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Song C, Guo N, Xue A, Jia C, Shi W, Liu M, Zhang M, Qin J. Self-assembled thymol-betaine co-crystals with controlled release and hygroscopic properties as green preservatives for aflatoxin prevention. Food Chem 2024; 456:140037. [PMID: 38870801 DOI: 10.1016/j.foodchem.2024.140037] [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: 04/23/2024] [Revised: 05/18/2024] [Accepted: 06/07/2024] [Indexed: 06/15/2024]
Abstract
Mycotoxins are representative contaminants causing food losses and food safety problems worldwide. Thymol can effectively inhibit pathogen infestation and aflatoxin accumulation during grain storage, but high volatility limits its application. Here, a thymol-betaine co-crystal system was synthesized through grinding-induced self-assembly. The THY-TMG co-crystal exhibited excellent thermal stability with melting point of 91.2 °C owing to abundant intermolecular interactions. Remarkably, after 15 days at 30 °C, the release rate of thymol from co-crystal was only 55%, far surpassing that of pure thymol. Notably, the co-crystal demonstrated the ability to bind H2O in the environment while controlling the release of thymol, essentially acting as a desiccant. Moreover, the co-crystals effectively inhibited the growth of Aspergillus flavus and the biosynthesis of aflatoxin B1. In practical terms, the THY-TMG co-crystal was successful in preventing AFB1 contamination and nutrients loss in peanuts, thereby prolonging their shelf-life under conditions of 28 °C and 70% RH.
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Affiliation(s)
- Chenggang Song
- College of Plant Science, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases/Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, China; College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Na Guo
- College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Aoran Xue
- College of Plant Science, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases/Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, China
| | - Chengguo Jia
- College of Plant Science, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases/Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, China
| | - Wuliang Shi
- College of Plant Science, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases/Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, China
| | - Mingyuan Liu
- College of Plant Science, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases/Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, China
| | - Mingzhe Zhang
- College of Plant Science, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases/Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, China.
| | - Jianchun Qin
- College of Plant Science, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases/Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, China.
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2
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Acquavia MA, Bonomo MG, Bianco G, Salzano G, Gaeta C, Iannece P, Di Capua A, Giuzio F, Saturnino C. New piperazine and morpholine derivatives: Mass spectrometry characterization and evaluation of their antimicrobial activity. J Pharm Biomed Anal 2024; 246:116202. [PMID: 38820833 DOI: 10.1016/j.jpba.2024.116202] [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: 01/30/2024] [Revised: 04/26/2024] [Accepted: 05/03/2024] [Indexed: 06/02/2024]
Abstract
Recently, pharmaceutical research has been focused on the design of new antibacterial drugs with higher selectivity towards several strains. Major issues concern the possibility to obtain compounds with fewer side effects, at the same time effectively overcoming the problem of antimicrobial resistance. Several solutions include the synthesis of new pharmacophores starting from piperazine or morpholine core units. Mass spectrometry-based techniques offer important support for the structural characterization of newly synthesized compounds to design safer and more effective drugs for various medical conditions. Here, two new piperazine derivatives and four new morpholine derivatives were synthesized and structurally characterized through a combined approach of Fourier transform-ion cyclotron resonance (FT-ICR) and Linear Trap Quadrupole (LTQ) mass spectrometry. The support of both high-resolution and low-resolution mass spectrometric data namely accurate mass measurements, isotopic distribution and MSn spectra, was crucial to confirm the success of the synthesis. These compounds were further evaluated for inhibitory activity against a total of twenty-nine Gram-positive and Gram-negative bacteria to determine the action spectrum and the antimicrobial effectiveness. Results demonstrated compounds' antimicrobial activity against many tested bacterial species, providing an inhibitory effect linked to different chemical structure and suggesting that the new-synthesized derivatives could be considered as promising antimicrobial agents.
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Affiliation(s)
- Maria Assunta Acquavia
- Università degli Studi della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, Potenza, Italy
| | - Maria Grazia Bonomo
- Università degli Studi della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, Potenza, Italy; Spinoff TNcKILLERS, Viale Dell'Ateneo Lucano 10, Potenza 85100, Italy.
| | - Giuliana Bianco
- Università degli Studi della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, Potenza, Italy
| | - Giovanni Salzano
- Università degli Studi della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, Potenza, Italy; Spinoff TNcKILLERS, Viale Dell'Ateneo Lucano 10, Potenza 85100, Italy
| | - Carmine Gaeta
- Università degli Studi di Salerno, Dipartimento di Chimica e Biologia, Via Giovanni Paolo II 132, Fisciano, Italy
| | - Patrizia Iannece
- Università degli Studi di Salerno, Dipartimento di Chimica e Biologia, Via Giovanni Paolo II 132, Fisciano, Italy
| | - Angela Di Capua
- Università degli Studi della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, Potenza, Italy.
| | - Federica Giuzio
- Università degli Studi della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, Potenza, Italy; Spinoff TNcKILLERS, Viale Dell'Ateneo Lucano 10, Potenza 85100, Italy
| | - Carmela Saturnino
- Università degli Studi della Basilicata, Dipartimento di Scienze, Viale dell'Ateneo Lucano 10, Potenza, Italy
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Geppert-Rybczyńska M, Mrozek-Wilczkiewicz A, Rawicka P, Bartczak P. A Study of the Micellar Formation of N-Alkyl Betaine Ethyl Ester Chlorides Based on the Physicochemical Properties of Their Aqueous Solutions. Molecules 2024; 29:1844. [PMID: 38675666 PMCID: PMC11053790 DOI: 10.3390/molecules29081844] [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: 03/15/2024] [Revised: 04/14/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
In this study, a series of four surface-active compounds-N-alkyl betaine ethyl ester chlorides, CnBetC2Cl-were synthesized and characterized in aqueous solutions. As with other alkyl betaines, these amphiphiles can be practically used, for example, as co-surfactants and/or solubility enhancers acting according to hydrotropic or micellar mechanisms, depending on the alkyl chain length in the amine. We focused on the representatives of the medium alkyl chain length (C6-C12) to find the dependence between the alkyl chain length in N-alkyl betaine ethyl ester chlorides and the surface, volumetric, acoustic, and viscometric properties of their solutions. Ethyl esters, the derivatives of amino acids, were chosen to increase functionality and take advantage of possible hydrolysis in solutions at higher pH, which is also a key parameter in biodegradability. The micellization parameters were calculated based on the physicochemical characteristics. We focused our interest on the ester with a dodecyl substituent since we can compare and discuss its properties with some other C12 representatives that are available in literature. Surprisingly, its micellization characteristic is almost temperature-independent in the investigated temperature range, t = (15-45) °C. Particularly interesting are the results of dynamic light scattering (DLS), which show that the changes in physicochemical parameters of the C12 homolog around the CMC are caused by the two types of micelles of different sizes present in solutions.
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Affiliation(s)
| | - Anna Mrozek-Wilczkiewicz
- August Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland; (A.M.-W.); (P.R.)
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Patrycja Rawicka
- August Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland; (A.M.-W.); (P.R.)
| | - Piotr Bartczak
- Centre for Materials and Drug Discovery, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland;
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Kobus M, Friedrich T, Zorn E, Burmeister N, Maison W. Medicinal Chemistry of Drugs with N-Oxide Functionalities. J Med Chem 2024; 67:5168-5184. [PMID: 38549449 PMCID: PMC11017254 DOI: 10.1021/acs.jmedchem.4c00254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/08/2024] [Accepted: 03/21/2024] [Indexed: 04/12/2024]
Abstract
Molecules with N-oxide functionalities are omnipresent in nature and play an important role in Medicinal Chemistry. They are synthetic or biosynthetic intermediates, prodrugs, drugs, or polymers for applications in drug development and surface engineering. Typically, the N-oxide group is critical for biomedical applications of these molecules. It may provide water solubility or decrease membrane permeability or immunogenicity. In other cases, the N-oxide has a special redox reactivity which is important for drug targeting and/or cytotoxicity. Many of the underlying mechanisms have only recently been discovered, and the number of applications of N-oxides in the healthcare field is rapidly growing. This Perspective article gives a short summary of the properties of N-oxides and their synthesis. It also provides a discussion of current applications of N-oxides in the biomedical field and explains the basic molecular mechanisms responsible for their biological activity.
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Affiliation(s)
- Michelle Kobus
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Timo Friedrich
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Eilika Zorn
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Nils Burmeister
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Wolfgang Maison
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
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Zhou Z, Zhang X, Zeng S, Xu Y, Nie W, Zhou Y, Chen P. Quaternary ammonium salts for water treatment with balanced rate of sterilization and degradation. CHEMOSPHERE 2024; 352:141386. [PMID: 38316276 DOI: 10.1016/j.chemosphere.2024.141386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 01/06/2024] [Accepted: 02/03/2024] [Indexed: 02/07/2024]
Abstract
The growing number of infections caused by drug-resistant bacteria which arise from the overuse of antibiotics has severely affected the normal operation of human society. The high antibacterial activity of QAS makes it promising as an alternative to antibiotics, but it suffers from secondary pollution due to its non-degradation. Here we have synthesized a class of gemini quaternary ammonium salts (GQAS) with different carbon chain lengths containing ester groups by using facile methylation reaction. Quaternary ammonium groups contribute to insert negatively charged bacterial membranes, resulting in membrane damage and bacteria death. Compared with conventional single-chain QAS, except for the more efficient antibacterial efficiency attribute to the presence of the second carbon chain, GQAS with alterable antibacterial properties can minimize the possibility of bacterial resistance and reduce the accumulation of GQAS in the environment through the introduction of degradable ester groups. GQAS is completely superior to the commercial bactericide benzalkonium chloride (BAC) in both antibacterial activity and degrade performance, which can be used as a more environmentally friendly bactericide.
