DOCSLIB.ORG

Download Special Issue

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Download Special Issue BioMed Research International New Insights into and Updates on Antimicrobial Agents from Natural Products Lead Guest Editor: Chedly Chouchani Guest Editors: Taoufik Ghrairi, Sophie Jaraud, Artur Alves, Yannick Fleury, and Alladdin El Salabi New Insights into and Updates on Antimicrobial Agents from Natural Products BioMed Research International New Insights into and Updates on Antimicrobial Agents from Natural Products Lead Guest Editor: Chedly Chouchani Guest Editors: Taoufik Ghrairi, Sophie Jaraud, Artur Alves, Yannick Fleury, and Alladdin El Salabi Copyright © 2019 Hindawi. All rights reserved. This is a special issue published in “BioMed Research International.” All articles are open access articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Contents New Insights into and Updates on Antimicrobial Agents from Natural Products Taoufik Ghrairi, Sophie Jaraud, Artur Alves, Yannick Fleury, Allaeddin El Salabi, and Chedly Chouchani Editorial (3 pages), Article ID 7079864, Volume 2019 (2019) Effect of Lonicera caerulea var. emphyllocalyx Extracts on Murine Streptococcus pyogenes Infection by Modulating Immune System Masaaki Minami , Mineo Nakamura, and Toshiaki Makino Research Article (12 pages), Article ID 1797930, Volume 2019 (2019) Antimicrobial and Antibiofilm Activity against Streptococcus mutans of Individual and Mixtures of the Main Polyphenolic Compounds Found in Chilean Propolis Jorge Jesús Veloz, Marysol Alvear, and Luis A. Salazar Research Article (7 pages), Article ID 7602343, Volume 2019 (2019) Antimicrobial Characteristics of Lactic Acid Bacteria Isolated from Homemade Fermented Foods Dayong Ren , Jianwei Zhu, Shengjie Gong, Hongyan Liu, and Hansong Yu Research Article (9 pages), Article ID 5416725, Volume 2018 (2019) Peptide Extract from Olivancillaria hiatula Exhibits Broad-Spectrum Antibacterial Activity Edward Ntim Gasu , Hubert Senanu Ahor , and Lawrence Sheringham Borquaye Research Article (11 pages), Article ID 6010572, Volume 2018 (2019) Functional Probiotic Assessment and In Vivo Cholesterol-Lowering Efficacy of Weissella sp. Associated with Arid Lands Living-Hosts Imene Fhoula , Amel Rehaiem, Afef Najjari, Donatella Usai, Abdellatif Boudabous, Leonardo Antonio Sechi, and Ouzari Hadda-Imene Research Article (11 pages), Article ID 1654151, Volume 2018 (2019) Antimicrobial Fatty Acids from Green Alga Ulva rigida (Chlorophyta) Amel Ismail , Leila Ktari, Yosr Ben Redjem Romdhane, Brahim Aoun, Saloua Sadok, Abdellatif Boudabous, and Monia El Bour Research Article (12 pages), Article ID 3069595, Volume 2018 (2019) Pelargonium graveolens Aqueous Decoction: A New Water-Soluble Polysaccharide and Antioxidant-Rich Extract Malek Ennaifer , Taroub Bouzaiene, Moncef Chouaibi, and Moktar Hamdi Research Article (11 pages), Article ID 2691513, Volume 2018 (2019) Antagonism of Bacteria from Dog Dental Plaque against Human Cariogenic Bacteria Káthia Santana Martins, Lorena Tirza de Assis Magalhães, Jeferson Geison de Almeida, and Fábio Alessandro Pieri Research Article (6 pages), Article ID 2780948, Volume 2018 (2019) Enhanced Production of Polymyxin E in Paenibacillus polymyxa by Replacement of Glucose by Starch Zhiliang Yu ,ZhongqiSun,JianhuaYin ,andJuanpingQiu Research Article (10 pages), Article ID 1934309, Volume 2018 (2019) Inoculation with Efficient Nitrogen Fixing and Indoleacetic Acid Producing Bacterial Microsymbiont EnhanceToleranceoftheModelLegumeMedicago truncatula to Iron Deficiency Nadia Kallala, Wissal M’sehli, Karima Jelali, Zribi Kais, and Haythem Mhadhbi Research Article (14 pages), Article ID 9134716, Volume 2018 (2019) Evaluation of the Efficiency of Ethanol Precipitation and Ultrafiltration on the Purification and Characteristics