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Datta P, Tiwari P, Pandey LM. Isolation and characterization of biosurfactant producing and oil degrading Bacillus subtilis MG495086 from formation water of Assam oil reservoir and its suitability for enhanced oil recovery. BIORESOURCE TECHNOLOGY 2018; 270:439-448. [PMID: 30245313 DOI: 10.1016/j.biortech.2018.09.047] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/07/2018] [Accepted: 09/08/2018] [Indexed: 06/08/2023]
Abstract
The strains isolated from the formation water were characterized and screened considering their crude oil degradation capability and biosurfactant production ability. The growth kinetics study of isolated Bacillus subtilis MG495086 was carried out by varying growth parameters i.e. carbon source, temperature, pH and salinity. The biosurfactant production was optimized adopting RSM-CCD considering carbon source (1-5%), pH (3-11) and temperature (25-65 °C) as matrix parameters. The optimum biosurfactant production (6.3 ± 0.1 g/L) and the minimum surface tension 29.85 mN/m were obtained after 96 h of incubation under optimal conditions i.e. 3.8% (v/v) of light-paraffin oil as sole carbon source at 62.4 °C and pH 7.7 with the maximum oil degradation capability of 91.3 ± 5%. Critical micelle concentration value of crude biosurfactant was found to be 40 mg/L with high emulsification activity of 72.45 ± 0.85%. The produced biosurfactant was identified as lipopeptide (Surfactin) and characterized using various analytical techniques to establish its suitability for microbial enhanced oil recovery.
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Affiliation(s)
- Poulami Datta
- Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Pankaj Tiwari
- Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Lalit M Pandey
- Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India; Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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52
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Chaprão MJ, da Silva RDCFS, Rufino RD, Luna JM, Santos VA, Sarubbo LA. Production of a biosurfactant from Bacillus methylotrophicus UCP1616 for use in the bioremediation of oil-contaminated environments. ECOTOXICOLOGY (LONDON, ENGLAND) 2018; 27:1310-1322. [PMID: 30392032 DOI: 10.1007/s10646-018-1982-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/01/2018] [Indexed: 06/08/2023]
Abstract
The aim of the present study was to produce a microbial biosurfactant for use in the bioremediation of environments contaminated with petroleum products. Bacillus methylotrophicus was isolated from seawater taken from a port area and cultivated using industrial waste as substrate (corn steep liquor and sugarcane molasses [both at 3%]). Surface tension measurements and motor oil emulsification capacity were used for the evaluation of the production of the biosurfactant, which demonstrated stability in a broad range of pH and temperature as well as a high concentration of saline, with the reduction of the surface tension of water to 29 mN/m. The maximum concentration of biosurfactant (10.0 g/l) was reached after 144 h of cultivation. The biosurfactant was considered to be a lipopeptide based on the results of proton nuclear magnetic resonance and Fourier transformed infrared spectroscopy. The tests demonstrated that the biosurfactant is innocuous and has potential for the bioremediation of soil and water contaminated by petroleum products. Thus, the biosurfactant described herein has a low production cost and can be used in environmental processes.
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Affiliation(s)
- Marco José Chaprão
- Northeast Biotechnology Network (RENORBIO), Federal Rural University of Pernambuco, Rua Dom, Manoel de Medeiros, s/n, Dois Irmãos, Recife, Pernambuco, 52171-900, Brazil
- Advanced Institute of Technology and Innovation - IATI, Rua Joaquim de Brito, n 216, Boa Vista, Recife, Pernambuco, 50070-280, Brazil
| | - Rita de Cássia F Soares da Silva
- Advanced Institute of Technology and Innovation - IATI, Rua Joaquim de Brito, n 216, Boa Vista, Recife, Pernambuco, 50070-280, Brazil
- Catholic University of Pernambuco, Rua do Príncipe, n. 526, Boa Vista, Recife, Pernambuco, 50050-900, Brazil
| | - Raquel D Rufino
- Advanced Institute of Technology and Innovation - IATI, Rua Joaquim de Brito, n 216, Boa Vista, Recife, Pernambuco, 50070-280, Brazil
- Catholic University of Pernambuco, Rua do Príncipe, n. 526, Boa Vista, Recife, Pernambuco, 50050-900, Brazil
| | - Juliana M Luna
- Advanced Institute of Technology and Innovation - IATI, Rua Joaquim de Brito, n 216, Boa Vista, Recife, Pernambuco, 50070-280, Brazil
- Catholic University of Pernambuco, Rua do Príncipe, n. 526, Boa Vista, Recife, Pernambuco, 50050-900, Brazil
| | - Valdemir A Santos
- Advanced Institute of Technology and Innovation - IATI, Rua Joaquim de Brito, n 216, Boa Vista, Recife, Pernambuco, 50070-280, Brazil
- Catholic University of Pernambuco, Rua do Príncipe, n. 526, Boa Vista, Recife, Pernambuco, 50050-900, Brazil
| | - Leonie A Sarubbo
- Advanced Institute of Technology and Innovation - IATI, Rua Joaquim de Brito, n 216, Boa Vista, Recife, Pernambuco, 50070-280, Brazil.
