1
|
Catunda RQ, Altabtbaei K, Flores-Mir C, Febbraio M. Pre-treatment oral microbiome analysis and salivary Stephan curve kinetics in white spot lesion development in orthodontic patients wearing fixed appliances. A pilot study. BMC Oral Health 2023; 23:239. [PMID: 37095478 PMCID: PMC10127078 DOI: 10.1186/s12903-023-02917-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/28/2023] [Indexed: 04/26/2023] Open
Abstract
BACKGROUND White spot lesions (WSLs) are a formidable challenge during orthodontic treatment, affecting patients regardless of oral hygiene. Multifactorial in nature, amongst potential contributors to their development are the microbiome and salivary pH. The aim of our pilot study is to determine if pre-treatment differences in salivary Stephan curve kinetics and salivary microbiome features correlate with WSL development in orthodontic patients with fixed appliances. We hypothesize that non-oral hygiene determined differences in saliva could be predictive of WSL formation in this patient population through analysis of salivary Stephan curve kinetics, and that these differences would further manifest as changes in the oral microbiome. METHODS In this prospective cohort study, twenty patients with initial simplified oral hygiene index scores of "good" that were planning to undergo orthodontic treatment with self-ligating fixed appliances for at least 12 months were enrolled. At pre-treatment stage, saliva was collected for microbiome analysis, and at 15-minute intervals after a sucrose rinse over 45 min for Stephan curve kinetics. RESULTS 50% of patients developed a mean 5.7 (SEM: 1.2) WSLs. There were no differences in saliva microbiome species richness, Shannon alpha diversity or beta diversity between the groups. Capnocytophaga sputigena exclusively and Prevotella melaninogenica predominantly were found in WSL patients, while Streptococcus australis was negatively correlated with WSL development. Streptococcus mitis and Streptococcus anginosus were primarily present in healthy patients. There was no evidence to support the primary hypothesis. CONCLUSIONS While there were no differences in salivary pH or restitution kinetics following a sucrose challenge and no global microbial differences in WSL developers, our data showed change in salivary pH at 5 min associated with an abundance of acid-producing bacteria in saliva. The results suggest salivary pH modulation as a management strategy to inhibit the abundance of caries initiators. Our study may have uncovered the earliest predecessors to WSL/caries development.
Collapse
Affiliation(s)
| | - Khaled Altabtbaei
- Division of Periodontology, School of Dentistry, University of Alberta, Edmonton, AB, T6G 2E1, Canada
| | - Carlos Flores-Mir
- Division of Orthodontics School of Dentistry, University of Alberta, Edmonton, AB, T6G 2E1, Canada
| | - Maria Febbraio
- Division of Oral Biology, School of Dentistry, University of Alberta, 11361-87th Avenue, Edmonton, AB, T6G 2E1, Canada.
| |
Collapse
|
2
|
Zhang L, Ban Q, Li J, Wang T. Simultaneous production of hydrogen-methane and spatial community succession in an anaerobic baffled reactor treating corn starch processing wastewater. CHEMOSPHERE 2022; 300:134503. [PMID: 35395259 DOI: 10.1016/j.chemosphere.2022.134503] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/11/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
Corn starch processing wastewater (CSPW) is a high-strength organic wastewater and biological treatment is considered as the dominant process. The present work investigated the effects of pH on the bioenergy production and spatial succession of microbial community in an anaerobic baffled reactor (ABR) treating CSPW. The results showed that above 90.5% of COD removal and above 16.6 L d-1 of methane were achieved at the influent pHs of 8.0 and 7.0 under organic loading rate of 4.0 kg COD·m-3·L-1 condition. Further decreasing the influent pH to 6.0 resulted in the COD removal decreased to 89.7%. Besides, 9.2 L d-1 of hydrogen and 13.0 L d-1 of methane were obtained. There was significant difference in the volatile fatty acids profiles during the variation of pH. Illumina Miseq sequencing showed that Clostridium, Ethanoligenens, Megasphaera, Prevotella and Trichococcus with relative abundance of 2.1%∼28.1% were the dominant hydrogen-producing bacteria in C1. Methanogens (Methanothrix and Methanobacterium) dominated in the last three compartments. Function predicted analysis revealed that the abundance of metabolic-related gene families containing carbohydrate, amino acids and energy in the last three compartments were higher than that in C1. A deduced biodegradation model of CSPW in ABR revealed that the anaerobic sludge in C1 mainly produced hydrogen. Microbial population in C3 was responsible for COD removal and methane production. The redundancy analysis revealed that hydrogen production was highly correlated with some hydrogen-producing bacteria in C1, whereas methane production was positively correlated with microbial group in C2∼ C4.
Collapse
Affiliation(s)
- Liguo Zhang
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan, 030006, China; Shanxi Laboratory for Yellow River, Taiyuan, 030006, China
| | - Qiaoying Ban
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan, 030006, China; Shanxi Laboratory for Yellow River, Taiyuan, 030006, China.
| | - Jianzheng Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Tongtong Wang
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan, 030006, China
| |
Collapse
|
3
|
Takesue N, Suzuki K, Mizutani M, Nakamura Y. Iron Enhances the Growth of the Genus Pectinatus in Beer. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2022. [DOI: 10.1080/03610470.2021.2019554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nobuchika Takesue
- Research Laboratories for Alcohol Beverages, Asahi Breweries Ltd, Moriya, Ibaraki, Japan
| | - Koji Suzuki
- Asahi Quality and Innovations, Ltd, Moriya, Ibaraki, Japan
| | - Masanori Mizutani
- Research Laboratories for Alcohol Beverages, Asahi Breweries Ltd, Moriya, Ibaraki, Japan
| | - Yuichi Nakamura
- Research Laboratories for Alcohol Beverages, Asahi Breweries Ltd, Moriya, Ibaraki, Japan
| |
Collapse
|
4
|
Kordialik-Bogacka E. Biopreservation of beer: Potential and constraints. Biotechnol Adv 2022; 58:107910. [PMID: 35038561 DOI: 10.1016/j.biotechadv.2022.107910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/19/2021] [Accepted: 01/09/2022] [Indexed: 12/13/2022]
Abstract
The biopreservation of beer, using only antimicrobial agents of natural origin to ensure microbiological stability, is of great scientific and commercial interest. This review article highlights progress in the biological preservation of beer. It describes the antimicrobial properties of beer components and microbiological spoilage risks. It discusses novel biological methods for enhancing beer stability, using natural antimicrobials from microorganisms, plants, and animals to preserve beer, including legal restrictions. The future of beer preservation will involve the skilled knowledge-based exploitation of naturally occurring components in beer, supplementation with generally regarded as safe antimicrobial additives, and mild physical treatments.
Collapse
Affiliation(s)
- Edyta Kordialik-Bogacka
- Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 171/173 Wolczanska Street, 90-530 Lodz, Poland.
