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Batista-Barwinski MJ, Butzke-Souza N, Radetski-Silva R, Tiegs F, Laçoli R, Venturieri GA, Miller PRM, Branco JO, Ariente-Neto R, Radetski CM. Slaughterhouse by-products composting: can microorganisms inoculum addition mitigate final compost odor emission? JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2024; 59:131-141. [PMID: 38314812 DOI: 10.1080/03601234.2024.2312063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Small slaughterhouses generate biowaste, which for economic reasons, is generally destined for composting. Inoculating appropriate microorganisms can improve biodegradation efficiency and mitigate odor generation during the composting process and can give rise to composts with neutral or pleasant odors. Therefore, the aim of this study was to compare the odor intensity reduction of compost generated with and without a formulated inoculum (Saccharomyces cerevisiae, Bacillus subtilis, and Rhodopseudomonas palustris). A set of experimental data was collected and analyzed according to the German "Verein Deutscher Ingenieure" odor protocol. The results showed that adding microorganisms was effective in reducing unpleasant odors in all three composts generated from swine, cattle, and poultry slaughterhouse by-products during both summer and winter seasons. Additionally, soil odor was predominant in composts that were inoculated in the two tested seasons (i.e., summer and winter). On the other hand, composts without inoculation had odors similar to peat for swine compost, ammonia for cattle compost, and manure for poultry compost, regardless of the season tested. Overall, composting process with appropriate inoculum can help in the correct disposal of slaughterhouse wastes by transforming organic matter into composts, which can have economic and environmental value as a soil conditioner and/or fertilizer.
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Affiliation(s)
| | - Nicolli Butzke-Souza
- Laboratório de Remediação Ambiental, Universidade do Vale do Itajaí, Itajaí, Brazil
| | - Ramaiana Radetski-Silva
- Curso de Mestrado em Tecnologia e Ambiente, Instituto Federal Catarinense - Campus Araquari, Araquari, Brazil
| | - Frankie Tiegs
- Curso de Mestrado em Tecnologia e Ambiente, Instituto Federal Catarinense - Campus Araquari, Araquari, Brazil
| | - Rosane Laçoli
- Laboratório de Remediação Ambiental, Universidade do Vale do Itajaí, Itajaí, Brazil
| | - Giorgini A Venturieri
- Programa de Pós-Graduação em Agroecossistemas, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Paul Richard M Miller
- Programa de Pós-Graduação em Agroecossistemas, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Joaquim O Branco
- Programa de Pós-Graduação em Ciência e Tecnologia Ambiental, Universidade do Vale do Itajaí, Itajaí, Brazil
| | - Rafael Ariente-Neto
- Curso de Engenharia de Produção, Universidade Federal do Paraná (UFPR), Campus Jandaia do Sul, Jandaia do Sul, Brazil
| | - Claudemir M Radetski
- Programa de Pós-Graduação em Ciência e Tecnologia Ambiental, Universidade do Vale do Itajaí, Itajaí, Brazil
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Liu G, Mamode Ally N, Dooly DD, Li Y, Boodhoo K, Neetoo H. A study on the effectiveness of a defined microbial consortium to enhance the microbiological safety of cattle manure. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:2614-2620. [PMID: 33063345 DOI: 10.1002/jsfa.10886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/07/2020] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Animal manure frequently harbors pathogenic microorganisms such as Salmonella spp. and diarrheagenic Escherichia coli. A defined microbial consortium such as effective microorganisms (EM) can potentially be used as a biocontrol against manure-borne human pathogens such as Salmonella and pathogenic E. coli. The objective of the study was to investigate the efficacy of EM to decontaminate cattle manure. RESULTS EM was first characterized by enumeration and identification of lactic acid bacteria (LAB), yeasts, actinomycetes and phototrophic bacteria (PB). The population density of LAB, yeasts, actinomycetes and presumptive PB was 6.9, 5.2, 5.9 and 3.9 log CFU g-1 respectively. LAB and yeast isolates were molecularly confirmed as Lactobacillus plantarum and L. casei (LAB) and Yarrowia lipolytica, Rhodotorula mucilaginosa and Picha manshurica (yeasts) respectively. Culture-independent molecular analysis revealed the presence of additional species including L. parabuchneri and Enterococcus faecium (LAB) and bacterial spore-formers Bacillus cereus and Clostridium spp. Application of EM to fresh cattle manure, inoculated with ~5-6 log CFU g-1 of antibiotic-resistant strain of indicator organism E. coli ATCC 25922, resulted in complete elimination of the organism in 20 days, while survivors were still detected in the untreated counterpart. CONCLUSION EM can potentially be used for sustainable pathogen control in cattle manure for enhanced food safety and environmental health. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Guoxia Liu
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | | | | | - Yin Li
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | | | - Hudaa Neetoo
- Faculty of Agriculture, University of Mauritius, Reduit, Mauritius
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3
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Sepúlveda-Muñoz CA, de Godos I, Puyol D, Muñoz R. A systematic optimization of piggery wastewater treatment with purple phototrophic bacteria. CHEMOSPHERE 2020; 253:126621. [PMID: 32278906 DOI: 10.1016/j.chemosphere.2020.126621] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/10/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
The increase in natural water bodies pollution caused by intensive animal farming requires the development of innovative sustainable treatment processes. This study assessed the influence of piggery wastewater (PWW) load, air dosing, CO2/NaHCO3- supplementation and pH control on PWW treatment by mixed cultures of purple phototrophic bacteria (PPB) under infrared radiation in batch photobioreactors. PPB was not able to grow in raw PWW but PWW dilution prevented inhibition and supported an effective light penetration. Despite the fact that PPB were tolerant to O2, carbon recovery decreased in the presence of air (induced by stripping). CO2 supplementation was identified as an effective strategy to maximize the removal of carbon during PPB-based PWW treatment with removal efficiencies of 72% and 74% for TOC and VFAs. However, the benefits derived from CO2 addition were induced by the indirect pH control exerted in the cultivation medium. Thus, PPB supported an optimal pollutant removal performance at pH 7, with removal efficiencies of 75%, 39% and 98% for TOC, TN and VFAs.