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Affiliation(s)
- Zhenyang Zhou
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei, 230601, China.
| | - XiRan Zhang
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei, 230601, China.
| | - Shaohua Zeng
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei, 230601, China.
| | - Ying Xu
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei, 230601, China.
| | - Wangyan Nie
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei, 230601, China.
| | - Yifeng Zhou
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei, 230601, China.
| | - Pengpeng Chen
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei, 230601, China.
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Pala M, Castelein MG, Dewaele C, Roelants SLKW, Soetaert WK, Stevens CV. Tuning the antimicrobial activity of microbial glycolipid biosurfactants through chemical modification. Front Bioeng Biotechnol 2024; 12:1347185. [PMID: 38419728 PMCID: PMC10900251 DOI: 10.3389/fbioe.2024.1347185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/30/2024] [Indexed: 03/02/2024] Open
Abstract
Sophorolipids, glycolipid biosurfactants derived from microorganisms such as Starmerella bombicola, possess distinctive surface-active and bioactive properties, holding potential applications in cosmetics, pharmaceuticals and bioremediation. However, the limited structural variability in wild-type sophorolipids restricts their properties and applications. To address this, metabolic engineering efforts have allowed to create a portfolio of molecules. In this study, we went one step further by chemically modifying microbially produced sophorosides, produced by an engineered S. bombicola. Twenty-four new sophoroside derivatives were synthesized, including sophoroside amines with varying alkyl chain lengths (ethyl to octadecyl) on the nitrogen atom and their corresponding quaternary ammonium salts. Additionally, six different microbially produced glycolipid biosurfactants were hydrogenated to achieve fully saturated lipid tails. These derivatives, along with microbially produced glycolipids and three benchmark biosurfactants (di-rhamnolipids, alkyl polyglucosides, cocamidopropyl betaine), were assessed for antimicrobial activity against bacteria (Bacillus subtilis, Staphylococcus aureus, Listeria monocytogenes, Escherichia coli, Pseudomonas aeruginosa) and yeast (Candida albicans). Results indicated that microbially produced glycolipids, such as bola sophorosides, acidic sophorolipids and acidic glucolipids exhibit selective antimicrobial activity against the test organisms. Conversely, lactonic sophorolipids, sophoroside amines and quaternary ammonium salts display a broad antimicrobial activity. N-octyl, N-dodecyl and N-octadecyl derivatives exhibit the lowest minimal inhibitory concentrations, ranging from 0.014 to 20.0 mg mL-1. This study demonstrates the potential synergy of thoughtful biotechnology and targeted chemistry to precisely tailor glycolipid biosurfactants to meet specific requirements across applications.
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Affiliation(s)
- Melike Pala
- SynBioC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Martijn G. Castelein
- Department of Biotechnology, Centre for Industrial Biotechnology and Biocatalysis (InBio.be), Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Camille Dewaele
- Department of Biotechnology, Centre for Industrial Biotechnology and Biocatalysis (InBio.be), Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Sophie L. K. W. Roelants
- Department of Biotechnology, Centre for Industrial Biotechnology and Biocatalysis (InBio.be), Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- Bio Base Europe Pilot Plant (BBEPP), Ghent, Belgium
| | - Wim K. Soetaert
- Department of Biotechnology, Centre for Industrial Biotechnology and Biocatalysis (InBio.be), Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- Bio Base Europe Pilot Plant (BBEPP), Ghent, Belgium
| | - Christian V. Stevens
- SynBioC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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Zhong D, Cheng H, Liu H, Feng S, Liu Y, Xiang H, Chen J. Bibliometric analysis of Traditional Chinese Medicine nanoparticles research from 2005 to 2023. Electrophoresis 2024; 45:288-299. [PMID: 37909469 DOI: 10.1002/elps.202300207] [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: 09/19/2023] [Accepted: 10/16/2023] [Indexed: 11/03/2023]
Abstract
To gain a deeper understanding of the current status of research on Traditional Chinese Medicine (TCM) and nanoparticles, we conducted a bibliometric study. We conducted a literature search in the Web of Science (WOS) for publications related to TCM and nanoparticles from 1992 to 2023. The data, including countries of publication, research institutions, journals, citations, and keywords, were analyzed using the Bibliometrix R-4.0 software package. We performed an analysis to identify the co-occurrence of keywords in the documents including their titles and abstracts. From 2005 to 2023, a total of 309 publications were included, with an average annual growth rate of 4.25%. The majority of these publications were published in Q1 journals (72, 47.06%) and Q2 journals (45, 29.41%). Among the 309 publications, 22 articles (7.12%) had an impact factor greater than 10, while 78 articles (25.24%) had an impact factor greater than 5. The analysis of international collaboration networks revealed limited international cooperation, with most collaborations occurring between institutions in China, the United States, and Australia. These 309 publications involved a total of 438 research institutions, with Chinese research institutions being the most prolific contributors. In this study, a total of 309 publications were included, comprising 1142 author keywords and 1175 keywords plus. Factor analysis of the 1175 keywords plus revealed that they could be grouped into five categories: one category included terms such as "oxide" and "zinc," another category included terms like "lipid" and "acid," a third category included terms such as "improve" and "enhance," a fourth category included terms like "silica" and "mesoporous," and the fifth category included terms like "PLGA" and "immune." Research on nanoparticles in TCM has been gradually gaining popularity. Currently, most of the research in this field is conducted in China, with limited international collaboration. The majority of TCM nanoparticle research focuses on individual herbal compounds, while research on nanoparticle formulations of traditional herbal prescriptions is relatively scarce.
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Affiliation(s)
- Dayuan Zhong
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong, P. R. China
| | - Hui Cheng
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong, P. R. China
- Institute of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong, P. R. China
| | - Huixian Liu
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong, P. R. China
- Post-graduate Institute, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, P. R. China
| | - Shihui Feng
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong, P. R. China
- Institute of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong, P. R. China
| | - Yumei Liu
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong, P. R. China
- Institute of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong, P. R. China
| | - Huier Xiang
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong, P. R. China
- Institute of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong, P. R. China
| | - Jiaqi Chen
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong, P. R. China
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Experimental Study of the Rheology of Cellulose Nanocrystals-enhanced C22-tailed Zwitterionic Wormlike Micelles. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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Zhou Z, Zhou S, Zhang X, Zeng S, Xu Y, Nie W, Zhou Y, Xu T, Chen P. Quaternary Ammonium Salts: Insights into Synthesis and New Directions in Antibacterial Applications. Bioconjug Chem 2023; 34:302-325. [PMID: 36748912 DOI: 10.1021/acs.bioconjchem.2c00598] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The overuse of antibiotics has led to the emergence of a large number of antibiotic-resistant genes in bacteria, and increasing evidence indicates that a fungicide with an antibacterial mechanism different from that of antibiotics is needed. Quaternary ammonium salts (QASs) are a biparental substance with good antibacterial properties that kills bacteria through simple electrostatic adsorption and insertion into cell membranes/altering of cell membrane permeability. Therefore, the probability of bacteria developing drug resistance is greatly reduced. In this review, we focus on the synthesis and application of single-chain QASs, double-chain QASs, heterocyclic QASs, and gemini QASs (GQASs). Some possible structure-function relationships of QASs are also summarized. As such, we hope this review will provide insight for researchers to explore more applications of QASs in the field of antimicrobials with the aim of developing systems for clinical applications.
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Affiliation(s)
- Zhenyang Zhou
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Shuguang Zhou
- Department of Gynecology, Anhui Province Maternity and Child Healthcare Hospital, Hefei, Anhui 236000, China
| | - Xiran Zhang
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Shaohua Zeng
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Ying Xu
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Wangyan Nie
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Yifeng Zhou
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Tao Xu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Pengpeng Chen
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
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Soliman SA, Khaleil MM, Metwally RA. Evaluation of the Antifungal Activity of Bacillusamyloliquefaciens and B. velezensis and Characterization of the Bioactive Secondary Metabolites Produced against Plant Pathogenic Fungi. BIOLOGY 2022; 11:biology11101390. [PMID: 36290294 PMCID: PMC9599029 DOI: 10.3390/biology11101390] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/17/2022] [Accepted: 09/20/2022] [Indexed: 04/21/2023]
Abstract
Endophytic bacteria are plant-beneficial bacteria with a broad host range. They provide numerous benefits to their hosts, helping them tolerate several biotic and abiotic stresses. An interest has recently been developed in endophytic bacteria which are producing bioactive compounds that contribute to the biological control of various phytopathogens. This research paper aimed to investigate the potentiality of new local strains of endophytic bacteria such as Bacillus amyloliquefaciens and B. velezensis and the production of several antimicrobial metabolites associated with the biocontrol of Alternaria sp., which cause serious diseases and affect important vegetable crops in Egypt. Twenty-five endophytic bacteria isolates were obtained from different plants cultivated in El-Sharkia Governorate, Egypt. Dual culture technique was used to evaluate the bacterial isolates' antagonistic potentiality against Alternaria sp. and Helminthosporium sp. The most active bacterial isolates obtained were selected for further screening. The antifungal activity of the most active endophytic bacterial isolate was assessed in vivo on pepper seedlings as a biocontrol agent against Alternaria sp. A significant antifungal activity was recorded with isolates C1 and T5 against Alternaria sp. and Helminthosporium sp. The bacterial endophyte discs of C1 and T5 showed the highest inhibitory effect against Alternaria sp. at 4.7 and 3.1 cm, respectively, and Helminthosporium sp. at 3.9 and 4.0 cm, respectively. The most active endophytic isolates C1 and T5 were identified and the 16S rRNA sequence was submitted to the NCBI GenBank database with accession numbers: MZ945930 and MZ945929 for Bacillus amyloliquefaciens and Bacillus velezensis, respectively. The deformity of pathogenic fungal mycelia of Alternaria sp. and Helminthosporium sp. was studied under the biotic stress of bacteria. The culture filtrates of B. amyloliquefaciens and B. velezensis were extracted with different solvents, and the results indicated that hexane was the most efficient. Gas Chromatography-Mass Spectrometry revealed that Bis (2-ethylhexyl) phthalate, Bis (2-ethylhexyl) ester, and N,N-Dimethyldodecylamine were major constituents of the endophytic crude extracts obtained from B. amyloliquefaciens and B. velezensis. The in vivo results showed that Alternaria sp. infection caused the highest disease incidence, leading to a high reduction in plant height and in the fresh and dry weights of pepper plants. With B. amyloliquefaciens application, DI significantly diminished compared to Alternaria sp. infected pepper plants, resulting in an increase in their morphological parameters. Our findings allow for a reduction of chemical pesticide use and the control of some important plant diseases.
