title: Thin-layer chromatographic technique for rapid detection of bacterial phospholipases.
abstract: Silica gel thin-layer chromatography was employed to detect lecithinase activity induced from bacterial resting cell preparations induced from bacterial resting cell preparations incubated at 37 C for 4 h in the presence of purified egg yolk lecithin. Bacillus subtilis, Bacillus cereus, Serratia marcescens, and Pseudomonas aeruginosa hydrolyzed lecithin with the formation of free fatty acids as the sole lipid-soluble product. In none of the Escherichia coli and Citrobacter freundii strains tested could lecithinase activity be detected. Four among eight strains of Enterobacter aerogenes and one among 12 strains of Proteus tested produced negligible amounts of free fatty acid.
mesh_terms: D001409:Bacillus cereus / Q000201:enzymology; D001412:Bacillus subtilis / Q000201:enzymology; D001419:Bacteria / Q000201:enzymology*; D002855:Chromatography, Thin Layer / Q000379:methods*; D002954:Citrobacter / Q000201:enzymology; D004530:Egg Yolk; D004754:Enterobacter / Q000201:enzymology; D004926:Escherichia coli / Q000201:enzymology; D005230:Fatty Acids, Nonesterified / Q000096:biosynthesis; D005260:Female; D006868:Hydrolysis; D010713:Phosphatidylcholines / Q000378:metabolism; D010740:Phospholipases / Q000032:analysis* / Q000378:metabolism; D011511:Proteus / Q000201:enzymology; D011550:Pseudomonas aeruginosa / Q000201:enzymology; D012706:Serratia marcescens / Q000201:enzymology; D013045:Species Specificity
chemical_list: D005230:Fatty Acids, Nonesterified; D010713:Phosphatidylcholines; D010740:Phospholipases