1
|
Ferroni Passos T, Nitschke M. The combined effect of pH and NaCl on the susceptibility of Listeria monocytogenes to rhamnolipids. Food Res Int 2024; 192:114744. [PMID: 39147550 DOI: 10.1016/j.foodres.2024.114744] [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: 06/10/2024] [Revised: 07/09/2024] [Accepted: 07/10/2024] [Indexed: 08/17/2024]
Abstract
The use of natural and sustainable additives, that are less aggressive to the environment, is a trend in the food industry. Rhamnolipids (RL) biosurfactants have shown potential for controlling food pathogens however, due to the presence of free carboxyl groups, the pH and ionic strength may influence the properties of such surfactants. In this study, we describe the antimicrobial activity of RL under different pH values and NaCl concentrations, towards both planktonic and biofilms of Listeria monocytogenes. RL were effective at pH 5.0 and the addition of 5 % NaCl improved the bactericidal efficacy for planktonic and sessile cells. The effect of NaCl was more pronounced at pH above 6 showing a significant increase in RL antimicrobial activity. At pH 7.0 planktonic population was eradicated by RL only when salt was present whereas biofilm viability was decreased by 5 log with MBIC varying from > 2500.0 mg/L (RL) to 39.0 mg/L (RL + 5 % NaCl). Larger vesicular and lamellar RL self-assembly structures were predominant when NaCl was present, suggesting their association with the antimicrobial activity observed. The pH and ionic strength of the medium are important parameters to be considered for the development of RL-based strategies to control L. monocytogenes.
Collapse
Affiliation(s)
- Tathiane Ferroni Passos
- University of São Paulo (USP), São Carlos Institute of Chemistry (IQSC), Av. Trabalhador São Carlense, 400, CP-780, São Carlos, SP - CEP 13566-590, Brazil
| | - Marcia Nitschke
- University of São Paulo (USP), São Carlos Institute of Chemistry (IQSC), Av. Trabalhador São Carlense, 400, CP-780, São Carlos, SP - CEP 13566-590, Brazil.
| |
Collapse
|
2
|
Chio C, Shrestha S, Carr G, Khatiwada JR, Zhu Y, Li O, Chen X, Hu J, Qin W. Optimization and purification of bioproducts from Bacillus velezensis PhCL fermentation and their potential on industrial application and bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166428. [PMID: 37619727 DOI: 10.1016/j.scitotenv.2023.166428] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023]
Abstract
Bioproduction is considered a promising alternative way of obtaining useful and green chemicals. However, the downstream process of biomolecules has been one of the major difficulties in upscaling the application of bioproducts due to the high purification cost. Acid precipitation is the most common method for purifying biosurfactants from the fermentation broth with high purity. However, the use of strong acids and organic solvents in solvent extraction has limited its application. Hence, in this study, a new strain of Bacillus velezensis PhCL was isolated from phenolic waste, and its production of amylase had been optimized via response surface methodology. After that, amylase and biosurfactant were purified by sequential ammonium sulfate precipitation and the result suggested that even though the purified crude biosurfactant had a lower purification fold compared to the acid precipitation, the yield was higher and both enzymes and biosurfactant also could be recovered for lowering the purification cost. Moreover, the purified amylase and crude biosurfactant were characterized and the results suggested that the purified crude biosurfactant would have a higher emulsion activity and petroleum hydrocarbon removal rate compared to traditional surfactants. This study provided another approach for purifying bioactive compounds including enzymes and biosurfactants from the same fermentation broth and further explored the potential of the crude purified biosurfactant in the bioremediation of polycyclic aromatic hydrocarbons and petroleum hydrocarbons.