- Catholic University of Pernambuco, Rua do Príncipe, n. 526, Boa Vista, Recife, Pernambuco, 50050-900, Brazil.
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53
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Durval IJB, Resende AHM, Figueiredo MA, Luna JM, Rufino RD, Sarubbo LA. Studies on Biosurfactants Produced usingBacillus cereusIsolated from Seawater with Biotechnological Potential for Marine Oil-Spill Bioremediation. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12218] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Italo José B. Durval
- Federal University of Pernambuco; Av. Prof. Moraes Rego, 1235, Cidade Universitária, Zip Code, 50670-901, Recife Pernambuco Brazil
| | - Ana Helena M. Resende
- Catholic University of Pernambuco; Rua do Príncipe, n. 526, Boa Vista, Zip Code, 50050-900, Recife Pernambuco Brazil
- Advanced Institute of Technology and Innovation (IATI); Rua Joaquim de Brito, 216, Boa Vista, Zip Code, 50070-280, Recife Pernambuco Brazil
| | - Mariana A. Figueiredo
- Department of Microbiology; Aggeu Magalhães Research Center, Oswaldo Cruz Foundation; CPqAM/Fiocruz, Av. Professor Moraes Rego, s/n, Cidade Universitária, Zip Code, 50670-420, Recife Pernambuco Brazil
| | - Juliana M. Luna
- Catholic University of Pernambuco; Rua do Príncipe, n. 526, Boa Vista, Zip Code, 50050-900, Recife Pernambuco Brazil
- Advanced Institute of Technology and Innovation (IATI); Rua Joaquim de Brito, 216, Boa Vista, Zip Code, 50070-280, Recife Pernambuco Brazil
| | - Raquel D. Rufino
- Catholic University of Pernambuco; Rua do Príncipe, n. 526, Boa Vista, Zip Code, 50050-900, Recife Pernambuco Brazil
- Advanced Institute of Technology and Innovation (IATI); Rua Joaquim de Brito, 216, Boa Vista, Zip Code, 50070-280, Recife Pernambuco Brazil
| | - Leonie A. Sarubbo
- Catholic University of Pernambuco; Rua do Príncipe, n. 526, Boa Vista, Zip Code, 50050-900, Recife Pernambuco Brazil
- Advanced Institute of Technology and Innovation (IATI); Rua Joaquim de Brito, 216, Boa Vista, Zip Code, 50070-280, Recife Pernambuco Brazil
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54
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Yang R, Liu G, Chen T, Zhang W, Zhang G, Chang S. The complete genomic sequence of a novel cold-adapted bacterium, Planococcus maritimus Y42, isolated from crude oil-contaminated soil. Stand Genomic Sci 2018; 13:23. [PMID: 30338026 PMCID: PMC6180392 DOI: 10.1186/s40793-018-0328-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 09/28/2018] [Indexed: 12/02/2022] Open
Abstract
Planococcus maritimus Y42, isolated from the petroleum-contaminated soil of the Qaidam Basin, can use crude oil as its sole source of carbon and energy at 20 °C. The genome of P. maritimus strain Y42 has been sequenced to provide information on its properties. Genomic analysis shows that the genome of strain Y42 contains one circular DNA chromosome with a size of 3,718,896 bp and a GC content of 48.8%, and three plasmids (329,482; 89,073; and 12,282 bp). Although the strain Y42 did not show a remarkably higher ability in degrading crude oil than other oil-degrading bacteria, the existence of strain Y42 played a significant role to reducing the overall environmental impact as an indigenous oil-degrading bacterium. In addition, genome annotation revealed that strain Y42 has many genes responsible for hydrocarbon degradation. Structural features of the genomes might provide a competitive edge for P. maritimus strain Y42 to survive in oil-polluted environments and be worthy of further study in oil degradation for the recovery of crude oil-polluted environments.
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Affiliation(s)
- Ruiqi Yang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000 Gansu Province China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049 China
| | - Guangxiu Liu
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000 Gansu Province China
| | - Tuo Chen
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000 Gansu Province China
- State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
| | - Wei Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000 Gansu Province China
| | - Gaosen Zhang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000 Gansu Province China
| | - Sijing Chang
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000 Gansu Province China
- State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000 China
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing, 100049 China
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55
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Production, characterization and environmental applications of biosurfactants from Bacillus amyloliquefaciens and Bacillus subtilis. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.07.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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56
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Characterization and production optimization of biosurfactants by Bacillus mojavensis I4 with biotechnological potential for microbial enhanced oil recovery. Biodegradation 2018; 30:235-245. [DOI: 10.1007/s10532-018-9844-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 07/14/2018] [Indexed: 10/28/2022]
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57
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Meng Y, Gang HZ, Yang SZ, Ye RQ, Mu BZ. Insight into the Selectivity and Mechanism of Surfactin Containing Multiple Dissociated Carboxyls with 1-Bromoacetylpyrene in Fluorescent Derivatization. ANAL SCI 2018; 34:541-545. [PMID: 29743424 DOI: 10.2116/analsci.17p546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Fluorescent derivatization of the carboxyls in surfactin peptide rings is an effective way to improve the sensitivity of trace detection of surfactin, but very little is known about the reaction selectivity of surfactin containing multiple carboxyls in derivatization. In this paper, the reaction selectivity in fluorescent derivatization of a surfactin containing two carboxyls in its peptide ring with 1-bromoacetylpyrene and the catalysis role in the reactions were investigated using electrospray ionization mass spectrometry and tandem mass spectrometry. It showed that only one carboxyl was labeled with 1-bromoacetylpyrene in derivatization reactions, and the connection of the Asp residue with 1-bromoacetylpyrene was confirmed. It also showed that triethylamine as a catalyst was connected with surfactin to liberate more nucleophilic groups beneficial to promote the derivatization rate. This would contribute to better understanding the mechanism of derivatization of surfactin and its analogues with 1-bromoacetylpyrene, and with other fluorescent labeling reagents.