of Exopolysaccharides Produced by Three Lactic Acid Bacteria Manel Ziadi , Taroub Bouzaiene, Sana M’Hir, Kaouther Zaafouri, Ferid Mokhtar, Mokhtar Hamdi, and Claire Boisset-Helbert Research Article (11 pages), Article ID 1896240, Volume 2018 (2019) In Vitro Antibacterial Activity of Propyl-Propane-Thiosulfinate and Propyl-Propane-Thiosulfonate Derived from Allium spp. against Gram-Negative and Gram-Positive Multidrug-Resistant Bacteria Isolated from Human Samples Antonio Sorlozano-Puerto , Maria Albertuz-Crespo, Isaac Lopez-Machado, Juan Jose Ariza-Romero, Alberto Baños-Arjona, Manuela Exposito-Ruiz, and Jose Gutierrez-Fernandez Research Article (11 pages), Article ID 7861207, Volume 2018 (2019) Effect of Ionizing Radiation on the Microbiological Safety and Phytochemical Properties of Cooked Malva sylvestris L. Issam Ben Salem, Souad Ouesleti, Mohamed Amine Khammassi, Abdennacer Boulila, and Yassine Mabrouk Research Article (8 pages), Article ID 2730713, Volume 2018 (2019) Synthesis and Evaluation of Biological Activity of New Arylphosphoramidates Amal Thebti, M. A. K. Sanhoury, H-I. Ouzari , and T. Barhoumi-slimi Research Article (7 pages), Article ID 4567019, Volume 2018 (2019) Congo Red Decolorization and Detoxification by Aspergillus niger: Removal Mechanisms and Dye Degradation Pathway Nedra Asses , Lamia Ayed, Neila Hkiri, and Moktar Hamdi Research Article (9 pages), Article ID 3049686, Volume 2018 (2019) Green Tea Catechins: Their Use in Treating and Preventing Infectious Diseases Wanda C. Reygaert ReviewArticle(9pages),ArticleID9105261,Volume2018(2019) Hindawi BioMed Research International Volume 2019, Article ID 7079864, 3 pages https://doi.org/10.1155/2019/7079864 Editorial New Insights into and Updates on Antimicrobial Agents from Natural Products Taoufik Ghrairi,1 Sophie Jaraud,2 Artur Alves,3 Yannick Fleury,4 Allaeddin El Salabi,5,6 and Chedly Chouchani 7,8 1 Laboratoire de Neurophysiologie, Physiopathologie Cellulaire et Valorisation des BioMolecules,´ Faculte´ des Sciences de Tunis, Universite´ de Tunis El-Manar, Campus Universitaire Farhat Hachad, Tunisia 2International Center for Infectiology Research (CIRI), Inserm, U1111, CNRS, UMR5308, ENS de Lyon, UniversiteClaudeBernardLyon1,69007Lyon,France´ 3Department of Biology, CESAM-Centre for Environmental and Marine Studies, University of Aveiro, Campus Universitario´ de Santiago, 3810-193 Aveiro, Portugal 4Universite´ de Bretagne Occidentale, LBCM EA, IUT Quimper, Quimper, France 5Department of Environmental Health, Faculty of Public Health, University of Benghazi, Benghazi, Libya 6Arab African Academy for Studies, Benghazi, Libya 7Universite´ de Carthage, Laboratoire de Recherche Sciences et Technologies de l’Environnement, ISSTE de Borj-Cedria, Technopoleˆ de Borj-Cedria, BP 1003, Hammam-Lif 2050, Tunisia 8Laboratoire des Microorganismes et Biomolecules´ Actives, Faculte´ des Sciences de Tunis, UniversitedeTunisElManar,´ 2098 El-Manar II, Tunisia Correspondence should be addressed to Chedly Chouchani; [email protected] Received 13 March 2019; Accepted 13 March 2019; Published 1 April 2019 Copyright © 2019 Taoufk Ghrairi et al. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Nowadays, microorganisms play a remarkable role in pro- mechanism, energy metabolism, protein synthesis, and so motion of science; it has provided a platform for young and on. established researchers to interact and learn more about the Microorganisms can be used as probiotics sources and are advanced research in microbiology. Worldwide, microorgan- defned as “live microorganisms, which, when administrated isms represent a really thoughtful subject on itself; moreover, in adequate numbers, confer a health beneft to the host”. Lac- it can contribute to the science and sustainable develop- tic acid bacteria (LAB), particularly