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Arkhipov VP, Arkhipov RV, Petrova EV, Filippov A. Micellar and solubilizing properties of rhamnolipids. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2023; 61:345-355. [PMID: 36840535 DOI: 10.1002/mrc.5337] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/18/2023] [Accepted: 02/22/2023] [Indexed: 05/11/2023]
Abstract
We studied the micellar and solubilizing properties of aqueous solutions of unfractionated rhamnolipids produced by Pseudomonas aeruginosa. We used nuclear magnetic resonance (NMR) diffusometry, dynamic light scattering, and conductometry to measure the critical micelle concentration (CMC) of rhamnolipid solutions and determined the effective hydrodynamic radii of rhamnolipid monomers and micelles. Based on selective measurements of the self-diffusion coefficients of molecules, performed by NMR diffusometry, the solubilizing properties of rhamnolipids were studied depending on their concentration in solution; aromatic hydrocarbons, benzene, toluene, ethylbenzene, and para-xylene were taken as solubilizates. On the basis of the measurement results, we estimated the distribution coefficient of the solubilizate between the micellar (solubilized) and free (in the aqueous phase) states and the solubilizing capacity of rhamnolipid micelles.
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Affiliation(s)
- Victor P Arkhipov
- Department of Physics, Kazan National Research Technological University, Kazan, 420015, Russian Federation
| | - Ruslan V Arkhipov
- Institute of Physics, Kazan Federal University, Kazan, 420008, Russian Federation
| | - Ekaterina V Petrova
- Department of Analytical Chemistry, Kazan National Research Technological University, Kazan, 420015, Russian Federation
| | - Andrei Filippov
- Chemistry of Interfaces, Luleå University of Technology, Luleå, SE-97187, Sweden
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Wang Z, Hu L, He J, Zhou G, Chen Z, Wang Z, Chen J, Hayat K, Hrynsphan D, Tatsiana S. Mechanisms of N, N-dimethylacetamide-facilitated n-hexane removal in a rotating drum biofilter packed with bamboo charcoal-polyurethane composite. BIORESOURCE TECHNOLOGY 2023; 372:128600. [PMID: 36634880 DOI: 10.1016/j.biortech.2023.128600] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/03/2023] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
n-Hexane and N, N-dimethylacetamide (DMAC) are two major volatile organic compounds (VOCs) discharged from the pharmaceutical industry. To enhance DMAC-facilitated n-hexane removal, we investigated the simultaneous removal of multiple pollutants in a rotating drum biofilter packed with bamboo charcoal-polyurethane composite. After adding 800 mg·L-1 DMAC, the n-hexane removal efficiency increased from 59.4 % to 83.1 % under the optimized conditions. The maximum elimination capacity of 10.0 g·m-3·h-1n-hexane and 157 g·m-3·h-1 DMAC were obtained. The biomass of bamboo charcoal-polyurethane and the ratio of protein-to-polysaccharide in extracellular polymeric substances were significantly increased compared with the non-DMAC stage, which is attributed to increased carbon utilization. In addition, Na+ K+-ATPase was positively correlated with increasing electron transport system activity, which was 1.98 and 1.36 times greater. Hydrophilic DMAC improved the bioavailability of hydrophobic n-hexane and benefited bacterial metabolism. Co-degradation of n-hexane and DMAC system can be used for other volatile organic pollutants.
