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Apostolidis E, Stoforos GN, Mandala I. Starch physical treatment, emulsion formation, stability, and their applications. Carbohydr Polym 2023; 305:120554. [PMID: 36737219 DOI: 10.1016/j.carbpol.2023.120554] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/18/2022] [Accepted: 01/03/2023] [Indexed: 01/07/2023]
Abstract
Pickering emulsions are increasingly preferred over typical surfactant-based emulsions due to several advantages, such as lower emulsifier usage, simplicity, biocompatibility, and safety. These types of emulsions are stabilized using solid particles, which produce a thick layer at the oil-water interface preventing droplets from aggregating. Starch nano-particles (SNPs) have received considerable attention as natural alternatives to synthetic stabilizers due to their unique properties. Physical formulation processes are currently preferred for SNP production since they are environmentally friendly procedures that do not require the use of chemical reagents. This review provides a thorough overview in a critical perspective of the physical processes to produce starch nano-particles used as Pickering emulsion stabilizers, fabricated by a 2-step process. Specifically, the reviewed physical approaches for nano-starch preparation include high hydrostatic pressure, high pressure homogenization, ultrasonication, milling and antisolvent precipitation. All the essential parameters used to evaluate the effectiveness of particles in stabilizing these systems are also presented in detail, including the hydrophobicity, size, and content of starch particles. Finally, this review provides the basis for future research focusing on physical nano-starch production, to ensure the widespread use of these natural stabilizers in the ever-evolving field of food technology.
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Affiliation(s)
- Eftychios Apostolidis
- Agricultural University of Athens, Dept. Food Science & Human Nutrition, Laboratory of Food Process Engineering, Iera Odos 75, 11855 Votanikos, Athens, Greece
| | - George N Stoforos
- Agricultural University of Athens, Dept. Food Science & Human Nutrition, Laboratory of Food Process Engineering, Iera Odos 75, 11855 Votanikos, Athens, Greece
| | - Ioanna Mandala
- Agricultural University of Athens, Dept. Food Science & Human Nutrition, Laboratory of Food Process Engineering, Iera Odos 75, 11855 Votanikos, Athens, Greece.
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2
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Biosurfactants produced by Pseudomonas syringae pv tabaci: A versatile mixture with interesting emulsifying properties. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Abed RMM, Shanti M, Muthukrishnan T, Al-Riyami Z, Pracejus B, Moraetis D. The Role of Microbial Mats in the Removal of Hexavalent Chromium and Associated Shifts in Their Bacterial Community Composition. Front Microbiol 2020; 11:12. [PMID: 32082277 PMCID: PMC7001535 DOI: 10.3389/fmicb.2020.00012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 01/06/2020] [Indexed: 11/17/2022] Open
Abstract
Microbial mats are rarely reported for chromium-polluted ecosystems, hence information on their bacterial diversity and role in chromium removal are very scarce. We investigated the role of nine microbial mats, collected from three quarry sumps of chromium mining sites, in the removal of hexavalent chromium [Cr(VI)]. Bacterial diversity in these mats and community shifts after incubation with Cr(VI) have been investigated using MiSeq sequencing. In nature, a chromium content of 1,911 ± 100 mg kg–1 was measured in the microbial mats, constituting the third highest source of environmentally available chromium. The mats were able to remove 1 mg l–1 of Cr(VI) in 7 days under aerobic conditions. MiSeq sequencing of the original mats yielded 46–99% of the sequences affiliated to Proteobacteria, Firmicutes and Actinobacteria. When the mats were incubated with Cr(VI), the bacterial community shifted in the favor of Alphaproteobacteria and Verrucomicrobiae. We conclude that microbial mats in the quarry sumps harbor diverse microorganisms with the ability to remove toxic Cr(VI), hence these mats can be potentially used to remove chromium from polluted waters.