Lactobacilli,arewidely ment. Terefore, microorganisms are usually considered as used in food production and represent the most common a drug-target. Te interactions between drugs, their target microorganisms employed as probiotics in functional foods and their respective direct efects, are generally the way [1, 2]. Te probiotic concept is gaining more attention world- to be explored. In contrast, the microorganism’s responses wide, due to the perceived benefcial efects of these bacteria to antimicrobials drug treatments that contribute to cell on human and animal health [2]. Tese microorganisms death are not as well understood and have proven to be can produce exopolysaccharides (EPS) which are long-chain quite complex, involving multiple genetic and biochemical polymers that are used industrially as thickeners, stabilizers, pathways. and gelling agents in food products. More recently, they were Furthermore, microorganisms have been used as tools used as depollution agents and there was a growing interest to explore fundamental life processes by researchers. Due to in their biological functions like antitumor, antioxidant, or some advantages (e.g., rapid growth, growth manipulation, probiotic activities [3]. Lactobacillus strains do not elicit easy, and quick culture) microbes are frequently used as antimicrobial efects because their metabolic production is research models in diferent felds. Subsequently, microbes insufcient or minimal. Considering that Lactobacillus have play an important role in the research feld of enzyme struc- these efects in vitro and that their metabolites may target and ture and mode of action, drug invention, cellular regulatory play a role in the competitive exclusion of pathogens, this
Load more

Recommended publications
  • A Taxonomic Note on the Genus Lactobacillus
    Taxonomic Description template 1 A taxonomic note on the genus Lactobacillus: 2 Description of 23 novel genera, emended description 3 of the genus Lactobacillus Beijerinck 1901, and union 4 of Lactobacillaceae and Leuconostocaceae 5 Jinshui Zheng1, $, Stijn Wittouck2, $, Elisa Salvetti3, $, Charles M.A.P. Franz4, Hugh M.B. Harris5, Paola 6 Mattarelli6, Paul W. O’Toole5, Bruno Pot7, Peter Vandamme8, Jens Walter9, 10, Koichi Watanabe11, 12, 7 Sander Wuyts2, Giovanna E. Felis3, #*, Michael G. Gänzle9, 13#*, Sarah Lebeer2 # 8 '© [Jinshui Zheng, Stijn Wittouck, Elisa Salvetti, Charles M.A.P. Franz, Hugh M.B. Harris, Paola 9 Mattarelli, Paul W. O’Toole, Bruno Pot, Peter Vandamme, Jens Walter, Koichi Watanabe, Sander 10 Wuyts, Giovanna E. Felis, Michael G. Gänzle, Sarah Lebeer]. 11 The definitive peer reviewed, edited version of this article is published in International Journal of 12 Systematic and Evolutionary Microbiology, https://doi.org/10.1099/ijsem.0.004107 13 1Huazhong Agricultural University, State Key Laboratory of Agricultural Microbiology, Hubei Key 14 Laboratory of Agricultural Bioinformatics, Wuhan, Hubei, P.R. China. 15 2Research Group Environmental Ecology and Applied Microbiology, Department of Bioscience 16 Engineering, University of Antwerp, Antwerp, Belgium 17 3 Dept. of Biotechnology, University of Verona, Verona, Italy 18 4 Max Rubner‐Institut, Department of Microbiology and Biotechnology, Kiel, Germany 19 5 School of Microbiology & APC Microbiome Ireland, University College Cork, Co. Cork, Ireland 20 6 University of Bologna, Dept. of Agricultural and Food Sciences, Bologna, Italy 21 7 Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Vrije Universiteit 22 Brussel, Brussels, Belgium 23 8 Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, Ghent, 24 Belgium 25 9 Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, Canada 26 10 Department of Biological Sciences, University of Alberta, Edmonton, Canada 27 11 National Taiwan University, Dept.