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Affiliation(s)
- Yong Meng
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology.,Sinopec Key Laboratory of Surfactants for EOR, Sinopec Shanghai Research Institute of Petrochemical Technology
| | - Hong-Ze Gang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology
| | - Shi-Zhong Yang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology
| | - Ru-Qiang Ye
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology
| | - Bo-Zhong Mu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology
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58
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Rahimi T, Niazi A, Deihimi T, Taghavi SM, Ayatollahi S, Ebrahimie E. Genome annotation and comparative genomic analysis of Bacillus subtilis MJ01, a new bio-degradation strain isolated from oil-contaminated soil. Funct Integr Genomics 2018; 18:533-543. [PMID: 29730772 DOI: 10.1007/s10142-018-0604-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 03/18/2018] [Accepted: 03/19/2018] [Indexed: 01/22/2023]
Abstract
One of the main challenges in elimination of oil contamination from polluted environments is improvement of biodegradation by highly efficient microorganisms. Bacillus subtilis MJ01 has been evaluated as a new resource for producing biosurfactant compounds. This bacterium, which produces surfactin, is able to enhance bio-accessibility to oil hydrocarbons in contaminated soils. The genome of B. subtilis MJ01 was sequenced and assembled by PacBio RS sequencing technology. One big contig with a length of 4,108,293 bp without any gap was assembled. Genome annotation and prediction of gene showed that MJ01 genome is very similar to B. subtilis spizizenii TU-B-10 (95% similarity). The comparison and analysis of orthologous genes carried out between B. subtilis MJ01, reference strain B. subtilis subsp. subtilis str. 168, and close relative spizizenii TU-B-10 by microscope platform and various bioinformatics tools. More than 88% of 4269 predicted coding sequences in MJ01 had at least one similar sequence in genome of reference strain and spizizenii TU-B-10. Despite this high similarity, some differences were detected among encoding sequences of non-ribosome protein and bacteriocins in MJ01 and spizizenii TU-B-10. MJ01 has unique nucleotide sequences and a novel predicted lasso-peptide bacteriocin; it also has not any similar nucleotide sequence in non-redundant nucleotide data base.
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Affiliation(s)
- Touraj Rahimi
- Institute of Biotechnology, Shiraz University, Shiraz, Iran
| | - Ali Niazi
- Institute of Biotechnology, Shiraz University, Shiraz, Iran.
| | | | | | - Shahab Ayatollahi
- School of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Esmaeil Ebrahimie
- Institute of Biotechnology, Shiraz University, Shiraz, Iran. .,School of Information Technology and Mathematical Sciences, Division of Information Technology, Engineering and the Environment, The University of South Australia, Adelaide, SA, Australia. .,Adelaide Medicine School, The University of Adelaide, Adelaide, SA, Australia. .,School of Biological Sciences, Faculty of Science and Engineering, Flinders University, Adelaide, SA, Australia.