Collapse
Affiliation(s)
- Chonlong Chio
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Sarita Shrestha
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Griffin Carr
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Janak Raj Khatiwada
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Yuen Zhu
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada; College of Environmental & Resource Sciences, Shanxi University, Taiyuan 030006, Shanxi Province, China
| | - Ou Li
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada; College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xuantong Chen
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Jing Hu
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada
| | - Wensheng Qin
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada.
| |
Collapse
|
3
|
Biofouling in Membrane Bioreactors: Mechanism, Interactions and Possible Mitigation Using Biosurfactants. Appl Biochem Biotechnol 2023; 195:2114-2133. [PMID: 36385366 DOI: 10.1007/s12010-022-04261-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2022] [Indexed: 11/18/2022]
Abstract
Biofouling roots damage to membrane bioreactors (MBRs), such as physical, functional and organisational changes and even therefore clogging of the membrane pores and successive microbial degradation. Further, it blocks the pores, results into a biomass cake and in due course reduces the membrane flux and leads to an increase in the operational costs. MBR fouling contributed to the rise in transmembrane pressure (TMP) and decrease in permeate flux (in case of constant pressure operation mode). Chemical surfactants adopted for the cleaning of membrane surfaces have certain disadvantages such as toxicity manifestations, damage to the membranes and high CMC concentrations. Biosurfactant surfactants have attained increasing interest due to their low toxicity, biodegradability, stability to extreme environmental conditions such as temperatures, pH and tolerance to salinity. The biosurfactants trapped the foulants via micelle formation, which distresses hydrophobic interactions amongst bacteria and the surface. Rhamnolipids as an anionic biosurfactant pose a significant interfacial potential and have affinity to bind organic matter. The present review discusses the problem of biofouling in MBRs, type and interactions of foulants involved and also highlights the mechanisms of biosurfactant cleaning, effect of different parameters, effect of concentration, TMP, flux recovery, permeability, mitigation practices and challenges.
Collapse
|
4
|
Srivastava RK, Bothra N, Singh R, Sai MC, Nedungadi SV, Sarangi PK. Microbial originated surfactants with multiple applications: a comprehensive review. Arch Microbiol 2022; 204:452. [PMID: 35786779 DOI: 10.1007/s00203-022-03086-3] [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: 12/23/2021] [Revised: 06/09/2022] [Accepted: 06/16/2022] [Indexed: 11/02/2022]
Abstract
Microbial synthesized surfactants are used in contaminated soil bioremediation processes and have multiple applications in various industries. These compounds minimize the negative influences in soil via absorption by detoxifying the toxic metals or compounds. Further, applications of biosurfactants are detected in treating chronic diseases or synthetic drugs alternatives in current periods. Various surfactant molecules can provide many benefits due to their diversities in structural and functional groups. These compounds showed a wide array of applications in multiple sectors such as biomedical or pharmaceutical fields. Agricultural, food processing, laundry, or other sectors. Many microbial systems or plant cells are utilized in biosurfactant production as confirmed by biochemical analysis of genome sequencing tools. Biosurfactant compounds can alter drug transport across the cell membrane. Different nature of biosurfactant compounds exhibited their antifungal, antibacterial, antiviral activities, or antiadhesive coating agents used in reduction of many hospital infections. These distinct properties of biosurfactants pushed their broad spectrum applications in biomedical, agriculture sectors and bioremediation tasks. Additionally, many strains of fungi or bacteria are utilized for biosurfactant synthesis involved in the detoxification of soil/other components of the environment. In these reviews, authors explained various biosurfactants molecules and their mode of actions. Also, applications of microbial originated biosurfactants along with their process technologies are described. Future perspectives of biosurfactants and their scope are also critically explained so that this review paper can be used as a showcase for production and application of biosurfactants.