    [Show full text]
  • Insights Into the Microbiological Safety of Wooden
    microorganisms Article Insights into the Microbiological Safety of Wooden Cutting Boards Used for Meat Processing in Hong Kong’s Wet Markets: A Focus on Food-Contact Surfaces, Cross-Contamination and the Efficacy of Traditional Hygiene Practices Patrick T. Sekoai 1 , Shiqi Feng 1, Wenwen Zhou 1, Wing Y. Ngan 1, Yang Pu 1, Yuan Yao 1, Jie Pan 2 and Olivier Habimana 1,* 1 The School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong 999077, China; [email protected] (P.T.S.); [email protected] (S.F.); [email protected] (W.Z.); [email protected] (W.Y.N.); [email protected] (Y.P.); [email protected] (Y.Y.) 2 Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; [email protected] * Correspondence: [email protected] Received: 17 March 2020; Accepted: 15 April 2020; Published: 17 April 2020 Abstract: Hong Kong’s wet markets play a crucial role in the country’s supply of safe, fresh meat to satisfy the dietary needs of its population. Whilst food safety regulations have been introduced over the past few years to maintain the microbial safety of foods sold from these wet markets, it remains unclear whether the hygiene maintenance that is performed on the wooden cutting boards used for meat-processing is effective. In fact, hygiene maintenance may often be overlooked, and hygiene standards may be insufficient. If so, this may lead to the spread of harmful pathogens through cross-contamination, thereby causing severe risks to public health. The aim of this study was to determine the level of microbial transfer between wooden cutting boards and swine meat of various qualities, using 16S metagenomic sequencing, strain identification and biofilm screening of isolated strains.
    [Show full text]
  • Hickman Catheter-Related Bacteremia with Kluyvera
    Jpn. J. Infect. Dis., 61, 229-230, 2008 Short Communication Hickman Catheter-Related Bacteremia with Kluyvera cryocrescens: a Case Report Demet Toprak, Ahmet Soysal, Ozden Turel, Tuba Dal1, Özlem Özkan1, Guner Soyletir1 and Mustafa Bakir* Department of Pediatrics, Section of Pediatric Infectious Diseases and 1Department of Microbiology, Marmara University School of Medicine, Istanbul, Turkey (Received September 10, 2007. Accepted March 19, 2008) SUMMARY: This report describes a 2-year-old child with neuroectodermal tumor presenting with febrile neu- tropenia. Blood cultures drawn from the peripheral vein and Hickman catheter revealed Kluyvera cryocrescens growth. The Hickman catheter was removed and the patient was successfully treated with cefepime and amikacin. Isolation of Kluyvera spp. from clinical specimens is rare. This saprophyte microorganism may cause serious central venous catheter infections, especially in immunosuppressed patients. Clinicians should be aware of its virulence and resistance to many antibiotics. Central venous catheters (CVCs) are frequently used in confirmed by VITEK AMS (VITEK Systems, Hazelwood, Mo., patients with hematologic and oncologic disorders. Along with USA) and by API (Analytab Inc., Plainview, N.Y., USA). Anti- their increased use, short- and long-term complications of microbial susceptibility was assessed by the disc diffusion CVCs are more often being reported. The incidence of CVC method. K. cryocrescens was sensitive for cefotaxime, cefepime, infections correlates with duration of catheter usage, immuno- carbapenems, gentamycine, amikacin and ciprofloxacin. logic status of the patient, type of catheter utilized and mainte- Intravenous cefepime and amikacin were continued and the nance techniques employed. A definition of CVC infection CVC was removed. His echocardiogram was normal and has been difficult to establish because of problems differen- a repeat peripheral blood culture was sterile 48 h after the tiating contaminant from pathogen microorganisms.