| |
Collapse
|
5
|
Shimokawa M, Suzuki K, Motoyama Y. Development of Culture-Independent Detection Method for Beer Spoilage Lactic Acid Bacteria. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2021. [DOI: 10.1080/03610470.2021.2006559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Masaki Shimokawa
- Research Laboratories for Alcohol Beverages, Asahi Breweries, Ltd, Moriya, Japan
| | - Koji Suzuki
- Asahi Quality and Innovations, Ltd, Moriya, Japan
| | - Yasuo Motoyama
- Quality Assurance Department, Nippon Freeze Drying Co., Ltd, Azumino, Japan
| |
Collapse
|
6
|
Kurniawan YN, Shinohara Y, Sakai H, Magarifuchi T, Suzuki K. Applications of the Third-Generation DNA Sequencing Technology to the Detection of Hop Tolerance Genes and Discrimination of Saccharomyces Yeast Strains. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2021. [DOI: 10.1080/03610470.2021.1939606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Yohanes Novi Kurniawan
- Analytical Science Laboratories, Asahi Quality and Innovations, Ltd, Moriya, Ibaraki, Japan
| | - Yuji Shinohara
- Analytical Science Laboratories, Asahi Quality and Innovations, Ltd, Moriya, Ibaraki, Japan
| | - Hiroaki Sakai
- Analytical Science Laboratories, Asahi Quality and Innovations, Ltd, Moriya, Ibaraki, Japan
| | - Tetsuro Magarifuchi
- Analytical Science Laboratories, Asahi Quality and Innovations, Ltd, Moriya, Ibaraki, Japan
| | - Koji Suzuki
- Asahi Quality and Innovations, Ltd, Moriya, Ibaraki, Japan
| |
Collapse
|
7
|
Srinivasan S, Beamer MA, Fiedler TL, Austin MN, Sizova MV, Strenk SM, Agnew KJ, Gowda GAN, Raftery D, Epstein SS, Fredricks DN, Hillier SL. Megasphaera lornae sp. nov., Megasphaera hutchinsoni sp. nov., and Megasphaera vaginalis sp. nov.: novel bacteria isolated from the female genital tract. Int J Syst Evol Microbiol 2021; 71. [PMID: 33616513 DOI: 10.1099/ijsem.0.004702] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Six strictly anaerobic Gram-negative bacteria representing three novel species were isolated from the female reproductive tract. The proposed type strains for each species were designated UPII 199-6T, KA00182T and BV3C16-1T. Phylogenetic analyses based on 16S rRNA gene sequencing indicated that the bacterial isolates were members of the genus Megasphaera. UPII 199-6T and KA00182T had 16S rRNA gene sequence identities of 99.9 % with 16S rRNA clone sequences previously amplified from the human vagina designated as Megasphaera type 1 and Megasphaera type 2, members of the human vaginal microbiota associated with bacterial vaginosis, preterm birth and HIV acquisition. UPII 199-6T exhibited sequence identities ranging from 92.9 to 93.6 % with validly named Megasphaera isolates and KA00182T had 16S rRNA gene sequence identities ranging from 92.6-94.2 %. BV3C16-1T was most closely related to Megasphaera cerevisiae with a 16S rRNA gene sequence identity of 95.4 %. Cells were coccoid or diplococcoid, non-motile and did not form spores. Genital tract isolates metabolized organic acids but were asaccharolytic. The isolates also metabolized amino acids. The DNA G+C content for the genome sequences of UPII 199-6T, KA00182T and BV3C16-1T were 46.4, 38.9 and 49.8 mol%, respectively. Digital DNA-DNA hybridization and average nucleotide identity between the genital tract isolates and other validly named Megasphaera species suggest that each isolate type represents a new species. The major fatty acid methyl esters include the following: C12 : 0, C16 : 0, C16 : 0 dimethyl acetal (DMA) and summed feature 5 (C15 : 0 DMA and/or C14 : 0 3-OH) in UPII 199-6T; C16 : 0 and C16 : 1 cis 9 in KA00182T; C12 : 0; C14 : 0 3-OH; and summed feature 5 in BV3C16-1T. The isolates produced butyrate, isobutyrate, and isovalerate but there were specific differences including production of formate and propionate. Together, these data indicate that UPII 199-6T, KA00182T and BV3C16-1T represent novel species within the genus Megasphaera. We propose the following names: Megasphaera lornae sp. nov. for UPII 199-6T representing the type strain of this species (=DSM 111201T=ATCC TSD-205T), Megasphaera hutchinsoni sp. nov. for KA00182T representing the type strain of this species (=DSM 111202T=ATCC TSD-206T) and Megasphaera vaginalis sp. nov. for BV3C16-1T representing the type strain of this species (=DSM 111203T=ATCC TSD-207T).
Collapse
Affiliation(s)
- Sujatha Srinivasan
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - May A Beamer
- Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Tina L Fiedler
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | | - Maria V Sizova
- Present address: Evelo Biosciences, 620 Memorial Drive, Cambridge, MA, USA.,Department of Biology, Northeastern University, Boston, MA, USA
| | - Susan M Strenk
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Kathy J Agnew
- Division of Gynecologic Oncology, Department of Obstetrics & Gynecology, University of Washington Medical Center, Seattle, WA, USA
| | - G A Nagana Gowda
- Northwest Metabolomics Research Center and Mitochondrial and Metabolism Center, Anesthesiology and Pain Medicine, University of Washington Medical Center, Seattle, WA, USA
| | - Daniel Raftery
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Northwest Metabolomics Research Center and Mitochondrial and Metabolism Center, Anesthesiology and Pain Medicine, University of Washington Medical Center, Seattle, WA, USA
| | - Slava S Epstein
- Department of Biology, Northeastern University, Boston, MA, USA
| | - David N Fredricks
- Department of Medicine, University of Washington, Seattle, WA, USA.,Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Sharon L Hillier
- University of Pittsburgh School of Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, Pittsburgh, PA, USA.,Magee-Womens Research Institute, Pittsburgh, PA, USA
| |
Collapse
|
8
|
Rodríguez-Saavedra M, González de Llano D, Beltran G, Torija MJ, Moreno-Arribas MV. Pectinatus spp. - Unpleasant and recurrent brewing spoilage bacteria. Int J Food Microbiol 2020; 336:108900. [PMID: 33129006 DOI: 10.1016/j.ijfoodmicro.2020.108900] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 09/19/2020] [Accepted: 10/02/2020] [Indexed: 12/20/2022]
Abstract
Traditionally, beer has been recognised as a beverage with high microbiological stability because of the hostile growth environment posed by beer and increasing attention being paid to brewery hygiene. However, the microbiological risk has increased in recent years because of technological advances toward reducing oxygen in beers, besides the increase in novel beer styles production, such as non-pasteurised, flash pasteurised, cold sterilised, mid-strength, and alcoholic-free beer, that are more prone to spoilage bacteria. Moreover, using innovative beer ingredients like fruits and vegetables is an added cause of microbial spoilage. To maintain quality and good brand image, beer spoilage microorganisms are a critical concern for breweries worldwide. Pectinatus and Megasphaera are Gram-negative bacteria mostly found in improper brewing environments, leading to consumer complaints and financial losses. Because of the lack of compiled scientific knowledge on Pectinatus spoilage ability, this review provides a comprehensive overview of the occurrence, survival mechanisms, and the factors affecting beer spoilage Pectinatus species in the brewing process.
Collapse
Affiliation(s)
- Magaly Rodríguez-Saavedra
- Instituto de Investigación en Ciencias de la Alimentación (CIAL), CSIC-UAM, c/ Nicolás Cabrera, 29049 Madrid, Spain
| | - Dolores González de Llano
- Instituto de Investigación en Ciencias de la Alimentación (CIAL), CSIC-UAM, c/ Nicolás Cabrera, 29049 Madrid, Spain
| | - Gemma Beltran
- Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - María-Jesús Torija
- Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - M Victoria Moreno-Arribas
- Instituto de Investigación en Ciencias de la Alimentación (CIAL), CSIC-UAM, c/ Nicolás Cabrera, 29049 Madrid, Spain.
| |
Collapse
|
9
|
Bordigoni A, Lo C, Yimagou E, Diop K, Nicaise B, Raoult D, Desnues C, Fenollar F. Megasphaera vaginalis sp. nov. and Anaerococcus vaginimassiliensis sp. nov., new bacteria isolated from vagina of French woman with bacterial vaginosis. New Microbes New Infect 2020; 37:100706. [PMID: 32774867 PMCID: PMC7404545 DOI: 10.1016/j.nmni.2020.100706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/26/2020] [Accepted: 05/29/2020] [Indexed: 11/25/2022] Open
Abstract
Using the culturomics method, two strains were isolated, identified and characterized following the taxonogenomics concept. Megasphaera vaginalis sp. nov. strain Marseille-P4512 (= CSURP4512) and Anaerococcus vaginimassiliensis sp. nov. strain Marseille-P4857 (= CSURP4857) were isolated from the vagina of a French woman. The phylogenic tree, phenotypic criteria and genomic analysis described here clearly show that these two bacteria are different from previously known bacterial species with standing in nomenclature and new members of Firmicutes phylum.