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Affiliation(s)
- Raeid M M Abed
- Department of Biology, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Mary Shanti
- Department of Biology, College of Science, Sultan Qaboos University, Muscat, Oman
| | | | - Zayana Al-Riyami
- Department of Biology, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Bernhard Pracejus
- Earth Science Department, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Daniel Moraetis
- Department of Applied Physics and Astronomy, College of Sciences, University of Sharjah, Sharjah, United Arab Emirates
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4
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Production of a new lipoprotein biosurfactant by Streptomyces sp. DPUA1566 isolated from lichens collected in the Brazilian Amazon using agroindustry wastes. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2018.10.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Lamilla C, Braga D, Castro R, Guimarães C, V. A. de Castilho L, Freire DMG, Barrientos L. Streptomyces luridus So3.2 from Antarctic soil as a novel producer of compounds with bioemulsification potential. PLoS One 2018; 13:e0196054. [PMID: 29684071 PMCID: PMC5912782 DOI: 10.1371/journal.pone.0196054] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 04/05/2018] [Indexed: 11/18/2022] Open
Abstract
The present study aimed to identify novel microbial producers of bioemulsificant compounds from Antarctic soils. Fifty-nine microbial strains were isolated from five different locations at South Shetland Islands, Antarctica, and screened for biosurfactant production by β-hemolytic activity. Strain So 3.2 was determined as bioemulsifier-producer and identified by phenotypic and molecular characterization as Streptomyces luridus. Emulsification activity, oil displacement method and drop-collapsing test were performed to evaluate the biosurfactant activity with different oils and hydrocarbons using two different culture media (Luria Bertani and Bushnell Haas in the presence of different carbon sources: glucose, glycerol, olive oil and n-Hexadecane). Cell free supernatant of Bushnell Haas culture supplemented with n-Hexadecane showed the best results for all tests. Emulsification of hydrocarbons exceeded 60%, reaching up to 90% on oil with high API grade, while displacement tests ranged from 8 cm to 4 cm in diameter according the culture media and tested oils. Our results revealed that Streptomyces luridus So3.2 is able to produce bioemulsifiers capable of emulsifying hydrocarbons and oils, which could be used in different biotechnological applications, particularly for bioremediation of environments contaminated by oil leaks.
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Affiliation(s)
- Claudio Lamilla
- Laboratory of Applied Molecular Biology, Center of Excellence in Translational Medicine, Temuco, Chile
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Douglas Braga
- Laboratório de Biotecnologia Microbiana, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, Centro de Tecnologia, Cidade Universitária, Rio de Janeiro RJ, Brasil
| | - Rui Castro
- Laboratório de Biotecnologia Microbiana, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, Centro de Tecnologia, Cidade Universitária, Rio de Janeiro RJ, Brasil
| | - Carolina Guimarães
- Laboratório de Biotecnologia Microbiana, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, Centro de Tecnologia, Cidade Universitária, Rio de Janeiro RJ, Brasil
| | - Livia V. A. de Castilho
- Laboratório de Biotecnologia Microbiana, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, Centro de Tecnologia, Cidade Universitária, Rio de Janeiro RJ, Brasil
| | - Denise M. G. Freire
- Laboratório de Biotecnologia Microbiana, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, Centro de Tecnologia, Cidade Universitária, Rio de Janeiro RJ, Brasil
- * E-mail: (LB); (DMGF)
| | - Leticia Barrientos
- Laboratory of Applied Molecular Biology, Center of Excellence in Translational Medicine, Temuco, Chile
- Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
- * E-mail: (LB); (DMGF)
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Djurić A, Gojgić-Cvijović G, Jakovljević D, Kekez B, Kojić JS, Mattinen ML, Harju IE, Vrvić MM, Beškoski VP. Brachybacterium sp. CH-KOV3 isolated from an oil-polluted environment-a new producer of levan. Int J Biol Macromol 2017; 104:311-321. [PMID: 28602989 DOI: 10.1016/j.ijbiomac.2017.06.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/28/2017] [Accepted: 06/06/2017] [Indexed: 10/19/2022]
Abstract
Various microorganisms isolated from polluted environments, such as Pseudomonas sp. and Micrococcus sp. can synthesize exopolysaccharides (EPSs) which are natural, non-toxic and biodegradable polymers. EPSs play a key role in protection of microbial cells under various external influences. For humans, these substances have potential use in many industries. EPSs can be applied as a flavor or a fragrance carrier, an emulsifier, a stabilizer, a prebiotic, an antioxidant or an antitumor agent. In this study, we characterized an environmental microorganism that produces EPS, optimized EPS production by this strain and characterized the EPS produced. Isolate CH-KOV3 was identified as Brachybacterium paraconglomeratum. The sucrose level in the growth medium greatly influenced EPS production, and the highest yield was when the microorganism was incubated in media with 500g/L of sucrose. The optimal temperature and pH were 28°C and 7.0, respectively. The nuclear magnetic resonance (NMR) results and GC-MS analysis confirmed that the residues were d-fructofuranosyl residues with β-configuration, where fructose units are linked by β-2,6-glycosidic bonds, with β-2,1-linked branches. All these data indicate that the investigated EPS is a levan-type polysaccharide. Thus, it was concluded that Brachybacterium sp. CH-KOV3 could constitute a new source for production of the bioactive polysaccharide, levan.