    [Show full text]
  • BIODIVERSITY and TECHNOLOGICAL POTENTIAL of the Weissella STRAINS ISOLATED from DIFFERENT REGIONS PRODUCING ARTISANAL CHEESES in BRAZIL
    CAMILA GONÇALVES TEIXEIRA BIODIVERSITY AND TECHNOLOGICAL POTENTIAL OF THE Weissella STRAINS ISOLATED FROM DIFFERENT REGIONS PRODUCING ARTISANAL CHEESES IN BRAZIL Dissertation submitted to the Food Science and Technology Graduate Program of the Universidade Federal de Viçosa in partial fulfillment of the requirements for the degree of Magister Scientiae. VIÇOSA MINAS GERAIS - BRASIL 2018 ii CAMILA GONÇALVES TEIXEIRA BIODIVERSITY AND TECHNOLOGICAL POTENTIAL OF THE Weissella STRAINS ISOLATED FROM DIFFERENT REGIONS PRODUCING ARTISANAL CHEESES IN BRAZIL Dissertation submitted to the Food Science and Technology Graduate Program of the Universidade Federal de Viçosa in partial fulfillment of the requirements for the degree of Magister Scientiae. APPROVED: July 31, 2018. iii “Ninguém é suficientemente perfeito, que não possa aprender com o outro e, ninguém é totalmente estruído de valores que não possa ensinar algo ao seu irmão. ” (São Francisco de Assis) iv ACKNOWLEDGEMENT To God, for walking with me and for carrying me on during the most difficult moments of my walk in my work. To my family, especially my mothers, Francisca and Aparecida, and my fathers, Gerônimo and Genilson, for the examples of wisdom and the incentives that have always motivated me. To my brothers, Guilherme and Henrique, and sisters Lívia and Lucimar for the moments of distraction, love and affection. To my boyfriend and companion Mateus, for the affection, for the patience and for being with me in each moment of this journey, helping me to overcome each obstacle. To the interns at Inovaleite, Waléria and Julia, who helped me a lot in the heavy work. To the friend Andressa, who shared and helped in every experiment and always cheered for me.
    [Show full text]
  • Loofah Sponges As Bio-Carriers in a Pilot-Scale Integrated Fixed-Film Activated Sludge System for Municipal Wastewater Treatment
    sustainability Article Loofah Sponges as Bio-Carriers in a Pilot-Scale Integrated Fixed-Film Activated Sludge System for Municipal Wastewater Treatment Huyen T.T. Dang 1 , Cuong V. Dinh 1 , Khai M. Nguyen 2,* , Nga T.H. Tran 2, Thuy T. Pham 2 and Roberto M. Narbaitz 3 1 Faculty of Environmental Engineering, National University of Civil Engineering, No 55, Giai Phong Street, Hanoi 84024, Vietnam; [email protected] (H.T.T.D.); [email protected] (C.V.D.) 2 Faculty of Environmental Sciences, VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi 84024, Vietnam; [email protected] (N.T.H.T.); [email protected] (T.T.P.) 3 Department of Civil Engineering, University of Ottawa, 161 Louis Pasteur Pvt., Ottawa, ON K1N 6N5, Canada; [email protected] * Correspondence: [email protected] Received: 15 May 2020; Accepted: 5 June 2020; Published: 10 June 2020 Abstract: Fixed-film biofilm reactors are considered one of the most effective wastewater treatment processes, however, the cost of their plastic bio-carriers makes them less attractive for application in developing countries. This study evaluated loofah sponges, an eco-friendly renewable agricultural product, as bio-carriers in a pilot-scale integrated fixed-film activated sludge (IFAS) system for the treatment of municipal wastewater. Tests showed that pristine loofah sponges disintegrated within two weeks resulting in a decrease in the treatment efficiencies. Accordingly, loofah sponges were modified by coating them with CaCO3 and polymer. IFAS pilot tests using the modified loofah sponges achieved 83% organic removal and 71% total nitrogen removal and met Vietnam’s wastewater effluent discharge standards.