Collapse
Affiliation(s)
- A. Bordigoni
- Aix Marseille Université, IRD, AP-HM, MEФI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - C.I. Lo
- Aix Marseille Université, IRD, AP-HM, MEФI, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - E.K. Yimagou
- Aix Marseille Université, IRD, AP-HM, MEФI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - K. Diop
- Aix Marseille Université, IRD, AP-HM, MEФI, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - B. Nicaise
- Aix Marseille Université, IRD, AP-HM, MEФI, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - D. Raoult
- Aix Marseille Université, IRD, AP-HM, MEФI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - C. Desnues
- Aix Marseille Université, IRD, AP-HM, MEФI, Marseille, France
- IHU-Méditerranée Infection, Marseille, France
| | - F. Fenollar
- Aix Marseille Université, IRD, AP-HM, MEФI, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France
| |
Collapse
|
10
|
Suzuki K. Emergence of New Spoilage Microorganisms in the Brewing Industry and Development of Microbiological Quality Control Methods to Cope with This Phenomenon: A Review. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2020. [DOI: 10.1080/03610470.2020.1782101] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Koji Suzuki
- Asahi Quality and Innovations, Ltd, Moriya, Ibaraki, Japan
| |
Collapse
|
11
|
Kramer T, Kelleher P, van der Meer J, O'Sullivan T, Geertman JMA, Duncan SH, Flint HJ, Louis P. Comparative genetic and physiological characterisation of Pectinatus species reveals shared tolerance to beer-associated stressors but halotolerance specific to pickle-associated strains. Food Microbiol 2020; 90:103462. [PMID: 32336380 DOI: 10.1016/j.fm.2020.103462] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/09/2020] [Accepted: 02/17/2020] [Indexed: 11/19/2022]
Abstract
Obligate anaerobic bacteria from the genus Pectinatus have been known to cause beer spoilage for over 40 years. Whole genome sequencing was performed on eleven beer spoilage strains (nine Pectinatus frisingensis, one Pectinatus cerevisiiphilus and one Pectinatus haikarae isolate), as well as two pickle spoilage species (Pectinatus brassicae MB591 and Pectinatus sottacetonis MB620) and the tolerance of all species to a range of environmental conditions was tested. Exploration of metabolic pathways for carbohydrates, amino acids and vitamins showed little difference between beer spoilage- and pickle spoilage-associated strains. However, genes for certain carbohydrate- and sulphur-containing amino acid-associated enzymes were only present in the beer spoilage group and genes for specific transporters and regulatory genes were uniquely found in the pickle spoilage group. Transporters for compatible solutes, only present in pickle-associated strains, likely explain their experimentally observed higher halotolerance compared to the beer spoilers. Genes involved in biofilm formation and ATP Binding Cassette (ABC) transporters potentially capable of exporting hop-derived antimicrobial compounds were found in all strains. All species grew in the presence of alcohol up to 5% alcohol by volume (ABV) and hops extract up to 80 ppm of iso-α-acids. Therefore, the species isolated from pickle processes may pose novel hazards in brewing.
Collapse
Affiliation(s)
- Timo Kramer
- University of Aberdeen, The Rowett Institute, Foresterhill, AB25 2ZD, Aberdeen, United Kingdom
| | - Philip Kelleher
- APC Microbiome Ireland, Food Science & Technology Building, University College Cork, College Road, Cork, T12 K8AF, Ireland
| | | | - Tadhg O'Sullivan
- Heineken Supply Chain B.V., Burgemeester Smeetsweg 1, 2382 PH, Zoeterwoude, the Netherlands
| | - Jan-Maarten A Geertman
- Heineken Supply Chain B.V., Burgemeester Smeetsweg 1, 2382 PH, Zoeterwoude, the Netherlands
| | - Sylvia H Duncan
- University of Aberdeen, The Rowett Institute, Foresterhill, AB25 2ZD, Aberdeen, United Kingdom
| | - Harry J Flint
- University of Aberdeen, The Rowett Institute, Foresterhill, AB25 2ZD, Aberdeen, United Kingdom
| | - Petra Louis
- University of Aberdeen, The Rowett Institute, Foresterhill, AB25 2ZD, Aberdeen, United Kingdom.
| |
Collapse
|
12
|
Anani H, Abdallah RA, Khoder M, Fontanini A, Mailhe M, Ricaboni D, Raoult D, Fournier PE. Colibacter massiliensis gen. nov. sp. nov., a novel Gram-stain-positive anaerobic diplococcal bacterium, isolated from the human left colon. Sci Rep 2019; 9:17199. [PMID: 31748674 PMCID: PMC6868274 DOI: 10.1038/s41598-019-53791-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 11/06/2019] [Indexed: 12/22/2022] Open
Abstract
The gut microbiota is considered to play a key role in human health. As a consequence, deciphering its microbial diversity is mandatory. A polyphasic taxonogenomic strategy based on the combination of phenotypic and genomic analyses was used to characterize a new bacterium, strain Marseille-P2911. This strain was isolated from a left colon sample of a 60-year old man who underwent a colonoscopy for an etiological investigation of iron-deficiency anemia in Marseille, France. On the basis of 16S rRNA sequence comparison, the closest phylogenetic neighbor was Anaeroglobus geminatus (94.59% 16S rRNA gene sequence similarity) within the family Veillonellaceae. Cells were anaerobic, Gram-stain-positive, non-spore-forming, catalase/oxidase negative cocci grouped in pairs. The bacterium was able to grow at 37 °C after 2 days of incubation. Strain Marseille-P2911 exhibited a genome size of 1,715,864-bp with a 50.2% G + C content, and digital DNA-DNA hybridization (dDDH) and OrthoANI values with A. geminatus of only 19.1 ± 4.5% and 74.42%, respectively. The latter value being lower than the threshold for genus delineation (80.5%), we propose the creation of the new genus Colibacter gen. nov., with strain Marseille-P2911T (=DSM 103304 = CSUR P2911) being the type strain of the new species Colibacter massiliensis gen. nov., sp. nov.
Collapse
Affiliation(s)
- Hussein Anani
- Aix Marseille Univ, Institut de Recherche pour le Développement (IRD), Service de Santé des Armées, AP-HM, UMR Vecteurs Infections Tropicales et Méditeranéennes (VITROME), Marseille, France.,Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France
| | - Rita Abou Abdallah
- Aix Marseille Univ, Institut de Recherche pour le Développement (IRD), Service de Santé des Armées, AP-HM, UMR Vecteurs Infections Tropicales et Méditeranéennes (VITROME), Marseille, France.,Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France
| | - May Khoder
- Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France.,Aix-Marseille Université, Institut de Recherche pour le Développement (IRD), UMR Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France
| | - Anthony Fontanini
- Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France.,Aix-Marseille Université, Institut de Recherche pour le Développement (IRD), UMR Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France
| | - Morgane Mailhe
- Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France.,Aix-Marseille Université, Institut de Recherche pour le Développement (IRD), UMR Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France
| | - Davide Ricaboni
- Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France.,Aix-Marseille Université, Institut de Recherche pour le Développement (IRD), UMR Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France
| | - Didier Raoult
- Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France.,Aix-Marseille Université, Institut de Recherche pour le Développement (IRD), UMR Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France.,Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Pierre-Edouard Fournier
- Aix Marseille Univ, Institut de Recherche pour le Développement (IRD), Service de Santé des Armées, AP-HM, UMR Vecteurs Infections Tropicales et Méditeranéennes (VITROME), Marseille, France. .,Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, France.
| |
Collapse
|
13
|
Zhang L, Ban Q, Li J, Wan C. Functional bacterial and archaeal dynamics dictated by pH stress during sugar refinery wastewater in a UASB. BIORESOURCE TECHNOLOGY 2019; 288:121464. [PMID: 31129516 DOI: 10.1016/j.biortech.2019.121464] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/09/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
The operation performance and microbial mechanisms by pH stress were investigated during anaerobic digestion of sugar refinery wastewater in a upflow anaerobic sludge blanket (UASB) reactor to clarify correlations between pH stress, microbial community and process efficiency. Results showed that the COD removal and methane yield were respectively reduced by 24.8% and 25.3% as pH decreased to 5.0. pH decrease resulted in the composition of dominant fermentative acidogenic bacteria was changed to Butyricicoccus, Lactococcus, Brooklawnia, Armatimonadetes_gp2 and Megasphaera from Prevotella, Streptococcus, Acidaminococcus and Megasphaera, causing an increase in propionate production. In addition, the growth of propionate-oxidizing bacteria was also inhibited at pH 5.0, leading the propionate was accumulated, and then reduced the process efficiency. Methane was mainly produced through acetate cleavage by Methanosaeta during the whole operational period of UASB. pH decrease blocked the metabolic balance and community structure between different trophic groups, resulting in the decrease in reactor performance.
Collapse
Affiliation(s)
- Liguo Zhang
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan 030006, PR China
| | - Qiaoying Ban
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan 030006, PR China
| | - Jianzheng Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Chunli Wan
- Department of Environmental Science and Engineering, Fudan University, Handan Road, Shanghai 200433, PR China.
| |
Collapse
|
14
|
Maki JJ, Looft T. Megasphaera stantonii sp. nov., a butyrate-producing bacterium isolated from the cecum of a healthy chicken. Int J Syst Evol Microbiol 2018; 68:3409-3415. [PMID: 30281016 DOI: 10.1099/ijsem.0.002991] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
A novel mesophilic, anaerobic, Gram-stain-negative bacterium was isolated from the cecum of a healthy white leghorn chicken, and designated AJH120T. Cells were coccoid or diplococcoid with an average size of 0.8-1.8 µm and were non-motile with no evidence of spores. Phylogenetic analysis of 16S rRNA gene sequences revealed this organism to be a member of the genus Megasphaera, with the closest relatives being Megasphaera elsdenii (95 % sequence identity) and Megasphaera cerevisiae (95 % sequence identity). Growth was observed between 30 and 50 °C and between pH 5.0 and 9.0. AJH120T utilized a variety of carbon sources, including succinate, gluconate, fructose, ribose and pyruvate, as well as many individual amino acids. The DNA G+C content for the genome sequence of AJH120T was 52.1 mol%. Digital DNA-DNA hybridization (dDDH), average nucleotide identity (ANI) and average amino acid identity (AAI) between AJH120T and close taxonomic relatives, indicated divergence consistent with the strain representing a novel species. The major fatty acid methyl esters of the organism were C12 : 0, C14 : 0 3-OH, C18 : 1ω9c, C16 : 0 and C16 : 1ω9c. AJH120T was able to produce several short chain fatty acids, including butyrate, acetate, propionate and isovalerate. Together, these data indicate that AJH120T represents a novel species within the genus Megasphaera. We propose the name Megasphaerastantonii sp. nov. for the species. The type strain of this species is AJH120T (=DSM 106750T=CCUG 71842T).
