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Liu D, Liu G, Liu S. Promising Application, Efficient Production, and Genetic Basis of Mannosylerythritol Lipids. Biomolecules 2024; 14:557. [PMID: 38785964 PMCID: PMC11117751 DOI: 10.3390/biom14050557] [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: 04/11/2024] [Revised: 05/01/2024] [Accepted: 05/03/2024] [Indexed: 05/25/2024] Open
Abstract
Mannosylerythritol lipids (MELs) are a class of glycolipids that have been receiving increasing attention in recent years due to their diverse biological activities. MELs are produced by certain fungi and display a range of bioactivities, making them attractive candidates for various applications in medicine, agriculture, and biotechnology. Despite their remarkable qualities, industrial-scale production of MELs remains a challenge for fungal strains. Excellent fungal strains and fermentation processes are essential for the efficient production of MELs, so efforts have been made to improve the fermentation yield by screening high-yielding strains, optimizing fermentation conditions, and improving product purification processes. The availability of the genome sequence is pivotal for elucidating the genetic basis of fungal MEL biosynthesis. This review aims to shed light on the applications of MELs and provide insights into the genetic basis for efficient MEL production. Additionally, this review offers new perspectives on optimizing MEL production, contributing to the advancement of sustainable biosurfactant technologies.
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Affiliation(s)
- Dun Liu
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China;
| | - Guanglei Liu
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China;
| | - Shiping Liu
- State Key Laboratory of Resource Insects, Southwest University, Beibei, Chongqing 400716, China
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Fatma I, Sharma V, Thakur RC, Kumar A. Current trends in protein-surfactant interactions: A review. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117344] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Zhang A, Cui Q, Yu Z, Wang X, Zhao XH. Effects of transglutaminase glycosylated soy protein isolate on its structure and interfacial properties. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:5097-5105. [PMID: 33576008 DOI: 10.1002/jsfa.11155] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/22/2021] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUNDS The structural and interfacial properties of soybean protein isolate (SPI) after glycosylation by the transglutaminase method were studied. It is hoped that preliminary explorations will find a new food ingredient and broader application of SPI in the food industry. RESULTS The contents of free amino proves that transglutaminase can insert glucosamine into SPI through its transamination, and realize the enzymatic glycosylated SPI. The results of structure properties showed that a decrease in the content of the α-helical structure indicates that the rigid structure of the protein is opened and the flexibility is increased. The blue shift of the maximum fluorescence intensity of soy protein isolate-glucosamine with transglutaminase (SPI-G) indicates the formation of a new substance; scanning electron microscopy shows that the SPI-G powder can be seen at a magnification of 2000×, and the protein structure becomes soft. The results of interfacial properties found that enzymatic protein glycosylation exposes the internal hydrophobic groups of SPI, resulting in increased surface hydrophobicity, increased emulsification and emulsification stability, and reduced surface tension. CONCLUSION It shows that SPI-G effectively improves the interfacial properties of SPI, providing a theoretical basis for the application of enzymatic glycosylation of SPI in the food industry. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Anqi Zhang
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Qiang Cui
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Zhichao Yu
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Xibo Wang
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Xin-Huai Zhao
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, China
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Surfactants: physicochemical interactions with biological macromolecules. Biotechnol Lett 2021; 43:523-535. [PMID: 33534014 PMCID: PMC7872986 DOI: 10.1007/s10529-020-03054-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 12/07/2020] [Indexed: 12/14/2022]
Abstract
Macromolecules are essential cellular components in biological systems responsible for performing a large number of functions that are necessary for growth and perseverance of living organisms. Proteins, lipids and carbohydrates are three major classes of biological macromolecules. To predict the structure, function, and behaviour of any cluster of macromolecules, it is necessary to understand the interaction between them and other components through basic principles of chemistry and physics. An important number of macromolecules are present in mixtures with surfactants, where a combination of hydrophobic and electrostatic interactions is responsible for the specific properties of any solution. It has been demonstrated that surfactants can help the formation of helices in some proteins thereby promoting protein structure formation. On the other hand, there is extensive research towards the use of surfactants to solubilize drugs and pharmaceuticals; therefore, it is evident that the interaction between surfactants with macromolecules is important for many applications which includes environmental processes and the pharmaceutical industry. In this review, we describe the properties of different types of surfactants that are relevant for their physicochemical interactions with biological macromolecules, from macromolecules–surfactant complexes to hydrophobic and electrostatic interactions.
