{"product_id":"isolation-and-characterization-of-biosurfactant-producing-bacteria-von-israa-s-al-rowaihi","title":"Isolation and Characterization of Biosurfactant-Producing Bacteria","description":"\u003cp\u003ePetroleum-polluted environmental samples were collected to isolate and characterize biosurfactant-producing bacteria. Culturing of the collected samples in LB-broth and enrichment in chemically defined medium (CDM) with various carbon sources yielded 51 strains, some of which produced biosurfactants\/bioemulsifiers when challenged with crude oil as a sole carbon source. The I-15 isolate, a Gram-positive, motile bacillus, emulsified crude oil in CDM without reduction in surface tension. Infrared spectroscopy and thin layer chromatography suggested a lipopeptide structure for the crude biosurfactant.Partial sequences of 10 16S rDNA gene clones from the I-15 strain were highly similar to those of various members of the family Bacillaceae. The I-15 strain is a promising biosurfactant producer and is probably an active indigenous crude oil degrader. Biosurfactant production is accompanied by morphological and physiological alterations. The I-15 strain possesses intragenomic heterogeneity in the rrn (RNA) operons.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783659291128\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783659291128","offer_id":39433823354973,"sku":"9783659291128","price":36.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/35f3c398-f774-49f0-a92e-313221024f90.jpg?v=1773471547","url":"https:\/\/shop.autorenwelt.de\/products\/isolation-and-characterization-of-biosurfactant-producing-bacteria-von-israa-s-al-rowaihi","provider":"Autorenwelt Shop","version":"1.0","type":"link"}