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Li C, Wang Y, Zhou L, Cui Q, Sun W, Yang J, Su H, Zhao F. High mono-rhamnolipids production by a novel isolate Pseudomonas aeruginosa LP20 from oily sludge: characterization, optimization, and potential application. Lett Appl Microbiol 2024; 77:ovae016. [PMID: 38366661 DOI: 10.1093/lambio/ovae016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 01/18/2024] [Accepted: 02/14/2024] [Indexed: 02/18/2024]
Abstract
This study aims to isolate microbial strains for producing mono-rhamnolipids with high proportion. Oily sludge is rich in petroleum and contains diverse biosurfactant-producing strains. A biosurfactant-producing strain LP20 was isolated from oily sludge, identified as Pseudomonas aeruginosa based on phylogenetic analysis of 16S rRNA. High-performance liquid chromatography-mass spectrometry results indicated that biosurfactants produced from LP20 were rhamnolipids, mainly containing Rha-C8-C10, Rha-C10-C10, Rha-Rha-C8-C10, Rha-Rha-C10-C10, Rha-C10-C12:1, and Rha-C10-C12. Interestingly, more mono-rhamnolipids were produced by strain LP20 with a relative abundance of 64.5%. Pseudomonas aeruginosa LP20 optimally produced rhamnolipids at a pH of 7.0 and a salinity of 0.1% using glycerol and nitrate. The culture medium for rhamnolipids by strain LP20 was optimized by response surface methodology. LP20 produced rhamnolipids up to 6.9 g L-1, increased by 116%. Rhamnolipids produced from LP20 decreased the water surface tension to 28.1 mN m-1 with a critical micelle concentration of 60 mg L-1. The produced rhamnolipids emulsified many hydrocarbons with EI24 values higher than 56% and showed antimicrobial activity against Staphylococcus aureus and Cladosporium sp. with inhibition rates 48.5% and 17.9%, respectively. Pseudomonas aeruginosa LP20 produced more proportion of mono-rhamnolipids, and the LP20 rhamnolipids exhibited favorable activities and promising potential in microbial-enhanced oil recovery, bioremediation, and agricultural biocontrol.
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Affiliation(s)
- Chunyan Li
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province, 273165, China
| | - Yujing Wang
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province, 273165, China
| | - Liguo Zhou
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province, 273165, China
| | - Qingfeng Cui
- Research Center of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
| | - Wenzhe Sun
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province, 273165, China
| | - Junyuan Yang
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province, 273165, China
| | - Han Su
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province, 273165, China
| | - Feng Zhao
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province, 273165, China
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2
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Shaimerdenova U, Kaiyrmanova G, Lewandowska W, Bartoszewicz M, Swiecicka I, Yernazarova A. Biosurfactant and biopolymer producing microorganisms from West Kazakhstan oilfield. Sci Rep 2024; 14:2294. [PMID: 38280982 PMCID: PMC10821952 DOI: 10.1038/s41598-024-52906-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 01/24/2024] [Indexed: 01/29/2024] Open
Abstract
Microbiological enhanced oil recovery (MEOR) uses indigenous or exogenous microorganisms and nutrients to enhance oil production through synthesis of metabolites reducing oil viscosity and surface tension. In order to find bacteria suitable for MEOR, we studied 26 isolates from wells in the Akingen oilfield in West Kazakhstan. Six of them were selected for further analysis based on their ability to reduce surface tension to less than 40 mN/m, with the A9 isolate exhibiting tension reduction values of 32.76 ± 0.3 mN/m. Based on the morphological features, biochemical activities, and the 16S rRNA gene, the isolates were classified to the Bacillus subtilis group. In the phylogenetic analysis the isolates grouped into two main clusters. Genes encoding the surfactin synthetase subunits were found in A2, A8, A9, A12, PW2, only the PW2 strain had lchAA encoding lichenysin, while sacB encoding levan was noted in A2, A8, A9, and A12. The expression of srfAB, srfAC, and sacB tested with qPCR varied among strains. Nevertheless, whereas temperature moderately affects the expression level, with the highest level recorded at 40 °C, salinity significantly impacts the expression of the genes encoding biosurfactants. B. subtilis strains isolated in the study, especially A9, are promising for microbial-enhanced oil recovery.