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59
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Vera ECS, de Azevedo PODS, Domínguez JM, Oliveira RPDS. Optimization of biosurfactant and bacteriocin-like inhibitory substance (BLIS) production by Lactococcus lactis CECT-4434 from agroindustrial waste. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.02.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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60
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Guerra AB, Oliveira JS, Silva-Portela RCB, Araújo W, Carlos AC, Vasconcelos ATR, Freitas AT, Domingos YS, de Farias MF, Fernandes GJT, Agnez-Lima LF. Metagenome enrichment approach used for selection of oil-degrading bacteria consortia for drill cutting residue bioremediation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 235:869-880. [PMID: 29353803 DOI: 10.1016/j.envpol.2018.01.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 12/28/2017] [Accepted: 01/05/2018] [Indexed: 06/07/2023]
Abstract
Drill cuttings leave behind thousands of tons of residues without adequate treatment, generating a large environmental liability. Therefore knowledge about the microbial community of drilling residue may be useful for developing bioremediation strategies. In this work, samples of drilling residue were enriched in different culture media in the presence of petroleum, aiming to select potentially oil-degrading bacteria and biosurfactant producers. Total DNA was extracted directly from the drill cutting samples and from two enriched consortia and sequenced using the Ion Torrent platform. Taxonomic analysis revealed the predominance of Proteobacteria in the metagenome from the drill cuttings, while Firmicutes was enriched in consortia samples. Functional analysis using the Biosurfactants and Biodegradation Database (BioSurfDB) revealed a similar pattern among the three samples regarding hydrocarbon degradation and biosurfactants production pathways. However, some statistical differences were observed between samples. Namely, the pathways related to the degradation of fatty acids, chloroalkanes, and chloroalkanes were enriched in consortia samples. The degradation colorimetric assay using dichlorophenolindophenol as an indicator was positive for several hydrocarbon substrates. The consortia were also able to produce biosurfactants, with biosynthesis of iturin, lichnysin, and surfactin among the more abundant pathways. A microcosms assay followed by gas chromatography analysis showed the efficacy of the consortia in degrading alkanes, as we observed a reduction of around 66% and 30% for each consortium in total alkanes. These data suggest the potential use of these consortia in the bioremediation of drilling residue based on autochthonous bioaugmentation.
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Affiliation(s)
- Alaine B Guerra
- Department of Cellular Biology and Genetics, UFRN, Natal, Rio Grande do Norte, 59078900, Brazil
| | - Jorge S Oliveira
- Department of Cellular Biology and Genetics, UFRN, Natal, Rio Grande do Norte, 59078900, Brazil; Instituto de Engenharia de Sistemas e Computadores/Instituto Superior Técnico (INESC-ID/IST), Universidade de Lisboa, Portugal
| | - Rita C B Silva-Portela
- Department of Cellular Biology and Genetics, UFRN, Natal, Rio Grande do Norte, 59078900, Brazil
| | - Wydemberg Araújo
- Department of Cellular Biology and Genetics, UFRN, Natal, Rio Grande do Norte, 59078900, Brazil
| | - Aline C Carlos
- Department of Cellular Biology and Genetics, UFRN, Natal, Rio Grande do Norte, 59078900, Brazil
| | - Ana Tereza R Vasconcelos
- Instituto de Engenharia de Sistemas e Computadores/Instituto Superior Técnico (INESC-ID/IST), Universidade de Lisboa, Portugal
| | | | | | | | - Glauber José Turolla Fernandes
- Centro de Tecnologias do Gás e Energias Renováveis - CTGAS-ER, Natal, RN, Brazil; Universidade Potiguar, Av. Engenheiro Roberto Freire 2184, Natal, RN, 59082902, Brazil
| | - Lucymara F Agnez-Lima
- Department of Cellular Biology and Genetics, UFRN, Natal, Rio Grande do Norte, 59078900, Brazil.
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61
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Isolation, characterization, and optimization of biosurfactant production by an oil-degrading Acinetobacter junii B6 isolated from an Iranian oil excavation site. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2017. [DOI: 10.1016/j.bcab.2017.08.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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62
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Decesaro A, Machado TS, Cappellaro ÂC, Reinehr CO, Thomé A, Colla LM. Biosurfactants during in situ bioremediation: factors that influence the production and challenges in evalution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:20831-20843. [PMID: 28815413 DOI: 10.1007/s11356-017-9778-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
Research on the influence of biosurfactants on the efficiency of in situ bioremediation of contaminated soil is continuously growing. Despite the constant progress in understanding the mechanisms involved in the effects of biosurfactants, there are still many factors that are not sufficiently elucidated. There is a lack of research on autochthonous or exogenous microbial metabolism when biostimulation or bioaugmentation is carried out to produce biosurfactants at contaminated sites. In addition, studies on the application of techniques that measure the biosurfactants produced in situ are needed. This is important because, although the positive influence of biosurfactants is often reported, there are also studies where no effect or negative effects have been observed. This review aimed to examine some studies on factors that can improve the production of biosurfactants in soils during in situ bioremediation. Moreover, this work reviews the methodologies that can be used for measuring the production of these biocomposts. We reviewed studies on the potential of biosurfactants to improve the bioremediation of hydrocarbons, as well as the limitations of methods for the production of these biomolecules by microorganisms in soil.
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Affiliation(s)
- Andressa Decesaro
- Faculty of Engineering and Architecture, Postgraduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building, BR 285, km 171, Zip Code 611, Bairro São José, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Thaís Strieder Machado
- Faculty of Engineering and Architecture, Postgraduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building, BR 285, km 171, Zip Code 611, Bairro São José, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Ângela Carolina Cappellaro
- Faculty of Engineering and Architecture, Postgraduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building, BR 285, km 171, Zip Code 611, Bairro São José, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Christian Oliveira Reinehr
- Faculty of Engineering and Architecture, Postgraduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building, BR 285, km 171, Zip Code 611, Bairro São José, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Antônio Thomé
- Faculty of Engineering and Architecture, Postgraduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building, BR 285, km 171, Zip Code 611, Bairro São José, Passo Fundo, RS, CEP: 99052-900, Brazil
| | - Luciane Maria Colla
- Faculty of Engineering and Architecture, Postgraduate Program in Civil and Environmental Engineering, University of Passo Fundo, Campus I, L1 Building, BR 285, km 171, Zip Code 611, Bairro São José, Passo Fundo, RS, CEP: 99052-900, Brazil.