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Investigating the biomolecular interactions between model proteins and glycine betaine surfactant with reference to the stabilization of emulsions and antimicrobial properties. Colloids Surf B Biointerfaces 2020; 194:111226. [PMID: 32623332 DOI: 10.1016/j.colsurfb.2020.111226] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/04/2020] [Accepted: 06/25/2020] [Indexed: 11/23/2022]
Abstract
Binding effect and interaction of 2-pentadecanoyloxymethyl)trimethylammonium bromide (DMGM-14) with bovine serum albumin (BSA) and hen egg white lysozyme (HEWL) were systematically investigated by the fluorescence spectroscopy, circular dichroism (CD) spectroscopy, isothermal titration calorimetry (ITC), surface tension analysis, and molecular docking studies. The emulsion properties and particle size distribution of surfactant/protein complexes containing sunflower oil were studied using static light scattering and confocal laser scanning microscopy (CLSM). The fluorescence spectroscopy and ITC analysis confirmed the complexes formation of DMGM-14 with BSA and HEWL which was also verified by surface tension measurements. CD results explained the conformational changes in BSA and HEWL upon DMGM-14 complexation. Molecular docking study provides insight into the binding of DMGM-14 into the specific sites of BSA and HEWL. Besides, the studies drew a detailed picture on the emulsification properties of DMGM-14 with BSA and HEWL. In addition, the in vitro experiment revealed a broad antibacterial spectrum of DMGM-14 and DMGM-14/HEWL complex including activity against Gram-positive and Gram-negative bacteria. In conclusion, the present study revealed that the interaction between DMGM-14 with BSA and HEWL is important for the pharmaceutical, biological, and food products.
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Influences of mannosylerythritol lipid-A on the self-assembling structure formation and functional properties of heat-induced β-lactoglobulin aggregates. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2019.05.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Janek T, Czeleń P, Gudiña EJ, Rodrigues LR, Czyżnikowska Ż. Biomolecular interactions of lysosomotropic surfactants with cytochrome c and its effect on the protein conformation: A biophysical approach. Int J Biol Macromol 2019; 126:1177-1185. [DOI: 10.1016/j.ijbiomac.2019.01.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/19/2018] [Accepted: 01/05/2019] [Indexed: 12/20/2022]
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Ferreira GMD, Ferreira GMD, Agudelo ÁJP, Hudson EA, Pires ACDS, da Silva LHM. Lactoferrin denaturation induced by anionic surfactants: The role of the ferric ion in the protein stabilization. Int J Biol Macromol 2018; 117:1039-1049. [DOI: 10.1016/j.ijbiomac.2018.05.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/09/2018] [Accepted: 05/11/2018] [Indexed: 12/19/2022]
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Martínez-Ballesta MDC, García-Gomez P, Yepes-Molina L, Guarnizo AL, Teruel JA, Carvajal M. Plasma membrane aquaporins mediates vesicle stability in broccoli. PLoS One 2018; 13:e0192422. [PMID: 29420651 PMCID: PMC5805300 DOI: 10.1371/journal.pone.0192422] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/23/2018] [Indexed: 12/25/2022] Open
Abstract
The use of in vitro membrane vesicles is attractive because of possible applications in therapies. Here we aimed to compare the stability and functionality of plasma membrane vesicles extracted from control and salt-treated broccoli. The impact of the amount of aquaporins was related to plasma membrane osmotic water permeability and the stability of protein secondary structure. Here, we describe for first time an increase in plant aquaporins acetylation under high salinity. Higher osmotic water permeability in NaCl vesicles has been related to higher acetylation, upregulation of aquaporins, and a more stable environment to thermal denaturation. Based on our findings, we propose that aquaporins play an important role in vesicle stability.