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Affiliation(s)
- Ulzhan Shaimerdenova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, 71 Al-Farabi Ave, 050038, Almaty, Kazakhstan
| | - Gulzhan Kaiyrmanova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, 71 Al-Farabi Ave, 050038, Almaty, Kazakhstan
| | - Wioleta Lewandowska
- Doctoral School of Exact and Natural Sciences, University of Białystok, 1K Konstanty Ciołkowski Str, 15-245, Białystok, Poland
| | - Marek Bartoszewicz
- Faculty of Biology, University of Bialystok, 1J Konstanty Ciołkowski Str, 15-245, Bialystok, Poland
| | - Izabela Swiecicka
- Faculty of Biology, University of Bialystok, 1J Konstanty Ciołkowski Str, 15-245, Bialystok, Poland
- Laboratory of Applied Microbiology, Faculty of Biology, University of Bialystok, 1J Konstanty Ciołkowski Str, 15-245, Bialystok, Poland
| | - Aliya Yernazarova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, 71 Al-Farabi Ave, 050038, Almaty, Kazakhstan.
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3
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Niu Y, Sun Y, Yang Y, Niu B, Wang Y, Qiao S. Antibacterial Mechanism of Rhamnolipids against Bacillus cereus and Its Application in Fresh Wet Noodles. Molecules 2023; 28:6946. [PMID: 37836789 PMCID: PMC10574271 DOI: 10.3390/molecules28196946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/02/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
Bacillus cereus (B. cereus) is a common foodborne pathogen causing food poisoning incidents. This study aimed to evaluate the antibacterial activity and underlying mechanism of rhamnolipids (RLs) against B. cereus. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of RLs for B. cereus were determined to be 16.0 mg/L and 32.0 mg/L, respectively. Scanning electron microscopy and fluorescence microscope images, as well as data of membrane potential, relative electric conductivity, and leakage of intracellular components revealed that RLs disrupted the integrity of the cell membrane. Furthermore, the reactive oxygen species content, catalase (CAT) and superoxide dismutase (SOD) activity indicated that RLs activated the oxidative stress response of B. cereus in response to RLs. Fresh wet noodles (FWN) were used as a food model, and RLs showed a significant killing effect on B. cereus with a sustained inhibitory effect at the concentrations ranging from 128.0 to 1024.0 mg/kg. Additionally, RLs promoted the conversion of free water to bound water in FWN, which improved the storage of FWN and made the taste more resilient and chewy. These results suggest that RLs could be a potential alternative to antimicrobial agents and preservatives for applications in food processing.
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Affiliation(s)
- Yongwu Niu
- National Engineering Research Center for Wheat and Corn Further Processing, Henan University of Technology, Zhengzhou 450001, China
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yiming Sun
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yanxiao Yang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Ben Niu
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yuchen Wang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Shan Qiao
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
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Chen Y, Ma F, Wu Y, Tan S, Niu A, Qiu W, Wang G. Biosurfactant from Pseudomonas fragi enhances the competitive advantage of Pseudomonas but reduces the overall spoilage ability of the microbial community in chilled meat. Food Microbiol 2023; 115:104311. [PMID: 37567617 DOI: 10.1016/j.fm.2023.104311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 05/07/2023] [Accepted: 06/01/2023] [Indexed: 08/13/2023]
Abstract
Biosurfactants from Pseudomonas spp. have been reported to exhibit antibacterial and anti-adhesive properties, but their role during meat spoilage remains unclear. In this study, the biosurfactant was isolated from an isolate of Pseudomonas fragi with strong spoilage potential, and its surface tension and emulsification ability were determined. The chemical and microbial characteristics of the biosurfactant-treated meat samples were periodically analyzed. The results demonstrated that the biosurfactant produced by P. fragi could reduce surface tension and showed good emulsification properties. For the in situ spoilage trials, biosurfactant from P. fragi changed the microbial diversity on meat, helping Pseudomonas establish a dominant position in the population. However, biosurfactant treatment caused chicken meat to exhibit a weaker spoilage state, as indicated by the growth of psychrophilic microorganisms, total volatile basic nitrogen (TVBN) and meat color. These results provide practical information for understanding the role of P. fragi biosurfactant during chilled meat storage.
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Affiliation(s)
- Yuping Chen
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, 210023, China
| | - Fang Ma
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Yajie Wu
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, 210023, China
| | - Song Tan
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, 210023, China
| | - Ajuan Niu
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, 210023, China
| | - Weifen Qiu
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, 210023, China
| | - Guangyu Wang
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, 210023, China.