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Affiliation(s)
- Shereen A. Soliman
- Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
| | - Mona M. Khaleil
- Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
- Biology Department, Faculty of Science, Taibah University, Yanbu El-Bahr 46429, Saudi Arabia
| | - Rabab A. Metwally
- Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
- Correspondence: ; Tel.: +20-101-625-9372; Fax: +20-055-320-8213
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11
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Butler CSG, Giles LW, Sokolova AV, de Campo L, Tabor RF, Tuck KL. Structure-Performance Relationships for Tail Substituted Zwitterionic Betaine-Azobenzene Surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7522-7534. [PMID: 35678153 DOI: 10.1021/acs.langmuir.2c00523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Azobenzene-containing surfactants (azo-surfactants) have garnered significant attention for their use in generating photoresponsive foams, interfaces, and colloidal systems. The photoresponsive behavior of azo-surfactants is driven by the conformational and electronic changes that occur when the azobenzene chromophore undergoes light-induced trans ⇌ cis isomerization. Effective design of surfactants and targeting of their properties requires a robust understanding of how the azobenzene functionality interacts with surfactant structure and influences overall surfactant behavior. Herein, a library of tail substituted azo-surfactants were synthesized and studied to better understand how surfactant structure can be tailored to exploit the azobenzene photoswitch. This work shows that tail group structure (length and branching) has a profound influence on the critical micelle concentration of azo-surfactants and their properties once adsorbed to an air-water interface. Neutron scattering studies revealed the unique role that intermolecular π-π azobenzene interactions have on the self-assembly of azo-surfactants, and how the influence of these interactions can be tuned using tail group structure to target specific aqueous aggregate morphologies.
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Affiliation(s)
- Calum S G Butler
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Luke W Giles
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Anna V Sokolova
- Australian Centre for Neutron Scattering, ANSTO, Lucas Heights, New South Wales 2234, Australia
| | - Liliana de Campo
- Australian Centre for Neutron Scattering, ANSTO, Lucas Heights, New South Wales 2234, Australia
| | - Rico F Tabor
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Kellie L Tuck
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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12
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Antistaphylococcal Activities and ADME-Related Properties of Chlorinated Arylcarbamoylnaphthalenylcarbamates. Pharmaceuticals (Basel) 2022; 15:ph15060715. [PMID: 35745634 PMCID: PMC9228535 DOI: 10.3390/ph15060715] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 05/29/2022] [Accepted: 06/02/2022] [Indexed: 02/01/2023] Open
Abstract
Pattern 1-hydroxy-N-(2,4,5-trichlorophenyl)-2-naphthamide and the thirteen original carbamates derived from it were prepared and characterized. All the compounds were tested against Staphylococcus aureus ATCC 29213 as a reference and quality control strain and in addition against three clinical isolates of methicillin-resistant S. aureus (MRSA). Moreover, the compounds were evaluated against Enterococcus faecalis ATCC 29212, and preliminary in vitro cytotoxicity of the compounds was assessed using the human monocytic leukemia cell line (THP-1). The lipophilicity of the prepared compounds was experimentally determined and correlated with biological activity. While pattern anilide had no antibacterial activity, the prepared carbamates demonstrated high antistaphylococcal activity comparable to the used standards (ampicillin and ciprofloxacin), which unfortunately were ineffective against E. feacalis. 2-[(2,4,5-Trichlorophenyl)carba- moyl]naphthalen-1-yl ethylcarbamate (2) and 2-[(2,4,5-trichlorophenyl)carbamoyl]naphthalen-1-yl butylcarbamate (4) expressed the nanomolar minimum inhibitory concentrations (MICs 0.018−0.064 μM) against S. aureus and at least two other MRSA isolates. Microbicidal effects based on the minimum bactericidal concentrations (MBCs) against all the tested staphylococci were found for nine carbamates, while 2-[(2,4,5-trichlorophenyl)carbamoyl]naphthalen-1-yl heptylcarbamate (7) and 2-[(2,4,5-trichlorophenyl)carbamoyl]naphthalen-1-yl (4-phenylbutyl)carbamate (14) demonstrated MBCs in the range of 0.124−0.461 μM. The selectivity index (SI) for most investigated carbamates was >20 and for some derivatives even >100. The performed tests did not show an effect on the damage to the bacterial membrane, while the compounds were able to inhibit the respiratory chain of S. aureus.
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13
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Babamale HF, Khor BK, Chear NJY, Haque RA, Yam W. The First tetrafluorinated azobenzene-imidazolium ionic conjugates as potential thermotropic liquid crystalline drugs: Self-assembly properties and cytotoxic effects. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132470] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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14
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Santra HK, Banerjee D. Bioactivity study and metabolic profiling of Colletotrichum alatae LCS1, an endophyte of club moss Lycopodium clavatum L. PLoS One 2022; 17:e0267302. [PMID: 35482744 PMCID: PMC9049576 DOI: 10.1371/journal.pone.0267302] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 04/06/2022] [Indexed: 01/23/2023] Open
Abstract
Endophytes are silent microbial partners of green plants that ensure hosts' survival in odd conditions. They are known as the factories of multipotent metabolites with diverse bioactivities beneficial to modern pharmaceuticals industry. Endophytic fungi have been screened from a variety of plants and it is the first-time endophytes of club moss is being studied for production of antibacterial and antioxidative compounds. The present study reveals that Lycopodium clavatum L. harbors a potent niche of bioactive endophytic fungi and Colletotrichum alatae LCS1 was the prime producer of antibacterial and antioxidative compounds among them. The minimum inhibitory and bactericidal concentrations of ethyl- acetate culture extract ranged from 15.62 to 250 μg/mL against four Gram negative and three Gram positive microorganisms including methicillin resistant Staphylococcus aureus (ATCC-33591). Bio-autogram based screening followed by Gas chromatographic analysis confirmed the occurrence of 17 bioactive compounds and α-bisabolol is known to be the prime one. Alfa bisabolol is a unique and versatile bioactive essential oil and facilitates variety of functions. Killing kinetics data along with leakage of macromolecules into extracellular environment supports the cidal activity of the antibacterial principles at MBC values. Isolate C. alatae LCS1 was optimized by one variable at a time system coupled with response surface methodology for broad spectrum antibacterial production. The organism yielded maximum response (22.66±0.894 mm of zone of inhibition against MRSA) in 250 mL Erlenmeyer flask containing 50 mL potato dextrose broth supplemented with (g/L) glucose, 7.53; yeast extract concentration, 0.47; NaCl, 0.10 with medium pH 6.46; after 134 hours of incubation at 26°C. Optimized fermentation parameters enhanced antibacterial activity up-to more than 50% than the pre-optimized one (10.33±0.57 mm). Endophytic LCS1 was also efficient in free radical scavenging tested by DPPH, ABTS, H2O2 and FRAP assay with an IC50 values of 23.38±5.32 to 82.873±6.479 μg/mL.
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Affiliation(s)
- Hiran Kanti Santra
- Microbiology and Microbial Biotechnology Laboratory, Department of Botany and Forestry, Vidyasagar University, Midnapore, West Bengal, India
| | - Debdulal Banerjee
- Microbiology and Microbial Biotechnology Laboratory, Department of Botany and Forestry, Vidyasagar University, Midnapore, West Bengal, India
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Elsaba YM, Boroujerdi A, Abdelsalam A. Isolation, Characterization, and Metabolic Profiling of Ceratorhiza hydrophila from the Aquatic Plant Myriophyllum spicatum. MYCOBIOLOGY 2022; 50:110-120. [PMID: 35571857 PMCID: PMC9068000 DOI: 10.1080/12298093.2022.2059889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 03/25/2022] [Accepted: 03/26/2022] [Indexed: 06/15/2023]
Abstract
The goal of the present study was to investigate the antibacterial properties, enzyme production, and metabolic profiling of a new Ceratorhiza hydrophila strain isolated from the submerged aquatic plant Myriophyllum spicatum. Furthermore, the fungus' morphological characterization and DNA sequencing have been described. The fungus has been identified and submitted to the GenBank as Ceratorhiza hydrophila isolate EG19 and the fungus ID is MK387081. The enzyme analyses showed its ability to produce protease and cellulase enzymes. According to the CSLI standard, the ethyl acetate extract of C. hydrophila showed intermediate antibacterial activity against Streptococcus pneumonia, Micrococcus luteus, and Staphylococcus aureus. Metabolic profiling has been carried out using 700 MHz NMR spectroscopy. Based on the 1H and 1H-13C heteronuclear single quantum coherence (HSQC) NMR data and NMR databases, 23 compounds have been identified. The identified metabolites include 31% amino acids, 9% sugars, 9% amines, 4% sugar alcohols, and 4% alkaloids. This is the first report for the metabolic characterization of C. hydrophila, which gave preliminary information about the fungus. It is expected that our findings not only will pave the way to other perspectives in enormous applications using C. hydrophila as a new promising source of antimicrobial agents and essential metabolites, but also it will be valuable in the classification and chemotaxonomy of the species.