Collapse
Affiliation(s)
- Joel J Maki
- 1United States Department of Agriculture, Food Safety and Enteric Pathogens Research Unit, National Animal Disease Center, Agricultural Research Service, 1920 Dayton Ave Ames IA 50010, USA.,2Interdepartmental Microbiology Graduate Program, Iowa State University, Ames IA 50011, USA
| | - Torey Looft
- 1United States Department of Agriculture, Food Safety and Enteric Pathogens Research Unit, National Animal Disease Center, Agricultural Research Service, 1920 Dayton Ave Ames IA 50010, USA
| |
Collapse
|
15
|
Statistical evaluation of beer spoilage bacteria by real-time PCR analyses from 2010 to 2016. JOURNAL OF THE INSTITUTE OF BREWING 2018. [DOI: 10.1002/jib.486] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
16
|
Matoulková D, Kosař K, Slabý M, Sigler K. Occurrence and Species Distribution of Strictly Anaerobic BacteriumPectinatusin Brewery Bottling Halls. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2012-0910-01] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Dagmar Matoulková
- Research Institute of Brewing and Malting, Department of Microbiology, Lípová 15, 120 44 Prague, Czech Republic
| | - Karel Kosař
- Research Institute of Brewing and Malting, Department of Microbiology, Lípová 15, 120 44 Prague, Czech Republic
| | - Martin Slabý
- Research Institute of Brewing and Malting, Department of Microbiology, Lípová 15, 120 44 Prague, Czech Republic
| | - Karel Sigler
- Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague, Czech Republic
| |
Collapse
|
17
|
Ziola B. Monoclonal Antibodies Binding to Lipopolysaccharide from the Beer-Spoilage Bacterium Megasphaera Cerevisiae Exhibit Panreactivity with the Strictly Anaerobic Gram-Negative Brewing-Related Bacteria. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2016-4895-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Barry Ziola
- Department of Pathology and Laboratory Medicine, Room 2841 Royal University Hospital, 103 Hospital Drive, University of Saskatchewan, Saskatoon, SK, S7N 0W8, Canada
| |
Collapse
|
18
|
Vávrová A, Matoulková D, Balážová T, Šedo O. MALDI-TOF MS Analysis of Anaerobic Bacteria Isolated from Biofilm-Covered Surfaces in Brewery Bottling Halls. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2014-0324-01] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Andrea Vávrová
- Section of Microbiology, Department of Experimental Biology, Faculty of Science, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Dagmar Matoulková
- Department of Microbiology, Research Institute of Brewing and Malting, Plc., Lípová 15, 120 44 Prague 2, Czech Republic
| | - Tereza Balážová
- Section of Microbiology, Department of Experimental Biology, Faculty of Science, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
- Research Group Proteomics, CEITEC, Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Ondrej Šedo
- Research Group Proteomics, CEITEC, Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| |
Collapse
|
19
|
Pittet V, Haakensen M, Chaban B, Ziola B. Detection and Identification of Pectinatus Brewery Contaminants Based on the Gene for the Major Outer Membrane Protein. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2014-0610-02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Vanessa Pittet
- Department of Pathology and Laboratory Medicine, University of Saskatchewan, Room 2841 Royal University Hospital, 103 Hospital Drive, Saskatoon, SK Canada S7N 0W8
- Contango Strategies Ltd, 15-410 Downey Road, Saskatoon, SK Canada S7N 4N1
| | - Monique Haakensen
- Contango Strategies Ltd, 15-410 Downey Road, Saskatoon, SK Canada S7N 4N1
| | - Bonnie Chaban
- Department of Veterinary Microbiology, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK Canada, S7N 5B4
| | - Barry Ziola
- Department of Pathology and Laboratory Medicine, University of Saskatchewan, Room 2841 Royal University Hospital, 103 Hospital Drive, Saskatoon, SK Canada S7N 0W8
| |
Collapse
|
20
|
|
21
|
Jeon BS, Kim S, Sang BI. Megasphaera hexanoica sp. nov., a medium-chain carboxylic acid-producing bacterium isolated from a cow rumen. Int J Syst Evol Microbiol 2017; 67:2114-2120. [PMID: 28742009 DOI: 10.1099/ijsem.0.001888] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Strain MHT, a strictly anaerobic, Gram-stain-negative, non-spore-forming, spherical coccus or coccoid-shaped microorganism, was isolated from a cow rumen during a screen for hexanoic acid-producing bacteria. The microorganism grew at 30-40 °C and pH 5.5-7.5 and exhibited production of various short- and medium-chain carboxylic acids (acetic acid, butyric acid, pentanoic acid, isobutyric acid, isovaleric acid, hexanoic acid, heptanoic acid and octanoic acid), as well as H2 and CO2 as biogas. Phylogenetic analysis based on 16S rRNA gene sequencing demonstrated that MHT represents a member of the genus Megasphaera, with the closest relatives being Megapsphaera indica NMBHI-10T (94.1 % 16S rRNA sequence similarity), Megasphaera elsdenii DSM 20460T (93.8 %) and Megasphaera paucivorans DSM 16981T (93.8 %). The major cellular fatty acids produced by MHT included C12 : 0, C16 : 0, C18 : 1cis 9, and C18 : 0, and the DNA G+C content of the MHT genome is 51.8 mol%. Together, the distinctive phenotypic and phylogenetic characteristics of MHT indicate that this microorganism represents a novel species of the genus Megasphaera, for which the name Megasphaera hexanoica sp. nov. is herein proposed. The type strain of this species is MHT (=KCCM 43214T=JCM 31403T).
Collapse
Affiliation(s)
- Byoung Seung Jeon
- Department of Chemical Engineering, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Seil Kim
- Division of Metrology for Quality of Life, Center for Bioanalysis, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Byoung-In Sang
- Department of Chemical Engineering, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| |
Collapse
|
22
|
Bittner M, Strejc J, Matoulkova D, Kolska Z, Pustelnikova L, Branyik T. Adhesion ofMegasphaera cerevisiaeonto solid surfaces mimicking materials used in breweries. JOURNAL OF THE INSTITUTE OF BREWING 2017. [DOI: 10.1002/jib.415] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Milan Bittner
- Department of Biotechnology; University of Chemistry and Technology Prague; Technicka 5 166 28 Prague Czech Republic
| | - Jan Strejc
- Department of Biotechnology; University of Chemistry and Technology Prague; Technicka 5 166 28 Prague Czech Republic
| | - Dagmar Matoulkova
- Department of Microbiology; Research Institute of Brewing and Malting; Lipova 15 120 44 Prague Czech Republic
| | - Zdenka Kolska
- Faculty of Science; J. E. Purkyně University; Ceske mladeze 8, 40096 Ústi nad Labem Czech Republic
| | - Lucie Pustelnikova
- Department of Dairy, Fat and Cosmetics; University of Chemistry and Technology Prague; Technicka 5 166 28 Prague Czech Republic
| | - Tomas Branyik
- Department of Biotechnology; University of Chemistry and Technology Prague; Technicka 5 166 28 Prague Czech Republic
| |
Collapse
|
23
|
Nallabelli N, Patil PP, Pal VK, Singh N, Jain A, Patil PB, Grover V, Korpole S. Biochemical and genome sequence analyses of Megasphaera sp. strain DISK18 from dental plaque of a healthy individual reveals commensal lifestyle. Sci Rep 2016; 6:33665. [PMID: 27651180 PMCID: PMC5030485 DOI: 10.1038/srep33665] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/30/2016] [Indexed: 11/08/2022] Open
Abstract
Much of the work in periodontal microbiology in recent years has focused on identifying and understanding periodontal pathogens. As the majority of oral microbes have not yet been isolated in pure form, it is essential to understand the phenotypic characteristics of microbes to decipher their role in oral environment. In this study, strain DISK18 was isolated from gingival sulcus and identified as a Megasphaera species. Although metagenomics studies revealed Megasphaera species as a major group within the oral habitat, they have never been isolated in cultivable form to date. Therefore, we have characterized the DISK18 strain to better understand its role in the periodontal ecosystem. Strain Megasphaera sp. DISK18 displayed the ability to adhere and self-aggregate, which are essential requisite features for inhabiting and persisting in oral cavity. It also coaggregated with other pioneer oral colonizers like Streptococcus and Lactobacillus species but not with Veillonella. This behaviour points towards its role in the ecologic succession of a multispecies biofilm as an early colonizer. The absence of virulence determining genes as observed in whole genome sequence analysis coupled with an inability to degrade collagen reveals that Megasphaera sp. strain DISK18 is likely not a pathogenic species and emphasizes its commensal lifestyle.