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Chafale A, Das S, Kapley A. Valorization of oily sludge waste using biosurfactant-producing bacteria. World J Microbiol Biotechnol 2023; 39:316. [PMID: 37743461 DOI: 10.1007/s11274-023-03759-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 09/09/2023] [Indexed: 09/26/2023]
Abstract
Oily sludge generated by the petroleum industry is not only an environmental hazard, but since it contains crude oil too, it is a valuable resource as well. This study demonstrates a methodology for the valorization of the oily sludge that allows the recovery of oil fractions by the action of microbes producing surface-active metabolites. Two bacterial isolates were used in the study that were producing different biosurfactants, identified via FTIR analysis as well as through genomic mapping of the biosurfactant pathways using RAST, ANTISMASH 7.0, STRING databases. Serratia spp. AKBS12, produced a mono-rhamnolipid, while Acinetobacter spp. AKBS16, produced emulsan. Although recovery efficiency of both biosurfactants was similar, the recovery profile with respect to the class of hydrocarbons differed. The rhamnolipid produced by Serratia spp. AKBS12 extracted mono-chained paraffins and linear alkanes, while emulsan, produced by Acinetobacter spp. AKBS16 could extract heavier paraffins. The extraction procedure is simple and involves mixing the biosurfactant with oily sludge at a temperature of 30 °C with an incubation of 9 days. Sulphuric acid precipitation releases the oil trapped in the oily sludge. The study is the first step in developing user-friendly, innovative technologies that can be linked to the concept of a circular economy.
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Affiliation(s)
- Ayushi Chafale
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nagpur, 440020, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sera Das
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Analytical Instruments Division, National Environmental Engineering Research Institute, Council of Scientific and Industrial Research, Nehru Marg, Nagpur, 440020, India
| | - Atya Kapley
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nagpur, 440020, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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6
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Braz LM, Salazar-Bryam AM, Andrade GSS, Tambourgi EB. Optimization and characterization of rhamnolipids produced by Pseudomonas aeruginosa ATCC 9027 using molasses as a substrate. World J Microbiol Biotechnol 2022; 39:51. [PMID: 36544076 DOI: 10.1007/s11274-022-03494-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 12/11/2022] [Indexed: 12/24/2022]
Abstract
The present study aims to evaluate the growth potential of the P. aeruginosa ATCC9027 strain with molasses as the sole carbon source to produce rhamnolipids. The influence of the cultivation time and substrate concentration on biosurfactant production was investigated by using a complete 3-level factorial design, with the rhamnolipid concentration as the variable response. The strain was able to produce the biosurfactant in all design conditions tested, producing 758.04 mg/L rhamnolipids with 7% v/v substrate concentration in a cultivation time of 120 h. The substrate concentration used in the cultivation step directly influenced the biosurfactant production, and, even with the decrease in biomass growth, the biosurfactant production continued to increase. High Performance Liquid Chromatography (HPLC) revealed the presence of 62.3% mono- (RL1) and 37.6% di-rhamnolipids (RL3). The stability tests showed that the biosurfactant has good performance in extreme conditions of temperature, pH and saline concentration. The emulsification index was also evaluated for several oils and hydrocarbons, obtaining emulsification rates of up to 84.9% for the burnt motor oil. In addition, rhamnolipid showed a good ability to remove spilled oil from the sand, removing 58.51% of burnt motor oil and 70.09% of post-frying soybean oil. The results indicate that molasses, an agro-industrial residue abundant in Brazil, can be used as the only carbon source for quality rhamnolipid production when under optimized conditions, therefore presenting itself as a management option for this residue and, at the same time, providing the production product with high added value.
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Affiliation(s)
- Letícia Martini Braz
- State University of Campinas, Av. Albert Einstein, 500, Cidade Universitária Zeferino Vaz, Campinas, SP, CEP: 13083-852, Brazil.