Collapse
Affiliation(s)
- Rajesh Kumar Srivastava
- Department of Biotechnology, GITAM. (Deemed to Be University, GITAM School of Technology, Visakhapatnam, 530045, Andhra Pradesh, India.
| | - Neha Bothra
- Department of Biotechnology, GITAM. (Deemed to Be University, GITAM School of Technology, Visakhapatnam, 530045, Andhra Pradesh, India
| | - Rimjhim Singh
- Department of Biotechnology, GITAM. (Deemed to Be University, GITAM School of Technology, Visakhapatnam, 530045, Andhra Pradesh, India
| | - M Chaitanya Sai
- Department of Biotechnology, GITAM. (Deemed to Be University, GITAM School of Technology, Visakhapatnam, 530045, Andhra Pradesh, India
| | - Sruthy Vineed Nedungadi
- Department of Biotechnology, GITAM. (Deemed to Be University, GITAM School of Technology, Visakhapatnam, 530045, Andhra Pradesh, India
| | | |
Collapse
|
5
|
Gidudu B, Chirwa EM. Electrokinetic extraction and recovery of biosurfactants using rhamnolipids as a model biosurfactant. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
6
|
Baskaran SM, Zakaria MR, Mukhlis Ahmad Sabri AS, Mohamed MS, Wasoh H, Toshinari M, Hassan MA, Banat IM. Valorization of biodiesel side stream waste glycerol for rhamnolipids production by Pseudomonas aeruginosa RS6. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 276:116742. [PMID: 33621735 DOI: 10.1016/j.envpol.2021.116742] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 02/06/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Biodiesel side stream waste glycerol was identified as a cheap carbon source for rhamnolipids (RLs) production which at the same time could improve the management of waste. The present study aimed to produce RLs by using Pseudomonas aeruginosa RS6 utilizing waste glycerol as a substrate and to evaluate their physico-chemicals properties. Fermentation conditions such as temperature, initial medium pH, waste glycerol concentration, nitrogen sources and concentrations resulted in different compositions of the mono- and di-RLs produced. The maximum RLs production of 2.73 g/L was obtained when P. aeruginosa RS6 was grown in a basal salt medium supplemented with 1% waste glycerol and 0.2 M sodium nitrate at 35 °C and pH 6.5. At optimal fermentation conditions, the emulsification index (E24) values of cooking oil, diesel oil, benzene, olive oil, petroleum, and kerosene were all above E24=50%. The surface tension reduction obtained from 72.13 mN/m to 29.4-30.4 mN/m was better than the surface activity of some chemical-based surfactants. The RLs produced possessed antimicrobial activities against Gram-negative and Gram-positive bacteria with values ranging from 37% to 77% of growth inhibition when 1 mg/mL of RLs was used. Concentrations of RLs below 1500 μg/mL did not induce phytotoxicity effects on the tested seeds (Vigna radiata) compared to the chemical-based- surfactant, SDS. Furthermore, RLs tested on zebrafish (Danio rerio) embryos only exhibited low acute toxicity with an LC50 value of 72.97 μg/mL at 48 h of exposure suggesting a green and eco-biochemical worthy of future applications to replace chemical-based surfactants.
Collapse
Affiliation(s)
- Shobanah Menon Baskaran
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Mohd Rafein Zakaria
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Laboratory of Processing and Product Development, Institute of Plantation Studies, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
| | - Ahmad Syafiq Mukhlis Ahmad Sabri
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Mohd Shamzi Mohamed
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Helmi Wasoh
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Maeda Toshinari
- Department of Biological Functions Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, 808-0196, Japan
| | - Mohd Ali Hassan
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Laboratory of Processing and Product Development, Institute of Plantation Studies, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| | - Ibrahim M Banat
- School of Biomedical Sciences, Faculty of Life and Health Sciences, University of Ulster, Coleraine BT52 1SA, Northern Ireland, UK
| |
Collapse
|
7
|
Ibrahim S, Diab A, Abdulla H. Bio-cleaning Efficiency of Rhamnolipids Produced from Native Pseudomonas aeruginosa Grown on Agro-industrial By-products for Liquid Detergent Formulation. Appl Biochem Biotechnol 2021; 193:2616-2633. [PMID: 33826066 DOI: 10.1007/s12010-021-03555-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/22/2021] [Indexed: 02/07/2023]
Abstract
The cleaning activity of surface-active agents such as rhamnolipids (RLs) requires utmost effectiveness and is employed abundantly in various industries, particularly laundry cleaning, detergents, and cosmetics. In the current study, RLs were produced from Pseudomonas aeruginosa isolated from oil-contaminated soil using a minimal medium amended with agro-industrial by-products of refinery vegetable oil wastes (comprising of unsaturated types of fatty acids as determined by GC analysis) and dairy whey. The results showed that an amount of 5.72 g/L of RLs were obtained, while lower concentrations were obtained using chemically defined carbon sources. Ten congeners of mono- and di-RLs were detected by LC-MS, and they reduced the surface tension of water to 26 mN/m with a critical micelle concentration of 33 mg/L. Furthermore, the produced RLs showed promising cleaning and detergency properties in the removal of different stains on tested fabrics with a Stain Removal Index (SRI) of 17.45%. Moreover, an efficient cleaning was obtained when RLs were applied to a liquid detergent formulation model, and a cleaning power (∆E) of 245.95 and SRI of 36.28% were achieved. The present work showed that the produced RLs could be exploited as a powerful and alternative eco-friendly cleaning agent in many industries.