    [Show full text]
  • From Genotype to Phenotype: Inferring Relationships Between Microbial Traits and Genomic Components
    From genotype to phenotype: inferring relationships between microbial traits and genomic components Inaugural-Dissertation zur Erlangung des Doktorgrades der Mathematisch-Naturwissenschaftlichen Fakult¨at der Heinrich-Heine-Universit¨atD¨usseldorf vorgelegt von Aaron Weimann aus Oberhausen D¨usseldorf,29.08.16 aus dem Institut f¨urInformatik der Heinrich-Heine-Universit¨atD¨usseldorf Gedruckt mit der Genehmigung der Mathemathisch-Naturwissenschaftlichen Fakult¨atder Heinrich-Heine-Universit¨atD¨usseldorf Referent: Prof. Dr. Alice C. McHardy Koreferent: Prof. Dr. Martin J. Lercher Tag der m¨undlichen Pr¨ufung: 24.02.17 Selbststandigkeitserkl¨ arung¨ Hiermit erkl¨areich, dass ich die vorliegende Dissertation eigenst¨andigund ohne fremde Hilfe angefertig habe. Arbeiten Dritter wurden entsprechend zitiert. Diese Dissertation wurde bisher in dieser oder ¨ahnlicher Form noch bei keiner anderen Institution eingereicht. Ich habe bisher keine erfolglosen Promotionsversuche un- ternommen. D¨usseldorf,den . ... ... ... (Aaron Weimann) Statement of authorship I hereby certify that this dissertation is the result of my own work. No other person's work has been used without due acknowledgement. This dissertation has not been submitted in the same or similar form to other institutions. I have not previously failed a doctoral examination procedure. Summary Bacteria live in almost any imaginable environment, from the most extreme envi- ronments (e.g. in hydrothermal vents) to the bovine and human gastrointestinal tract. By adapting to such diverse environments, they have developed a large arsenal of enzymes involved in a wide variety of biochemical reactions. While some such enzymes support our digestion or can be used for the optimization of biotechnological processes, others may be harmful { e.g. mediating the roles of bacteria in human diseases.
    [Show full text]
  • International Journal of Systematic and Evolutionary Microbiology (2016), 66, 5575–5599 DOI 10.1099/Ijsem.0.001485
    International Journal of Systematic and Evolutionary Microbiology (2016), 66, 5575–5599 DOI 10.1099/ijsem.0.001485 Genome-based phylogeny and taxonomy of the ‘Enterobacteriales’: proposal for Enterobacterales ord. nov. divided into the families Enterobacteriaceae, Erwiniaceae fam. nov., Pectobacteriaceae fam. nov., Yersiniaceae fam. nov., Hafniaceae fam. nov., Morganellaceae fam. nov., and Budviciaceae fam. nov. Mobolaji Adeolu,† Seema Alnajar,† Sohail Naushad and Radhey S. Gupta Correspondence Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Radhey S. Gupta L8N 3Z5, Canada [email protected] Understanding of the phylogeny and interrelationships of the genera within the order ‘Enterobacteriales’ has proven difficult using the 16S rRNA gene and other single-gene or limited multi-gene approaches. In this work, we have completed comprehensive comparative genomic analyses of the members of the order ‘Enterobacteriales’ which includes phylogenetic reconstructions based on 1548 core proteins, 53 ribosomal proteins and four multilocus sequence analysis proteins, as well as examining the overall genome similarity amongst the members of this order. The results of these analyses all support the existence of seven distinct monophyletic groups of genera within the order ‘Enterobacteriales’. In parallel, our analyses of protein sequences from the ‘Enterobacteriales’ genomes have identified numerous molecular characteristics in the forms of conserved signature insertions/deletions, which are specifically shared by the members of the identified clades and independently support their monophyly and distinctness. Many of these groupings, either in part or in whole, have been recognized in previous evolutionary studies, but have not been consistently resolved as monophyletic entities in 16S rRNA gene trees. The work presented here represents the first comprehensive, genome- scale taxonomic analysis of the entirety of the order ‘Enterobacteriales’.