| | - Ana María Salazar-Bryam
- Institute of Biosciences, São Paulo State University (Unesp), Rio Claro, SP, CEP: 13506-900, Brazil
| | - Grazielle Santos Silva Andrade
- Federal University of Alfenas, Rodovia José Aurélio Vilela, 11999 (BR 267 Km 533) Cidade Universitária, Poços de Caldas, MG, CEP: 37715-400, Brazil
| | - Elias Basille Tambourgi
- State University of Campinas, Av. Albert Einstein, 500, Cidade Universitária Zeferino Vaz, Campinas, SP, CEP: 13083-852, Brazil
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Li D, Tao W, Yu D, Li S. Emulsifying Properties of Rhamnolipids and Their In Vitro Antifungal Activity against Plant Pathogenic Fungi. Molecules 2022; 27:molecules27227746. [PMID: 36431843 PMCID: PMC9694558 DOI: 10.3390/molecules27227746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/04/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
Rhamnolipids have significant emulsifying activity and the potential to become a component of pesticide emulsifier. Rhamnolipids are usually composed of two main components: mono-rhamnolipids (Rha-C10-C10) and di-rhamnolipids (Rha2-C10-C10). The proportion of di-rhamnolipids in the products ranged between 15% and 90%, affected by the production strains and fermentation process. In this paper, three kinds of rhamnolipid products containing di-rhamnolipids proportions, of 25.45, 46.46 and 89.52%, were used to test their emulsifying ability toward three conventional solvents used in pesticide (S-200, xylene, cyclohexanone) and antifungal activities against five strains of plant pathogenic fungi (Phytophthora capsici, Phytophthora parasitica var.nicotianae, Colletotrichum destructivum, Colletotrichum sublineolum, Fusarium oxysporum). The results indicated that although the CMC of the three rhamnolipids were significantly different, their emulsification properties had no remarkable differences, at a concentration of 10 g/L. However, their antifungal activities were significantly different: the more di-rhamnolipids, the stronger the antifungal activity. This work helps to promote the application of rhamnolipids as pesticides adjuvants.
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Affiliation(s)
- Dongmei Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Weiyi Tao
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Dinghua Yu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Shuang Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
- Correspondence: ; Tel.: +86-25-5813-9942; Fax: +86-25-5813-9942
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8
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Di- and Mono-Rhamnolipids Produced by the Pseudomonas putida PP021 Isolate Significantly Enhance the Degree of Recovery of Heavy Oil from the Romashkino Oil Field (Tatarstan, Russia). Processes (Basel) 2022. [DOI: 10.3390/pr10040779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Around the globe, only 30–50% of the amount of oil estimated to be in reservoirs (“original oil in place”) can be obtained using primary and secondary oil recovery methods. Enhanced oil recovery methods are required in the oil processing industry, and the use of microbially produced amphiphilic molecules (biosurfactants) is considered a promising efficient and environmentally friendly method. In the present study, biosurfactants produced by the Pseudomonas putida PP021 isolate were extracted and characterized, and their potential to enhance oil recovery was demonstrated. It was found that the cell-free biosurfactant-containing supernatant decreased the air–water interface tension from 74 to 28 mN m−1. Using TLC and FTIR methods, the biosurfactants produced by the isolate were classified as mono- and di-rhamnolipid mixtures. In the isolates’ genome, the genes rhlB and rhlC, encoding enzymes involved in the synthesis of mono- and di-rhamnolipids, respectively, were revealed. Both genes were expressed when the strain was cultivated on glycerol nitrate medium. As follows from the sand-packed column and core flooding simulations, biosurfactants produced by P. putida PP021 significantly enhance the degree of recovery, resulting in additional 27% and 21%, respectively.
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Li Z, Lin J, Wang W, Huang H, Yu D, Li S. Effect of Rhamnolipid Amidation on Biosurfactant Adsorption Loss and Oil-Washing Efficiency. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:2435-2444. [PMID: 35170312 DOI: 10.1021/acs.langmuir.1c02551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Surfactant adsorption loss seriously hinders the economy of surfactant binary flooding technology for enhancing oil recovery, especially for biosurfactants with higher manufacturing costs. Here, biosurfactant rhamnolipid (RL) is chemically modified to develop a more efficient surfactant, rhamnolipid monoethanol amide (RL-MEA), which is characterized by decreased adsorption loss and increased oil-washing efficiency for enhanced oil recovery at a laboratory scale. Synthesis and characterization of the rhamnolipid monoethanol amide are carried out using high-performance liquid chromatography (HPLC), HPLC/MS, 1H nuclear magnetic resonance (NMR), and Fourier transform infrared (FTIR) spectroscopy. The aggregation behavior is disclosed by surface tension, dynamic light scattering, and fluorescence spectra with pyrene as the probe. The applied performances of RL-MEA in the simulated enhanced oil recovery are researched, including the efficiency of oil washing, wettability to crude oil, and adsorption isotherms on silicates. Compared with the critical micelle concentration (CMC) of rhamnolipid of 14.23 × 10-5 M in pure water and 9.02 × 10-5 M in 0.2 M NaCl solution, the modified RL-MEA shows a significantly lower CMC of 7.15 × 10-5 M in pure water and 5.34 × 10-5 M in 0.2 M NaCl solution. More importantly, the modified RL-MEA reduces adsorption loss by 20% and enhanced oil-washing efficiency at higher temperatures and salt concentrations compared with the parent RLs. These findings would provide valuable information for developing efficient surfactant flooding agents for harsh reservoir geological conditions.