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Affiliation(s)
- Zhaoyun Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Liyong Hu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jiamei He
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Gang Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhenghui Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zeyu Wang
- Key Laboratory of Pollution Exposure and Health Intervention Technology, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou 310021, China
| | - Jun Chen
- Key Laboratory of Pollution Exposure and Health Intervention Technology, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou 310021, China; College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310021, China.
| | - Kashif Hayat
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Dzmitry Hrynsphan
- Research Institute of Physical and Chemical Problems, Belarusian State University, Minsk 220030, Belarus
| | - Savitskaya Tatsiana
- Research Institute of Physical and Chemical Problems, Belarusian State University, Minsk 220030, Belarus
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Sánchez-Muñoz S, Balbino TR, de Oliveira F, Rocha TM, Barbosa FG, Vélez-Mercado MI, Marcelino PRF, Antunes FAF, Moraes EJC, dos Santos JC, da Silva SS. Surfactants, Biosurfactants, and Non-Catalytic Proteins as Key Molecules to Enhance Enzymatic Hydrolysis of Lignocellulosic Biomass. Molecules 2022; 27:8180. [PMID: 36500273 PMCID: PMC9739445 DOI: 10.3390/molecules27238180] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
Abstract
Lignocellulosic biomass (LCB) has remained a latent alternative resource to be the main substitute for oil and its derivatives in a biorefinery concept. However, its complex structure and the underdeveloped technologies for its large-scale processing keep it in a state of constant study trying to establish a consolidated process. In intensive processes, enzymes have been shown to be important molecules for the fractionation and conversion of LCB into biofuels and high-value-added molecules. However, operational challenges must be overcome before enzyme technology can be the main resource for obtaining second-generation sugars. The use of additives is shown to be a suitable strategy to improve the saccharification process. This review describes the mechanisms, roles, and effects of using additives, such as surfactants, biosurfactants, and non-catalytic proteins, separately and integrated into the enzymatic hydrolysis process of lignocellulosic biomass. In doing so, it provides a technical background in which operational biomass processing hurdles such as solids and enzymatic loadings, pretreatment burdens, and the unproductive adsorption phenomenon can be addressed.
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Affiliation(s)
- Salvador Sánchez-Muñoz
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Thércia R. Balbino
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Fernanda de Oliveira
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Thiago M. Rocha
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Fernanda G. Barbosa
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Martha I. Vélez-Mercado
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Paulo R. F. Marcelino
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Felipe A. F. Antunes
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Elisangela J. C. Moraes
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Julio C. dos Santos
- Biopolymers, Bioreactors, and Process Simulation Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
| | - Silvio S. da Silva
- Bioprocesses and Sustainable Products Laboratory, Department of Biotechnology, Engineering School of Lorena, University of São Paulo (EEL-USP), Lorena 12.602.810., Brazil
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Huo L, Liu G, Li Y, Yang X, Zhong H. Solubilization of residual dodecane by surfactants in porous media: The relation between surfactant partition and solubilization. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yang X, Liu G, Huo L, Dong H, Zhong H. Alkane solubilization by surfactants: Aggregate view and size analysis based on cryo-TEM. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dobler L, Oliveira RR. Automated Search For The Low-lying Energy Isomers of Rhamnolipids and Related Organometallic Complexes. Chemphyschem 2022; 23:e202200111. [PMID: 35588462 DOI: 10.1002/cphc.202200111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/19/2022] [Indexed: 11/10/2022]
Abstract
Rhamnolipids (RMLs) are a widely studied biosurfactant due to their high biodegradability and environmentally friendly pro duction. However, the knowledge of the structure-property relationship of RMLs is imperative for the design of highly efficient applications. Aiming to a better understanding of it at a molecular level, we performed an automated search for low energy structures of the most abundant RMLs, namely, Rha-C 10 , Rha-C 10 -C 10 , Rha-Rha-C 10 and Rha-Rha-C 10 -C 10 and their respective C 2 -congeners. Besides that, selected neutral metal complexes were also considered. We found that several low-energy congeners have internal hydrogen bonds. Moreover, geometries in "closed" conformation were always more stable than "open" ones. Fi nally, the energy differences between open and closed conformations of K + , Ni 2 + , Cu 2 + and Zn 2 + complexes were found to be 23.5 kcal mol -1 , 62.8 kcal mol -1 , 24.3 kcal mol -1 and 41.6 kcal mol -1 , respectively, indicating a huge structural reorganization after the complex formation.