Collapse
Affiliation(s)
| | | | | | - Namrata Singh
- CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Ashish Jain
- Dr. Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India
| | | | - Vishakha Grover
- Dr. Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India
| | - Suresh Korpole
- CSIR-Institute of Microbial Technology, Chandigarh, India
| |
Collapse
|
24
|
Qin H, Sun Q, Pan X, Qiao Z, Yang H. Microbial Diversity and Biochemical Analysis of Suanzhou: A Traditional Chinese Fermented Cereal Gruel. Front Microbiol 2016; 7:1311. [PMID: 27610102 PMCID: PMC4997791 DOI: 10.3389/fmicb.2016.01311] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 08/08/2016] [Indexed: 11/27/2022] Open
Abstract
Suanzhou as a traditional Chinese gruel is fermented from proso millet and millet. The biochemical analysis showed Suanzhou had relatively high concentrations of lactic acid, acetic acid, and free amino acids. The metagenomics of Suanzhou were studied, with the analysis of the V4 region of 16S rRNA gene, the genera Lactobacillus and Acetobacter were found dominant with the average abundance of 58.2 and 24.4%, respectively; and with the analysis of the ITS1 region between 18S and 5.8S rRNA genes, 97.3% of the fungal community was found belonging to the genus Pichia and 2.7% belonging to five other genera. Moreover, the isolates recovered from 59 Suanzhou samples with various media were identified with the 16S rRNA or 18S rRNA gene analyses. Lactobacillus fermentum (26.9%), L. pentosus (19.4%), L. casei (17.9%), and L. brevis (16.4%) were the four dominant Lactobacillus species; Acetobacter lovaniensis (38.1%), A. syzygii (16.7%), A. okinawensis (16.7%), and A. indonesiensis (11.9%) were the four dominant Acetobacter species; and Pichia kudriavzevii (55.8%) and Galactomyces geotrichum (23.1%) were the two dominant fungal species. Additionally, L. pentosus p28-c and L. casei h28-c1 were selected for the fermentations mimicking the natural process. Collectively, our data demonstrate that Suanzhou is a nutritional food high in free amino acids and organic acids. Diverse Lactobacillus, Acetobacter, and yeast species are identified as the dominant microorganisms in Suanzhou. The isolated strains can be further characterized and used as starters for the industrial production of Suanzhou safely.
Collapse
Affiliation(s)
- Huibin Qin
- Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and TechnologyTianjin, China
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Shanxi Key Laboratory of Genetic Resources and Genetic Improvement of Minor Crops, Institute of Crop Germplasm Resources of Shanxi Academy of Agricultural SciencesTaiyuan, China
| | - Qinghui Sun
- Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and TechnologyTianjin, China
| | - Xuewei Pan
- Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and TechnologyTianjin, China
| | - Zhijun Qiao
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Shanxi Key Laboratory of Genetic Resources and Genetic Improvement of Minor Crops, Institute of Crop Germplasm Resources of Shanxi Academy of Agricultural SciencesTaiyuan, China
| | - Hongjiang Yang
- Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and TechnologyTianjin, China
| |
Collapse
|
25
|
Bittner M, de Souza AC, Brozova M, Matoulkova D, Dias DR, Branyik T. Adhesion of anaerobic beer spoilage bacteria Megasphaera cerevisiae and Pectinatus frisingensis to stainless steel. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2016.02.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
26
|
Medina E, Pérez-Díaz IM, Breidt F, Hayes J, Franco W, Butz N, Azcarate-Peril MA. Bacterial Ecology of Fermented Cucumber Rising pH Spoilage as Determined by Nonculture-Based Methods. J Food Sci 2015; 81:M121-9. [PMID: 26605993 DOI: 10.1111/1750-3841.13158] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 10/22/2015] [Indexed: 12/01/2022]
Abstract
Fermented cucumber spoilage (FCS) characterized by rising pH and the appearance of manure- and cheese-like aromas is a challenge of significant economical impact for the pickling industry. Previous culture-based studies identified the yeasts Pichia manshurica and Issatchenkia occidentalis, 4 Gram-positive bacteria, Lactobacillus buchneri, Lactobacillus parrafaraginis, Clostridium sp., and Propionibacterium and 1 Gram-negative genus, Pectinatus, as relevant in various stages of FCS given their ability to metabolize lactic acid. It was the objective of this study to augment the current knowledge of FCS using culture-independent methods to microbiologically characterize commercial spoilage samples. Ion Torrent data and 16S rRNA cloning library analyses of samples collected from commercial fermentation tanks confirmed the presence of L. rapi and L. buchneri and revealed the presence of additional species involved in the development of FCS such as Lactobacillus namurensis, Lactobacillus acetotolerans, Lactobacillus panis, Acetobacter peroxydans, Acetobacter aceti, and Acetobacter pasteurianus at pH below 3.4. The culture-independent analyses also revealed the presence of species of Veillonella and Dialister in spoilage samples with pH above 4.0 and confirmed the presence of Pectinatus spp. during lactic acid degradation at the higher pH. Acetobacter spp. were successfully isolated from commercial samples collected from tanks subjected to air purging by plating on Mannitol Yeast Peptone agar. In contrast, Lactobacillus spp. were primarily identified in samples of FCS collected from tanks not subjected to air purging for more than 4 mo. Thus, it is speculated that oxygen availability may be a determining factor in the initiation of spoilage and the leading microbiota.
Collapse
Affiliation(s)
- Eduardo Medina
- the Dept. of Food, Bioprocessing, and Nutrition Sciences, North Carolina State Univ, Raleigh, NC, 27695, U.S.A.,the Dept. of Food Biotechnology, Inst. de la Grasa, CSIC, Univ. Campus Pablo de Olavide, Building 46, Seville, 41013, Spain
| | - Ilenys M Pérez-Díaz
- the USDA-Agriculture Research Service, SAA, Food Science Research Unit, 322 Schaub Hall-NCSU, Raleigh, NC, 27695, U.S.A
| | - Fred Breidt
- the USDA-Agriculture Research Service, SAA, Food Science Research Unit, 322 Schaub Hall-NCSU, Raleigh, NC, 27695, U.S.A
| | - Janet Hayes
- the USDA-Agriculture Research Service, SAA, Food Science Research Unit, 322 Schaub Hall-NCSU, Raleigh, NC, 27695, U.S.A
| | - Wendy Franco
- Dept. of Chemical Enngineering and Bioprocesses, Pontificia Universidad Católica de Chile, Ave, Vicuna Mackena 4860, Macul, 7820436, Santiago, Chile
| | - Natasha Butz
- the Microbiome Core Facility, Dept. of Cell Biology and Physiology, School of Medicine, Univ. of North Carolina, Chapell Hill, NC, 27599, U.S.A
| | - María Andrea Azcarate-Peril
- the Microbiome Core Facility, Dept. of Cell Biology and Physiology, School of Medicine, Univ. of North Carolina, Chapell Hill, NC, 27599, U.S.A
| |
Collapse
|
27
|
Řezanka T, Matoulková D, Benada O, Sigler K. Lipidomics as an important key for the identification of beer-spoilage bacteria. Lett Appl Microbiol 2015; 60:536-43. [DOI: 10.1111/lam.12415] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 02/10/2015] [Accepted: 03/11/2015] [Indexed: 11/30/2022]
Affiliation(s)
- T. Řezanka
- Institute of Microbiology; Academy of Sciences of the Czech Republic; Prague Czech Republic
| | - D. Matoulková
- Research Institute of Brewing and Malting; Prague Czech Republic
| | - O. Benada
- Institute of Microbiology; Academy of Sciences of the Czech Republic; Prague Czech Republic
| | - K. Sigler
- Institute of Microbiology; Academy of Sciences of the Czech Republic; Prague Czech Republic
| |
Collapse
|
28
|
Anzola-Rojas MDP, Gonçalves da Fonseca S, Canedo da Silva C, Maia de Oliveira V, Zaiat M. The use of the carbon/nitrogen ratio and specific organic loading rate as tools for improving biohydrogen production in fixed-bed reactors. ACTA ACUST UNITED AC 2014. [PMID: 28626682 PMCID: PMC5466190 DOI: 10.1016/j.btre.2014.10.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effects of the carbon/nitrogen ratios of 40, 90, 140, and 190 on hydrogen production are evaluated by varying the nitrogen source in an upflow fixed-bed anaerobic reactor. An optimal C/N ratio of 137 to produce 3.5 mol H2 mol−1 sucrose is estimated by a mathematical approximation. Continuous decreases in the specific organic loading rate as a function of time seemed to be responsible for the instability of the system. A microbial biology analysis identified hydrogen-producing and -consuming microorganisms from natural inoculum.