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63
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Greber KE. Synthesis and Surface Activity of Cationic Amino Acid-Based Surfactants in Aqueous Solution. J SURFACTANTS DETERG 2017; 20:1189-1196. [PMID: 28845101 PMCID: PMC5548851 DOI: 10.1007/s11743-017-2002-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 07/14/2017] [Indexed: 12/02/2022]
Abstract
I studied the possibility of using amino acid-based surfactants as emulsifiers at the same time as preservatives. Fourteen lipopeptides were synthesized employing a solid phase peptide synthesis procedure. All compounds were designed to be positively charged from +1 to +4 and acylated with fatty acid chain—palmitic and miristic. The surface activity of the obtained lipopeptides was tested using a semi-automatic tensiometer to calculate parameters describing the behavior of lipopeptides in the air/water interface. Such parameters as CMC, surface tension at the CMC point (σCMC), effectiveness (πCMC), and efficiency (pC20) were measured. Emulsifying properties of all lipopeptides were also examined. The studies reveal that the surface active properties of synthesized compounds strongly depend on the length of alkyl chains as well as on the composition of amino acid polar heads. The critical micelle concentration decreases with increasing alkyl chain length of lipopeptides with the same polar head. The effectiveness and efficiency decrease when the number of amino acids in the polar head increases. All lipopeptides established a very weak emulsification power and created unstable water/Miglyol 812 and water/paraffin oil emulsions. Results suggest that lipopeptides cannot be used as emulsifiers; nonetheless, it is possible to use them as auxiliary surfactants with disinfectant properties in combination with more potent emulsifiers.
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Affiliation(s)
- Katarzyna E. Greber
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Gdansk, Gdansk, Poland
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64
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Giri SS, Sen SS, Jun JW, Sukumaran V, Park SC. Role of Bacillus licheniformis VS16-Derived Biosurfactant in Mediating Immune Responses in Carp Rohu and its Application to the Food Industry. Front Microbiol 2017; 8:514. [PMID: 28400765 PMCID: PMC5368236 DOI: 10.3389/fmicb.2017.00514] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 03/13/2017] [Indexed: 01/31/2023] Open
Abstract
Multifarious applications of Bacillus licheniformis VS16-derived biosurfactant were explored. Labeo rohita fingerlings were injected intraperitoneally with 0.1 mL of phosphate-buffered saline (PBS) containing purified biosurfactant at 0 (control), 55 (S55), 110 (S110), 220 (S220), or 330 (S330) μg mL-1 concentrations. Various immunological parameters and the expression of immune-related genes were measured at 7, 14, and 21 days post-administration (dpa). At 21 dpa, fish were challenged with Aeromonas hydrophila and mortality was recorded for 14 days. Immune parameters such as lysozyme levels (39.29 ± 2.14 U mL-1), alternative complement pathway (61.21 ± 2.38 U mL-1), and phagocytic activities (33.37 ± 1.2%) were maximum (P < 0.05) in the S220 group at 14 dpa; but immunoglobulin levels (11.07 ± 0.83 mg mL-1) were highest in the S220 group at 7 dpa, compared to that in controls. Activities of digestive enzymes (amylase, protease, and lipase) were higher (P < 0.05) in the S220 and S330 groups than in the control group. Regarding cytokine gene expression, pro-inflammatory cytokines (TNF-α and IL-1β) were down-regulated (P < 0.05) in the S220 and S330 groups. Expression of IL-10, TGF-β, and IKB-α were up-regulated in the S220 and S330 groups at 14 dpa, with the highest levels in the S220 group. The expression of NF-κB p65 and IKK-β were down-regulated in treatment groups, and were lowest (P < 0.05) in the S220 group. The highest post-challenge survival rate (72.7%) was recorded in S220 group. Further, the potential of this substance to inhibit biofilm formation, and heavy metal removal from vegetables were also evaluated. Biosurfactant was effective in inhibiting biofilm formation up to 54.71 ± 1.27%. Moreover, it efficiently removed cadmium (Cd) from tested vegetables such as carrot, radish, ginger, and potato, with the highest removal efficiency (60.98 ± 1.29%) recorded in ginger contaminated with Cd. Collectively, these results suggest that isolated biosurfactant could be used in the aquaculture industry, in addition to its potential application to the food industry.