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Affiliation(s)
- Leticia Dobler
- Universidade Federal do Rio de Janeiro, Chemistry Institute, BRAZIL
| | - Ricardo Rodrigues Oliveira
- Universidade Federal do Rio de Janeiro, Physical Chemistry, Av. Athos da Silveira Ramos, Technological Center, Block A, 304, University City, 21941-590, Rio de Janeiro, BRAZIL
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Bjerk TR, Severino P, Jain S, Marques C, Silva AM, Pashirova T, Souto EB. Biosurfactants: Properties and Applications in Drug Delivery, Biotechnology and Ecotoxicology. Bioengineering (Basel) 2021; 8:bioengineering8080115. [PMID: 34436118 PMCID: PMC8389267 DOI: 10.3390/bioengineering8080115] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 12/27/2022] Open
Abstract
Surfactants are amphiphilic compounds having hydrophilic and hydrophobic moieties in their structure. They can be of synthetic or of microbial origin, obtained respectively from chemical synthesis or from microorganisms’ activity. A new generation of ecofriendly surfactant molecules or biobased surfactants is increasingly growing, attributed to their versatility of applications. Surfactants can be used as drug delivery systems for a range of molecules given their capacity to create micelles which can promote the encapsulation of bioactives of pharmaceutical interest; besides, these assemblies can also show antimicrobial properties. The advantages of biosurfactants include their high biodegradability profile, low risk of toxicity, production from renewable sources, functionality under extreme pH and temperature conditions, and long-term physicochemical stability. The application potential of these types of polymers is related to their properties enabling them to be processed by emulsification, separation, solubilization, surface (interfacial) tension, and adsorption for the production of a range of drug delivery systems. Biosurfactants have been employed as a drug delivery system to improve the bioavailability of a good number of drugs that exhibit low aqueous solubility. The great potential of these molecules is related to their auto assembly and emulsification capacity. Biosurfactants produced from bacteria are of particular interest due to their antibacterial, antifungal, and antiviral properties with therapeutic and biomedical potential. In this review, we discuss recent advances and perspectives of biosurfactants with antimicrobial properties and how they can be used as structures to develop semisolid hydrogels for drug delivery, in environmental bioremediation, in biotechnology for the reduction of production costs and also their ecotoxicological impact as pesticide alternative.
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Affiliation(s)
- Thiago R. Bjerk
- Institute of Technology and Research (ITP), Av. Murilo Dantas 300, Aracaju 49010-390, Brazil; (T.R.B.); (P.S.); (S.J.); (C.M.)
| | - Patricia Severino
- Institute of Technology and Research (ITP), Av. Murilo Dantas 300, Aracaju 49010-390, Brazil; (T.R.B.); (P.S.); (S.J.); (C.M.)
- Industrial Biotechnology Program, University of Tiradentes (UNIT), Av. Murilo Dantas 300, Aracaju 49032-490, Brazil
| | - Sona Jain
- Institute of Technology and Research (ITP), Av. Murilo Dantas 300, Aracaju 49010-390, Brazil; (T.R.B.); (P.S.); (S.J.); (C.M.)
| | - Conrado Marques
- Institute of Technology and Research (ITP), Av. Murilo Dantas 300, Aracaju 49010-390, Brazil; (T.R.B.); (P.S.); (S.J.); (C.M.)
- Industrial Biotechnology Program, University of Tiradentes (UNIT), Av. Murilo Dantas 300, Aracaju 49032-490, Brazil
| | - Amélia M. Silva
- Department of Biology and Environment, School of Life Sciences and Environment, University of Trás-os-Montes and Alto Douro (UTAD), 5001-801 Vila Real, Portugal;
- Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro (UTAD), 5001-801 Vila Real, Portugal
| | - Tatiana Pashirova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of Russian Academy of Sciences, Arbuzov St. 8, 420088 Kazan, Russia;
| | - Eliana B. Souto
- CEB—Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
- Correspondence:
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