This study assessed the effect of the carbon/nitrogen (C/N) ratio on the hydrogen production from sucrose-based synthetic wastewater in upflow fixed-bed anaerobic reactors. C/N ratios of 40, 90, 140, and 190 (g C/g N) were studied using sucrose and urea as the carbon and nitrogen sources, respectively. An optimum hydrogen yield of 3.5 mol H2 mol−1 sucrose was obtained for a C/N ratio of 137 by means of mathematical adjustment. For all C/N ratios, the sucrose removal efficiency reached values greater than 80% and was stable after the transient stage. However, biogas production was not stable at all C/N ratios as a consequence of the continuous decreasing of the specific organic loading rate (SOLR) when the biomass accumulated in the fixed-bed, causing the proliferation of H2-consuming microorganisms. It was found that the application of a constant SOLR of 6.0 g sucrose g−1 VSS d−1 stabilized the system.
Collapse
Affiliation(s)
- Mélida Del Pilar Anzola-Rojas
- Laboratory of Biological Processes, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering, University of São Paulo 1100, João Dagnone Ave., Santa Angelina, 13563-120 São Carlos, São Paulo, Brazil
| | - Samantha Gonçalves da Fonseca
- Microbial Resources Division, Research Center for Chemistry, Biology and Agriculture (CPQBA), Campinas University, CP 6171, CEP 13081-970 Campinas, São Paulo, Brazil
| | - Cynthia Canedo da Silva
- Microbial Resources Division, Research Center for Chemistry, Biology and Agriculture (CPQBA), Campinas University, CP 6171, CEP 13081-970 Campinas, São Paulo, Brazil
| | - Valeria Maia de Oliveira
- Microbial Resources Division, Research Center for Chemistry, Biology and Agriculture (CPQBA), Campinas University, CP 6171, CEP 13081-970 Campinas, São Paulo, Brazil
| | - Marcelo Zaiat
- Laboratory of Biological Processes, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering, University of São Paulo 1100, João Dagnone Ave., Santa Angelina, 13563-120 São Carlos, São Paulo, Brazil
| |
Collapse
|
29
|
Microbiology of brewing - Strictly anaerobic bacteria Megasphaera, Pectinatus, Zymophilus and Selenomonas and methods for their detection. KVASNY PRUMYSL 2014. [DOI: 10.18832/kp2014028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
Felsberg J, Jelínková M, Kubizniaková P, Matoulková D. Development of a species-specific PCR assay for identification of the strictly anaerobic bacterium Selenomonas lacticifex found in biofilm-covered surfaces in brewery bottling halls. J Appl Microbiol 2014; 117:1328-35. [PMID: 25066481 DOI: 10.1111/jam.12610] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 07/16/2014] [Accepted: 07/24/2014] [Indexed: 11/28/2022]
Abstract
AIMS In recent years, beer-spoilage cases from strictly anaerobic bacteria have risen in frequency, in connection with the production of non-pasteurized, non-alcohol and low-alcoholic beers and with the lowering of dissolved oxygen in the packaged beer. Selenomonas lacticifex, found in brewer's yeast and in biofilms covering some surfaces in brewery bottling area, is considered to be a beer-spoilage organism. This study aims to develop S. lacticifex-specific PCR assay. The objective of this study was also evaluation of the specificity and reproducibility of the developed PCR assay in real brewery samples. METHODS AND RESULTS Three primers (one forward and two reverse) were designed for identification of the strictly anaerobic bacterium S. lacticifex on the basis of the species-specific sequences of the 16S rDNA region. The specificity of the primers was tested against 44 brewery-related non-target micro-organisms that could potentially occur in the same brewery specimens. None of the primer pairs amplified DNA from any of the non-S. lacticifex strains tested including genera from the same family (Pectinatus, Megasphaera, Zymophilus) and the closely related species Selenomonas ruminantium, showing thus 100% specificity. CONCLUSIONS The PCR assay developed in this study enables the detection of the strictly anaerobic bacterium S. lacticifex in real brewery samples including pitching yeast. SIGNIFICANCE AND IMPACT OF THE STUDY Selenomonas lacticifex-specific PCR assay developed in this study allows for the extension of the spectra of detected beer-spoilage micro-organisms in brewing laboratories and thus lowering the risk of contamination of the final product.
Collapse
Affiliation(s)
- J Felsberg
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | | | | | | |
Collapse
|
31
|
Modified Multiplex PCR Methods for Comprehensive Detection ofPectinatusand Beer-Spoilage Cocci. Biosci Biotechnol Biochem 2014; 72:2764-6. [DOI: 10.1271/bbb.80297] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
32
|
Lanjekar VB, Marathe NP, Ramana VV, Shouche YS, Ranade DR. Megasphaera indica sp. nov., an obligate anaerobic bacteria isolated from human faeces. Int J Syst Evol Microbiol 2014; 64:2250-2256. [PMID: 24711592 DOI: 10.1099/ijs.0.059816-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Two coccoid, non-motile, obligately anaerobic, Gram-stain-negative bacteria, occurring singly or in pairs, or as short chains, with a mean size of 1.4-2.5 µm were isolated from the faeces of two healthy human volunteers, aged 26 and 56 years, and were designated NMBHI-10(T) and BLPYG-7, respectively. Both the strains were affiliated to the sub-branch Sporomusa of the class Clostridia as revealed by 16S rRNA gene sequence analysis. The isolates NMBHI-10(T) and BLPYG-7 showed 99.1 and 99.2% 16S rRNA gene sequence similarity, respectively, with Megasphaera elsdenii JCM 1772(T). DNA-DNA hybridization and phenotypic analysis showed that both the strains were distinct from their closest relative, M. elsdenii JCM 1772(T) (42 and 53% DNA-DNA relatedness with NMBHI-10(T) and BLPYG-7, respectively), but belong to the same species (DNA-DNA relatedness of 80.9 % between the isolates). According to DNA-DNA hybridization results, the coccoid strains belong to the same genospecies, and neither is related to any of the recognized species of the genus Megasphaera. Strains NMBHI-10(T) and BLPYG-7 grew in PYG broth at temperatures of between 15 and 40 °C (optimum 37 °C), but not at 45 °C. The strains utilized a range of carbohydrates as sources of carbon and energy including glucose, lactose, cellobiose, rhamnose, galactose and sucrose. Glucose fermentation resulted in the formation of volatile fatty acids, mainly caproic acid and organic acids such as succinic acid. Phylogenetic analysis, specific phenotypic characteristics and/or DNA G+C content also differentiated the strains from each other and from their closest relatives. The DNA G+C contents of strains NMBHI-10(T) and BLPYG-7 are 57.7 and 54.9 mol%, respectively. The major fatty acids were 12 : 0 FAME and 17 : 0 CYC FAME. On the basis of these data, we conclude that strains NMBHI-10(T) and BLPYG-7 should be classified as representing a novel species of the genus Megasphaera, for which the name Megsphaera indica sp. nov. is proposed. The type strain is NMBHI-10(T) ( = DSM 25563(T) = MCC 2481(T)).
Collapse
Affiliation(s)
- V B Lanjekar
- Microbial Sciences Division, Agharkar Research Institute, G.G Agarkar Road, Pune 411004, India
| | - N P Marathe
- National Centre for Cell Sciences, Pune University Campus, Pune 411007, India
| | - V Venkata Ramana
- National Centre for Cell Sciences, Pune University Campus, Pune 411007, India
| | - Y S Shouche
- National Centre for Cell Sciences, Pune University Campus, Pune 411007, India
| | - D R Ranade
- Microbial Sciences Division, Agharkar Research Institute, G.G Agarkar Road, Pune 411004, India
| |
Collapse
|
33
|
Seon J, Lee T, Lee SC, Pham HD, Woo HC, Song M. Bacterial community structure in maximum volatile fatty acids production from alginate in acidogenesis. BIORESOURCE TECHNOLOGY 2014; 157:22-27. [PMID: 24530946 DOI: 10.1016/j.biortech.2014.01.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 01/15/2014] [Accepted: 01/19/2014] [Indexed: 06/03/2023]
Abstract
Alginate as biomass feedstock for bioconversion into volatile fatty acids (VFAs) is limited primarily by the low solubility in water or little utilization as microbial substrate and yet unknown about the microbial community structure for acidogenesis. The bacterial community structure was demonstrated the reflected changes in VFAs profiles in the maximized acidogenic process from alginate. Bacteroides- and Clostridium-related microorganisms were suggested to be mainly responsible for the hydrolysis of alginate and VFAs production, respectively. And the bacterial community shifted corresponded to VFAs producing was statistically demonstrated. A number of features discussed in this research can stimulate further interests on bioconversion of alginate into anaerobic biofuels production.
