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Leñini C, Rodriguez Ayala F, Goñi AJ, Rateni L, Nakamura A, Grau RR. Probiotic properties of Bacillus subtilis DG101 isolated from the traditional Japanese fermented food nattō. Front Microbiol 2023; 14:1253480. [PMID: 37840737 PMCID: PMC10569484 DOI: 10.3389/fmicb.2023.1253480] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/28/2023] [Indexed: 10/17/2023] Open
Abstract
Spore-forming probiotic bacteria offer interesting properties as they have an intrinsic high stability, and when consumed, they are able to survive the adverse conditions encountered during the transit thorough the host gastrointestinal (GI) tract. A traditional healthy food, nattō, exists in Japan consisting of soy fermented by the spore-forming bacterium Bacillus subtilis natto. The consumption of nattō is linked to many beneficial health effects, including the prevention of high blood pressure, osteoporosis, and cardiovascular-associated disease. We hypothesize that the bacterium B. subtilis natto plays a key role in the beneficial effects of nattō for humans. Here, we present the isolation of B. subtilis DG101 from nattō and its characterization as a novel spore-forming probiotic strain for human consumption. B. subtilis DG101 was non-hemolytic and showed high tolerance to lysozyme, low pH, bile salts, and a strong adherence ability to extracellular matrix proteins (i.e., fibronectin and collagen), demonstrating its potential application for competitive exclusion of pathogens. B. subtilis DG101 forms robust liquid and solid biofilms and expresses several extracellular enzymes with activity against food diet-associated macromolecules (i.e., proteins, lipids, and polysaccharides) that would be important to improve food diet digestion by the host. B. subtilis DG101 was able to grow in the presence of toxic metals (i.e., chromium, cadmium, and arsenic) and decreased their bioavailability, a feature that points to this probiotic as an interesting agent for bioremediation in cases of food and water poisoning with metals. In addition, B. subtilis DG101 was sensitive to antibiotics commonly used to treat infections in medical settings, and at the same time, it showed a potent antimicrobial effect against pathogenic bacteria and fungi. In mammalians (i.e., rats), B. subtilis DG101 colonized the GI tract, and improved the lipid and protein serum homeostasis of animals fed on the base of a normal- or a deficient-diet regime (dietary restriction). In the animal model for longevity studies, Caenorhabditis elegans, B. subtilis DG101 significantly increased the animal lifespan and prevented its age-related behavioral decay. Overall, these results demonstrate that B. subtilis DG101 is the key component of nattō with interesting probiotic properties to improve and protect human health.
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Affiliation(s)
- Cecilia Leñini
- Departamento de Microbiología, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Facundo Rodriguez Ayala
- Departamento de Microbiología, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Anibal Juan Goñi
- Departamento de Microbiología, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Liliana Rateni
- Departamento de Microbiología, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Akira Nakamura
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - Roberto Ricardo Grau
- Departamento de Microbiología, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
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Priyadarsani Mandhata C, Ranjan Sahoo C, Nath Padhy R. A comprehensive overview on the role of phytocompounds in human immunodeficiency virus treatment. JOURNAL OF INTEGRATIVE MEDICINE 2023:S2095-4964(23)00040-7. [PMID: 37244763 DOI: 10.1016/j.joim.2023.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 03/21/2023] [Indexed: 05/29/2023]
Abstract
Acquired immune deficiency syndrome (AIDS) is a worldwide epidemic caused by human immunodeficiency virus (HIV) infection. Newer medicines for eliminating the viral reservoir and eradicating the virus are urgently needed. Attempts to locate relatively safe and non-toxic medications from natural resources are ongoing now. Natural-product-based antiviral candidates have been exploited to a limited extent. However, antiviral research is inadequate to counteract for the resistant patterns. Plant-derived bioactive compounds hold promise as powerful pharmacophore scaffolds, which have shown anti-HIV potential. This review focuses on a consideration of the virus, various possible HIV-controlling methods and the recent progress in alternative natural compounds with anti-HIV activity, with a particular emphasis on recent results from natural sources of anti-HIV agents. Please cite this article as: Mandhata CP, Sahoo CR, Padhy RN. A comprehensive overview on the role of phytocompounds in human immunodeficiency virus treatment. J Integr Med. 2023; Epub ahead of print.
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Affiliation(s)
- Chinmayee Priyadarsani Mandhata
- Central Research Laboratory, Institute of Medical Sciences and SUM Hospital, Siksha O Anusandhan Deemed to be University, Bhubaneswar, Odisha 751003, India
| | - Chita Ranjan Sahoo
- Central Research Laboratory, Institute of Medical Sciences and SUM Hospital, Siksha O Anusandhan Deemed to be University, Bhubaneswar, Odisha 751003, India
| | - Rabindra Nath Padhy
- Central Research Laboratory, Institute of Medical Sciences and SUM Hospital, Siksha O Anusandhan Deemed to be University, Bhubaneswar, Odisha 751003, India.
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Ding W, Li Y, Chen M, Chen R, Tian X, Yin H, Zhang S. Structures and antitumor activities of ten new and twenty known surfactins from the deep-sea bacterium Limimaricola sp. SCSIO 53532. Bioorg Chem 2021; 120:105589. [PMID: 34998120 DOI: 10.1016/j.bioorg.2021.105589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/04/2021] [Accepted: 12/26/2021] [Indexed: 11/28/2022]
Abstract
Surfactins are natural biosurfactants with myriad potential applications in the areas of healthcare and environment. However, surfactins were almost exclusively produced by the bacterium Bacillus species in previous reported literatures, together with difficulty in isolating pure monomer, which resulted in making extensive effort to remove duplication and little discovery of new surfactins in recent years. In the present study, the result of Molecular Networking indicated that Limimaricola sp. SCSIO 53532 might well be a potential resource for surfacin-like compounds based on OSMAC strategy. To search for new surfactins with significant biological activity, further study was undertaken on the strain. As a result, ten new surfactins (1-10), along with twenty known surfactins (11-30), were isolated from the ethyl acetate extract of SCSIO 53532. Their chemical structures were established by detailed 1D and 2D NMR spectroscopy, HRESIMS data, secondary ion mass spectrometry (MS/MS) analysis, and chemical degradation (Marfey's method) analysis. Cytotoxic activities of twenty-seven compounds against five human tumor cell lines were tested, and five compounds showed significant antitumor activities with IC50 values less than 10 μM. Furtherly, analysis of structure-activity relationships revealed that the branch of side chain, the esterification of Glu or Asp residue, and the amino acid residue of position 7 possessed a great influence on antitumor activity.