Collapse
Affiliation(s)
- Sami Ibrahim
- Botany Department, Faculty of Science, Suez Canal University, P.O. Box: 41522, Ismailia, Egypt.
| | - Atef Diab
- Botany Department, Faculty of Science, Suez Canal University, P.O. Box: 41522, Ismailia, Egypt
| | - Hesham Abdulla
- Botany Department, Faculty of Science, Suez Canal University, P.O. Box: 41522, Ismailia, Egypt
| |
Collapse
|
8
|
Aghapour Aktij S, Taghipour A, Rahimpour A, Mollahosseini A, Tiraferri A. A critical review on ultrasonic-assisted fouling control and cleaning of fouled membranes. ULTRASONICS 2020; 108:106228. [PMID: 32717532 DOI: 10.1016/j.ultras.2020.106228] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 01/18/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
Fouling is one of the most challenging problems impacting the performance of membrane-based separation technology. In recent years, ultrasound have been widely applied as an unconventional method to control membrane fouling, as well as to enhance membrane cleaning. The aim of the present work is to review the current literature and the recent developments related to the use of ultrasound as an innovative and alternative approach to improve the fouling behavior of membrane separation processes. The theory underlying ultrasonic-assisted phenomena is reviewed, together with operational factors that influence the effectiveness of the ultrasound treatment, such as frequency, power intensity, pressure, temperature, pH, and operation mode. Ultrasound irradiation effectively aids the cleaning of contaminated surfaces and enhances the permeate flux, owing to cavitation phenomena and powerful convective currents, associated with secondary phenomena, such as microstreamers, shock waves, and heating. However, the lifetime of the membranes should be carefully evaluated when applying ultrasonication as a technique of cleaning or controlling membrane fouling. Indeed, the integrity of membranes after sonication and the control of erosion produced by high ultrasonic intensities are key issues hindering the scale-up of this approach in the membrane industry. This reviews highlights the topics requiring more investigations, specifically to evaluate the economic aspects of ultrasonic assisted fouling control and cleaning in membrane processes.
Collapse
Affiliation(s)
- Sadegh Aghapour Aktij
- Department of Chemical & Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada; Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Amirhossein Taghipour
- Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - Ahmad Rahimpour
- Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran; Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy; Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.
| | - Arash Mollahosseini
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Canada
| | - Alberto Tiraferri
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.