    [Show full text]
  • Evaluation of the Probiotic Potential of Weissella Confusa Isolated from Traditional Fermented Rice
    Evaluation of the Probiotic Potential of Weissella Confusa Isolated From Traditional Fermented Rice Soumitra Nath ( [email protected] ) Department of Biotechnology, Gurucharan College, Silchar, Assam, India https://orcid.org/0000-0003- 3678-2297 Monisha Roy Gurucharan College, Silchar Jibalok Sikidar Gurucharan College, Silchar Bibhas Deb Gurucharan College, Silchar Research Keywords: Fermented rice, Weissella confusa, Probiotic, Articial gastric juice, Hydrophobicity Posted Date: September 21st, 2020 DOI: https://doi.org/10.21203/rs.3.rs-75426/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published on April 21st, 2021. See the published version at https://doi.org/10.1016/j.crbiot.2021.04.001. Page 1/21 Abstract Background: Probiotic are microorganism that is good for health, especially for the digestive system and can be consumed through fermented foods or supplements. The study aims to identify potential probiotic bacteria from fermented rice sample that are commonly found in Cachar district of Assam, India. Methods: White rice sample of “Ranjit” variety was collected from the local market, cooked in the laboratory and soaked overnight in sterile water for microbial fermentation. Probiotic properties of isolates were tested, and was identied by biochemical tests and 16S rRNA sequencing. In-vitro tests were also performed to demonstrate their colonisation properties, haemolytic activity and antagonistic activity against other pathogens. Results: The predominant fermentative-bacteria was identied as Weissella confusa strain GCC_19R1 (GenBank: MN394112). The isolate showed signicant growth in the presence of articial gastric-juice, bile and pancreatin.
    [Show full text]
  • Bacterial Involvements in Ulcerative Colitis: Molecular and Microbiological Studies
    BACTERIAL INVOLVEMENTS IN ULCERATIVE COLITIS: MOLECULAR AND MICROBIOLOGICAL STUDIES Samia Alkhalil A thesis submitted in partial fulfilment of the requirements for the award of the degree of Doctor of Philosophy of the University of Portsmouth Institute of Biomedical and biomolecular Sciences School of Pharmacy and Biomedical Sciences October 2017 AUTHORS’ DECLARATION I declare that whilst registered as a candidate for the degree of Doctor of Philosophy at University of Portsmouth, I have not been registered as a candidate for any other research award. The results and conclusions embodied in this thesis are the work of the named candidate and have not been submitted for any other academic award. Samia Alkhalil I ABSTRACT Inflammatory bowel disease (IBD) is a series of disorders characterised by chronic intestinal inflammation, with the principal examples being Crohn’s Disease (CD) and ulcerative colitis (UC). A paradigm of these disorders is that the composition of the colon microbiota changes, with increases in bacterial numbers and a reduction in diversity, particularly within the Firmicutes. Sulfate reducing bacteria (SRB) are believed to be involved in the etiology of these disorders, because they produce hydrogen sulfide which may be a causative agent of epithelial inflammation, although little supportive evidence exists for this possibility. The purpose of this study was (1) to detect and compare the relative levels of gut bacterial populations among patients suffering from ulcerative colitis and healthy individuals using PCR-DGGE, sequence analysis and biochip technology; (2) develop a rapid detection method for SRBs and (3) determine the susceptibility of Desulfovibrio indonesiensis in biofilms to Manuka honey with and without antibiotic treatment.
    [Show full text]
  • Insight Into the Hidden Bacterial Diversity of Lake Balaton, Hungary
    Biologia Futura (2020) 71:383–391 https://doi.org/10.1007/s42977-020-00040-6 ORIGINAL PAPER Insight into the hidden bacterial diversity of Lake Balaton, Hungary E. Tóth1 · M. Toumi1 · R. Farkas1 · K. Takáts1 · Cs. Somodi1 · É. Ács2,3 Received: 22 May 2020 / Accepted: 17 August 2020 / Published online: 7 September 2020 © The Author(s) 2020 Abstract In the present study, the prokaryotic community structure of the water of Lake Balaton was investigated at the littoral region of three diferent points (Tihany, Balatonmáriafürdő and Keszthely) by cultivation independent methods [next-generation sequencing (NGS), specifc PCRs and microscopy cell counting] to check the hidden microbial diversity of the lake. The taxon-specifc PCRs did not show pathogenic bacteria but at Keszthely and Máriafürdő sites extended spectrum beta- lactamase-producing microorganisms could be detected. The bacterial as well as archaeal diversity of the water was high even when many taxa are still uncultivable. Based on NGS, the bacterial communities were dominated by Proteobacteria, Bacteroidetes and Actinobacteria, while the most frequent Archaea belonged to Woesearchaeia (Nanoarchaeota). The ratio of the detected taxa difered among the samples. Three diferent types of phototrophic groups appeared: Cyanobacteria (oxy- genic phototrophic organisms), Chlorofexi (anaerobic, organotrophic bacteria) and the aerobic, anoxic photoheterotrophic group (AAPs). Members of Firmicutes appeared only with low abundance, and Enterobacteriales (order within Proteobac- teria) were present also only in low numbers in all samples. Keywords Lake Balaton · Bacterial diversity · Archaea · Bacteria · Next-generation sequencing (NGS) Introduction (Istvánovics et al. 2008; Bolla et al. 2010; Hatvani et al. 2014; Maasz et al. 2019). Lake Balaton is the biggest lake of Central Europe, a shal- The frst microbiological investigations aimed at studying low water ditch, with an average depth of 3.0–3.6 m.