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Affiliation(s)
- Sib Sankar Giri
- Department of Biotechnology, Periyar Maniammai UniversityThanjavur, India; Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National UniversitySeoul, South Korea
| | - Shib Sankar Sen
- School of Life Sciences, Jawaharlal Nehru University New Delhi, India
| | - Jin Woo Jun
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University Seoul, South Korea
| | - V Sukumaran
- Department of Biotechnology, Periyar Maniammai University Thanjavur, India
| | - Se Chang Park
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University Seoul, South Korea
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Parthipan P, Preetham E, Machuca LL, Rahman PKSM, Murugan K, Rajasekar A. Biosurfactant and Degradative Enzymes Mediated Crude Oil Degradation by Bacterium Bacillus subtilis A1. Front Microbiol 2017; 8:193. [PMID: 28232826 PMCID: PMC5299021 DOI: 10.3389/fmicb.2017.00193] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/26/2017] [Indexed: 11/13/2022] Open
Abstract
In this work, the biodegradation of the crude oil by the potential biosurfactant producing Bacillus subtilis A1 was investigated. The isolate had the ability to synthesize degradative enzymes such as alkane hydroxylase and alcohol dehydrogenase at the time of biodegradation of hydrocarbon. The biosurfactant producing conditions were optimized as pH 7.0, temperature 40°C, 2% sucrose and 3% of yeast extract as best carbon and nitrogen sources for maximum production of biosurfactant (4.85 g l-1). Specifically, the low molecular weight compounds, i.e., C10-C14 were completely degraded, while C15-C19 were degraded up to 97% from the total hydrocarbon pools. Overall crude oil degradation efficiency of the strain A1 was about 87% within a short period of time (7 days). The accumulated biosurfactant from the biodegradation medium was characterized to be lipopeptide in nature. The strain A1 was found to be more robust than other reported biosurfactant producing bacteria in degradation efficiency of crude oil due to their enzyme production capability and therefore can be used to remove the hydrocarbon pollutants from contaminated environment.
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Affiliation(s)
- Punniyakotti Parthipan
- Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University Vellore, India
| | - Elumalai Preetham
- School of Aquatic Food Products and Technology, Kerala University of Fisheries and Ocean Studies Kochi, India
| | - Laura L Machuca
- Curtin Corrosion Engineering Industry Centre, School of Chemical and Petroleum Engineering, Curtin University, Bentley WA, Australia
| | - Pattanathu K S M Rahman
- School of Science and Engineering, Technology Futures Institute, Teesside UniversityMiddlesbrough, UK; TeeGene Biotech Ltd., Wilton CentreRedcar, UK
| | - Kadarkarai Murugan
- Division of Entomology, Department of Zoology, School of Life Sciences, Bharathiar UniversityCoimbatore, India; Thiruvalluvar UniversityVellore, India
| | - Aruliah Rajasekar
- Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University Vellore, India
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Bezza FA, Chirwa EMN. Pyrene biodegradation enhancement potential of lipopeptide biosurfactant produced by Paenibacillus dendritiformis CN5 strain. JOURNAL OF HAZARDOUS MATERIALS 2017; 321:218-227. [PMID: 27627697 DOI: 10.1016/j.jhazmat.2016.08.035] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 07/26/2016] [Accepted: 08/11/2016] [Indexed: 06/06/2023]
Abstract
Effect of biosurfactant on biodegradation of pyrene was studied using a microbial consortium predominantly composed of Pseudomonas viridiflava (49.5%) and Pseudomonas nitroreducens (32.5%) in a batch experiment containing lipopeptidic biosurfactant, produced by Paenibacillus dendritiformis CN5 strain, and mineral salt medium. The results showed that the lipopeptide at 600 and 300mgL-1 enhanced pyrene degradation to 83.5% and 67% respectively in 24days compared to 16% degradation in its absence. However degradation of pyrene was reduced to 57% as the lipopeptide supplementation was raised to 900mgL-1. This demonstrates that the biodegradation of pyrene was found to increase with an increase in the lipopeptide concentration up to a threshold level. The experimental data were fitted to the logistic kinetic model which provided best fit with a coefficient of determination (R2) values≥0.97. Maximum specific growth rate, μmax of 0.97 and 0.69d-1 were achieved in the 600 and 300mgL-1 lipopeptide amendments in comparison to 0.54d-1 in the unamended one. The carrying capacity, Xmax increased 4.4-fold in 600mgL-1 lipopeptide supplemented samples in comparison to its absence. Generally the lipopeptide showed potential application in improving bioremediation of polycyclic aromatic hydrocarbons contaminated environmental media.
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Affiliation(s)
- Fisseha Andualem Bezza
- Water Utilisation and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, Pretoria 0002, South Africa
| | - Evans M Nkhalambayausi Chirwa
- Water Utilisation and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, Pretoria 0002, South Africa.