| |
Collapse
|
9
|
Xue YL, Huang J, Lau CH, Cao B, Li P. Tailoring the molecular structure of crosslinked polymers for pervaporation desalination. Nat Commun 2020; 11:1461. [PMID: 32193372 PMCID: PMC7081321 DOI: 10.1038/s41467-020-15038-w] [Citation(s) in RCA: 95] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/13/2020] [Indexed: 11/11/2022] Open
Abstract
Polymer crosslinking imbues chemical stability to thin films at the expense of lower molecular transportation rates. Here in this work we deployed molecular dynamics simulations to optimise the selection of crosslinking compounds that overcome this trade-off relationship. We validated these simulations using a series of experiments and exploited this finding to underpin the development of a pervaporation (PV) desalination thin-film composite membrane with water fluxes reaching 234.9 ± 8.1 kg m-2 h-1 and salt rejection of 99.7 ± 0.2 %, outperforming existing membranes for pervaporation and membrane distillation. Key to achieving this state-of-the-art desalination performance is the spray coating of 0.73 μm thick crosslinked dense, hydrophilic polymers on to electrospun nanofiber mats. The desalination performances of our polymer nanocomposites are harnessed here in this work to produce freshwater from brackish water, seawater and brine solutions, addressing the key environmental issue of freshwater scarcity.
Collapse
Affiliation(s)
- Yun Long Xue
- College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029, Beijing, China
| | - Jin Huang
- College of Engineering & Computer Science, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH, 45435, USA
| | - Cher Hon Lau
- School of Engineering, The University of Edinburgh, Robert Stevenson Road, The King's Buildings, Edinburgh, EH9 3FB, Scotland, UK
| | - Bing Cao
- College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029, Beijing, China
| | - Pei Li
- College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029, Beijing, China.
| |
Collapse
|
10
|
Shi X, Chen Y, Zhang X, Long X, Qian J. Biomass rhamnolipid modified poly(vinylidene fluoride) membrane with significantly improved surface hydrophilicity and enhanced antifouling performance. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2019.115330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
11
|
Gong Z, He Q, Che C, Liu J, Yang G. Optimization and scale-up of the production of rhamnolipid by Pseudomonas aeruginosa in solid-state fermentation using high-density polyurethane foam as an inert support. Bioprocess Biosyst Eng 2019; 43:385-392. [DOI: 10.1007/s00449-019-02234-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/15/2019] [Indexed: 11/24/2022]
|
12
|
Argenta AB, Scheer ADP. Membrane Separation Processes Applied to Whey: A Review. FOOD REVIEWS INTERNATIONAL 2019. [DOI: 10.1080/87559129.2019.1649694] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Aline Brum Argenta
- Graduate Program in Food Engineering, Federal University of Paraná, Centro Politécnico, Jardim das Américas, Curitiba, Paraná, Brazil
| | - Agnes De Paula Scheer
- Graduate Program in Food Engineering, Federal University of Paraná, Centro Politécnico, Jardim das Américas, Curitiba, Paraná, Brazil
- Department of Chemical Engineering, Federal University of Paraná, Centro Politécnico, Jardim das Américas, Curitiba, Paraná, Brazil
| |
Collapse
|
13
|
Silva ACSD, Santos PND, Silva TALE, Andrade RFS, Campos-Takaki GM. Biosurfactant production by fungi as a sustainable alternative. ARQUIVOS DO INSTITUTO BIOLÓGICO 2018. [DOI: 10.1590/1808-1657000502017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT: A wide variety of bacteria is far more exploited than fungi as biosurfactants (BS) or bioemulsifiers (BE), using renewable sources. BS are considered to be environmentally safe and offer advantages over synthetic surfactants. However, the BS yield depends largely on the metabolic pathways of the microorganisms and the nutritional medium. The production of BS or BE uses several cultural conditions, in which a small change in carbon and nitrogen sources affects the quantity of BS or BE produced. The type and quantity of microbial BS or BE produced depend mainly on the producer organism, and factors such as carbon and nitrogen sources, trace elements, temperature and aeration. The diversity of BS or BE makes it interesting to apply them in the pharmaceutical and cosmetics industries, agriculture, public health, food processes, detergents, when treating oily residues, environmental pollution control and bioremediation. Thus, this paper reviews and addresses the biotechnological potential of yeasts and filamentous fungi for producing, characterizing and applying BS or BE.
Collapse
|