, tricaprylin, tributyrin, triacetin, Tween 80, OMW, glucose, and whey; the medium contained 20% whey +1% triolein was found to give the highest lipase activity. Cultivation of Bacillus sp. in the optimal medium at pH 6 and 30 degrees C for 64h resulted in the extracellular and intracellular lipase activities of 15 and 168U/ml, respectively. Topics: Agar; Bacillus; Culture Media; Enzymes; Fatty Acids; Hydrogen-Ion Concentration; Industrial Microbiology; Industrial Waste; Lipase; Lipolysis; Olea; Temperature; Time Factors; Triglycerides; Waste Disposal, Fluid	2007

Article

Year

A study of the growth of Pseudallescheria boydii isolates from sewage sludge and clinical sources on tributyrin, rapeseed oil, biodiesel oil and diesel oil.

Annals of agricultural and environmental medicine : AAEM, 2008, Volume: 15, Issue:1

The study compared the growth of Pseudallescheria boydii isolates from sewage sludge and from clinical sources on tributyrin, rapeseed oil, biodiesel oil and diesel oil agars. The isolates grew on all substrates tested. The highest growth was observed on rapeseed oil agar, while the lowest on diesel agar. On tributyrin agar, hydrolysis zones were observed around or underneath the colonies. On rapeseed oil agar, no hydrolysis zones were formed, while most isolates formed such a zone on biodiesel oil agar. Rapeseed oil and biodiesel oil stimulated the growth of P. boydii isolates, while tributyrin inhibited fungal growth. The stimulation or inhibition effect of diesel oil was dependent on the specified strain. In clinical isolates, fungal growth and activity were found to be more variable compared to sludge isolates. The data suggest that contamination of the environment with these oils could favor the growth of P. boydii. However, no association was found between the growth and oil utilization by this fungus and its pathogenicity.

Topics: Agar; Colony Count, Microbial; Environmental Microbiology; Fatty Acids, Monounsaturated; Gasoline; Humans; Hydrolysis; Plant Oils; Pseudallescheria; Rapeseed Oil; Risk Assessment; Sewage; Triglycerides

2008

Isolation of lipase producing Bacillus sp. from olive mill wastewater and improving its enzyme activity.

Journal of hazardous materials, 2007, Nov-19, Volume: 149, Issue:3

The bacteria that could grow on media containing olive mill wastewater (OMW) were isolated and their lipase production capacities were investigated. The strain possessing the highest lipase activity among 17 strains grown on tributyrin agar medium was identified as Bacillus sp. The effect of initial pH on the lipase activity was investigated in tributyrin medium and pH 6 was found to be the optimal. The liquid medium composition was improved by replacing tributyrin with various carbon sources. Among the media containing different compositions of triolein, trimyristin, trilaurin, tricaprin, tricaprylin, tributyrin, triacetin, Tween 80, OMW, glucose, and whey; the medium contained 20% whey +1% triolein was found to give the highest lipase activity. Cultivation of Bacillus sp. in the optimal medium at pH 6 and 30 degrees C for 64h resulted in the extracellular and intracellular lipase activities of 15 and 168U/ml, respectively.

Topics: Agar; Bacillus; Culture Media; Enzymes; Fatty Acids; Hydrogen-Ion Concentration; Industrial Microbiology; Industrial Waste; Lipase; Lipolysis; Olea; Temperature; Time Factors; Triglycerides; Waste Disposal, Fluid

2007