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Affiliation(s)
- Maria del Carmen Martínez-Ballesta
- Aquaporin Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus de Espinardo, Espinardo, Murcia, Spain
| | - Pablo García-Gomez
- Aquaporin Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus de Espinardo, Espinardo, Murcia, Spain
| | - Lucía Yepes-Molina
- Aquaporin Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus de Espinardo, Espinardo, Murcia, Spain
| | - Angel L. Guarnizo
- Aquaporin Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus de Espinardo, Espinardo, Murcia, Spain
| | - José A. Teruel
- Departamento de Bioquímica y Biología Molecular A, Facultad de Veterinaria, Universidad de Murcia, Espinardo, Murcia, Spain
| | - Micaela Carvajal
- Aquaporin Group, Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Campus de Espinardo, Espinardo, Murcia, Spain
- * E-mail:
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Fan L, Xie P, Wang Y, Huang Z, Zhou J. Biosurfactant-Protein Interaction: Influences of Mannosylerythritol Lipids-A on β-Glucosidase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:238-246. [PMID: 29239606 DOI: 10.1021/acs.jafc.7b04469] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, the influences of a biosurfactant, mannosylerythritol lipids-A (MEL-A) toward β-glucosidase activity and their molecular interactions were studied by using differential scanning calorimetry (DSC), circular dichroism spectroscopy (CD), isothermal titration calorimetry (ITC), and docking simulation. The enzyme inhibition kinetics data showed that MEL-A at a low concentration (< critical micelle concentration (CMC), 20.0 ± 5.0 μM) enhanced β-glucosidase activity, whereas it inhibited the enzyme activity at higher concentrations more than 20.0 μM, followed by a decreased Vmax and Km of β-glucosidase. The thermodynamics and structural data demonstrated that the midpoint temperature (Tm) and unfolding enthalpy (ΔH) of β-glucosidase was shifted to high values (76.6 °C, 126.3 J/g) in the presence of MEL-A, and the secondary structure changes of β-glucosidase, including the increased α-helix, β-turn, or random coil contents, and a decreased β-sheet content were caused by MEL-A at a CMC concentration. The further ITC and docking simulations suggested the bindings of MEL-A toward β-glucosidase were driven by weak hydrophobic interactions happened between the amino acid residues of β-glucosidase and the fatty acid residues of MEL-A, in addition to hydrogen bonds between amino acids and hydroxyl in glycosyl residues of this biosurfactant.
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Affiliation(s)
- Linlin Fan
- Institute of Agro-product Processing , Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China
| | - Pujun Xie
- Institute of Chemical Industry of Forest Products, CAF , Key Laboratory of Biomass Energy and Material, Nanjing, Jiangsu 210042, China
| | - Ying Wang
- Institute of Agro-product Processing , Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China
| | - Zisu Huang
- Institute of Agro-product Processing , Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China
| | - Jianzhong Zhou
- Institute of Agro-product Processing , Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China
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Physicochemical study of biomolecular interactions between lysosomotropic surfactants and bovine serum albumin. Colloids Surf B Biointerfaces 2017; 159:750-758. [DOI: 10.1016/j.colsurfb.2017.08.046] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 08/05/2017] [Accepted: 08/25/2017] [Indexed: 01/28/2023]
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12
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Liu C, Cheng F, Yang X. Inactivation of Soybean Trypsin Inhibitor by Epigallocatechin Gallate: Stopped-Flow/Fluorescence, Thermodynamics, and Docking Studies. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:921-929. [PMID: 28099027 DOI: 10.1021/acs.jafc.6b04789] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Tea is one of the most widely daily consumed beverages all over the world, and it is usually consumed with milk and/or soy milk. However, very few researches have studied the interactions between tea polyphenols (TPs) and soy milk proteins as compared with milk proteins. Here, we reported that epigallocatechin gallate (EGCG), a major component of TPs, can effectively inhibit the inhibitory activity of Kunitz trypsin inhibitor (KTI, a major antinutrient in soy milk). The mechanism of inactivation of KTI by EGCG was investigated by stopped-flow/fluorescence, thermodynamics, and docking studies. The results indicated that EGCG binds KTI via both hydrophobic and hydrophilic interactions with an association constant of 6.62 × 105 M-1 to form a 1:1 complex. Molecular docking showed the participation of amino acids includes three amino acid residues (Asn13, Pro72, and Trp117) near the reactive site of KTI, which may prevent KTI from contacting trypsin and hence inactivate KTI.