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Affiliation(s)
- Yasmin M. Elsaba
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo, Egypt
| | | | - Asmaa Abdelsalam
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo, Egypt
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16
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Battista S, Bellio P, Fagnani L, Allegritti E, Nazzicone L, Galantini L, Celenza G, Giansanti L. Structurally Related Liposomes Containing N-Oxide Surfactants: Physicochemical Properties and Evaluation of Antimicrobial Activity in Combination with Therapeutically Available Antibiotics. Mol Pharm 2022; 19:788-797. [PMID: 35170971 PMCID: PMC8905576 DOI: 10.1021/acs.molpharmaceut.1c00609] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
![]()
Although liposomes
are largely investigated as drug delivery systems,
they can also exert a pharmacological activity if devoid of an active
principle as a function of their composition. Specifically, charged
liposomes can electrostatically interact with bacterial cells and,
in some cases, induce bacterial cell death. Moreover, they also show
a high affinity toward bacterial biofilms. We investigated the physicochemical
and antimicrobial properties of liposomes formulated with a natural
phospholipid and four synthetic l-prolinol-derived surfactants
at 9/1 and 8/2 molar ratios. The synthetic components differ in the
nature of the polar headgroup (quaternary ammonium salt or N-oxide) and/or the length of the alkyl chain (14 or 16
methylenes). These differences allowed us to investigate the effect
of the molecular structure of liposome components on the properties
of the aggregates and their ability to interact with bacterial cells.
The antimicrobial properties of the different formulations were assessed
against Gram-negative and Gram-positive bacteria and fungi. Drug–drug
interactions with four classes of available clinical antibiotics were
evaluated against Staphylococcus spp. The target
of each class of antibiotics plays a pivotal role in exerting a synergistic
effect. Our results highlight that the liposomal formulations with
an N-oxide moiety are required for the antibacterial
activity against Gram-positive bacteria. In particular, we observed
a synergism between oxacillin and liposomes containing 20 molar percentage
of N-oxide surfactants onStaphylococcus
haemolyticus, Staphylococcus epidermidis, andStaphylococcus aureus. In the
case of liposomes containing 20 molar percentage of the N-oxide surfactant with 14 carbon atoms in the alkyl chain for S. epidermidis, the minimum inhibitory concentration
was 0.125 μg/mL, well below the breakpoint value of the antibiotic.
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Affiliation(s)
- Sara Battista
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Pierangelo Bellio
- Dipartimento di Scienze Chimiche Applicate e Biotecnologie, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Lorenza Fagnani
- Dipartimento di Scienze Chimiche Applicate e Biotecnologie, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Elena Allegritti
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Lisaurora Nazzicone
- Dipartimento di Scienze Chimiche Applicate e Biotecnologie, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Luciano Galantini
- Dipartimento di Chimica, Università degli Studi di Roma "Sapienza", P.le A. Moro 5, 00185 Roma, Italy
| | - Giuseppe Celenza
- Dipartimento di Scienze Chimiche Applicate e Biotecnologie, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
| | - Luisa Giansanti
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito, AQ, Italy
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17
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Kalasariya HS, Patel NB, Yadav A, Perveen K, Yadav VK, Munshi FM, Yadav KK, Alam S, Jung YK, Jeon BH. Characterization of Fatty Acids, Polysaccharides, Amino Acids, and Minerals in Marine Macroalga Chaetomorpha crassa and Evaluation of Their Potentials in Skin Cosmetics. Molecules 2021; 26:molecules26247515. [PMID: 34946597 PMCID: PMC8706032 DOI: 10.3390/molecules26247515] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/18/2021] [Accepted: 11/26/2021] [Indexed: 11/16/2022] Open
Abstract
Cosmetic industries are highly committed to finding natural sources of functional active constituents preferable to safer materials to meet consumers' demands. Marine macroalgae have diversified bioactive constituents and possess potential benefits in beauty care products. Hence, the present study was carried out to characterize the biochemical profile of marine macroalga Chaetomorpha crassa by using different techniques for revealing its cosmetic potentials. In results, the FTIR study characterized the presence of different bioactive functional groups that are responsible for many skin-beneficial compounds whereas six and fifteen different important phycocompounds were found in GCMS analysis of ethanolic and methanolic extracts, respectively. In the saccharide profile of C. crassa, a total of eight different carbohydrate derivatives were determined by the HRLCMS Q-TOF technique, which showed wide varieties of cosmetic interest. In ICP AES analysis, Si was found to be highest whereas Cu was found to be lowest among other elements. A total of twenty-one amino acids were measured by the HRLCMS-QTOF technique, which revealed the highest amount of the amino acid, Aspartic acid (1207.45 nmol/mL) and tyrosine (106.77 nmol/mL) was found to be the lowest in amount among other amino acids. Their cosmetic potentials have been studied based on previous research studies. The incorporation of seaweed-based bioactive components in cosmetics has been extensively growing due to its skin health-promoting effects.
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Affiliation(s)
- Haresh S. Kalasariya
- Microbiology Department, Sankalchand Patel University, Visnagar 384315, India; (H.S.K.); (N.B.P.)
| | - Nikunj B. Patel
- Microbiology Department, Sankalchand Patel University, Visnagar 384315, India; (H.S.K.); (N.B.P.)
| | - Akanksha Yadav
- Department of Home Science, Institute of Science, MMV, Banaras Hindu University, Varanasi 221005, India;
| | - Kahkashan Perveen
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh 11495, Saudi Arabia;
| | - Virendra Kumar Yadav
- School of Sciences, P P Savani University, NH 8, GETCO, Near Biltech, Village, Dhamdod, Kosamba 394125, India;
| | - Faris M. Munshi
- Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia; (F.M.M.); (S.A.)
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Ratibad, Bhopal 462044, India;
| | - Shamshad Alam
- Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia; (F.M.M.); (S.A.)
| | - You-Kyung Jung
- Department of Chemistry, Yonsei University, Wonju 26493, Korea;
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Korea
- Correspondence:
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18
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Bis-Thiourea Quaternary Ammonium Salts as Potential Agents against Bacterial Strains from Food and Environmental Matrices. Antibiotics (Basel) 2021; 10:antibiotics10121466. [PMID: 34943678 PMCID: PMC8698647 DOI: 10.3390/antibiotics10121466] [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: 10/29/2021] [Revised: 11/17/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022] Open
Abstract
In recent years, the phenomenon of antibiotic resistance in hospitals, communities and the environment has increasingly grown, so antibiotic resistance has become an urgent problem that requires a decisive and global intervention. Incorrect/unnecessary use of antibiotics contributes to increase the ability of microorganisms to develop resistance faster and faster. Research efforts must, therefore, be made to ensure a future in which antibiotic drugs will still be useful in combating infectious diseases. The search for new antibacterial compounds is fundamental. In this study, the antimicrobial activity of the compounds was evaluated against selected bacterial strains from food and environmental matrices by using the Agar Well Diffusion Assay. A total of thirty-six Gram-positive and Gram-negative bacteria were employed to determine the action spectrum and the antimicrobial effectiveness of a small series of thiourea derivatives. Results showed that the highest activities were found for compounds 1 and 4. The important role of the alkyl chain length and/or guanidine moiety in the width of action spectrum was evidenced. Further studies will allow evaluating the efficacy of the inhibiting action and the molecular mechanisms underlying this activity in order to identify compounds capable of counteracting the phenomenon of antibiotic resistance and to identify possible future applications of these newly synthesized compounds that have shown a high bactericidal action potential.
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19
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Beil S, Markiewicz M, Pereira CS, Stepnowski P, Thöming J, Stolte S. Toward the Proactive Design of Sustainable Chemicals: Ionic Liquids as a Prime Example. Chem Rev 2021; 121:13132-13173. [PMID: 34523909 DOI: 10.1021/acs.chemrev.0c01265] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The tailorable and often unique properties of ionic liquids (ILs) drive their implementation into a broad variety of seminal technologies. The modular design of ILs allows in this context a proactive selection of structures that favor environmental sustainability─ideally without compromising their technological performance. To achieve this objective, the whole life cycle must be taken into account and various aspects considered simultaneously. In this review, we discuss how the structural design of ILs affects their environmental impacts throughout all stages of their life cycles and scrutinize the available data in order to point out knowledge gaps that need further research activities. The design of more sustainable ILs starts with the selection of the most beneficial precursors and synthesis routes, takes their technical properties and application specific performance into due account, and considers its environmental fate particularly in terms of their (eco)toxicity, biotic and abiotic degradability, mobility, and bioaccumulation potential. Special emphasis is placed on reported structure-activity relationships and suggested mechanisms on a molecular level that might rationalize the empirically found design criteria.
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Affiliation(s)
- Stephan Beil
- Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Marta Markiewicz
- Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Cristina Silva Pereira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Av. da República, 2780-157 Oeiras, Portugal
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Jorg Thöming
- Chemical Process Engineering, University of Bremen, Leobener Straße 6, 28359 Bremen, Germany
| | - Stefan Stolte
- Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany
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20
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Heads or tails? The synthesis, self-assembly, properties and uses of betaine and betaine-like surfactants. Adv Colloid Interface Sci 2021; 297:102528. [PMID: 34655932 DOI: 10.1016/j.cis.2021.102528] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/23/2021] [Accepted: 09/25/2021] [Indexed: 11/23/2022]
Abstract
Betaines are a key class of zwitterionic surfactant that exhibit particularly favorable properties, making them indispensable in modern formulation. Due to their composition, betaines are readily biodegradable, mild on the skin and exhibit some antimicrobial activity. Vital to their function, these surfactants self-assemble into diverse micellar geometries, some of which contribute to increased solution viscosity, and their surface activity results in strong detergency and foaming. As such, their behavior has been exploited in various applications from personal care (including shampoos and liquid soaps) to specific industrial fields (such as enhanced oil recovery). This review aims to inform the reader of the diverse range of different betaine and betaine-like surfactants that have been actively researched over the past three decades. Synthesis as well as both chemical and physical characterization of betaine surfactants are discussed, including small-angle scattering studies that indicate self-assembly structures and rheological data that demonstrates texture and flow. Stimulus responsive systems and exotic betaine analogs with enhanced functionality are also covered. Crucially, the connection between surfactant molecular architecture and function are highlighted, exemplifying precisely why zwitterionic betaine and related surfactants are so uniquely functional.
