Hydrocarbon degradation and bioemulsifier production by thermophilic Geobacillus pallidus strains

CORC > 天津工业生物技术研究所 > 微生物群落及应用生态功能实验室--黄志勇 > 期刊论文

	Hydrocarbon degradation and bioemulsifier production by thermophilic Geobacillus pallidus strains
	Chenggang Zheng ; Jianglin He ; Yongli Wang ; Manman Wang ; Zhiyong Huang
刊名	Bioresource Technology
	2011-10
卷号	102 期号:19 页码:9155-9161
关键词	Geobacillus pallidus Hydrocarbon Biodegradation Bioemulsifier Emulsifying activity
英文摘要	Geobacillus pallidus XS2 and XS3 were isolated from oil contaminated soil samples in Yumen oilfield, China, and were able to produce bioemulsifiers on different hydrocarbons. Biodegradation assays exhibited that approximately 70% of PAH (250 mg/L) or 85% of crude oil (500 mg/L) was removed by the thermophilic bacteria after 20 days. The bioemulsifiers of the two strains were isolated and obtained a productive yield of 4.24 ± 0.08 and 3.82 ± 0.11 g/L, respectively. GPC analysis revealed that the number-average molecular weights (Mn) of the two bioemulsifiers were 271,785 Da and 526,369 Da, with PDI values of 1.104 and 1.027, respectively. Chemical composition studies exhibited that the bioemulsifier XS2 consisted of carbohydrates (68.6%), lipids (22.7%) and proteins (8.7%) while the bioemulsifier XS3 was composed by carbohydrates (41.1%), lipids (47.6%) and proteins (11.3%). Emulsification assays approved the effectiveness of bioemulsifiers over a wide range of temperature, pH and salinity. Highlights ► Isolation and identification of thermophilic hydrocarbon-degrading bacteria. ► Investigation of hydrocarbon degradation pattern. ► Bioemulsifier: chemical characterization and emulsifying properties
公开日期	2011-08-17
内容类型	期刊论文
源URL	[http://localhost/handle/0/110]
专题	天津工业生物技术研究所_微生物群落及应用生态功能实验室--黄志勇_期刊论文
推荐引用方式 GB/T 7714	Chenggang Zheng,Jianglin He,Yongli Wang,et al. Hydrocarbon degradation and bioemulsifier production by thermophilic Geobacillus pallidus strains[J]. Bioresource Technology,2011,102(19):9155-9161.
APA	Chenggang Zheng,Jianglin He,Yongli Wang,Manman Wang,&Zhiyong Huang.(2011).Hydrocarbon degradation and bioemulsifier production by thermophilic Geobacillus pallidus strains.Bioresource Technology,102(19),9155-9161.
MLA	Chenggang Zheng,et al."Hydrocarbon degradation and bioemulsifier production by thermophilic Geobacillus pallidus strains".Bioresource Technology 102.19(2011):9155-9161.