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Affiliation(s)
- Chun Liu
- Research and Development Center of Food Proteins, School of Food Science and Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
| | - Fenfen Cheng
- Research and Development Center of Food Proteins, School of Food Science and Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
| | - Xiaoquan Yang
- Research and Development Center of Food Proteins, School of Food Science and Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology , Guangzhou 510640, People's Republic of China
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Liu J, Zhu N, Yang J, Yang Y, Wang R, Liu L, Yuan H. Lipopeptide produced from Bacillus sp. W112 improves the hydrolysis of lignocellulose by specifically reducing non-productive binding of cellulases with and without CBMs. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:301. [PMID: 29255484 PMCID: PMC5729243 DOI: 10.1186/s13068-017-0993-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 12/05/2017] [Indexed: 05/03/2023]
Abstract
BACKGROUND Surfactants have attracted increasing interest for their capability to improve the enzymatic hydrolysis of lignocellulosic biomass. Compared to chemical surfactants, biosurfactants have a broader prospect for industrial applications because they are more environmentally friendly and more effective in some researches. Commercial cellulase preparations are mainly composed of endoglucanases (EGs) and cellobiohydrolases (CBHs) that possess carbohydrate-binding modules (CBMs). However, the effects of lipopeptide-type biosurfactants on enzymatic saccharification of lignocellulose and adsorption behaviors of cellulases with CBMs remain unclear. RESULTS In this study, we found that Bacillus sp. W112 could produce a lipopeptide-type biosurfactant from untreated biomass, such as wheat bran and Jerusalem artichoke tuber. The lipopeptide could enhance the enzymatic hydrolysis of dilute acid pretreated Giant Juncao grass (DA-GJG) by fungal and bacterial enzymes. The enhancement increased over a range of temperatures from 30 to 50 °C. Lipopeptide was shown to be more effective in promoting DA-GJG saccharification than chemical surfactants at low dosages, with a best stimulatory degree of 20.8% at 2% loading of the substrates (w/w). Lipopeptide increased the thermostability of EG and CBH in commercial cellulase cocktails. Moreover, the dual effects of lipopeptide on the adsorption behaviors of cellulases were found. It specifically lowered the non-productive binding of cellulases to lignin and increased the binding of cellulases to cellulose. In addition, we investigated the influence of lipopeptide on the adsorption behaviors of CBHs with CBMs for the first time. Our results showed that lipopeptide reduced the adsorption of CBM-deleted CBH to DA-GJG to a greater extent than that of intact CBH while the non-productive binding of intact CBH to lignin was reduced more, indicating that lipopeptide decreased the binding of CBMs onto lignin but not their combination with cellulose. CONCLUSIONS In this study, we found that lipopeptide from Bacillus sp. W112 promoted the enzymatic hydrolysis of DA-GJG at relative low loadings. The stimulatory effect could be attributed to increasing the cellulase thermostability, reducing non-productive adsorption of cellulases with CBMs caused by lignin and enhancing the binding of cellulases to cellulose.
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Affiliation(s)
- Jiawen Liu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Ning Zhu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Jinshui Yang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yi Yang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Ruonan Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Liang Liu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Hongli Yuan
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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Paulino BN, Pessôa MG, Mano MCR, Molina G, Neri-Numa IA, Pastore GM. Current status in biotechnological production and applications of glycolipid biosurfactants. Appl Microbiol Biotechnol 2016; 100:10265-10293. [PMID: 27844141 DOI: 10.1007/s00253-016-7980-z] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 10/20/2016] [Accepted: 11/01/2016] [Indexed: 01/20/2023]
Abstract
Biosurfactants are natural compounds with surface activity and emulsifying properties produced by several types of microorganisms and have been considered an interesting alternative to synthetic surfactants. Glycolipids are promising biosurfactants, due to low toxicity, biodegradability, and chemical stability in different conditions and also because they have many biological activities, allowing wide applications in different fields. In this review, we addressed general information about families of glycolipids, rhamnolipids, sophorolipids, mannosylerythritol lipids, and trehalose lipids, describing their chemical and surface characteristics, recent studies using alternative substrates, and new strategies to improve of production, beyond their specificities. We focus in providing recent developments and trends in biotechnological process and medical and industrial applications.
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Affiliation(s)
- Bruno Nicolau Paulino
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil.
| | - Marina Gabriel Pessôa
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil
| | - Mario Cezar Rodrigues Mano
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil
| | - Gustavo Molina
- Institute of Science and Technology, Food Engineering, UFVJM, Diamantina, Minas Gerais, Brazil
| | - Iramaia Angélica Neri-Numa
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil
| | - Glaucia Maria Pastore
- Laboratory of Bioflavors and Bioactive Compounds, Department of Food Science, Faculty of Food Engineering, University of Campinas, Cidade Universitária "Zeferino Vaz" Barão Geraldo - Campinas, São Paulo, CEP 13083-862, Brazil
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Genome Sequence of Rhodococcus sp. Strain PML026, a Trehalolipid Biosurfactant Producer and Biodegrader of Oil and Alkanes. GENOME ANNOUNCEMENTS 2015; 3:3/3/e00433-15. [PMID: 25953162 PMCID: PMC4424313 DOI: 10.1128/genomea.00433-15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Rhodococcus sp. strain PML026 produces an array of trehalolipid biosurfactant compounds in order to utilize hydrophobic carbon sources, such as oils and alkanes. Here, we report the high-quality draft genome sequence of this strain, which has a total length of 5,168,404 bp containing 4,835 protein-coding sequences, 12 rRNAs, and 45 tRNAs.