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Affiliation(s)
- Wenping Ding
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanqun Li
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Min Chen
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rouwen Chen
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Xinpeng Tian
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Hao Yin
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Si Zhang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
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Moutinho LF, Moura FR, Silvestre RC, Romão-Dumaresq AS. Microbial biosurfactants: A broad analysis of properties, applications, biosynthesis, and techno-economical assessment of rhamnolipid production. Biotechnol Prog 2020; 37:e3093. [PMID: 33067929 DOI: 10.1002/btpr.3093] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 09/30/2020] [Accepted: 10/13/2020] [Indexed: 12/12/2022]
Abstract
Biosurfactants are surface-active molecules originated from renewable resources, which are produced by microbial fermentation or chemical/enzymatic catalysis. These molecules present important advantages as compared to petrochemical surfactants, given their resistance to extreme conditions, biodegradability, specificity, and environmental compatibility. Besides that, the high production costs hinder its commercialization. In this way, this article aimed to analyze microbial biosurfactants production, focusing on the optimization of metabolic pathways and production processes, to identify key aspects and provide alternatives to allow a cost-effective production at industrial scale. This was achieved by a broad analysis of biosurfactants properties, applications, and biosynthetic pathways (in terms of yield, cofactors, and energy), in addition to an assessment of production-associated costs. As a result of the present extensive data survey and analysis, key production aspects are disclosed. The metabolic pathway yield analysis demonstrated that production of biosurfactants can be significantly improved (highest theoretical yield was 0.47 gbiosurfactant /gsubstrate ) by the use of biomolecular engineering techniques to generate optimized synthetic pathways. With an alternative proposed pathway for surfactin, yield was improved and imbalance in cofactors and ATP was reduced. Analysis of productive costs indicated that to make rhamnolipids commercial production feasible, the main efforts should focus on lowering substrate costs as well as the identification of energy-efficient unit operations to lower electricity cost, since these parameters accounted for 19.36 and 78.22%, respectively, of the production costs. The data generated by this analysis highlight the need for multidisciplinary collaboration to make rhamnolipids economically feasible, including biomolecular engineering and process intensification.
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Affiliation(s)
- Liza Fernandes Moutinho
- SENAI Innovation Institute for Biosynthetics and Fibers, SENAI CETIQT, Rio de Janeiro, Brazil
| | - Felipe Ramalho Moura
- SENAI Innovation Institute for Biosynthetics and Fibers, SENAI CETIQT, Rio de Janeiro, Brazil
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Kanazawa S, Morimoto K, Tabata E, Okura A, Ikemoto Y, Yamamoto K, de Campo L, Akiba I. Self-Assembly of Surfactin into Nanofibers with Hydrophilic Channels in Nonpolar Organic Media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:7627-7633. [PMID: 32490677 DOI: 10.1021/acs.langmuir.0c01271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We investigated the self-assembly of surfactin (SFNa), a cyclic peptide amphiphile produced by Bacillus subtilis, in a nonpolar organic solvent, namely, cyclohexane (CHx). The CHx solution of SFNa formed a thermoreversible organogel. Transmission electron microscopy and small-angle X-ray scattering (SAXS) analyses showed that gelation of the CHx solution of SFNa was caused by physical cross-linking of SFNa nanofibers. Wide-angle X-ray diffraction and Fourier-transform infrared analyses showed that the SFNa nanofibers were formed by one-dimensional stacking of SFNa rings with a period of 0.48 nm corresponding to the length of inter-ring hydrogen bonds between amide groups. A combination of SAXS and small-angle neutron scattering investigations of CHx and deuterated CHx solutions of SFNa nanofibers containing H2O or D2O showed that the SFNa nanofibers had a hydrophilic interior and formed water channels by water incorporation in this region.
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Affiliation(s)
- Satoshi Kanazawa
- Department of Chemistry and Biochemistry, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu 8080135, Japan
| | - Kosuke Morimoto
- Department of Chemistry and Biochemistry, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu 8080135, Japan
| | - Eri Tabata
- Department of Chemistry and Biochemistry, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu 8080135, Japan
| | - Aya Okura
- Department of Chemistry and Biochemistry, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu 8080135, Japan
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Facility, 1-1-1 Kouto, Sayo, Hyogo 6795198, Japan
| | - Katsuhiro Yamamoto
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Liliana de Campo
- Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
| | - Isamu Akiba
- Department of Chemistry and Biochemistry, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu 8080135, Japan
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Mohd Isa MH, Shamsudin NH, Al-Shorgani NKN, Alsharjabi FA, Kalil MS. Evaluation of antibacterial potential of biosurfactant produced by surfactin-producing Bacillus isolated from selected Malaysian fermented foods. FOOD BIOTECHNOL 2020. [DOI: 10.1080/08905436.2019.1710843] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mohd Hafez Mohd Isa
- Faculty of Science and Technology, Universiti Sains Islam Malaysia, Nilai, Malaysia
| | | | - Najeeb Kaid Nasser Al-Shorgani
- Research Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
- Department of Applied Microbiology, Faculty of Applied Sciences, Taiz University, Taiz, Yemen
| | | | - Mohd Sahaid Kalil
- Research Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
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Ranmadugala D, Ebrahiminezhad A, Manley-Harris M, Ghasemi Y, Berenjian A. The effect of iron oxide nanoparticles on Bacillus subtilis biofilm, growth and viability. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.07.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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8
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Qian S, Sun J, Lu H, Lu F, Bie X, Lu Z. L-glutamine efficiently stimulates biosynthesis of bacillomycin D in Bacillus subtilis fmbJ. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.04.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Morejón MC, Laub A, Kaluđerović GN, Puentes AR, Hmedat AN, Otero-González AJ, Rivera DG, Wessjohann LA. A multicomponent macrocyclization strategy to natural product-like cyclic lipopeptides: synthesis and anticancer evaluation of surfactin and mycosubtilin analogues. Org Biomol Chem 2017; 15:3628-3637. [DOI: 10.1039/c7ob00459a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Two birds in one shot: oligopeptides can be cyclized and lipidated in one step with multicomponent reactions.
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Affiliation(s)
- Micjel C. Morejón
- Department of Bioorganic Chemistry
- Leibniz Institute of Plant Biochemistry
- Halle/Saale
- Germany
- Center for Natural Products Research
| | - Annegret Laub
- Department of Bioorganic Chemistry
- Leibniz Institute of Plant Biochemistry
- Halle/Saale
- Germany
| | - Goran N. Kaluđerović
- Department of Bioorganic Chemistry
- Leibniz Institute of Plant Biochemistry
- Halle/Saale
- Germany
| | - Alfredo R. Puentes
- Department of Bioorganic Chemistry
- Leibniz Institute of Plant Biochemistry
- Halle/Saale
- Germany
- Center for Natural Products Research
| | - Ali N. Hmedat
- Department of Bioorganic Chemistry
- Leibniz Institute of Plant Biochemistry
- Halle/Saale
- Germany
| | | | - Daniel G. Rivera
- Department of Bioorganic Chemistry
- Leibniz Institute of Plant Biochemistry
- Halle/Saale
- Germany
- Center for Natural Products Research
| | - Ludger A. Wessjohann
- Department of Bioorganic Chemistry
- Leibniz Institute of Plant Biochemistry
- Halle/Saale
- Germany
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Aleti G, Lehner S, Bacher M, Compant S, Nikolic B, Plesko M, Schuhmacher R, Sessitsch A, Brader G. Surfactin variants mediate species-specific biofilm formation and root colonization in Bacillus. Environ Microbiol 2016; 18:2634-45. [PMID: 27306252 DOI: 10.1111/1462-2920.13405] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cyclic lipopeptides (cLP) and especially surfactins produced by Bacillus spp. trigger biofilm formation and root colonization and are crucial for biocontrol activity and systemic resistance in plants. Bacillus atrophaeus 176s isolated from the moss Tortella tortuosa produces the cLP fengycins, iturins and surfactins, possesses antifungal activities and can protect tomato, lettuce and sugar beet against Rhizoctonia solani infection. In B. atrophaeus we identified for the first time the variant surfactin C, which differs from surfactin A produced by B. subtilis and B. amyloliquefaciens by an isoleucine instead of a leucine at position 7 of the lipopeptide backbone. The analysis of the complete surfactin gene clusters revealed that the dissimilarity is encoded in the adenylation domain of srfC and show that surfactin variations are distributed in a species-specific manner in bacilli. We demonstrate that the surfactin A and C with subtle structural differences have varying signal strengths on biofilm formation and root colonization and act specifically on the respective producing strain. This became evident as biofilm formation and root colonization but not swarming motility in surfactin biosynthesis mutants was restored differentially in the presence of exogenously supplemented cognate and non-cognate surfactin variants.