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21
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Cyclic and Acyclic Amine Oxide Alkyl Derivatives as Potential Adjuvants in Antimicrobial Chemotherapy against Methicillin-Resistant Staphylococcus aureus with an MDR Profile. Antibiotics (Basel) 2021; 10:antibiotics10080952. [PMID: 34439002 PMCID: PMC8388947 DOI: 10.3390/antibiotics10080952] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 11/16/2022] Open
Abstract
The dramatic intensification of antimicrobial resistance occurrence in pathogenic bacteria concerns the global community. The revitalisation of inactive antibiotics is, at present, the only way to go through this health system crisis and the use of antimicrobial adjuvants is turning out the most promising approach. Due to their low toxicity, eco-friendly characteristics and antimicrobial activity, amphoteric surfactants are good candidates. This study investigated the adjuvant potentialities of commercial acyclic and newly cyclic N-oxide surfactants combined with therapeutically available antibiotics against MDR methicillin-resistant Staphylococcus aureus (MRSA). The safety profile of the new cyclic compounds, compared to commercial surfactants, was preliminarily assessed, evaluating the cytotoxicity on human peripheral mononuclear blood cells and the haemolysis in human red blood cells. The compounds show an efficacious antimicrobial activity strongly related to the length of the carbon atom chain. In drug–drug interaction assays, all surfactants act synergistically, restoring sensitivity to oxacillin in MRSA, with dodecyl acyclic and cyclic derivatives being the most effective. After evaluating the cytotoxicity and considering the antimicrobial action, the most promising compound is the L-prolinol amine-oxide C12NOX. These findings suggest that the combination of antibiotics with amphoteric surfactants is a valuable therapeutic option for topical infections sustained by multidrug-resistant S. aureus.
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22
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Synthesis and characterization of azobenzene derivatives and azobenzene-imidazolium conjugates with selective antimicrobial potential. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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23
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Synthesis and Correlation of Aggregation and Antimicrobial Properties of Homochiral Quaternary Ammonium Bromides Derived from Camphoric Acid. EUROPEAN PHARMACEUTICAL JOURNAL 2021. [DOI: 10.2478/afpuc-2020-0017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
A group of homochiral quaternary ammonium salts bearing hydrophobic camphoric acid-derived moiety was synthesized and characterized. The aggregation properties of the prepared compounds were evaluated by surface tension measurements, and the critical micelle concentration (CMC) was calculated. The novel quaternary ammonium bromides were tested as antimicrobial and antifungal agents, and their minimal inhibitory concentration (MIC) was evaluated and compared to clinically used benzalkonium bromide (BAB). Correlation of MIC with CMC reveals that monomers of prepared cationic surfactants, instead of micelles, are primarily responsible for antimicrobial activity.
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24
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Luo YH, Lai YS, Zheng C, Ilhan ZE, Ontiveros-Valencia A, Long X, Krajmalnik-Brown R, Rittmann BE. Increased expression of antibiotic-resistance genes in biofilm communities upon exposure to cetyltrimethylammonium bromide (CTAB) and other stress conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 765:144264. [PMID: 33418325 DOI: 10.1016/j.scitotenv.2020.144264] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/12/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
Quaternary ammonium compounds (QAC, e.g., cetyltrimethylammonium bromide, (CTAB)) are widely used as surfactants and disinfectants. QAC already are commonly found in wastewaters, and their concentration could increase, since QAC are recommended to inactivate the SARS-CoV-2 (COVID-19) virus. Exposure of bacteria to QAC can lead to proliferation of antibiotic resistance genes (ARG). In particular, O2-based membrane biofilm reactors (O2-MBfRs) achieved excellent CTAB biodegradation, but ARG increased in their biofilms. Here, we applied meta-transcriptomic analyses to assess the impacts of CTAB exposure and operating conditions on microbial community's composition and ARG expression in the O2-MBfRs. Two opportunistic pathogens, Pseudomonas aeruginosa and Stenotrophomonas maltophilia, dominated the microbial communities and were associated with the presence of ARG. Operating conditions that imposed stress on the biofilms, i.e., limited supplies of O2 and nitrogen or a high loading of CTAB, led to large increases in ARG expression, particularly for genes conferring antibiotic-target protection. Important within the efflux pumps was the Resistance-Nodulation-Division (RND) family, which may have been active in exporting CTAB from cells. Oxidative stress appeared to be the key factor that triggered ARG proliferation by selecting intrinsically resistant species and accentuating the expression of ARG. Our findings suggest that means to mitigate the spread of ARG, such as shown here in a O2-based membrane biofilm reactor, need to consider the impacts of stressors, including QAC exposure and stressful operating conditions.
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Affiliation(s)
- Yi-Hao Luo
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA
| | - YenJung Sean Lai
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA.
| | - Chenwei Zheng
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA
| | - Zehra Esra Ilhan
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA; INRAE, Micalis Institute, Université Paris-Saclay, AgroParisTech, 78350 Jouy-en-Josas, France
| | - Aura Ontiveros-Valencia
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA; Division de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, Camino a la Presa de San José 2055, ZC 78216 San Luis Potosí, Mexico
| | - Xiangxing Long
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA; Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-5306, USA
| | - Rosa Krajmalnik-Brown
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA
| | - Bruce E Rittmann
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA
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Rahimov RA, Ahmadova GA, Hashimzade SF, Imanov E, Khasiyev HG, Karimova NK, Zubkov FI. Surface and Biocidal Properties of Gemini Cationic Surfactants Based on Propoxylated 1,6‐Diaminohexane and Alkyl Bromides. J SURFACTANTS DETERG 2021. [DOI: 10.1002/jsde.12506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ravan A. Rahimov
- Department of Chemical Engineering Baku Engineering University Hasan Aliyev Str. 120, Baku Absheron AZ 0101 Azerbaijan
- Institute of Petrochemical Processes of Azerbaijan National Academy of Sciences Hojaly Ave. 30 Baku AZ 1025 Azerbaijan
| | - Gulnara A. Ahmadova
- Institute of Petrochemical Processes of Azerbaijan National Academy of Sciences Hojaly Ave. 30 Baku AZ 1025 Azerbaijan
| | - Seyid‐Zeynab F. Hashimzade
- Institute of Petrochemical Processes of Azerbaijan National Academy of Sciences Hojaly Ave. 30 Baku AZ 1025 Azerbaijan
| | - Elmar Imanov
- Department of Chemistry and Biology Baku Engineering University Hasan Aliyev Str. 120, Baku Absheron AZ 0101 Azerbaijan
| | - Hajibala G. Khasiyev
- Department of Chemical Engineering Baku Engineering University Hasan Aliyev Str. 120, Baku Absheron AZ 0101 Azerbaijan
| | - Nazani K. Karimova
- Department of Chemical Engineering Baku Engineering University Hasan Aliyev Str. 120, Baku Absheron AZ 0101 Azerbaijan
| | - Fedor I. Zubkov
- Organic Chemistry Department, Faculty of Science Peoples' Friendship University of Russia (RUDN University) 6 Miklukho‐Maklaya St. Moscow 117198 Russian Federation
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26
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Amide Gemini surfactants linked by rigid spacer group 1,4-dibromo-2-butene: Surface properties, aggregate and application properties. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115339] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Bacterial Endotoxin Testing-Fast Endotoxin Masking Kinetics in the Presence of Lauryldimethylamine Oxide. Microorganisms 2020; 8:microorganisms8111728. [PMID: 33158205 PMCID: PMC7694283 DOI: 10.3390/microorganisms8111728] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 10/30/2020] [Accepted: 10/30/2020] [Indexed: 11/17/2022] Open
Abstract
For release of parenteral drug products, bacterial endotoxin testing is one of a panel of necessary tests. In order to ensure the validity of such tests, various controls are performed, including demonstration of compendial method suitability or method qualification. In addition to compendial suitability testing, quality control (QC) sample hold-time studies are requested by authorities like the Food and Drug Administration (FDA) as described in “Guidance for Industry: Pyrogen and Endotoxins Testing.” It is requested to be determine whether the ability to detect endotoxins can be affected by storage and handling of the sample to be tested. To accomplish these studies, endotoxin is introduced or spiked into the undiluted product and held for a certain period of time in process-representative containers. This time period reflects procedural maximum QC sample hold time from sampling until analysis. Inadequate detection of endotoxin can be caused by adsorption of endotoxin to container surfaces or molecular masking effects, in which the binding sites on the endotoxin molecules are prevented from triggering the enzymatic cascade necessary in the assay, are obscured. The endotoxin may form macromolecular structures, such as sheets or blebs, or the binding sites may otherwise be rendered unavailable due to the sample matrix composition. In either case, the endotoxin assay may yield falsely low results if and when masking occurs. In this work, the QC sample hold times of different in-process controls within the production process of a biopharmaceutical product were analyzed. One out of eight different samples showed a strong masking of endotoxin. Analysis of the sample composition revealed that either kifunensine, mycophenolic acid (MPA), or lauryl-N, N-dimethylamine oxide (LDAO) was responsible for masking. Further analysis clearly identified LDAO as the root cause for masking. A novel one-step mechanism for LDAO-induced endotoxin masking is proposed. The principle is similar to an already-proposed two-step mechanism for endotoxin masking, but the LDAO case combines these two steps: the disturbance of the salt bridges and hydrophobic interactions with LPS in one molecule. These molecular interactions occur quickly when both endotoxin and LDAO are present in the same matrix. Thus, depending on the masking agents, low endotoxin recovery (LER) can occur regardless of the QC sample hold duration.
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Salishcheva O, Prosekov A. Antimicrobial activity of mono- and polynuclear platinum and palladium complexes. FOODS AND RAW MATERIALS 2020. [DOI: 10.21603/2308-4057-2020-2-298-311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Introduction. Infectious diseases remain a serious threat to humanity worldwide as bacterial pathogens grow more diverse. Bacteria, fungi, and parasites develop resistance to clinically approved antimicrobials, which reduces the efficacy of available drugs and treatment measures. As a result, there is an ever growing demand for new highly effective pharmaceuticals. This review describes mono- and polynuclear platinum and palladium complexes with antimicrobial properties. We compared several groups of antibacterial agents: antibiotics, antioxidant biologically active substances, antimicrobial nanoparticles, nanocomposite materials, biopolymers, micellar systems, and plant extracts.