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Affiliation(s)
- Zhuangzhuang Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Junzhang Lin
- Research Institute of Petroleum Engineering and Technology, Sinopec Shengli Oilfield, Dongying 257000, Shandong, P. R. China
| | - Weidong Wang
- Research Institute of Petroleum Engineering and Technology, Sinopec Shengli Oilfield, Dongying 257000, Shandong, P. R. China
| | - He Huang
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Dinghua Yu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Shuang Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
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10
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Process Development in Biosurfactant Production. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2022; 181:195-233. [DOI: 10.1007/10_2021_195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Rathankumar AK, Saikia K, Ribeiro MH, Cheng CK, Purushothaman M, Vaidyanathan VK. Application of statistical modeling for the production of highly pure rhamnolipids using magnetic biocatalysts: Evaluating its efficiency as a bioremediation agent. JOURNAL OF HAZARDOUS MATERIALS 2021; 412:125323. [PMID: 33951876 DOI: 10.1016/j.jhazmat.2021.125323] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/11/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
In the present study, highly pure rhamnolipids (RLs) was produced using biocatalysts immobilized on amino-functionalized chitosan coated magnetic nanoparticles. Upon immobilizing naringinase and Candida antarctica lipase B (CaLB) under the optimized conditions, an enhanced operational stability with biocatalytic loads of 935 ± 2.4 U/g (naringinase) and 825 ± 4.1 U/g (CaLB) were achieved. Subsequently, the immobilized biocatalysts were utilized sequentially in a two-step RLs synthesis process. The key parameters involved in RLs production were optimized using artificial neural network (ANN) coupled genetic algorithm (GA) and were compared with composite central design (CCD). On validating the efficiency of both models, mean square errors of 1.58% (CCD) and 1.04% (ANN) were obtained. Optimization of parameters by ANN-GA resulted in 1.2-fold increase in experimental RLs yield (80.53%), which was 1.05-fold higher when compared to CCD model. Further, to establish the efficiency of RLs as a bioremediation agent, it was utilized as washing agent. It was observed that at a soil to RLs volume of 1:05, RLs concentration of 0.4 mg/mL, a 95.35 ± 1.33% removal of Total Petroleum Hydrocarbons (TPHs) was obtained at 35 ℃ and 160 rpm in 75 min. Thus, this strategy provides an efficient biocatalytic toolbox for RLs synthesis, which can be effectively used as a bioremediation agent.
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Affiliation(s)
- Abiram Karanam Rathankumar
- Integrated Bioprocessing Laboratory, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, Tamil Nadu 603203, India
| | - Kongkona Saikia
- Integrated Bioprocessing Laboratory, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, Tamil Nadu 603203, India
| | - Maria H Ribeiro
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Chin Kui Cheng
- Department of Chemical Engineering, College of Engineering, Khalifa University, Abu Dhabi 127788, United Arab Emirates
| | - Maheswari Purushothaman
- Department of Chemistry, SRM Valliammai Engineering College, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - Vinoth Kumar Vaidyanathan
- Integrated Bioprocessing Laboratory, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, Tamil Nadu 603203, India.
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de Paula Siqueira T, Barbosa WF, Rodrigues EM, Miranda FR, de Souza Freitas F, Martins GF, Tótola MR. Rhamnolipids on Aedes aegypti larvae: a potential weapon against resistance selection. 3 Biotech 2021; 11:172. [PMID: 33927963 DOI: 10.1007/s13205-021-02716-9] [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: 12/01/2020] [Accepted: 03/03/2021] [Indexed: 11/28/2022] Open
Abstract
The resistance of Aedes aegypti to chemical insecticides has been reported and our work proposes the use of biosurfactants as an alternative larvicide. We evaluated the effect of rhamnolipids against larvae of pyrethroid-resistant and susceptible A. aegypti strains. Time-mortality and sublethal effects were evaluated via survival analysis and swimming behavior, respectively. Rhamnolipids showed larvicidal effect at all tested concentrations. Rhamnolipids at 300 mg L-1 killed 100% of both susceptible and resistant larvae within 24 h of exposure and 99% after 30-days stored (pyrethroid-susceptible larvae). Regarding the sublethal effects, the swimming rate was reduced in 50 and 100 mg L-1 of rhamnolipids in grouped (pyrethroid-susceptible) larvae. Rhamnolipids at 50 mg L-1 reduced the distance and speed and increased the number of stops and resting time of individualized pyrethroid-susceptible larvae. The larvicidal effect of the rhamnolipids evaluated demonstrates that these compounds represent an alternative to control A. aegypti.