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Affiliation(s)
- Gajender Aleti
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Sylvia Lehner
- Department of Agrobiotechnology (IFA-Tulln), Center for Analytical Chemistry, University of Natural Resources and Life Sciences (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Markus Bacher
- Department of Chemistry, University of Natural Resources and Life Sciences (BOKU), UFT Research Center Tulln, Konrad-Lorenz-Str. 24, Tulln, A-3430, Austria
| | - Stéphane Compant
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Branislav Nikolic
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Maja Plesko
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Rainer Schuhmacher
- Department of Agrobiotechnology (IFA-Tulln), Center for Analytical Chemistry, University of Natural Resources and Life Sciences (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Angela Sessitsch
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
| | - Günter Brader
- Health & Environment Department, Bioresources Unit, AIT Austrian Institute of Technology GmbH, AIT, Konrad Lorenz Strasse 24, Tulln, A-3430, Austria
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Pang X, Zhao J, Fang X, Liu H, Zhang Y, Cen S, Yu L. Surfactin derivatives from Micromonospora sp. CPCC 202787 and their anti-HIV activities. J Antibiot (Tokyo) 2016; 70:105-108. [PMID: 27301660 DOI: 10.1038/ja.2016.63] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 04/12/2016] [Accepted: 04/28/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Xu Pang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jianyuan Zhao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaomei Fang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Hongyu Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yuqin Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shan Cen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Liyan Yu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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Tanaka K, Amaki Y, Ishihara A, Nakajima H. Synergistic Effects of [Ile⁷]Surfactin Homologues with Bacillomycin D in Suppression of Gray Mold Disease by Bacillus amyloliquefaciens Biocontrol Strain SD-32. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5344-5353. [PMID: 25976169 DOI: 10.1021/acs.jafc.5b01198] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We previously reported that Bacillus amyloliquefaciens biocontrol strain SD-32 produces powerful antifungal lipopeptides, C17 bacillomycin D homologues. In the course of the investigation we found that the antifungal activity of the culture supernatant of this bacterium was not ascribed exclusively to bacillomycin D. We attempted to identify metabolites other than bacillomycin D to gain insight into the mechanism for the biocontrol by this bacterium. After purifying the fractions of the culture supernatant exhibiting synergistic activity with bacillomycin D, we isolated two new cyclic lipodepsipeptides, anteiso-C13 and iso-C13 [Ile(7)]surfactins, together with three known [Ile(7)]surfactins. Interestingly, [Ile(7)]surfactins showed synergistic activities with bacillomycin D to gray mold disease on cucumber leaves but not to Botrytis cinerea itself in vitro, suggesting that the synergistic effects might be on infection processes of the fungus. Actually, we observed that they did not show synergistic actions on conidial germination or mycelial growth of B. cinerea on the leaves.
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Affiliation(s)
- Keijitsu Tanaka
- †Tsukuba Research and Technology Center, SDS Biotech K.K., Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Yusuke Amaki
- †Tsukuba Research and Technology Center, SDS Biotech K.K., Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Atsushi Ishihara
- ‡Department of Agricultural Chemistry, Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan
| | - Hiromitsu Nakajima
- ‡Department of Agricultural Chemistry, Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan
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Susilowati R, Sabdono A, Widowati I. Isolation and Characterization of Bacteria Associated with Brown Algae Sargassum spp. from Panjang Island and their Antibacterial Activities. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.proenv.2015.01.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Slivinski CT, Mallmann E, de Araújo JM, Mitchell DA, Krieger N. Production of surfactin by Bacillus pumilus UFPEDA 448 in solid-state fermentation using a medium based on okara with sugarcane bagasse as a bulking agent. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.06.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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Ghribi D, Abdelkefi-Mesrati L, Boukedi H, Elleuch M, Ellouze-Chaabouni S, Tounsi S. The impact of the Bacillus subtilis SPB1 biosurfactant on the midgut histology of Spodoptera littoralis (Lepidoptera: Noctuidae) and determination of its putative receptor. J Invertebr Pathol 2011; 109:183-6. [PMID: 22079884 DOI: 10.1016/j.jip.2011.10.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 10/27/2011] [Accepted: 10/29/2011] [Indexed: 10/15/2022]
Abstract
SPB1 is a Bacillus subtilis strain producing a lipopeptide biosurfactant. The insecticidal activity of this biosurfactant was evaluated against the Egyptian cotton leaf worm (Spodoptera littoralis). It displayed toxicity with an LC(50) of 251 ng/cm(2). The histopathological changes occurred in the larval midgut of S. littoralis treated with B. subtilis SPB1 biosurfactant were vesicle formation in the apical region, cellular vacuolization and destruction of epithelial cells and their boundaries. Ligand-blotting experiments with S. littoralis brush border membrane vesicles showed binding of SPB1 biosurfactant to a protein of 45 kDa corresponding to its putative receptor. The latter differs in molecular size from those recognized by Bacillus thuringiensis Vip3A and Cry1C toxins, commonly known by their activity against S. littoralis. This result wires the application of B. subtilis biosurfactant for effective control of S. littoralis larvae, particularly in the cases where S. littoralis will develop resistance against B. thuringiensis toxins.
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Affiliation(s)
- Dhouha Ghribi
- Unit of Enzymes and Bioconversion, National School of Engineers of Sfax, University of Sfax, BP W, 3038 Sfax, Tunisia
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Zou A, Liu J, Garamus VM, Zheng K, Willumeit R, Mu B. Interaction between the natural lipopeptide [Glu1, Asp5)] surfactin-C15 and hemoglobin in aqueous solution. Biomacromolecules 2010; 11:593-9. [PMID: 20099842 DOI: 10.1021/bm9011453] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The interaction between natural lipopeptide [Glu(1), Asp(5)] surfactin-C15 (surfactin) and hemoglobin (Hb) has been studied. Surface tension measurements show that the critical micelle concentration (cmc) of surfactin increases from 1.54 x 10(-5) to 3.86 x 10(-5) mol/L with Hb. The UV spectra display that the effect of surfactin on Hb exhibits strong concentration-dependent fashion and the aquometHb convert to hemichrome at high surfactin concentration. Small-angle neutron scattering (SANS) and freeze-fracture transmission electron microscopy (FF-TEM) measurements show that surfactin result in the formation of a fractal structure representing a "necklace model" of micelle-like clusters randomly distributed along the protein polypeptide chain at high surfactin concentration. Far-UV circular dichroism (CD) results confirmed that surfactin can disrupt the helical structure of protein at high concentrations, although the enhanced native-like behavior of protein by low concentration of surfactin was observed. The microenvironment change around Phe amino residues and disulfide bonds of Hb was obtained from near-UV CD spectra.