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Affiliation(s)
- Aleksandra Djurić
- University of Belgrade, Faculty of Chemistry, Studentski trg 12-16 P.O. Box 158, 11001, Belgrade, Serbia; University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, 11001 Belgrade, Njegoševa 12, Serbia.
| | - Gordana Gojgić-Cvijović
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, 11001 Belgrade, Njegoševa 12, Serbia
| | - Dragica Jakovljević
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, 11001 Belgrade, Njegoševa 12, Serbia
| | - Branka Kekez
- University of Belgrade, Faculty of Chemistry, Studentski trg 12-16 P.O. Box 158, 11001, Belgrade, Serbia
| | - Jovana Stefanović Kojić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, 11001 Belgrade, Njegoševa 12, Serbia
| | - Maija-Liisa Mattinen
- Aalto University, School of Chemical Technology, Department of Forest Products Technology Bioproduct Chemistry, PO Box 16300, FI-00076, Aalto, Finland
| | - Inka Elina Harju
- Clinical Microbiology Laboratory, Turku University Hospital, Finland
| | - Miroslav M Vrvić
- University of Belgrade, Faculty of Chemistry, Studentski trg 12-16 P.O. Box 158, 11001, Belgrade, Serbia; University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, 11001 Belgrade, Njegoševa 12, Serbia
| | - Vladimir P Beškoski
- University of Belgrade, Faculty of Chemistry, Studentski trg 12-16 P.O. Box 158, 11001, Belgrade, Serbia
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Alvarez A, Saez JM, Davila Costa JS, Colin VL, Fuentes MS, Cuozzo SA, Benimeli CS, Polti MA, Amoroso MJ. Actinobacteria: Current research and perspectives for bioremediation of pesticides and heavy metals. CHEMOSPHERE 2017; 166:41-62. [PMID: 27684437 DOI: 10.1016/j.chemosphere.2016.09.070] [Citation(s) in RCA: 267] [Impact Index Per Article: 38.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 09/15/2016] [Accepted: 09/16/2016] [Indexed: 05/03/2023]
Abstract
Actinobacteria exhibit cosmopolitan distribution since their members are widely distributed in aquatic and terrestrial ecosystems. In the environment they play relevant ecological roles including recycling of substances, degradation of complex polymers, and production of bioactive molecules. Biotechnological potential of actinobacteria in the environment was demonstrated by their ability to remove organic and inorganic pollutants. This ability is the reason why actinobacteria have received special attention as candidates for bioremediation, which has gained importance because of the widespread release of contaminants into the environment. Among organic contaminants, pesticides are widely used for pest control, although the negative impact of these chemicals in the environmental balance is increasingly becoming apparent. Similarly, the extensive application of heavy metals in industrial processes lead to highly contaminated areas worldwide. Several studies focused in the use of actinobacteria for cleaning up the environment were performed in the last 15 years. Strategies such as bioaugmentation, biostimulation, cell immobilization, production of biosurfactants, design of defined mixed cultures and the use of plant-microbe systems were developed to enhance the capabilities of actinobacteria in bioremediation. In this review, we compiled and discussed works focused in the study of different bioremediation strategies using actinobacteria and how they contributed to the improvement of the already existing strategies. In addition, we discuss the importance of omic studies to elucidate mechanisms and regulations that bacteria use to cope with pollutant toxicity, since they are still little known in actinobacteria. A brief account of sources and harmful effects of pesticides and heavy metals is also given.