    [Show full text]
  • A Holistic Review on Euro-Asian Lactic Acid Bacteria Fermented Cereals and Vegetables
    microorganisms Review A Holistic Review on Euro-Asian Lactic Acid Bacteria Fermented Cereals and Vegetables Tolulope Joshua Ashaolu 1,2 and Anna Reale 3,* 1 Smart Agriculture Research and Application Team, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam; [email protected] 2 Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam 3 Institute of Food Science, National Research Council, ISA-CNR, 83100 Avellino, Italy * Correspondence: [email protected]; Tel.: +39-0825-299541 Received: 1 July 2020; Accepted: 31 July 2020; Published: 3 August 2020 Abstract: Lactic acid fermentation is one of the oldest methods used worldwide to preserve cereals and vegetables. Europe and Asia have long and huge traditions in the manufacturing of lactic acid bacteria (LAB)-fermented foods. They have different cultures, religions and ethnicities with the available resources that strongly influence their food habits. Many differences and similarities exist with respect to raw substrates, products and microbes involved in the manufacture of fermented products. Many of them are produced on industrial scale with starter cultures, while others rely on spontaneous fermentation, produced homemade or in traditional events. In Europe, common LAB-fermented products made from cereals include traditional breads, leavened sweet doughs, and low and non-alcoholic cereal-based beverages, whereas among vegetable ones prevail sauerkraut, cucumber pickles and olives. In Asia, the prevailing LAB-fermented cereals include acid-leavened steamed breads or pancakes from rice and wheat, whereas LAB-fermented vegetables are more multifarious, such as kimchi, sinki, khalpi, dakguadong, jiang-gua, soidon and sauerkraut. Here, an overview of the main Euro-Asiatic LAB-fermented cereals and vegetables was proposed, underlining the relevance of fermentation as a tool for improving cereals and vegetables, and highlighting some differences and similarities among the Euro-Asiatic products.
    [Show full text]
  • Clinical, Epidemiological Description and Implementation of Infection
    ISSN: 2573-9565 Research Article Journal of Clinical Review & Case Reports Clinical, Epidemiological Description and Implementation of Infection Prevention and Control Measures for Hospital Outbreak Intervention by Kluyvera Ascorbata Producer of Carbapenemase in Colombia Martínez Rosado LL* and Arregocés D *Corresponding author Martínez Rosado LL, Infectious Diseases Unit, La Divina Misericordia Hospital, Magangué-Bolívar, La María Hospital, Medellín, Argentine Catholic Infectious Diseases Unit, La Divina Misericordia Hospital, University Santa Maria de los Buenos Aires, Colombia, E-mail: lubermed22@ Magangué-Bolívar, Colombia gmail.com Submitted: 27 Sep 2018; Accepted: 03 Oct 2018; Published: 23 Jan 2019 Introduction It is difficult to correlate Kluyvera infections with specific clinical In 1936, AJ Kluyver and CB Niel Goes, postulate that could features. The origin of the infection is environmental in the case exist A group of organisms with polar flagellum in the family of soft tissue infections; probably enteric in the case of bile duct Pseudomonadae; that they had a type of acid-mixed fermentation infection, urinary sepsis and bacteremia; and it is presumed to be similar to the delta Escherichia. Asai and Okumura described in of respiratory origin in the case of mediastinitis. In the medical 1956 five such organisms with polar flagellum and proposed the literature there are deep reviews over the last twenty years, in which number of genus Kluyvera in honor of AC Kluyver In 1981, this Kluyvera exhibits high-level resistance mechanisms that give it the group as integrates the Enterobacteriaceae family and will count character of a primary pathogen; however, it is an infrequent germ. back species [1].
    [Show full text]