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Affiliation(s)
- Aihua Zou
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, PR China
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Boettcher C, Kell H, Holzwarth JF, Vater J. Flexible loops of thread-like micelles are formed upon interaction of L-alpha-dimyristoyl-phosphatidylcholine with the biosurfactant surfactin as revealed by cryo-electron tomography. Biophys Chem 2010; 149:22-7. [PMID: 20406718 DOI: 10.1016/j.bpc.2010.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 03/08/2010] [Accepted: 03/10/2010] [Indexed: 10/19/2022]
Abstract
Vesicles of L-alpha-dimyristoyl-phosphatidylcholine (DMPC) are known to disintegrate upon treatment with surfactin, a lipoheptapeptide biosurfactant from Bacillus subtilis OKB 105, as was observed by static light scattering (SLS) and cryo-transmission electron microscopy (cryo-TEM) recently. The lysis of DMPC bilayers occurs strongly dependent on the surfactin concentration according to a three-stage model. Unilamellar DMPC vesicles are disrupted to form sheet-like lamellar intermediates at a moderate surfactant concentration, but undergo a transition towards smaller particles of unknown structure at a higher surfactant concentration according to earlier neutron scattering experiments. Here we present direct structural evidence from cryo-electron tomography data that thread-like micelles with a uniform diameter of 6.5 nm are organized into loops of different sizes at a surfactin concentration of > 15 mol%.
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Affiliation(s)
- Christoph Boettcher
- Forschungszentrum für Elektronenmikroskopie, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstr. 36a, D-14195 Berlin, Germany.
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Zou A, Liu J, Garamus VM, Yang Y, Willumeit R, Mu B. Micellization Activity of the Natural Lipopeptide [Glu1, Asp5] Surfactin-C15 in Aqueous Solution. J Phys Chem B 2010; 114:2712-8. [DOI: 10.1021/jp908675s] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aihua Zou
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Jing Liu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Vasil M. Garamus
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Ying Yang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Regine Willumeit
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
| | - Bozhong Mu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China, and GKSS Research Center, Max-Planck-Str.1, 21502 Geesthacht, Germany
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Surfactin: biosynthesis, genetics and potential applications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 672:316-23. [PMID: 20545293 DOI: 10.1007/978-1-4419-5979-9_24] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Even after forty years of its discovery by Arima et al, surfactin, a potent lipopeptide biosurfactant, still attracts attention and fancy of the applied microbiologists and biotechnologists worldwide, mainly due to its versatile bioactive properties and potential industrial implications. Starting from its first invented characteristic as an inhibitor of fibrin clot formation coupled with its significant ability to reduce surface tension of water, it has been credited with antifungal, antiviral, antitumor, insecticidal and antimycoplasma activities. These properties of therapeutic and commercial importance and its recent use as an enhanced oil recovery and a bioremediation agent make it a truly versatile biomolecule, the commercial potential of which could not be fully realized, particularly as a therapeutic agent, mainly because of its hemolytic property. This chapter thus addresses the issues related to the versatile nature of the most studied microbial surfactant, surfactin and its potential commercial and health-care applications.
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Rodrigues LR, Teixeira JA. Biomedical and therapeutic applications of biosurfactants. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 672:75-87. [PMID: 20545275 DOI: 10.1007/978-1-4419-5979-9_6] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
During the last years, several applications of biosurfactants with medical purposes have been reported. Biosurfactants are considered relevant molecules for applications in combating many diseases and as therapeutic agents due to their antibacterial, antifungal and antiviral activities. Furthermore, their role as anti-adhesive agents against several pathogens illustrate their utility as suitable anti-adhesive coating agents for medical insertional materials leading to a reduction of a large number of hospital infections without the use of synthetic drugs and chemicals. Biomedical and therapeutic perspectives of biosurfactants applications are presented and discussed in this chapter.
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Affiliation(s)
- Lígia R Rodrigues
- Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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Microbial Surfactants and Their Potential Applications: An Overview. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 672:54-64. [DOI: 10.1007/978-1-4419-5979-9_4] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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25
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Li Y, Zou AH, Ye RQ, Mu BZ. Counterion-Induced Changes to the Micellization of Surfactin-C16 Aqueous Solution. J Phys Chem B 2009; 113:15272-7. [DOI: 10.1021/jp9062862] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yi Li
- Laboratory for Advanced Materials and Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Ai-Hua Zou
- Laboratory for Advanced Materials and Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Ru-Qiang Ye
- Laboratory for Advanced Materials and Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Bo-Zhong Mu
- Laboratory for Advanced Materials and Institute of Applied Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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Mohammadipour M, Mousivand M, Salehi Jouzani G, Abbasalizadeh S. Molecular and biochemical characterization of Iranian surfactin-producing Bacillus subtilis isolates and evaluation of their biocontrol potential against Aspergillus flavus and Colletotrichum gloeosporioides. Can J Microbiol 2009; 55:395-404. [PMID: 19396239 DOI: 10.1139/w08-141] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The characterization of surfactin-producing Bacillus subtilis isolates collected from different ecological zones of Iran is presented. Characterization was performed using blood agar, PCR, drop-collapse, and reverse-phase high-performance liquid chromatography (HPLC) analyses, and the isolates' biocontrol effects against the aflatoxin-producing agent Aspergillus flavus and the citrus antracnosis agent Colletotrichum gloeosporioides were studied. In total, 290 B. subtilis isolates were isolated from phylosphere and rhizosphere samples collected from fields and gardens of 5 provinces of Iran. Blood agar assays showed that 185 isolates produced different biosurfactants. Isolates containing the sfp gene, coding for surfactin, were detected using the PCR method. It was found that 14 different isolates contained the sfp gene. Drop-collapse assays, which detect isolates with high production of surfactin, showed that 7 isolates produced high levels of surfactin. It was found from HPLC analysis that the isolates containin the sfp gene produced between 55 and 1610 mg of surfactin per litre of broth medium. Four isolates, named BS119m, BS116l, N3dn, and BS113c, produced more than 1000 mg of surfactin per litre of broth. The highest surfactin production level was observed for isolate BS119m (1610 mg/L). The antagonistic potential of the sfp gene-containing isolates was determined using dual culture and chloroform vapour methods. Our bioassay results indicated that isolate BS119m showed high inhibitory effects against A. flavus (100%) and C. gloeosporioides (88%). Furthermore, the effect of purified surfactin on the growth of A. flavus was evaluated. Mycelia growth was considerably reduced with increasing concentration of surfactin, and 36%, 54%, 84%, and 100% inhibitions of mycelia growth were, respectively, observed at 20, 40, 80, and 160 mg/L after 7 days of incubation.