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Affiliation(s)
- Analia Alvarez
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina; Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán (UNT), Miguel Lillo 205, Tucumán 4000, Argentina.
| | - Juliana Maria Saez
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina.
| | - José Sebastian Davila Costa
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina.
| | - Veronica Leticia Colin
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina.
| | - María Soledad Fuentes
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina.
| | - Sergio Antonio Cuozzo
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina; Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán (UNT), Miguel Lillo 205, Tucumán 4000, Argentina.
| | - Claudia Susana Benimeli
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina.
| | - Marta Alejandra Polti
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina; Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán (UNT), Miguel Lillo 205, Tucumán 4000, Argentina.
| | - María Julia Amoroso
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán 4000, Argentina.
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Cai Q, Zhang B, Chen B, Zhu Z, Zhao Y. A novel bioemulsifier produced by Exiguobacterium sp. strain N4-1P isolated from petroleum hydrocarbon contaminated coastal sediment. RSC Adv 2017. [DOI: 10.1039/c7ra07411e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study,ExiguobacteriumN4-1P is reported as a bioemulsifier producer for the first time.
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Affiliation(s)
- Qinhong Cai
- Faculty of Engineering and Applied Science
- Memorial University of Newfoundland
- St. John's
- Canada A1B 3X5
| | - Baiyu Zhang
- Faculty of Engineering and Applied Science
- Memorial University of Newfoundland
- St. John's
- Canada A1B 3X5
| | - Bing Chen
- Faculty of Engineering and Applied Science
- Memorial University of Newfoundland
- St. John's
- Canada A1B 3X5
| | - Zhiwen Zhu
- Faculty of Engineering and Applied Science
- Memorial University of Newfoundland
- St. John's
- Canada A1B 3X5
| | - Yuming Zhao
- Department of Chemistry
- Memorial University of Newfoundland
- St. John's
- Canada A1B 3X5
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Colin VL, Cortes ÁAJ, Aparicio JD, Amoroso MJ. Potential application of a bioemulsifier-producing actinobacterium for treatment of vinasse. CHEMOSPHERE 2016; 144:842-7. [PMID: 26421623 DOI: 10.1016/j.chemosphere.2015.09.064] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 08/31/2015] [Accepted: 09/15/2015] [Indexed: 06/05/2023]
Abstract
Vinasse is a complex effluent created during production of ethyl alcohol, which can present serious pollution hazard in areas where it is discharged. A variety of technologies, many based upon recovery of the effluent via microbial pathways, are continually being evaluated in order to mitigate the pollution potential of vinasse. The present work reports on initial advances related to the effectiveness of the actinobacterium Streptomyces sp. MC1 for vinasse treatment. Alternative use of raw vinasse as a substrate for producing metabolites of biotechnological interest such as bioemulsifiers, was also evaluated. The strain was able to grow at very high vinasse concentrations (until 50% v/v) and remove over 50% of the biodegradable organic matter in a time period as short as 4 d. Potentially toxic metals such as Mn, Fe, Zn, As, and Pb were also effectively removed during bacterial growth. Decrease in the pollution potential of treated vinasse compared to raw effluent, was reflected in a significant increase in the vigour index of Lactuca sativa (letucce) used as bioremediation indicator. Finally, significant bioemulsifier production was detected when this strain was incubated in a vinasse-based culture medium. These results represent the first advances on the recovery and re-valuation of an actual effluent, by using an actinobacterium from our collection of cultures.