Study objects and methods. The review covered relevant articles published in Web of Science, Scopus, and Russian Science Citation Index for the last decade. The list of descriptors included such terms as mononuclear and binuclear complexes of platinum, palladium, and antimicrobial activity.
Results and discussion. Chelates of platinum, palladium, silver, iridium, rhodium, ruthenium, cobalt, and nickel are popular therapeutic agents. Their antimicrobial activity against pathogenic microorganisms can be enhanced by increasing their bioavailability. Metalbased drugs facilitate the transport of organic ligands towards the bacterial cell. The nature of the ligand and its coordination change the thermodynamic stability, kinetic lability, and lipophilic properties of the complex, as well as the reactivity of the central atom. Polynuclear platinum and palladium complexes contain two or more bound metal (coordinate) centers. Covalent bonding with bacterial DNA enables them to form a type of DNA adducts, which is completely different from that of mononuclear complexes.
Conclusion. Metal-based drugs with functional monodentate ligands exhibit a greater antimicrobial effect compared to free ligands. Poly- and heteronuclear complexes can increase the number of active centers that block the action of bacterial cells. When combined with other antibacterial agents, they provide a synergistic effect, which makes them a promising subject of further research.
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29
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Pisárčik M, Lukáč M, Jampílek J, Bilka F, Bilková A, Pašková Ľ, Devínsky F, Horáková R, Opravil T. Phosphonium surfactant stabilised silver nanoparticles. Correlation of surfactant structure with physical properties and biological activity of silver nanoparticles. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Fong R, Squillace O, Reynolds CD, Cooper JFK, Dalgliesh RM, Tellam J, Courchay F, Thompson RL. Segregation of Amine Oxide Surfactants in PVA Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4795-4807. [PMID: 32271588 PMCID: PMC7304907 DOI: 10.1021/acs.langmuir.0c00084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/08/2020] [Indexed: 06/11/2023]
Abstract
The vertical depth distributions of amine oxide surfactants, N,N-dimethyldodecyl amine N-oxide (DDAO) and N,N-dimethyltetradecyl amine N-oxide (DTAO), in poly(vinyl alcohol) (PVA) films were explored using neutron reflectometry (NR). In both binary and plasticized films, the two deuterated surfactants formed a single monolayer on the film surface with the remaining surfactant homogeneously distributed throughout the bulk of the film. Small-angle neutron scattering and mechanical testing revealed that these surfactants acted like plasticizers in the bulk, occupying the amorphous regions of PVA and reducing its glass-transition temperature. NR revealed little impact of plasticizer (glycerol) incorporation on the behavior of these surfactants in PVA. The surfactant molecular area in the segregated monolayer was smaller for DTAO than for DDAO, indicating that the larger molecule was more densely packed at the surface. Surface tension was used to assess the solution behavior of these surfactants and the effect of glycerol incorporation. Determination of molecular area of each surfactant on the solution surface revealed that the structures of the surface monolayers are remarkably consistent when water is placed by the solid PVA. Incorporation of glycerol caused a decrease of molecular area for DDAO and increase in molecular area for DTAO both in solution and in PVA. This suggests that the head group interactions, which normally limit the minimum area per adsorbed molecule, are modified by the length of the alkyl tail.
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Affiliation(s)
- Rebecca
J. Fong
- Department
of Chemistry, Durham University, Science Site, Durham DH1
3LE, United Kingdom
- Procter
& Gamble, Newcastle Innovation Centre, Whitley Road, Newcastle-upon-Tyne, NE12 9TS, United Kingdom
| | - Ophélie Squillace
- Department
of Chemistry, Durham University, Science Site, Durham DH1
3LE, United Kingdom
- School
of Chemical Engineering, University of Birmingham, SW Campus, Birmingham B15 2TT, United
Kingdom
| | - Carl D. Reynolds
- Department
of Chemistry, Durham University, Science Site, Durham DH1
3LE, United Kingdom
- School
of Chemistry, University of Birmingham, University Road West, Birmingham B15 2TT, United Kingdom
| | | | - Robert M. Dalgliesh
- ISIS Neutron
and Muon Source, Rutherford Appleton Laboratories, Chilton, Didcot, OX11
0QX, United Kingdom
| | - James Tellam
- Rutherford
Appleton Laboratories, Chilton, Didcot, OX11 0QX, United
Kingdom
| | - Florence Courchay
- Procter
& Gamble, Brussels Innovation Center, Temselaan 100, 1853 Strombeek Bever, Brussels, Belgium
| | - Richard L. Thompson
- Department
of Chemistry, Durham University, Science Site, Durham DH1
3LE, United Kingdom
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31
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Design and synthesis of amphiphilic 2-hydroxybenzylphosphonium salts with antimicrobial and antitumor dual action. Bioorg Med Chem Lett 2020; 30:127234. [PMID: 32386856 DOI: 10.1016/j.bmcl.2020.127234] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/23/2020] [Accepted: 04/28/2020] [Indexed: 01/23/2023]
Abstract
Here we report the synthesis and biological evaluation of a series of new 2-hydroxybenzylphosphonium salts (QPS) with antimicrobial and antitumor dual action. The most active compounds exhibit antimicrobial activity at a micromolar level against Gram-positive bacteria Sa (ATCC 209p and clinical isolates), Bc (1-2 μM) and fungi Tm and Ca, and induced no notable hemolysis at MIC. The change in nature of substituents of the same length led to a drastic change of biological activity. Self-assembly behavior of the octadecyl and oleyl derivatives was studied. QPS demonstrated self-assembly within the micromolar range with the formation of nanosized aggregates capable of the solubilizing hydrophobic probe. The synthesized phosphonium salts were tested for cytotoxicity. The most potent salt was active against on M-Hela cell line with IC50 on the level of doxorubicin and good selectivity. According to the cytofluorimetry analysis, the salts induced mitochondria-dependent apoptosis.
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32
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Wieczorek D, Kwaśniewska D, Hsu LH, Shen TL, Chen YL. Antifungal Activity of Morpholine and Piperidine Based Surfactants. TENSIDE SURFACT DET 2020. [DOI: 10.3139/113.110667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Microorganisms have the remarkable capacity to develop resistance to antimicrobial agents. This is of particular concern for fungal pathogens which cause devastating invasive infections with limited treatment options. Thus the need for new antifungal agents is undeniable. This work presents the antifungal properties of four surfactant groups, namely two groups of sulfobetaines and two groups of quaternary ammonium compounds, all morpholine and piperidine derivatives, against drug susceptible or drug resistant Candida albicans and Cryptococcus neoformans. The values of minimum inhibitory and fungicidal concentrations were determined. As follows from the results, the activities of the obtained compounds differed, however the most active agents from each homologous series of compounds, such as P16S3, P16S4 and C16S3, were pointed out.
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Affiliation(s)
- Daria Wieczorek
- Department of Technology and Instrumental Analysis , Faculty of Commodity Science, Poznan , Poland
| | - Dobrawa Kwaśniewska
- Department of Technology and Instrumental Analysis , Faculty of Commodity Science, Poznan , Poland
| | - Li-Hang Hsu
- Department of Plant Pathology and Microbiology , National Taiwan University, Taipei , Taiwan
| | - Tang-Long Shen
- Department of Plant Pathology and Microbiology , National Taiwan University, Taipei , Taiwan
| | - Ying-Lien Chen
- Department of Plant Pathology and Microbiology , National Taiwan University, Taipei , Taiwan
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33
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Mokhtar A, Bennabi F, Abdelkrim S, Sardi A, Boukoussa B, Souna A, Bengueddach A, Sassi M. Evaluation of intercalated layered materials as an antimicrobial and drug delivery system: a comparative study. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-00978-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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34
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Lamch Ł, Witek K, Jarek E, Obłąk E, Warszyński P, Wilk KA. New mild amphoteric sulfohydroxybetaine-type surfactants containing different labile spacers: Synthesis, surface properties and performance. J Colloid Interface Sci 2020; 558:220-229. [DOI: 10.1016/j.jcis.2019.09.100] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/25/2019] [Accepted: 09/26/2019] [Indexed: 12/17/2022]
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35
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Choo KB, Lee SM, Lee WL, Cheow YL. Synthesis, characterization, in vitro antimicrobial and anticancer studies of new platinum N-heterocyclic carbene (NHC) complexes and unexpected nickel complexes. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.07.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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36
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Hasan HA, Abdulmalek E, Saleh TA, Abdul Rahman MB, Shaari KB, Yamin BM, Chan KW. Synthesis of novel 6-substituted-5,6-Dihydrobenzo[4,5] Imidazo[1,2-c] quinazoline compounds and evaluation of their properties. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.111] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Asadov ZH, Ahmadova GA, Rahimov RA, Hashimzade SZF, Nasibova SM, Ismailov EH, Suleymanova SA, Muradova SA, Asadova NZ, Zubkov FI. Surface properties and premicellar aggregation behavior of cationic gemini surfactants with mono- and di-(2-hydroxypropyl)ammonium head groups. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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Do E, Lee HG, Park M, Cho YJ, Kim DH, Park SH, Eun D, Park T, An S, Jung WH. Antifungal Mechanism of Action of Lauryl Betaine Against Skin-Associated Fungus Malassezia restricta. MYCOBIOLOGY 2019; 47:242-249. [PMID: 31448144 PMCID: PMC6691833 DOI: 10.1080/12298093.2019.1625175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/21/2019] [Accepted: 05/24/2019] [Indexed: 06/10/2023]
Abstract
Betaine derivatives are considered major ingredients of shampoos and are commonly used as antistatic and viscosity-increasing agents. Several studies have also suggested that betaine derivatives can be used as antimicrobial agents. However, the antifungal activity and mechanism of action of betaine derivatives have not yet been fully understood. In this study, we investigated the antifungal activity of six betaine derivatives against Malassezia restricta, which is the most frequently isolated fungus from the human skin and is implicated in the development of dandruff. We found that, among the six betaine derivatives, lauryl betaine showed the most potent antifungal activity. The mechanism of action of lauryl betaine was studied mainly using another phylogenetically close model fungal organism, Cryptococcus neoformans, because of a lack of available genetic manipulation and functional genomics tools for M. restricta. Our genome-wide reverse genetic screening method using the C. neoformans gene deletion mutant library showed that the mutants with mutations in genes for cell membrane synthesis and integrity, particularly ergosterol synthesis, are highly sensitive to lauryl betaine. Furthermore, transcriptome changes in both C. neoformans and M. restricta cells grown in the presence of lauryl betaine were analyzed and the results indicated that the compound mainly affected cell membrane synthesis, particularly ergosterol synthesis. Overall, our data demonstrated that lauryl betaine influences ergosterol synthesis in C. neoformans and that the compound exerts a similar mechanism of action on M. restricta.