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Affiliation(s)
- Tatiane de Paula Siqueira
- Laboratório de Biotecnologia e Biodiversidade para o Meio Ambiente, Departamento de Microbiologia, Universidade Federal de Viçosa, Av. P.H. Rolfs s/n, Centro, Viçosa, Minas Gerais Brazil
| | - Wagner Faria Barbosa
- Programa de Pós-Graduação em Entomologia, Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais Brazil
| | - Edmo Montes Rodrigues
- Laboratório de Biotecnologia e Biodiversidade para o Meio Ambiente, Departamento de Microbiologia, Universidade Federal de Viçosa, Av. P.H. Rolfs s/n, Centro, Viçosa, Minas Gerais Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Ceará-IFCE-Campus Camocim, Camocim, Ceará Brazil
| | - Franciane Rosa Miranda
- Programa de Pós-Graduação em Entomologia, Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais Brazil
- Laboratório de Biologia Molecular de Insetos, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais Brazil
| | - Fernanda de Souza Freitas
- Laboratório de Biotecnologia e Biodiversidade para o Meio Ambiente, Departamento de Microbiologia, Universidade Federal de Viçosa, Av. P.H. Rolfs s/n, Centro, Viçosa, Minas Gerais Brazil
| | - Gustavo Ferreira Martins
- Laboratório de Biologia Molecular de Insetos, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais Brazil
| | - Marcos Rogério Tótola
- Laboratório de Biotecnologia e Biodiversidade para o Meio Ambiente, Departamento de Microbiologia, Universidade Federal de Viçosa, Av. P.H. Rolfs s/n, Centro, Viçosa, Minas Gerais Brazil
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Liang K, Gao R, Wang C, Wang W, Yan W. Chemotaxis Toward Crude Oil by an Oil-Degrading Pseudomonas aeruginosa 6-1B Strain. Pol J Microbiol 2021; 70:69-78. [PMID: 33815528 PMCID: PMC8008757 DOI: 10.33073/pjm-2021-006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 01/06/2021] [Accepted: 01/17/2021] [Indexed: 11/24/2022] Open
Abstract
The chemotactic properties of an oil-degrading Pseudomonas aeruginosa strain 6-1B, isolated from Daqing Oilfield, China, have been investigated. The strain 6-1B could grow well in crude oil with a specific rhamnolipid biosurfactant production. Furthermore, it exhibits chemotaxis toward various substrates, including glycine, glycerol, glucose, and sucrose. Compared with another oil-degrading strain, T7-2, the strain 6-1B presented a better chemotactic response towards crude oil and its vital component, n-alkenes. Based on the observed distribution of the strain 6-1B cells around the oil droplet in the chemotactic assays, the potential chemotaxis process of bacteria toward crude oil could be summarized in the following steps: searching, moving and consuming.