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Affiliation(s)
- Matin Mohammadipour
- Department of Microbial Biotechnology and Biosafety, Agricultural Biotechnology Research Institute of Iran (ABRII), Mahdasht Road, Karaj, Iran
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27
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Li Y, Ye RQ, Mu BZ. Influence of Sodium Ions on Micelles of Surfactin-C16 in Solution. J SURFACTANTS DETERG 2008. [DOI: 10.1007/s11743-008-1094-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Nanoscale membrane activity of surfactins: Influence of geometry, charge and hydrophobicity. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2008; 1778:2058-68. [DOI: 10.1016/j.bbamem.2008.03.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2008] [Revised: 03/21/2008] [Accepted: 03/31/2008] [Indexed: 11/18/2022]
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Bouffioux O, Berquand A, Eeman M, Paquot M, Dufrêne YF, Brasseur R, Deleu M. Molecular organization of surfactin–phospholipid monolayers: Effect of phospholipid chain length and polar head. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2007; 1768:1758-68. [PMID: 17532292 DOI: 10.1016/j.bbamem.2007.04.015] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2006] [Revised: 04/19/2007] [Accepted: 04/20/2007] [Indexed: 11/26/2022]
Abstract
Mixed monolayers of the surface-active lipopeptide surfactin-C(15) and various lipids differing by their chain length (DMPC, DPPC, DSPC) and polar headgroup (DPPC, DPPE, DPPS) were investigated by atomic force microscopy (AFM) in combination with molecular modeling (Hypermatrix procedure) and surface pressure-area isotherms. In the presence of surfactin, AFM topographic images showed phase separation for each surfactin-phospholipid system except for surfactin-DMPC, which was in good agreement with compression isotherms. On the basis of domain shape and line tension theory, we conclude that the miscibility between surfactin and phospholipids is higher for shorter chain lengths (DMPC>DPPC>DSPC) and that the polar headgroup of phospholipids influences the miscibility of surfactin in the order DPPC>DPPE>DPPS. Molecular modeling data show that mixing surfactin and DPPC has a destabilizing effect on DPPC monolayer while it has a stabilizing effect towards DPPE and DPPS molecular interactions. Our results provide valuable information on the activity mechanism of surfactin and may be useful for the design of surfactin delivery systems.
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Affiliation(s)
- O Bouffioux
- Centre de Biophysique Moléculaire Numérique, Faculté Universitaire des Sciences Agronomiques de Gembloux, Passage des Déportés, 2, B-5030 Gembloux, Belgium
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Al-Ajlani MM, Sheikh MA, Ahmad Z, Hasnain S. Production of surfactin from Bacillus subtilis MZ-7 grown on pharmamedia commercial medium. Microb Cell Fact 2007; 6:17. [PMID: 17550616 PMCID: PMC1894814 DOI: 10.1186/1475-2859-6-17] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2007] [Accepted: 06/05/2007] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Commercial medium (Pharmamedia) was investigated for the production of surfactin by Bacillus subtilis MZ-7. Different media (defined, semi-defined, and complex media) were compared for the production of surfactin after fixing the least influential variables in standardized fermentation conditions. Carbohydrate and nitrogen supplements were also tried to improve production in Pharmamedia. RESULTS Surfactin production was confirmed using PCR along with other analytical techniques and monitored by RP-HPLC and MALDI-TOF-MS. We found that optimized and brain heart infusion media were best for production of surfactin (280 mg/L) and a relatively comparable production with Pharmamedia (220 mg/L), however, supplementing Pharmamedia with Fe+ (4.0 mM) and sucrose (2 g/L) leads to a maximum production of about (300 mg/L). CONCLUSION Cottonseed-derived medium proved to be a suitable substrate for the production of bioactive substances including surfactin, a useful compound in both medical and biotechnological fields. The medium provided not only higher product accumulations but at considerably lower cost with potential for large scale industrial applications.
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Affiliation(s)
- Muaaz Mutaz Al-Ajlani
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e- Azam Campus. Lahore, Pakistan
| | - Muhammad Abid Sheikh
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e- Azam Campus. Lahore, Pakistan
| | - Zeeshan Ahmad
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e- Azam Campus. Lahore, Pakistan
| | - Shahida Hasnain
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quaid-e- Azam Campus. Lahore, Pakistan
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31
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Lee SC, Kim SH, Park IH, Chung SY, Choi YL. Isolation and structural analysis of bamylocin A, novel lipopeptide from Bacillus amyloliquefaciens LP03 having antagonistic and crude oil-emulsifying activity. Arch Microbiol 2007; 188:307-12. [PMID: 17530228 DOI: 10.1007/s00203-007-0250-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Revised: 03/11/2007] [Accepted: 04/17/2007] [Indexed: 10/23/2022]
Abstract
Bacillus amyloliquefaciens strain LP03 isolated from soil, produced an antagonistic compound that strongly inhibited the growth of plant-pathogenic fungi and a lipopeptide biosurfactant. Also, isolated strain LP03 had a marked crude oil-emulsifying activity as it developed a clear zone around the colony after incubation for 24 h at 37 degrees C. LP03 was identified as Bacillus amyloliquefaciens by analysis of partial 16 S rRNA gene and partial gyrA gene sequence. The lipopeptide was purified by acid precipitation of cell-free culture broth, extraction of the precipitates with methanol, silica gel column chromatography, and reverse-phase, high-pressure liquid chromatography. The purified biosurfactant was analyzed biochemical structure by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF) and electrospray ionization mass spectrometry/mass spectrometry (ESI-MS/MS). The masses of the two peaks were observed by HPLC chromatography. Their masses were determined to be 1,044 and 1,058 m/z with MALDI-TOF mass spectrometry. As constituents of the peptide and lipophilic part of the m/z 1,022.6, seven amino acids (Glu-Leu-Met-Leu-Pro-Leu-Leu) and beta-hydroxy-C13 fatty acid were determined by ESI-MS/MS. The lipopeptide of 1,022.6 Da differed from surfactins in the substitution of leucine, valine and aspartic acid in positions 3, 4, and 5 by methionine, leucine, and proline, respectively. Novel lipopeptide was designated as bamylocin A.