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Affiliation(s)
- Verónica L Colin
- Planta Piloto de Procesos Industriales y Microbiológicos (PROIMI), CONICET, Av. Belgrano y Pje. Caseros, 4000, Tucumán, Argentina; Universidad de San Pablo-Tucumán, Argentina.
| | - Álvaro A Juárez Cortes
- Planta Piloto de Procesos Industriales y Microbiológicos (PROIMI), CONICET, Av. Belgrano y Pje. Caseros, 4000, Tucumán, Argentina
| | - Juan D Aparicio
- Planta Piloto de Procesos Industriales y Microbiológicos (PROIMI), CONICET, Av. Belgrano y Pje. Caseros, 4000, Tucumán, Argentina
| | - María J Amoroso
- Planta Piloto de Procesos Industriales y Microbiológicos (PROIMI), CONICET, Av. Belgrano y Pje. Caseros, 4000, Tucumán, Argentina; Facultad de Ciencias de la Salud, Universidad del Norte Santo Tomás de Aquino-Tucumán, Argentina; Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, 4000, Tucumán, Argentina
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Fuentes MS, Colin VL, Amoroso MJ, Benimeli CS. Selection of an actinobacteria mixed culture for chlordane remediation. Pesticide effects on microbial morphology and bioemulsifier production. J Basic Microbiol 2015; 56:127-37. [DOI: 10.1002/jobm.201500514] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 10/09/2015] [Indexed: 11/10/2022]
Affiliation(s)
- María S. Fuentes
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET); Avenida Belgrano y Pasaje Caseros; Tucumán Argentina
| | - Verónica L. Colin
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET); Avenida Belgrano y Pasaje Caseros; Tucumán Argentina
- Universidad de San Pablo-Tucumán; Argentina
| | - María J. Amoroso
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET); Avenida Belgrano y Pasaje Caseros; Tucumán Argentina
- Universidad del Norte Santo Tomás de Aquino; Tucumán Argentina
- Facultad de Bioquímica; Química y Farmacia; Universidad Nacional de Tucumán; Tucumán Argentina
| | - Claudia S. Benimeli
- Universidad del Norte Santo Tomás de Aquino; Tucumán Argentina
- Unidad de Administración Territorial; Centro Científico Tecnológico; CONICET-Tucumán; Tucumán Argentina
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Gudiña EJ, Pereira JFB, Costa R, Evtuguin DV, Coutinho JAP, Teixeira JA, Rodrigues LR. Novel bioemulsifier produced by a Paenibacillus strain isolated from crude oil. Microb Cell Fact 2015; 14:14. [PMID: 25636532 PMCID: PMC4318442 DOI: 10.1186/s12934-015-0197-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 01/19/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Surface active compounds produced by microorganisms are attracting a pronounced interest due to their potential advantages over their synthetic counterparts, and to the fact that they could replace some of the synthetics in many environmental and industrial applications. RESULTS Bioemulsifier production by a Paenibacillus sp. strain isolated from crude oil was studied. The bioemulsifier was produced using sucrose with and without adding hydrocarbons (paraffin or crude oil) under aerobic and anaerobic conditions at 40°C. It formed stable emulsions with several hydrocarbons and its emulsifying ability was not affected by exposure to high salinities (up to 300 g/l), high temperatures (100°C-121°C) or a wide range of pH values (2-13). In addition, it presented low toxicity and high biodegradability when compared with chemical surfactants. A preliminary chemical characterization by Fourier Transform Infrared Spectroscopy (FT-IR), proton and carbon nuclear magnetic resonance (1H NMR and 13C CP-MAS NMR) and size exclusion chromatography indicated that the bioemulsifier is a low molecular weight oligosaccharide-lipid complex. CONCLUSION The production of a low molecular weight bioemulsifier by a novel Paenibacillus strain isolated from crude oil was reported. To the best of our knowledge, bioemulsifier production by Paenibacillus strains has not been previously reported. The features of this novel bioemulsifier make it an interesting biotechnological product for many environmental and industrial applications. Graphical Abstract Novel bioemulsifier from Paenibacillus sp.