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Affiliation(s)
- Kaiqiang Liang
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, China.,Research Institute of Yanchang Petroleum (Group) Co. Ltd., Xi'an, China
| | - Ruimin Gao
- Research Institute of Yanchang Petroleum (Group) Co. Ltd., Xi'an, China
| | - Chengjun Wang
- College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, China
| | - Weibo Wang
- Research Institute of Yanchang Petroleum (Group) Co. Ltd., Xi'an, China
| | - Wei Yan
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, China
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14
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Zhao F, Yuan M, Lei L, Li C, Xu X. Enhanced production of mono-rhamnolipid in Pseudomonas aeruginosa and application potential in agriculture and petroleum industry. BIORESOURCE TECHNOLOGY 2021; 323:124605. [PMID: 33388600 DOI: 10.1016/j.biortech.2020.124605] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 05/05/2023]
Abstract
Differences in the rhamnolipid structures must result in its different activities, thus affecting its application effect. The rhlC gene in Pseudomonas aeruginosa SG was knocked out to construct strain P. aeruginosa SGΔrhlC. Rhamnolipid production was enhanced by 23.3% through knocking out rhlC gene. P. aeruginosa SGΔrhlC produced 14.22 g/L of rhamnolipid using glycerol and nitrate. Five kinds of mono-rhamnolipid but no di-rhamnolipid were produced by strain SGΔrhlC. The main rhamnolipid homologues were Rha-C10-C10, Rha-C10-C12:1 and Rha-C10-C12. Mono-rhamnolipid exhibited better antimicrobial activity to Escherichia coli, Staphylococcus aureus, Aspergillus niger and Penicillium chrysogenum. Rhamnolipid produced from strain SGΔrhlC showed greater emulsifying activity to crude oil with EI24 of 84.73%. Rhamnolipid produced from strain SGΔrhlC efficiently washed oily sludge at 35 °C. High-producing strain P. aeruginosa SGΔrhlC and its produced mono-rhamnolipid are more promising in agriculture and petroleum industry. This study is a step forward to the tailor-made biosynthesis and application of rhamnolipid.
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Affiliation(s)
- Feng Zhao
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province 273165, China.
| | - Menglin Yuan
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province 273165, China
| | - Liying Lei
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning Province 110016, China
| | - Chunyan Li
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province 273165, China
| | - Xiaomeng Xu
- School of Life Sciences, Qufu Normal University, Qufu, Shandong Province 273165, China
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Kubicki S, Bator I, Jankowski S, Schipper K, Tiso T, Feldbrügge M, Blank LM, Thies S, Jaeger KE. A Straightforward Assay for Screening and Quantification of Biosurfactants in Microbial Culture Supernatants. Front Bioeng Biotechnol 2020; 8:958. [PMID: 32974305 PMCID: PMC7468441 DOI: 10.3389/fbioe.2020.00958] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/24/2020] [Indexed: 01/24/2023] Open
Abstract
A large variety of microorganisms produces biosurfactants with the potential for a number of diverse industrial applications. To identify suitable wild-type or engineered production strains, efficient screening methods are needed, allowing for rapid and reliable quantification of biosurfactants in multiple cultures, preferably at high throughput. To this end, we have established a novel and sensitive assay for the quantification of biosurfactants based on the dye Victoria Pure Blue BO (VPBO). The assay allows the colorimetric assessment of biosurfactants directly in culture supernatants and does not require extraction or concentration procedures. Working ranges were determined for precise quantification of different rhamnolipid biosurfactants; titers in culture supernatants of recombinant Pseudomonas putida KT2440 calculated by this assay were confirmed to be the same ranges detected by independent high-performance liquid chromatography (HPLC)-charged aerosol detector (CAD) analyses. The assay was successfully applied for detection of chemically different anionic or non-ionic biosurfactants including mono- and di-rhamnolipids (glycolipids), mannosylerythritol lipids (MELs, glycolipids), 3-(3-hydroxyalkanoyloxy) alkanoic acids (fatty acid conjugates), serrawettin W1 (lipopeptide), and N-acyltyrosine (lipoamino acid). In summary, the VPBO assay offers a broad range of applications including the comparative evaluation of different cultivation conditions and high-throughput screening of biosurfactant-producing microbial strains.
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Affiliation(s)
- Sonja Kubicki
- Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf, Jülich, Germany
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
| | - Isabel Bator
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
- iAMB-Institute of Applied Microbiology, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Aachen, Germany
| | - Silke Jankowski
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
- Center of Excellence on Plant Sciences, Institute for Microbiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Kerstin Schipper
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
- Center of Excellence on Plant Sciences, Institute for Microbiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Till Tiso
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
- iAMB-Institute of Applied Microbiology, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Aachen, Germany
| | - Michael Feldbrügge
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
- Center of Excellence on Plant Sciences, Institute for Microbiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Lars M. Blank
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
- iAMB-Institute of Applied Microbiology, ABBt-Aachen Biology and Biotechnology, RWTH Aachen University, Aachen, Germany
| | - Stephan Thies
- Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf, Jülich, Germany
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
| | - Karl-Erich Jaeger
- Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf, Jülich, Germany
- Forschungszentrum Jülich GmbH, Bioeconomy Science Center (BioSC), Jülich, Germany
- Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences IBG 1: Biotechnology, Jülich, Germany
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