Collapse
Affiliation(s)
- Jiyun Seon
- The Institute of Cleaner Production, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Republic of Korea; Department of Civil and Environmental Engineering, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 609-735, Republic of Korea
| | - Taeho Lee
- Department of Civil and Environmental Engineering, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 609-735, Republic of Korea
| | - Seong Chan Lee
- Department of Chemical Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Republic of Korea
| | - Hong Duc Pham
- Department of Chemical Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Republic of Korea
| | - Hee Chul Woo
- Department of Chemical Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Republic of Korea.
| | - Minkyung Song
- The Institute of Cleaner Production, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 608-739, Republic of Korea.
| |
Collapse
|
34
|
Kern CC, Vogel RF, Behr J. Identification and differentiation of brewery isolates of Pectinatus sp. by Matrix-Assisted-Laser Desorption–Ionization Time-Of-Flight Mass Spectrometry (MALDI-TOF MS). Eur Food Res Technol 2014. [DOI: 10.1007/s00217-014-2173-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
35
|
Shetty SA, Marathe NP, Lanjekar V, Ranade D, Shouche YS. Comparative genome analysis of Megasphaera sp. reveals niche specialization and its potential role in the human gut. PLoS One 2013; 8:e79353. [PMID: 24260205 PMCID: PMC3832451 DOI: 10.1371/journal.pone.0079353] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 09/30/2013] [Indexed: 12/16/2022] Open
Abstract
With increasing number of novel bacteria being isolated from the human gut ecosystem, there is a greater need to study their role in the gut ecosystem and their effect on the host health. In the present study, we carried out in silico genome-wide analysis of two novel Megasphaera sp. isolates NM10 (DSM25563) and BL7 (DSM25562), isolated from feces of two healthy individuals and validated the key features by in vitro studies. The analysis revealed the general metabolic potential, adaptive features and the potential effects of these isolates on the host. The comparative genome analysis of the two human gut isolates NM10 and BL7 with ruminal isolate Megasphaera elsdenii (DSM20460) highlighted the differential adaptive features for their survival in human gut. The key findings include features like bile resistance, presence of various sensory and regulatory systems, stress response systems, membrane transporters and resistance to antibiotics. Comparison of the “glycobiome” based on the genomes of the ruminal isolate with the human gut isolates NM10 and BL revealed the presence of diverse and unique sets of Carbohydrate-Active enzymes (CAZymes) amongst these isolates, with a higher collection of CAZymes in the human gut isolates. This could be attributed to the difference in host diet and thereby the environment, consequently suggesting host specific adaptation in these isolates. In silico analysis of metabolic potential predicted the ability of these isolates to produce important metabolites like short chain fatty acids (butyrate, acetate, formate, and caproate), vitamins and essential amino acids, which was further validated by in vitro experiments. The ability of these isolates to produce important metabolites advocates for a potential healthy influence on the host. Further in vivo studies including transcriptomic and proteomic analysis will be required for better understanding the role and impact of these Megasphaera sp. isolates NM10 and BL7 on the human host.
Collapse
Affiliation(s)
- Sudarshan Anand Shetty
- Microbial Culture Collection, National Centre for Cell Science, Pune, Maharashtra, India
| | | | | | - Dilip Ranade
- Agharkar Research Institute, Pune, Maharashtra, India
| | - Yogesh S. Shouche
- Microbial Culture Collection, National Centre for Cell Science, Pune, Maharashtra, India
- * E-mail:
| |
Collapse
|
36
|
Caldwell JM, Juvonen R, Brown J, Breidt F. Pectinatus
sottacetonis sp. nov., isolated from a commercial pickle spoilage tank. Int J Syst Evol Microbiol 2013; 63:3609-3616. [DOI: 10.1099/ijs.0.047886-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A strictly anaerobic, Gram-stain-negative, non-spore-forming, motile bacterium, designated strain FSRU B0405T, was isolated from a commercial pickle spoilage tank and characterized by biochemical, physiological and molecular biological methods. Analyses of the 16S rRNA gene sequence of strain FSRU B0405T showed affiliation to the class
Negativicutes
in the phylum
Firmicutes
, with the closest relatives being the type strains of
Pectinatus haikarae
(96 %) and
Pectinatus brassicae
(95 %). In maximum-likelihood and neighbour-joining phylogenetic trees, strain FSRU B0405T clustered definitively (in 100 % of bootstrapped trees) within the genus
Pectinatus
, but not specifically with any characterized species within this genus. Strain FSRU B0405T was a slightly curved rod, varying from 3 to 30 µm in length, motile with a distinctive X-wise movement, having flagella only on the concave side of the cell. The isolate produced acetate and propionate from fructose and glucose as major metabolites similar to type strains of species of the genus
Pectinatus
. The major fatty acids were C11 : 0, C13 : 0, C15 : 0, C13 : 0 3-OH, C17 : 1 and C18 : 1ω11t. Strain FSRU B0405T differed from the pickle wastewater strain,
Pectinatus brassicae
TYT, due to its lack of susceptibility to vancomycin, acetoin production, growth temperature range, acid production from adonitol, erythritol, glycerol, inositol, lactose, maltose, mannose, ribose, salicin, sorbitol, trehalose and xylitol and lack of hydrolysis of milk. Strain FSRU B0405T could be differentiated from other species of the genus
Pectinatus
both phenotypically and genetically. The results indicate that strain FSRU B0405T represents a novel species of the genus
Pectinatus
, for which the name
Pectinatus
sottacetonis sp. nov. is proposed. The type strain is FSRU B0405T ( = ATCC BAA-2501T = VTT E-113163T). An emended description of the genus
Pectinatus
is also provided.
Collapse
Affiliation(s)
- Jane M. Caldwell
- USDA-ARS Food Science Research Unit, 322 Schaub Hall, Raleigh, NC 27695-7624, USA
| | - Riikka Juvonen
- VTT Biotechnology, P.O. Box 1500, Espoo, FI-02044 VTT, Finland
| | - James Brown
- NCSU Microbiology, Thomas Hall, Raleigh, NC 27695, USA
| | - Fred Breidt
- USDA-ARS Food Science Research Unit, 322 Schaub Hall, Raleigh, NC 27695-7624, USA
| |
Collapse
|
37
|
Breidt F, Medina E, Wafa D, Pérez-Díaz I, Franco W, Huang HY, Johanningsmeier SD, Kim JH. Characterization of cucumber fermentation spoilage bacteria by enrichment culture and 16S rDNA cloning. J Food Sci 2013; 78:M470-6. [PMID: 23458751 DOI: 10.1111/1750-3841.12057] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 01/02/2013] [Indexed: 11/29/2022]
Abstract
UNLABELLED Commercial cucumber fermentations are typically carried out in 40000 L fermentation tanks. A secondary fermentation can occur after sugars are consumed that results in the formation of acetic, propionic, and butyric acids, concomitantly with the loss of lactic acid and an increase in pH. Spoilage fermentations can result in significant economic loss for industrial producers. The microbiota that result in spoilage remain incompletely defined. Previous studies have implicated yeasts, lactic acid bacteria, enterobacteriaceae, and Clostridia as having a role in spoilage fermentations. We report that Propionibacterium and Pectinatus isolates from cucumber fermentation spoilage converted lactic acid to propionic acid, increasing pH. The analysis of 16S rDNA cloning libraries confirmed and expanded the knowledge gained from previous studies using classical microbiological methods. Our data show that Gram-negative anaerobic bacteria supersede Gram-positive Fermincutes species after the pH rises from around 3.2 to pH 5, and propionic and butyric acids are produced. Characterization of the spoilage microbiota is an important first step in efforts to prevent cucumber fermentation spoilage. PRACTICAL APPLICATION An understanding of the microorganisms that cause commercial cucumber fermentation spoilage may aid in developing methods to prevent the spoilage from occurring.
Collapse
Affiliation(s)
- Fred Breidt
- USDA-ARS, SAA Food Science Research Unit, North Carolina State University, Raleigh, NC 27695-7624, USA.