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Affiliation(s)
- Eduardo J Gudiña
- CEB - Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal.
| | - Jorge F B Pereira
- CICECO - Chemistry Department, University of Aveiro, 3830-103, Aveiro, Portugal.
| | - Rita Costa
- CICECO - Chemistry Department, University of Aveiro, 3830-103, Aveiro, Portugal.
| | - Dmitry V Evtuguin
- CICECO - Chemistry Department, University of Aveiro, 3830-103, Aveiro, Portugal.
| | - João A P Coutinho
- CICECO - Chemistry Department, University of Aveiro, 3830-103, Aveiro, Portugal.
| | - José A Teixeira
- CEB - Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal.
| | - Lígia R Rodrigues
- CEB - Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal.
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Dávila Costa JS, Amoroso MJ. Current biotechnological applications of the genus Amycolatopsis. World J Microbiol Biotechnol 2014; 30:1919-26. [PMID: 24557749 DOI: 10.1007/s11274-014-1622-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 02/08/2014] [Indexed: 01/07/2023]
Abstract
Recently there has been increasing interest in possible biotechnological applications of the bacterial genus Amycolatopsis. This genus originally attracted attention for its antibiotic producing capabilities; although it is actually a multifaceted genus and a more diverse range of studies involving biotechnological processes have now been undertaken. Several works have demonstrated that the versatility shown by these bacteria is valuable in industrial applications. Here, we provide a condensed overview of the most important biotechnological applications such as bioremediation, biodegradation and bioconversion, as well as aspects that need to be explored further in order to gain a fuller insight into this genus, including its possible potential in the production of biofuel. Antibiotic production is not discussed since this is well covered by the latest edition of Bergey's Manual of Systematic Bacteriology. To our knowledge this is the first report highlighting the versatility and biotechnological potential of the genus Amycolatopsis.
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Affiliation(s)
- José Sebastián Dávila Costa
- Regional Center of Research and Scientific-Technological Development (CRIDECIT), National University of Patagonia San Juan Bosco, km 4-Ciudad Universitaria, 9000, Comodoro Rivadavia, Chubut, Argentina,
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13
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Colin VL, Castro MF, Amoroso MJ, Villegas LB. Production of bioemulsifiers by Amycolatopsis tucumanensis DSM 45259 and their potential application in remediation technologies for soils contaminated with hexavalent chromium. JOURNAL OF HAZARDOUS MATERIALS 2013; 261:577-583. [PMID: 23994656 DOI: 10.1016/j.jhazmat.2013.08.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 07/22/2013] [Accepted: 08/01/2013] [Indexed: 06/02/2023]
Abstract
In recent years, increasing interest has been shown in the use of bioemulsifiers as washing agents that can enhance desorption of soil-bound metals. However, high production costs derived from the use of expensive substrates for formulation of the fermentation media represent the main challenge for full, large-scale implementation of bioemulsifiers. This work reports on a first study of bioemulsifier production by the actinobacterium Amycolatopsis tucumanensis DSM 45259 using different carbon and nitrogen sources. Preliminary results on the potential use of these compounds as washing agents for soils contaminated with Cu(II) and Cr(VI) are also presented. The best specific production was detected using glycerol and urea as carbon and nitrogen substrates, respectively. However, with all of the substrates used during the batch assay, the bioemulsifiers showed high levels of stability at extreme conditions of pH, temperature, and salt concentration. Under the current assay conditions, the bioemulsifiers were not effective in removing Cu(II) from soil. However, they were able to mediate Cr(VI) recovery, with the removal percentage doubled compared to that seen when using deionized water. These findings appear promising for the development of remediation technologies for hexavalent chromium compounds based upon direct use of these microbial emulsifiers.
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Affiliation(s)
- Verónica Leticia Colin
- Planta Piloto de Procesos Industriales y Microbiológicos (PROIMI), CONICET, Av. Belgrano y Pje. Caseros, 4000 Tucumán, Argentina; Universidad de San Pablo-Tucumán, Argentina.
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