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Affiliation(s)
- Eunsoo Do
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Hyun Gee Lee
- Safety Research Institute, Amorepacific R&D Center, Yongin, Korea
| | - Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | | | - Dong Hyeun Kim
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Se-Ho Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
| | - Daekyung Eun
- Safety Research Institute, Amorepacific R&D Center, Yongin, Korea
| | - Taehun Park
- Safety Research Institute, Amorepacific R&D Center, Yongin, Korea
| | - Susun An
- Safety Research Institute, Amorepacific R&D Center, Yongin, Korea
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Korea
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39
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Lou H, He X, Cai C, Lan T, Pang Y, Zhou H, Qiu X. Enhancement and Mechanism of a Lignin Amphoteric Surfactant on the Production of Cellulosic Ethanol from a High-Solid Corncob Residue. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6248-6256. [PMID: 31090409 DOI: 10.1021/acs.jafc.9b01208] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A lignin amphoteric surfactant and betaine could enhance the enzymatic hydrolysis of lignocellulose and recover cellulase. The effects of lignosulfonate quaternary ammonium salt (SLQA) and dodecyl dimethyl betaine (BS12) on enzymatic hydrolysis digestibility, ethanol yield, yeast cell viability, and other properties of high-solid enzymatic hydrolysis and fermentation of a corncob residue were studied in this research. The results suggested that SLQA and 1 g/L BS12 effectively improved the ethanol yield through enhancing enzymatic hydrolysis. SLQA had no significant effect on the yeast cell membrane and glucose fermentation. However, 5 g/L BS12 reduced the ethanol yield as a result of the fact that 5 g/L BS12 damaged the yeast cell membrane and inhibited the conversion of glucose to ethanol. Our research also suggested that 1 g/L BS12 enhanced the ethanol yield of corncob residue fermentation, which was attributed to the fact that lignin in the corncob adsorbed BS12 and decreased its concentration in solution to a safe level for the yeast.
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Affiliation(s)
| | | | | | - Tianqing Lan
- Yunnan Institute of Food Safety , Kunming University of Science and Technology , Kunming , Yunnan 650500 , People's Republic of China
| | | | - Haifeng Zhou
- College of Chemical and Environmental Engineering, Key Laboratory of Low Carbon Energy and Chemical Engineering , Shandong University of Science and Technology , Qingdao , Shandong 277590 , People's Republic of China
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40
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Falk NA. Surfactants as Antimicrobials: A Brief Overview of Microbial Interfacial Chemistry and Surfactant Antimicrobial Activity. J SURFACTANTS DETERG 2019; 22:1119-1127. [PMID: 32336911 PMCID: PMC7166552 DOI: 10.1002/jsde.12293] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 04/23/2019] [Indexed: 11/06/2022]
Abstract
In this brief overview of a large and complex subject, as presented at the 2018 Surfactants in Solution conference, the need for, and impact of, hard surface antimicrobial products is demonstrated. The composition of the interfaces of three common classes of pathological microbes, bacteria, viruses, and fungi, is discussed so that surfactant and cleaning product development scientists better understand their interfacial characteristics. Studies of antimicrobial efficacy from the four major classes of surfactants (cationic, anionic, amphoteric, and nonionic) are shown. The need for preservatives in surfactants is elucidated. The regulatory aspects of antimicrobials in cleaning products to make antimicrobial claims are stressed.
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Affiliation(s)
- Nancy A Falk
- Clorox Services Company 4900 Johnson Drive, Pleasanton CA 94588 USA
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41
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Development and validation of an analytical procedure for quantitation of surfactants in dishwashing detergents using ultra-performance liquid chromatography-mass spectrometry. Talanta 2019; 194:778-785. [DOI: 10.1016/j.talanta.2018.10.084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 11/18/2022]
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42
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Trush M, Metelytsia L, Semenyuta I, Kalashnikova L, Papeykin O, Venger I, Tarasyuk O, Bodachivska L, Blagodatnyi V, Rogalsky S. Reduced ecotoxicity and improved biodegradability of cationic biocides based on ester-functionalized pyridinium ionic liquids. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:4878-4889. [PMID: 30569361 DOI: 10.1007/s11356-018-3924-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Accepted: 12/04/2018] [Indexed: 06/09/2023]
Abstract
Ester-functionalized pyridinium ionic liquids (ILs), 1-decyloxycarbonylmethylpyridinium chloride (PyrСOOC10-Cl), and 1-dodecyloxycarbonylmethylpyridinium chloride (PyrСOOC12-Cl) have been synthesized and studied for their environmental toxicity. Simple long-chain pyridinium ILs, 1-dodecylpyridinium chloride (PyrC12-Cl), and commercial disinfectant cetylpyridinium chloride (CPC) were used as reference compounds. Both ester-functionalized ILs and CPC showed significantly reduced antibacterial activity compared to PyrC12-Cl. However, ester-functionalized ILs were found to have excellent antifungal activity towards Candida albicans fungus strains, similar to PyrC12-Cl and much higher than for CPC. The molecular docking of ILs in the active site of the known antifungal target N-myristoyltransferase (Nmt) C. albicans has been conducted. The obtained results indicate the possibility of ILs binding into the Nmt pocket. The high stability of the complexes, especially for PyrCOOC10-Cl, is ensured by hydrogen bonding, electrostatic anion-pi interactions, as well as hydrophobic pi-alkyl and alkyl interactions that was confirmed by calculated binding energy values. The acute toxicity studies of ester-functionalized ILs on D. rerio (zebrafish) hydrobiont have shown their dramatically reduced ecotoxicity compared to PyrC12-Cl and CPC. Thus, LD50 values of 15.2 mg/L and 16.8 mg/L were obtained for PyrCOOC10-Cl and PyrCOOC12-Cl, respectively, whereas CPC had LD50 value of 0.018 mg/L. The primary biodegradation test CEC L-33-A93 of ILs indicated an improved biodegradability of ester-functionalized compounds compared to simple long-chain ILs. Based on the obtained results, PyrCOOC10-Cl may be considered as very promising cationic biocide due to the combination of soft antimicrobial activity and reduced ecotoxicity, as well as improved biodegradability.
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Affiliation(s)
- Maria Trush
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine
| | - Larysa Metelytsia
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine
| | - Ivan Semenyuta
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine
| | - Larysa Kalashnikova
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine
| | - Oleksiy Papeykin
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine
| | - Irina Venger
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine
| | - Oksana Tarasyuk
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine
| | - Larysa Bodachivska
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine
| | - Volodymyr Blagodatnyi
- Shupyk National Medical Academy of Postgraduate Education, 9, Dorogozhytska Str., Kyiv, 04112, Ukraine
| | - Sergiy Rogalsky
- V. P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of National Academy of Science of Ukraine, 1, Murmanska Str., Kyiv, 02660, Ukraine.
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43
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Blankenburg J, Stark M, Frey H. Oxidation-responsive polyether block copolymers lead to non-ionic polymer surfactants with multiple amine N-oxides. Polym Chem 2019. [DOI: 10.1039/c9py00093c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidation of tertiary amines leads to multiple amine N-oxide moieties and a highly polar polyether structure. Combination with the apolar poly(propylene oxide) affords unusual surfactants.
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Affiliation(s)
- Jan Blankenburg
- Institute of Organic Chemistry
- Johannes Gutenberg University
- 55128 Mainz
- Germany
- Graduate School Materials Science in Mainz
| | - Martin Stark
- Institute of Organic Chemistry
- Johannes Gutenberg University
- 55128 Mainz
- Germany
| | - Holger Frey
- Institute of Organic Chemistry
- Johannes Gutenberg University
- 55128 Mainz
- Germany
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44
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Fritz B, Jenner A, Wahl S, Lappe C, Zehender A, Horn C, Blessing F, Kohl M, Ziemssen F, Egert M. A view to a kill? - Ambient bacterial load of frames and lenses of spectacles and evaluation of different cleaning methods. PLoS One 2018; 13:e0207238. [PMID: 30485312 PMCID: PMC6261565 DOI: 10.1371/journal.pone.0207238] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 10/27/2018] [Indexed: 01/31/2023] Open
Abstract
Surfaces with regular contact with the human body are typically contaminated with microorganisms and might be considered as fomites. Despite spectacles being widespread across populations, little is known about their microbial contamination. Therefore, we swab-sampled 11 worn spectacles within a university setting as well as 10 worn spectacles in a nursing home setting. The microbial load was determined by aerobic cultivation. All spectacles were found to be contaminated with bacteria, with nose pads and ear clips having the highest density, i.e. at sites with direct skin contact. Summed over all sites, the median microbial load of the university spectacles (1.4 ± 10.7 x 10(3) CFU cm-2) did not differ significantly from the spectacles tested in the nursing home (20.8 ± 39.9 x 10(3) CFU cm-2). 215 dominant bacterial morphotypes were analyzed by MALDI biotyping. 182 isolates could be assigned to 10 genera, with Staphylococcus being the most common. On genus-level, bacterial diversity was greater on nursing home spectacles (10 genera) compared to the university environment (2 genera). Four cleaning methods were investigated using lenses artificially contaminated with Escherichia coli, Micrococcus luteus, a 1:2 mixture of E. coli and M. luteus, and Staphylococcus epidermidis (the dominant isolate in our study), respectively. Best cleaning results (99% -100% median germ reduction) were obtained using impregnated wipes; dry cleaning was less effective (85% -90% median germ reduction). Finally, 10 additional worn university spectacles were cleaned with wipes impregnated with an alcohol-free cleaning solution before sampling. The average bacterial load was significantly lower (0.09 ± 0.49 x 10(3) CFU cm-2) compared to the uncleaned university spectacles previously investigated. Spectacles are significantly contaminated with bacteria of mostly human skin origin-including significant amounts of potentially pathogenic ones and may contribute to eye infections as well as fomites in clinical environments.