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MESH Headings
- Antifungal Agents/isolation & purification
- Antifungal Agents/pharmacology
- Bacillus/chemistry
- Bacillus/classification
- Bacillus/isolation & purification
- Chemical Fractionation
- Chromatography, Gel
- Chromatography, High Pressure Liquid
- DNA Gyrase/genetics
- DNA, Fungal/chemistry
- DNA, Fungal/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Emulsifying Agents/isolation & purification
- Emulsifying Agents/pharmacology
- Fatty Acids/analysis
- Fungi/drug effects
- Korea
- Lipoproteins/isolation & purification
- Lipoproteins/pharmacology
- Molecular Weight
- Petroleum/metabolism
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, Protein
- Soil Microbiology
- Spectrometry, Mass, Electrospray Ionization
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
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Affiliation(s)
- Sang-Cheol Lee
- Department of Biotechnology, Faculty of Natural Resources and Life Science, Dong-A University, Busan 604-714, Korea
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Kell H, Holzwarth JF, Boettcher C, Heenan RK, Vater J. Physicochemical studies of the interaction of the lipoheptapeptide surfactin with lipid bilayers of L-alpha-dimyristoyl phosphatidylcholine. Biophys Chem 2007; 128:114-24. [PMID: 17383076 DOI: 10.1016/j.bpc.2007.03.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2006] [Revised: 03/04/2007] [Accepted: 03/06/2007] [Indexed: 10/23/2022]
Abstract
To understand the biological action of surfactin from Bacillus subtilis we investigated its effects on the phase transition of L-alpha-dimyristoyl phosphatidylcholine (DMPC)-vesicles from the crystalline to the fluid state using differential scanning calorimetry; light scattering; small angle neutron scattering and cryo-electron microscopy. DSC-thermograms revealed two phase transition peaks. Light scattering profiles showed two branches with characteristic hysteresis phenomena. With both techniques the same values of the phase transition temperatures T(m1) and T(m2) of 23.5 and 23 degrees C were obtained indicating two forms of DMPC-surfactin aggregates which could be visualized by cryo-electron microscopy. Until 4 mol% surfactin the vesicular form predominated, but was accompanied by bilayered membrane fragments by increasing the biosurfactant concentrations. At surfactin concentrations higher than 15 mol% smaller DMPC-surfactin micelles of ellipsoidal conformation were formed, as demonstrated by small angle neutron scattering. In addition, by "Poor Man's" temperature-jump-relaxation spectroscopy slow transients in the phase transition of vesicular DMPC-surfactin aggregates with relaxation times of 20-30 s were detected which presumably indicate the slow dissipation of intermediate lipid-and surfactin domains formed after the main phase transition on the way to the fluid state. This process is accelerated by surfactin.
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Affiliation(s)
- Henny Kell
- Fritz-Haber-Institut, Max-Planck-Society, Faradayweg 4-6, D-14195 Berlin, Germany
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33
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Rodrigues L, Banat IM, Teixeira J, Oliveira R. Biosurfactants: potential applications in medicine. J Antimicrob Chemother 2006; 57:609-18. [PMID: 16469849 DOI: 10.1093/jac/dkl024] [Citation(s) in RCA: 483] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The use and potential commercial application of biosurfactants in the medical field has increased during the past decade. Their antibacterial, antifungal and antiviral activities make them relevant molecules for applications in combating many diseases and as therapeutic agents. In addition, their role as anti-adhesive agents against several pathogens indicates their utility as suitable anti-adhesive coating agents for medical insertional materials leading to a reduction in a large number of hospital infections without the use of synthetic drugs and chemicals. This review looks at medicinal and therapeutic perspectives on biosurfactant applications.
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Affiliation(s)
- Lígia Rodrigues
- Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, Braga, Portugal.
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Dufour S, Deleu M, Nott K, Wathelet B, Thonart P, Paquot M. Hemolytic activity of new linear surfactin analogs in relation to their physico-chemical properties. Biochim Biophys Acta Gen Subj 2005; 1726:87-95. [PMID: 16026933 DOI: 10.1016/j.bbagen.2005.06.015] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Revised: 06/15/2005] [Accepted: 06/24/2005] [Indexed: 11/16/2022]
Abstract
New linear analogs of surfactin have been synthesized. Their physico-chemical parameters were determined. The results indicate that these linear products show surface activities although they are lowered compared to those of cyclic compounds. The hemolytic activities have also been assayed. In contrast with cyclic surfactins, no significant hemolysis occurs for the linear products in the range of concentrations tested. Moreover, a protective effect against Triton X-100 induced hemolysis has been highlighted for linear surfactins. The concentration at which this protective effect happens is correlated directly to the CMC, and inversely to the acyl chain length of the product. In a hypotonic medium, analogs having a long acyl chain tend to increase the hemolysis, meanwhile the product with the shortest chain tends to decrease it.
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Affiliation(s)
- Samuel Dufour
- Unité de chimie biologique industrielle, Faculté universitaire des sciences agronomiques de Gembloux, 2, passage des déportés, Gembloux 5030, Belgium.
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35
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Liu X, Huang W, Wang E. An electrochemical study on the interaction of surfactin with a supported bilayer lipid membrane on a glassy carbon electrode. J Electroanal Chem (Lausanne) 2005. [DOI: 10.1016/j.jelechem.2004.12.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Batrakov SG, Rodionova TA, Esipov SE, Polyakov NB, Sheichenko VI, Shekhovtsova NV, Lukin SM, Panikov NS, Nikolaev YA. A novel lipopeptide, an inhibitor of bacterial adhesion, from the thermophilic and halotolerant subsurface Bacillus licheniformis strain 603. Biochim Biophys Acta Mol Cell Biol Lipids 2004; 1634:107-15. [PMID: 14643798 DOI: 10.1016/j.bbalip.2003.09.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A new Bacillus licheniformis strain, 603, isolated from a mixture of drilling fluid and subsurface thermal water, has been found to produce a cyclic lipopeptide which is released into cultural medium as well as present in cells as the major lipid constituent (57% of the total cell lipids extractable with 2:1 chloroform-methanol). The quantitative ratio of the extracellular and intracellular lipopeptide has been estimated as 23:10. The metabolite represents a heptapeptide, L-Asp-->L-Leu-->L-Leu-->L-Val-->L-Val-->L-Glu-->L-Leu, N-acylated to the N-terminal amino acid, L-Asp, by a 3-hydroxy fatty acid (from 13:0 to 17:0 with n-, iso-, and anteiso-chains), the 3-OH group of which is esterified by the C-terminal amino acid, L-Leu. The chemical structure of the lipopeptide has been established by means of infrared (IR), 1H- and 13C-nuclear magnetic resonance (NMR) spectroscopy, electrospray ionisation (ESI) mass spectrometry (MS), including secondary ion mass spectrometry, along with chemical and enzymatic degradation. Although a diversity of similar metabolites synthesised by various B. licheniformis strains are presently known, such a structure has not been reported thus far. Added to the growth medium of strain 603 at the concentration of 1.6 microg/ml, the lipopeptide prevents adhesion of cells to a glass surface. Also, it exhibits a considerable growth-inhibiting activity against Corynebacterium variabilis and a much lower activity against Acinetobacter sp.