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Zhang J, Xue Q, Gao H, Lai H, Wang P. Production of lipopeptide biosurfactants by Bacillus atrophaeus 5-2a and their potential use in microbial enhanced oil recovery. Microb Cell Fact 2016; 15:168. [PMID: 27716284 PMCID: PMC5048436 DOI: 10.1186/s12934-016-0574-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 09/28/2016] [Indexed: 12/02/2022] Open
Abstract
Background Lipopeptides are known as promising microbial surfactants and have been successfully used in enhancing oil recovery in extreme environmental conditions. A biosurfactant-producing strain, Bacillus atrophaeus 5-2a, was recently isolated from an oil-contaminated soil in the Ansai oilfield, Northwest China. In this study, we evaluated the crude oil removal efficiency of lipopeptide biosurfactants produced by B. atrophaeus 5-2a and their feasibility for use in microbial enhanced oil recovery. Results The production of biosurfactants by B. atrophaeus 5-2a was tested in culture media containing eight carbon sources and nitrogen sources. The production of a crude biosurfactant was 0.77 g L−1 and its surface tension was 26.52 ± 0.057 mN m−1 in a basal medium containing brown sugar (carbon source) and urea (nitrogen source). The biosurfactants produced by the strain 5-2a demonstrated excellent oil spreading activity and created a stable emulsion with paraffin oil. The stability of the biosurfactants was assessed under a wide range of environmental conditions, including temperature (up to 120 °C), pH (2–13), and salinity (0–50 %, w/v). The biosurfactants were found to retain surface-active properties under the extreme conditions. Additionally, the biosurfactants were successful in a test to simulate microbial enhanced oil recovery, removing 90.0 and 93.9 % of crude oil adsorbed on sand and filter paper, respectively. Fourier transform infrared spectroscopy showed that the biosurfactants were a mixture of lipopeptides, which are powerful biosurfactants commonly produced by Bacillus species. Conclusions The study highlights the usefulness of optimization of carbon and nitrogen sources and their effects on the biosurfactants production and further emphasizes on the potential of lipopeptide biosurfactants produced by B. atrophaeus 5-2a for crude oil removal. The favorable properties of the lipopeptide biosurfactants make them good candidates for application in the bioremediation of oil-contaminated sites and microbial enhanced oil recovery process.
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Affiliation(s)
- Junhui Zhang
- College of Natural Resources and Environment, Northwest A & F University, 3 Taicheng Road, 712100, Yangling, China
| | - Quanhong Xue
- College of Natural Resources and Environment, Northwest A & F University, 3 Taicheng Road, 712100, Yangling, China.
| | - Hui Gao
- College of Natural Resources and Environment, Northwest A & F University, 3 Taicheng Road, 712100, Yangling, China
| | - Hangxian Lai
- College of Natural Resources and Environment, Northwest A & F University, 3 Taicheng Road, 712100, Yangling, China
| | - Ping Wang
- College of Earth Sciences and Resources, Chang'an University, 710055, Xi'an, China
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Giri SS, Sen SS, Jun JW, Sukumaran V, Park SC. Role of Bacillus subtilis VSG4-derived biosurfactant in mediating immune responses in Labeo rohita. FISH & SHELLFISH IMMUNOLOGY 2016; 54:220-229. [PMID: 27079425 DOI: 10.1016/j.fsi.2016.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/16/2016] [Accepted: 04/08/2016] [Indexed: 06/05/2023]
Abstract
This study aimed to isolate biosurfactant from CO2-sequestering Bacillus subtilis VSG4 and to evaluate its immunostimulatory effect in Labeo rohita fingerlings. Fish were injected intraperitoneally (i.p.) with 0.1 mL of phosphate-buffered saline (PBS) containing the water-soluble fraction of purified biosurfactant at 50 (S50), 100 (S100), 200 (S200), or 300 (S300) μg mL(-1). Fish injected with PBS served as controls. Various immunological parameters, including immune-related gene expression, were measured at 14, 21, and 28 days post administration (dpa). At 28 dpa, the fish were challenged with Aeromonas hydrophila and mortality was recorded up to 14 days. Among the immune parameters tested, lysozyme levels (36.32 ± 1.79 U mL(-1)), alternative complement pathway activity (76.26 ± 2.18 U mL(-1)), phagocytic activity (32.18 ± 0.67%), and serum bactericidal activity (73.2 ± 4.7%) were significantly higher (P < 0.05) in the S200 group at 21 dpa than in the controls. Respiratory burst activity (0.386 ± 0.008 OD630nm) was the highest in the S200 group at 28 dpa. Of the immune-related genes examined, pro-inflammatory cytokines (TNF-α and IL-1β) were significantly down-regulated in the S200 and S300 groups. Expression of anti-inflammatory cytokines (IL-10 and TGF-β) as well as IKB-α was higher (P < 0.05) in the S100‒S300 groups at 21 dpa. The expression of NF-κB p65, IKK-β, MAPKp38, and Myd88 was down-regulated in the treated groups when compared to the controls. Fish in the S200 group exhibited the highest post-challenge relative survival rate (67.88%). Collectively, these results suggest that secondary metabolite (biosurfactant) isolated from B. subtilis VSG4 at 200 μg mL(-1) can positively influence immune responses, enhance disease resistance, and stimulate immune-related gene expression in L. rohita.