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Affiliation(s)
- Birgit Fritz
- Faculty of Medical and Life Sciences, Institute of Precision Medicine, Microbiology and Hygiene Group, Furtwangen University, Villingen-Schwenningen, Germany
| | - Anne Jenner
- Faculty of Medical and Life Sciences, Institute of Precision Medicine, Microbiology and Hygiene Group, Furtwangen University, Villingen-Schwenningen, Germany
- Carl Zeiss Vision International GmbH, Aalen, Germany
| | - Siegfried Wahl
- Carl Zeiss Vision International GmbH, Aalen, Germany
- Institute for Ophthalmic Research, University of Tuebingen, Tuebingen, Germany
| | | | | | | | | | - Matthias Kohl
- Faculty of Medical and Life Sciences, Institute of Precision Medicine, Group for Statistics in Biology and Medicine, Furtwangen University, Villingen-Schwenningen, Germany
| | - Focke Ziemssen
- Center for Ophthalmology, Eberhard-Karls University, Tuebingen, Germany
| | - Markus Egert
- Faculty of Medical and Life Sciences, Institute of Precision Medicine, Microbiology and Hygiene Group, Furtwangen University, Villingen-Schwenningen, Germany
- * E-mail:
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45
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Successful amphiphiles as the key to crystallization of membrane proteins: Bridging theory and practice. Biochim Biophys Acta Gen Subj 2018; 1863:437-455. [PMID: 30419284 DOI: 10.1016/j.bbagen.2018.11.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 10/31/2018] [Accepted: 11/07/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND Membrane proteins constitute a major group of proteins and are of great significance as pharmaceutical targets, but underrepresented in the Protein Data Bank. Particular reasons are their low expression yields and the constant need for cautious and diligent handling in a sufficiently stable hydrophobic environment substituting for the native membrane. When it comes to protein crystallization, such an environment is often established by detergents. SCOPE OF REVIEW In this review, 475 unique membrane protein X-ray structures from the online data bank "Membrane proteins of known 3D structure" are presented with a focus on the detergents essential for protein crystallization. By systematic analysis of the most successful compounds, including current trends in amphiphile development, we provide general insights for selection and design of detergents for membrane protein crystallization. MAJOR CONCLUSIONS The most successful detergents share common features, giving rise to favorable protein interactions. The hydrophile-lipophile balance concept of well-balanced hydrophilic and hydrophobic detergent portions is still the key to successful protein crystallization. Although a single detergent compound is sufficient in most cases, sometimes a suitable mixture of detergents has to be found to alter the resulting protein-detergent complex. Protein crystals with a high diffraction limit involve a tight crystal packing generally favored by detergents with shorter alkyl chains. GENERAL SIGNIFICANCE The formation of well-diffracting membrane protein crystals strongly depends on suitable surfactants, usually screened in numerous crystallization trials. The here-presented findings provide basic criteria for the assessment of surfactants within the vast space of potential crystallization conditions for membrane proteins.
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46
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Li L, Jin Y, Zhou H, Wang H. Synthesis of zwitterionic N-chlorohydantoins for antibacterial applications. Bioorg Med Chem Lett 2018; 28:3665-3669. [PMID: 30528978 DOI: 10.1016/j.bmcl.2018.10.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/20/2018] [Accepted: 10/22/2018] [Indexed: 01/30/2023]
Abstract
Two novel zwitterionic N-chlorohydantoin biocides, containing an N-chlorohydantoin unit and a sulfobetaine unit or a carboxybetaine unit, were chemically synthesized and characterized. Using the quaternary ammonium N-chlorohydantoin as control, the antibacterial activity of synthetic zwitterionic N-chlorohydantoins was challenged and the antibacterial data showed that carboxybetaine N-chlorohydantoin exhibited distinctively higher biocidal efficacy than QA counterpart, while sulfobetaine N-chlorohydantoin displayed slightly inferior antimicrobial efficacy. Our results may inspire further exploration of more zwitterionic N-chlorohydantoin analogs for antibacterial application.
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Affiliation(s)
- Lingdong Li
- School of Petroleum and Chemical Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals, 2 Dagong Road, Liaodongwan New District, Panjin 124221, China.
| | - Yanan Jin
- School of Petroleum and Chemical Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals, 2 Dagong Road, Liaodongwan New District, Panjin 124221, China
| | - Hao Zhou
- School of Food and Environment, Dalian University of Technology, 2 Dagong Road, Liaodongwan New District, Panjin 124221, China
| | - Hande Wang
- School of Petroleum and Chemical Engineering, Dalian University of Technology, State Key Laboratory of Fine Chemicals, 2 Dagong Road, Liaodongwan New District, Panjin 124221, China
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47
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Choo KB, Mah WL, Lee SM, Lee WL, Cheow YL. Palladium complexes of bidentate pyridineN-heterocyclic carbenes: Optical resolution, antimicrobial and cytotoxicity studies. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4377] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kar Bee Choo
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Wee Li Mah
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Sui Mae Lee
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Wai Leng Lee
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
| | - Yuen Lin Cheow
- School of Science, Monash University Malaysia; Jalan Lagoon Selatan 47500 Bandar Sunway Selangor Malaysia
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48
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Stopková L, Gališinová J, Šuchtová Z, Čižmárik J, Andriamainty F. Determination of Critical Micellar Concentration of Homologous 2-Alkoxyphenylcarbamoyloxyethyl-Morpholinium Chlorides. Molecules 2018; 23:molecules23051064. [PMID: 29724070 PMCID: PMC6100405 DOI: 10.3390/molecules23051064] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/23/2018] [Accepted: 04/23/2018] [Indexed: 12/30/2022] Open
Abstract
The critical micellar concentrations of selected alkyloxy homologues of local anesthetic 4-(2-{[(2-alkoxyphenyl)carbamoyl]oxy}ethyl)morpholin-4-ium chloride with nc = 2, 4, 5, 6, 7, 8, and 9 carbons in alkyloxy tail were determined by absorption spectroscopy in the UV⁻vis spectral region with the use of a pyrene probe. Within the homologous series of the studied amphiphilic compounds, the ln(cmc) was observed to be dependent linearly on the number of carbon atoms nc in the hydrophobic tail: ln(cmc) = 0.705⁻0.966 nc. The Gibbs free energy, necessary for the transfer of the methylene group of the alkoxy chain from the water phase into the inner part of the micelle at the temperature of 25 °C and pH ≈ 4.5⁻5.0, was found to be −2.39 kJ/mol. The experimentally determined cmc values showed good correlations with the predicted values of the bulkiness of the alkoxy tail expressed as the molar volume of substituent R, as well as with the surface tension of the compounds.
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Affiliation(s)
- Lenka Stopková
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
| | - Jana Gališinová
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
| | - Zuzana Šuchtová
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
| | - Jozef Čižmárik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
| | - Fils Andriamainty
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojárov 10, 83232 Bratislava, Slovakia.
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49
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Łudzik K, Kustrzepa K, Kowalewicz-Kulbat M, Kontek R, Kontek B, Wróblewska A, Jóźwiak M, Lulo D. Antimicrobial and Cytotoxic Properties of Bisquaternary Ammonium Bromides of Different Spacer Length. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Katarzyna Łudzik
- Frank Laboratory of Neutron Physics; Joint Institute for Nuclear Research, Joliot-Curie 6, (Moscow Region); 141980 Dubna Russia
- Department of Physical Chemistry; University of Lodz, Faculty of Chemistry, Pomorska 165; Lodz 90-236 Poland
| | - Kinga Kustrzepa
- Department of Physical Chemistry; University of Lodz, Faculty of Chemistry, Pomorska 165; Lodz 90-236 Poland
| | - Magdalena Kowalewicz-Kulbat
- Faculty of Biology and Environmental Protection, Department of Immunology and Infectious Biology; University of Lodz, Banacha 12/16; 90-237 Lodz Poland
| | - Renata Kontek
- Faculty of Biology and Environmental Protection, Department of General Genetics, Molecular Biology and Biotechnology; University of Lodz, Banacha 12/16; 90-237 Lodz Poland
| | - Bogdan Kontek
- Department of General Biochemistry; University of Lodz, Faculty of Biology and Environmental Protection, Pomorska 141/143; 90-236 Lodz Poland
| | - Aneta Wróblewska
- Polish Academy of Sciences; Center of Molecular and Macromolecular Studies, Sienkiewicza 112; 90-236 Lodz Poland
| | - Małgorzata Jóźwiak
- Department of Physical Chemistry; University of Lodz, Faculty of Chemistry, Pomorska 165; Lodz 90-236 Poland
| | - Daria Lulo
- Department of Physical Chemistry; University of Lodz, Faculty of Chemistry, Pomorska 165; Lodz 90-236 Poland
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50
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Joondan N, Jhaumeer Laulloo S, Caumul P. Amino acids: Building blocks for the synthesis of greener amphiphiles. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2017.1421085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nausheen Joondan
- Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, Mauritius
| | | | - Prakashanand Caumul
- Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, Mauritius
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