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Affiliation(s)
- Stanislav G Batrakov
- Russian Research Centre Hydrobios of Ministry of Health, ul. Kosmonavtov 18, korp. 2, Moscow 129301, Russia
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37
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38
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Carrillo C, Teruel JA, Aranda FJ, Ortiz A. Molecular mechanism of membrane permeabilization by the peptide antibiotic surfactin. BIOCHIMICA ET BIOPHYSICA ACTA 2003; 1611:91-7. [PMID: 12659949 DOI: 10.1016/s0005-2736(03)00029-4] [Citation(s) in RCA: 214] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Surfactin, an acidic lipopeptide produced by various strains of Bacillus subtilis, behaves as a very powerful biosurfactant and possesses several other interesting biological activities. This work deals with the molecular mechanism of membrane permeabilization by incorporation of surfactin. The surfactin-induced vesicle contents leakage was monitored by following release of carboxyfluorescein entrapped into unilamellar vesicles made of palmitoyloleoylphosphatidylcholine (POPC). The effect of the addition of cholesterol, dipalmitoylphosphatidylcholine (DPPC) and palmitoyloleoylphosphatidylethanolamine (POPE) was also checked. It was observed that surfactin was able to induce content leakage at concentrations far below the onset surfactin/lipid ratio for membrane solubilization to occur, which in our system was around 0.92. Electron microscopy showed that vesicles were present after addition of surfactin at a ratio below this value, whereas no vesicles could be observed at ratios above it. Cholesterol and POPE attenuated the membrane-perturbing effect of surfactin, whereas the effect of DPPC was to promote surfactin-induced leakage, indicating that bilayer sensitivity to surfactin increases with the lipid tendency to form lamellar phases, which is in agreement with our previous observation that surfactin destabilizes the inverted-hexagonal structure. Fourier-transform infrared spectroscopy (FTIR) was used to specifically follow the effect of surfactin on different parts of the phospholipid bilayer. The effect on the C=O stretching mode of vibration of POPC indicated a strong dehydration induced by surfactin. On the other hand, the C-H stretching bands showed that the lipopeptide interacts with the phospholipid acyl chains, resulting in considerable membrane fluidization. The reported effects could be useful to explain surfactin-induced 'pore' formation underlying the antibiotic and other important biological actions of this bacterial lipopeptide.
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Affiliation(s)
- Carmen Carrillo
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Universidad de Murcia, Campus de Espinardo/Apdo 4021, E-30100, Murcia, Spain
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Kikuchi T, Hasumi K. Enhancement of plasminogen activation by surfactin C: augmentation of fibrinolysis in vitro and in vivo. BIOCHIMICA ET BIOPHYSICA ACTA 2002; 1596:234-45. [PMID: 12007605 DOI: 10.1016/s0167-4838(02)00221-2] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reciprocal activation of plasminogen and prourokinase (pro-u-PA) is an important mechanism in the initiation and propagation of local fibrinolytic activity. We have found that a bacterial lipopeptide compound, surfactin C (3-20 microM), enhances the activation of pro-u-PA in the presence of plasminogen. This effect accompanied increased conversions of both pro-u-PA and plasminogen to their two-chain forms. Surfactin C also elevated the rate of plasminogen activation by two-chain urokinase (tcu-PA) while not affecting plasmin-catalyzed pro-u-PA activation and amidolytic activities of tcu-PA and plasmin. The intrinsic fluorescence of plasminogen was increased, and molecular elution time of plasminogen in size-exclusion chromatography was shortened in the presence of surfactin C. These results suggested that surfactin C induced a relaxation of plasminogen conformation, thus leading to enhancement of u-PA-catalyzed plasminogen activation, which in turn caused feedback pro-u-PA activation. Surfactin C was active in enhancing [125I]fibrin degradation both by pro-u-PA/plasminogen and tcu-PA/plasminogen systems. In a rat pulmonary embolism model, surfactin C (1 mg/kg, i.v.) elevated 125I plasma clot lysis when injected in combination with pro-u-PA. The present results provide first evidence that pharmacological relaxation of plasminogen conformation leads to enhanced fibrinolysis in vivo.
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Affiliation(s)
- Tadashi Kikuchi
- Department of Applied Biological Science, Tokyo Noko University, 3-5-8 Saiwaicho, Fuchu, 183-8509, Tokyo, Japan
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Interfacial and emulsifying properties of lipopeptides from Bacillus subtilis. Colloids Surf A Physicochem Eng Asp 1999. [DOI: 10.1016/s0927-7757(98)00627-x] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Grau A, Gómez Fernández JC, Peypoux F, Ortiz A. A study on the interactions of surfactin with phospholipid vesicles. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1418:307-19. [PMID: 10320682 DOI: 10.1016/s0005-2736(99)00039-5] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Surfactin, an acidic lipopeptide produced by various strains of Bacillus subtilis, behaves as a very powerful biosurfactant and posses several other interesting biological activities. By means of differential scanning calorimetry and X-ray diffraction the effect of surfactin on the phase transition properties of bilayers composed of different phospholipids, including lipids forming hexagonal-HII phases, has been studied. The interactions of surfactin with phosphatidylcholine and phosphatidylglycerol seem to be optimal in the case of myristoyl acyl chains, which have a similar length to the surfactin hydrocarbon tail. Data are shown that support formation of complexes of surfactin with phospholipids. The ionized form of surfactin seems to be more deeply inserted into negatively charged bilayers when Ca2+ is present, also supporting the formation of surfactin-Ca2+ complexes. In mixtures with dielaidoylphosphatidylethanolamine, a hexagonal-HII phase forming lipid, surfactin displays a bilayer stabilizing effect. Our results are compatible with the marked amphiphilic nature of surfactin and may contribute to explain some of its interesting biological actions; for instance the formation of ion-conducting pores in membranes.
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Affiliation(s)
- A Grau
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Veterinaria, Universidad de Murcia, E-30100 Espinardo, Murcia, Spain
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Prokof'eva NG, Kalinovskaya NI, Luk'yanov PA, Shentsova EB, Kuznetsova TA. The membranotropic activity of cyclic acyldepsipeptides from bacterium Bacillus pumilus, associated with the marine sponge Ircinia sp. Toxicon 1999; 37:801-13. [PMID: 10219990 DOI: 10.1016/s0041-0101(98)00219-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The isolate of Bacillus pumilus associated with the marine sponge Ircinia sp. produced the surfactin-like lipopeptides, cyclic acyldepsipeptides. The hemolytic activity of individual cyclic acyldepsipeptides, bacircines (BI) 2, 3, 4, 5 and 5A having different acyl side chain structures (anteiso-C13, iso-C14, normal-C14, anteiso-C15, and iso-C15, respectively) was studied. The hemolytic power of bacircines depended on both the structure of the side chain (n->iso->anteiso-) and pH values (5.6 and 6.5 > 7.4). Hemolytic potency as a function of BI 5 concentration was given for pH 6.5; 7.4; 8.0; 9.0. pH dependent hemolysis induced by BI 5 was shown to be reversible. The membrane damaging potential of bacircine 5 (5 microM) at pH 6.5 was characterized by a higher rate of hemolysis and by a shorter time between the introduction of BI 5 solution into the RBC samples and the onset of hemolysis. Under this condition, BI 5 decreased abnormally the microviscosity of erythrocyte ghosts bilayer. The damaging potency of BI 5 decreased with an increase pH from 6.5 to 7.4 or its decrease from 6.5 to 4.9. It was shown that fatty acid bacircine fragment penetrated into the lipid bilayer to a depth of minimum 7 carbon atoms. Constants of dissociation of the Asp (pK 4.75) and Glu (pK 6.65) residues of bacircine in the lipid bilayer were obtained. These results showed that at pH 6.5 BI 5 possessed membranotropic activity in the monoionic form.