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Affiliation(s)
- Sib Sankar Giri
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151742, South Korea.
| | - Shib Sankar Sen
- School of Life Sciences, Jawharlal Nehru University, New Delhi, 110067, India.
| | - Jin Woo Jun
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151742, South Korea.
| | - Venkatachalam Sukumaran
- Department of Biotechnology, Periyar Maniammai University, Thanjavur, 613403, Tamil Nadu, India.
| | - Se Chang Park
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 151742, South Korea.
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Meng Y, Zhao W, You J, Gang HZ, Liu JF, Yang SZ, Ye RQ, Mu BZ. Structural Analysis of the Lipopeptide Produced by the Bacillus subtilis Mutant R2-104 with Mutagenesis. Appl Biochem Biotechnol 2016; 179:973-85. [PMID: 27020566 DOI: 10.1007/s12010-016-2044-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 03/02/2016] [Indexed: 10/22/2022]
Abstract
The lipopeptide and its homologues are a kind of the five major biosurfactants with prominent interfacial and biological activities. A suite of mutagenesis method was adopted to expose a wild lipopeptide-producing strain Bacillus subtilis HSO121 to improve lipopeptide yield, and a stable mutant named R2-104 with a 2.0-fold production of lipopeptide was obtained. Compared to that of the wild strain HSO121, the lipopeptide produced by R2-104 showed a similar surface activity, but the course profiles of lipopeptide production during cultivation were different, with the peak yield of 500 mg at about 9 h by R2-104, and 400 mg at about 5 h by HSO121. The constituent abundance of the lipopeptide homologues produced by R2-104 was also different from that by HSO121. Combined methods of ESI-MS, GC-MS and MS-MS were applied for structural characterization of lipopeptide homologues, and it showed that the lipopeptides produced by R2-104 and HSO121 were attributed to a surfactin family with different constituents. The dominant constituent of the surfactin family produced by R2-104 was anteiso C15-surfactin with a relative content of 43.8 %, while the dominant one produced by HSO121was iso C14-surfactin with a relative content of 33.1 %.
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Affiliation(s)
- Yong Meng
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Wei Zhao
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Jia You
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Hong-Ze Gang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Jin-Feng Liu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Shi-Zhong Yang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Ru-Qiang Ye
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Bo-Zhong Mu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
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Wan C, Chen S, Wen L, Liu X, Lee DJ, Yang X. Biosynthesis, characterization and potentiality of lipopeptides produced by Bacillus flexus S1 without inductive carbon sources. RSC Adv 2016. [DOI: 10.1039/c6ra17510d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study newly isolated a bacterial stain ofBacillus flexusS1 which had abilities of synthesizing lipopeptides without any inductive operations, and thus it could effectively save operational procedures or cost.
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Affiliation(s)
- Chunli Wan
- Department of Environmental Science and Engineering
- Fudan University
- Shanghai 200433
- China
| | - Si Chen
- Department of Environmental Science and Engineering
- Fudan University
- Shanghai 200433
- China
| | - Lei Wen
- Department of Environmental Science and Engineering
- Fudan University
- Shanghai 200433
- China
| | - Xiang Liu
- Department of Environmental Science and Engineering
- Fudan University
- Shanghai 200433
- China
| | - Duu-Jong Lee
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106
- Taiwan
| | - Xue Yang
- State Key Laboratory of Pollution Control and Resources Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- China
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Zhang J, Xue Q, Gao H, Lai H, Wang P. Bacterial degradation of crude oil using solid formulations of bacillus strains isolated from oil-contaminated soil towards microbial enhanced oil recovery application. RSC Adv 2016. [DOI: 10.1039/c5ra23772f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Microbial enhanced oil recovery has played a major role in enhancing crude oil recovery from depleted oil reservoirs to solve stagnant petroleum production.
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Affiliation(s)
- Junhui Zhang
- College of Natural Resources and Environment
- Northwest A & F University
- Yangling 712100
- China
| | - Quanhong Xue
- College of Natural Resources and Environment
- Northwest A & F University
- Yangling 712100
- China
| | - Hui Gao
- College of Natural Resources and Environment
- Northwest A & F University
- Yangling 712100
- China
| | - Hangxian Lai
- College of Natural Resources and Environment
- Northwest A & F University
- Yangling 712100
- China
| | - Ping Wang
- College of Earth Sciences and Resources
- Chang'an University
- Xi'an 710055
- China
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Zhang S, Wu W, Li D, Zheng Q. Separation and purification of six biosurfactant rhamnolipids by high-speed countercurrent chromatography utilizing novel solvent selection method. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1117101] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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73
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Anvari S, Hajfarajollah H, Mokhtarani B, Noghabi KA. Physiochemical and thermodynamic characterization of lipopeptide biosurfactant secreted by Bacillus tequilensis HK01. RSC Adv 2015. [DOI: 10.1039/c5ra17275f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An extensive investigation was applied to isolate biosurfactant producing bacteria from urban waste.
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Affiliation(s)
- Sanam Anvari
- Chemistry and Chemical Engineering Research Center of Iran
- Tehran
- Iran
| | | | - Babak Mokhtarani
- Chemistry and Chemical Engineering Research Center of Iran
- Tehran
- Iran
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