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Andersen KK, Otzen DE. Denaturation of α-lactalbumin and myoglobin by the anionic biosurfactant rhamnolipid. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1844:2338-45. [DOI: 10.1016/j.bbapap.2014.10.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 09/30/2014] [Accepted: 10/07/2014] [Indexed: 11/26/2022]
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Wan ZL, Wang LY, Wang JM, Yuan Y, Yang XQ. Synergistic foaming and surface properties of a weakly interacting mixture of soy glycinin and biosurfactant stevioside. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:6834-43. [PMID: 24955775 DOI: 10.1021/jf502027u] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The adsorption of the mixtures of soy glycinin (11S) with a biosurfactant stevioside (STE) at the air-water interface was studied to understand its relation with foaming properties. A combination of several techniques such as dynamic surface tension, dilatational rheology, fluorescence spectroscopy, and isothermal titration calorimetry (ITC) was used. In the presence of intermediate STE concentrations (0.25-0.5%), the weak binding of STE with 11S in bulk occurred by hydrophobic interactions, which could induce conformational changes of 11S, as evidenced by fluorescence and ITC. Accordingly, the strong synergy in reducing surface tension and the plateau in surface elasticity for mixed 11S-STE layers formed from the weakly interacting mixtures were clearly observed. This effect could be explained by the complexation with STE, which might facilitate the partial dissociation and further unfolding of 11S upon adsorption, thus enhancing the protein-protein and protein-STE interfacial interactions. These surface properties were positively reflected in foams produced by the weakly interacting system, which exhibited good foaming capacity and considerable stability probably due to better response to external stresses. However, at high STE concentrations (1-2%), as a consequence of the interface dominated by STE due to the preferential adsorption of STE molecules, the surface elasticity of layers dramatically decreased, and the resultant foams became less stable.
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Affiliation(s)
- Zhi-Li Wan
- Research and Development Center of Food Proteins, Department of Food Science and Technology, South China University of Technology , Guangzhou 510640, People's Republic of China
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Zaragoza A, Teruel JA, Aranda FJ, Ortiz A. Interaction of a trehalose lipid biosurfactant produced by Rhodococcus erythropolis 51T7 with a secretory phospholipase A2. J Colloid Interface Sci 2013; 408:132-7. [DOI: 10.1016/j.jcis.2013.06.073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 06/27/2013] [Accepted: 06/29/2013] [Indexed: 11/16/2022]
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Wu G, Jiang X, Zhou L, Yang L, Wang Y, Xia G, Chen Z, Duan M. The bilateral action between EQ14-2-14 gemini surfactant and bovine serum albumin by DPI and 1H NMR. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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White DA, Hird LC, Ali ST. Production and characterization of a trehalolipid biosurfactant produced by the novel marine bacterium Rhodococcus sp., strain PML026. J Appl Microbiol 2013; 115:744-55. [PMID: 23789786 DOI: 10.1111/jam.12287] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/13/2013] [Accepted: 06/16/2013] [Indexed: 11/30/2022]
Abstract
AIMS The aim of this study was to evaluate biosurfactant production by a novel marine Rhodococcus sp., strain PML026 and characterize the chemical nature and properties of the biosurfactant. METHODS AND RESULTS A novel marine bacterium (Rhodococcus species; strain PML026) was shown to produce biosurfactant in the presence of hydrophobic substrate (sunflower oil). Biosurfactant production (identified as a trehalolipid) was monitored in whole-batch cultures (oil layer and aqueous phase), aqueous phase (no oil layer) and filtered (0·2 μm) aqueous phase (no oil or cells; extracellular) and was shown to be closely associated with growth/biomass production. Extracellular trehalolipid levels increased postonset of stationary growth phase. Purified trehalolipid was able to reduce the surface tension of water to 29 mN m(-1) at Critical Micellar Concentration (CMC) of c. 250 mg l(-1) and produced emulsions that were stable to a wide range of conditions (pH 2-10, temperatures of 20-100°C and NaCl concentrations of 5-25% w/v). Separate chemical analyses of the intact trehalolipid and its constituents demonstrated the compound was in fact a mixture of homologues (>1180 MW) consisting of a trehalose moiety esterified to a series of straight chain and hydroxylated fatty acids. CONCLUSIONS The trehalolipid biosurfactant produced by the novel marine strain Rhodococcus sp. PML026 was characterized and exhibited high surfactant activity under a wide range of conditions. SIGNIFICANCE AND IMPACT OF STUDY Strain PML026 of Rhodococcus sp. is a potential candidate for bioremediation or biosurfactant production for various applications.
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Affiliation(s)
- D A White
- Plymouth Marine Laboratory, Plymouth, Devon, UK.
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