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Affiliation(s)
- N G Prokof'eva
- Pacific Institute of Bioorganic Chemistry of Far Eastern Branch of the Russian Academy of Sciences, Vladivostok.
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Osman M, Høiland H, Holmsen H, Ishigami Y. Tuning micelles of a bioactive heptapeptide biosurfactant via extrinsically induced conformational transition of surfactin assembly. J Pept Sci 1998; 4:449-58. [PMID: 9851372 DOI: 10.1002/(sici)1099-1387(199811)4:7<449::aid-psc164>3.0.co;2-#] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We have studied the effects of extrinsic environmental conditions on the conformation of surfactin, a heptapeptide biosurfactant from Bacillus subtilis, in aqueous solutions. It has been made clear that temperature, pH, Ca2+ ions and the synthetic nonionic surfactant hepta-ethylene glycol (C12E7) affect the conformation of surfactin in aqueous solutions. The beta-sheet formation reached a maximum at 40 degrees C both in presence and absence of (C12E7) and the nonionic surfactant enhances the beta-sheet formation even at 25 degrees C. Ca2 + induced the formation of alpha-helices and caused this transition at 0.3 mM with surfactin monomers or at 0.5 mM with surfactin micelles, but above these transition concentrations of Ca2+ beta-sheets were observed. In micellar solution the beta-sheet structure was stabilized at pH values below 7 or upon addition of Ca2+ in concentrations above 0.5 mM. Our results indicated that the bioactive conformation of surfactin is most likely the beta-sheets when the molecules are assembled in micelles. The beta-sheet structure in micelles could be retained by tuning the micelles. Surfactin micelles could be tuned in the bioactive conformation by manipulating pH, temperature, Ca2+ or (C12E7) concentrations in surfactin solutions. Our results strongly indicated that Ca2+ and other molecules (such as C12E7) may function as directing templates in the assembly and conformation of surfactin in micelles. Thus, we suggest environmental manipulation and template-aided micellation (TAM) as a new approach for preparing predesigned micelles, microemulsions or micro-spheres for specific application purposes.
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Affiliation(s)
- M Osman
- School of Science and Technology (HIS), Ullandhaug, Stavanger, Norway
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Kowall M, Vater J, Kluge B, Stein T, Franke P, Ziessow D. Separation and Characterization of Surfactin Isoforms Produced by Bacillus subtilis OKB 105. J Colloid Interface Sci 1998; 204:1-8. [PMID: 9665760 DOI: 10.1006/jcis.1998.5558] [Citation(s) in RCA: 147] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Natural surfactin is a mixture of cyclic lipopeptides built from variants of a heptapeptide and a beta-hydroxy fatty acid with chain lengths of 13-15 carbon atoms. The lipopeptide biosurfactant was produced by Bacillus subtilis OKB 105 and part of the material subjected to esterification of its Glu and Asp residues. High-resolution preparative reversed phase HPLC on EnCaPharm 100 of surfactin and its monomethyl and dimethyl esters yielded 44 fractions which were characterized by NMR and MS methods. Among the separated isoforms are the known surfactin variants with l-Leu, l-Val, or l-Ile in position 7 of the peptide ring and three hitherto unknown variants showing replacements of the leucine residues in position 2 and/or 7 by l-Val and l-Ile. Our work makes available lipoheptapeptide compounds with modified structures and different hydrophobicities which promise to have potential for biotechnological and pharmaceutical applications. Copyright 1998 Academic Press.
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Affiliation(s)
- M Kowall
- Iwan N. Stranski Institut für Physikalische und Theoretische Chemie, Technische Universität Berlin, Strasse des 17. Juni 112, Berlin, D-10623, Germany
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Osman M, Høiland H, Holmsen H. Micropolarity and microviscosity in the micelles of the heptapeptide biosurfactant “surfactin”. Colloids Surf B Biointerfaces 1998. [DOI: 10.1016/s0927-7765(98)00031-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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von Döhren H, Keller U, Vater J, Zocher R. Multifunctional Peptide Synthetases. Chem Rev 1997; 97:2675-2706. [PMID: 11851477 DOI: 10.1021/cr9600262] [Citation(s) in RCA: 190] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hans von Döhren
- Section Biochemistry and Molecular Biology, Max-Volmer-Institute of Biophysical Chemistry and Biochemistry, Technical University Berlin, Franklinstrasse 29, D-10587 Berlin, Germany
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Grangemard I, Peypoux F, Wallach J, Das BC, Labbé H, Caille A, Genest M, Maget-Dana R, Ptak M, Bonmatin JM. Lipopeptides with improved properties: structure by NMR, purification by HPLC and structure-activity relationships of new isoleucyl-rich surfactins. J Pept Sci 1997; 3:145-54. [PMID: 9230480 DOI: 10.1002/(sici)1099-1387(199703)3:2<145::aid-psc96>3.0.co;2-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The biosynthesis of bacterial isoleucyl-rich surfactins was controlled by supplementation of L-isoleucine to the culture medium. Two new variants, the [Ile4,7]- and [Ile2,4,7]surfactins, were thus produced by Bacillus subtilis and their separation was achieved by reverse-phase HPLC. Amino acids of the heptapeptide moiety were analysed by chemical methods, and the lipid moiety was identified by beta-hydroxy anteiso pentadecanoic acid by combined GC/MS. Sequences were established on the basis of two-dimensional NMR data. Because conformational parameters issuing from NMR spectra suggested that the cyclic backbone fold was globally conserved in the new variants, structure-activity relationships were discussed in details on the basis of the three-dimensional model of surfactin in solution. Indeed, both variants have increased surface properties compared with that of surfactin, and this improvement is assigned to an increase of the hydrophobicity of the apolar domain favouring micellization. Furthermore, the additional Leu-to-Ile substitution at position 2 in the [Ile2,4,7]surfactin leads to a substantial increase of its affinity for calcium, when compared with that of [Ile4,7]surfactin or surfactin. This effect is assigned, from the model, to an increase in the accessibility of the acidic side chains constituting the calcium binding site. Thus, the propensities of such active lipopeptides for both hydrophobic and electrostatic interactions were improved, further substantiating that they can be rationally designed.
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Affiliation(s)
- I Grangemard
- Laboratoire de Biochimie Analytique et Synthèse Bioorganique, Université Claude Bernard Lyon, France
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Razafindralambo H, Paquot M, Baniel A, Popineau Y, Hbid C, Jacques P, Thonart P. Foaming properties of a natural cyclic lipoheptapeptide belonging to a special class of amphiphilic molecules. Food Hydrocoll 1997. [DOI: 10.1016/s0268-005x(97)80011-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Bonmatin JM, Labb� H, Grangemard I, Peypoux F, Maget-Dana R, Ptak M, Michel G. Production, isolation and characterization of [Leu4]- and [Ile4]surfactins from Bacillus subtilis. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf00122922] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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