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Padmanabhan R, Lagier JC, Dangui NPM, Michelle C, Couderc C, Raoult D, Fournier PE. Non-contiguous finished genome sequence and description of Megasphaera massiliensis sp. nov. Stand Genomic Sci 2013; 8:525-38. [PMID: 24501636 PMCID: PMC3910696 DOI: 10.4056/sigs.4077819] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Megasphaera massiliensis strain NP3(T) sp. nov. is the type strain of Megasphaera massiliensis sp. nov., a new species within the genus Megasphaera. This strain, whose genome is described here, was isolated from the fecal flora of an HIV-infected patient. M. massiliensis is a Gram-negative, obligate anaerobic coccobacillus. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 2,661,757 bp long genome (1 chromosome but no plasmid) contains 2,577 protein-coding and 61 RNA genes, including 5 rRNA genes.
Collapse
Affiliation(s)
- Roshan Padmanabhan
- Aix-Marseille Université, URMITE, Faculté de médecine, Marseille, France
| | | | | | - Caroline Michelle
- Aix-Marseille Université, URMITE, Faculté de médecine, Marseille, France
| | - Carine Couderc
- Aix-Marseille Université, URMITE, Faculté de médecine, Marseille, France
| | - Didier Raoult
- Aix-Marseille Université, URMITE, Faculté de médecine, Marseille, France
| | | |
Collapse
|
39
|
Abstract
Brewing beer involves microbial activity at every stage, from raw material production and malting to stability in the package. Most of these activities are desirable, as beer is the result of a traditional food fermentation, but others represent threats to the quality of the final product and must be controlled actively through careful management, the daily task of maltsters and brewers globally. This review collates current knowledge relevant to the biology of brewing yeast, fermentation management, and the microbial ecology of beer and brewing.
Collapse
Affiliation(s)
- Nicholas A. Bokulich
- Department of Food Science and Technology, University of California, Davis, California, USA
- Department of Viticulture and Enology, University of California, Davis, California, USA
| | - Charles W. Bamforth
- Department of Food Science and Technology, University of California, Davis, California, USA
| |
Collapse
|
40
|
Zhang WW, Fang MX, Tan HQ, Zhang XQ, Wu M, Zhu XF. Pectinatus brassicae sp. nov., a Gram-negative, anaerobic bacterium isolated from salty wastewater. Int J Syst Evol Microbiol 2012; 62:2145-2149. [DOI: 10.1099/ijs.0.032144-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel Gram-negative, non-spore-forming, strictly anaerobic, heterotrophic bacterium, strain TYT, was isolated from salty pickle wastewater. Cells were rod-shaped with comb-like flagella, slightly curved and very variable in length. Optimal growth occurred at 28 °C and pH 6.5. Cells were resistant to up to 50 g NaCl l−1. Strain TYT produced acid from glycerol, sucrose, glucose, fructose and mannitol. The main fermentation products from glucose were acetic and propionic acids. Tests for acid phosphatase and naphthol-AS-BI-phosphohydrolase activities were positive. The major fatty acids were C14 : 0 DMA (18.7 %), C15 : 0 (15.4 %), anteiso-C18 : 1 (15.2 %), C11 : 0 (13.3 %) and summed feature 5 (C17 : 1ω7c and/or C17 : 2) (11.0 %). The DNA G+C content was 35.9 mol%. 16S rRNA gene sequence-based phylogenetic analysis indicated that strain TYT represented a novel species of the genus
Pectinatus
(sequence similarity to other members of the genus ranged from 93.2 to 94.8 %). Based on its phenotypic, genotypic and phylogenetic characteristics, strain TYT is proposed to represent a novel species, named Pectinatus brassicae sp. nov. (type strain TYT = JCM 17499T = DSM 24661T).
Collapse
Affiliation(s)
- Wen-wu Zhang
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Ming-xu Fang
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Hai-qin Tan
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Xin-qi Zhang
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Min Wu
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Xu-fen Zhu
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| |
Collapse
|
41
|
Silvetti T, Brasca M, Lodi R, Vanoni L, Chiolerio F, Groot M, Bravi A. Effects of Lysozyme on the Microbiological Stability and Organoleptic Properties of Unpasteurized Beer. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2010.tb00395.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
42
|
Suzuki K. 125th Anniversary Review: Microbiological Instability of Beer Caused by Spoilage Bacteria. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2011.tb00454.x] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
43
|
Paradh AD, Mitchell WJ, Hill AE. Occurrence of Pectinatus and Megasphaera in the Major UK Breweries. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2011.tb00497.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
44
|
Mamvura TA, Iyuke SE, Cluett JD, Paterson AE. Soil Films in the Beverage Industry: A Review. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2011.tb00511.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
45
|
Juvonen R, Haikara A. Amplification Facilitators and Pre-Processing Methods for PCR Detection of Strictly Anaerobic Beer-Spoilage Bacteria of the Class Clostridia in Brewery Samples. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2009.tb00365.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
46
|
Development of a 16S rRNA gene primer and PCR-restriction fragment length polymorphism method for rapid detection of members of the genus Megasphaera and species-level identification. Appl Environ Microbiol 2011; 77:5533-5. [PMID: 21705538 DOI: 10.1128/aem.00359-11] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The genus Megasphaera is relevant to the environment, human health and food, and renewable energy for the future. In this study, a primer set was designed for PCR-restriction fragment length polymorphism (RFLP) analyses to detect and identify the members of Megasphaera. Direct detection and identification were achieved for environmental samples and isolates.
Collapse
|
47
|
|
48
|
Rouse S, van Sinderen D. Bioprotective potential of lactic acid bacteria in malting and brewing. J Food Prot 2008; 71:1724-33. [PMID: 18724772 DOI: 10.4315/0362-028x-71.8.1724] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Lactic acid bacteria (LAB) are naturally associated with many foods or their raw ingredients and are popularly used in food fermentation to enhance the sensory, aromatic, and textural properties of food. These microorganisms are well recognized for their biopreservative properties, which are achieved through the production of antimicrobial compounds such as lactic acid, diacetyl, bacteriocins, and other metabolites. The antifungal activity of certain LAB is less well characterized, but organic acids, as yet uncharacterized proteinaceous compounds, and cyclic dipeptides can inhibit the growth of some fungi. A variety of microbes are carried on raw materials used in beer brewing, rendering the process susceptible to contamination and often resulting in spoilage or inferior quality of the finished product. The application of antimicrobial-producing LAB at various points in the malting and brewing process could help to negate this problem, providing an added hurdle for spoilage organisms to overcome and leading to the production of a higher quality beer. This review outlines the bioprotective potential of LAB and its application with specific reference to the brewing industry.
Collapse
Affiliation(s)
- Susan Rouse
- Department of Microbiology, Bioscience Institute, National University of Ireland, Western Road, Cork, Ireland
| | | |
Collapse
|
49
|
Juvonen R, Koivula T, Haikara A. Group-specific PCR-RFLP and real-time PCR methods for detection and tentative discrimination of strictly anaerobic beer-spoilage bacteria of the class Clostridia. Int J Food Microbiol 2008; 125:162-9. [PMID: 18502530 DOI: 10.1016/j.ijfoodmicro.2008.03.042] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 03/28/2008] [Accepted: 03/31/2008] [Indexed: 12/17/2022]
Abstract
The strictly anaerobic brewery contaminants of the genera Pectinatus, Megasphaera, Selenomonas and Zymophilus in the class Clostridia constitute an important group of spoilage bacteria of unpasteurised, packaged beers. The aim of this study was to develop and evaluate group-specific PCR methods to detect and differentiate these bacteria in beer. A group-specific primer pair targeting a 342-bp variable region of the 16S rRNA gene was designed and evaluated in end-point PCR with gel electrophoresis and in real-time PCR with SYBR Green I dye. Significant cross-reactions with DNAs from any of the forty-two brewery-related, non-target microbes or from real brewery samples were not detected in either PCR system. The group-specific end-point and real-time PCR products could be differentiated according to species/genus and spoilage potential using restriction fragment length polymorphism (KpnI, XmnI, BssHII, ScaI) and melting point curve analysis, respectively. In combination with a rapid DNA extraction method, the PCR reactions detected ca 10(0)-10(3) CFU per 25 ml of beer depending on the strain and on the PCR system. The end-point and real-time PCR analysis took 6-7 h and 2-3 h, respectively. Pre-PCR enrichment of beer samples for 1-3 days ensured the detection of even a single cultivable cell. The PCR and cultivation results of real brewery samples were mostly congruent but the PCR methods were occasionally more sensitive. The PCR methods developed allow the detection of all the nine beer-spoilage Pectinatus, Megasphaera, Selenomonas and Zymophilus species in a single reaction and their differentiation below group level and reduce the analysis time for testing of their presence in beer samples by 1-2 days. The methods can be applied for brewery routine quality control and for studying occurrence, diversity and numbers of the strictly anaerobic beer spoilers in the brewing process.
Collapse
|