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Affiliation(s)
- Cristian A Sepúlveda-Muñoz
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain; Institute of Sustainable Processes, Dr. Mergelina, s/n, 47011 Valladolid, Spain
| | - Ignacio de Godos
- Institute of Sustainable Processes, Dr. Mergelina, s/n, 47011 Valladolid, Spain; School of Forestry, Agronomic and Bioenergy Industry Engineering (EIFAB), University of Valladolid, Campus Duques de Soria, 42004, Soria, Spain
| | - Daniel Puyol
- Department of Chemical and Environmental Technology, ESCET, King Juan Carlos University, 28933, Móstoles, Madrid, Spain
| | - Raúl Muñoz
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain; Institute of Sustainable Processes, Dr. Mergelina, s/n, 47011 Valladolid, Spain.
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4
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Wang X, Liu X, Lu S, Liu C, Gu Z, Zeng X, Ni Q. Culture of attached and suspended Rhodopseudomonas faecalis in the presence of decomposing fish feed. Microbiologyopen 2019; 8:e924. [PMID: 31482697 PMCID: PMC6925157 DOI: 10.1002/mbo3.924] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 11/26/2022] Open
Abstract
An approach to culturing attached and suspended forms of Rhodopseudomonas faecalis by using compound fish feed with tap water in transparent containers is reported in this study. The ratio of fish feed to tap water was 14.3–50.8 g/L, and no other inoculum or substances were added during the culture process. When the ratio of fish feed to tap water was 14.3 g/L, the highest total nitrogen, total phosphorus, and total dissolved carbon content recorded in the water in the containers were approximately 730 mg/L, 356 mg/L, and 1,620 mg/L, respectively, during the process of feed decay. Comamonas, Rhodopseudomonas, and Clostridium successively dominated during the culture process. Rhodopseudomonas was the most common dominant genus in both the attached and suspended forms when the water was dark red, and the relative operational taxonomic unit abundance reached 80‒89% and 24.8%, respectively. The dominant species was R. faecalis. The maximum thickness of attached bacteria and the biomass of attached Rhodopseudomonas reached up to 0.56 mm and 7.5 mg/cm2, respectively. This study provides a method for the mass culture of Rhodopseudomonas by using the fermentation of aquatic compound fish feed.
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Affiliation(s)
- Xiaodong Wang
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai, China
| | - Xingguo Liu
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai, China
| | - Shimin Lu
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai, China
| | - Chong Liu
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai, China
| | - Zhaojun Gu
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai, China
| | - Xianlei Zeng
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai, China
| | - Qi Ni
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fisheries Sciences, Shanghai, China
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Fredriksson NJ, Hermansson M, Wilén BM. Long-term dynamics of the bacterial community in a Swedish full-scale wastewater treatment plant. ENVIRONMENTAL TECHNOLOGY 2019; 40:912-928. [PMID: 29187074 DOI: 10.1080/09593330.2017.1411396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 09/07/2017] [Indexed: 06/07/2023]
Abstract
The operational efficiency of activated sludge wastewater treatment plants depends to a large extent on the microbial community structure of the activated sludge. The aims of this paper are to describe the composition of the bacterial community in a Swedish full-scale activated sludge wastewater treatment plant, to describe the dynamics of the community and to elucidate possible causes for bacterial community composition changes. The bacterial community composition in the activated sludge was described using 16S rRNA gene libraries and monitored for 15 months by a terminal restriction fragment (T-RF) length polymorphism (T-RFLP) analysis of the 16S rRNA gene. Despite variable environmental conditions, a large fraction of the observed T-RFs were present at all times, making up at least 50% in all samples, possibly representing a relatively stable core fraction of the bacterial community. However, the proportions of the different T-RFs in this fraction as well as the T-RFs in the more variable fraction showed a significant variation over time and temperature. The difference in community composition between summer and winter coincided with observed differences in floc structure. These observations suggest a relationship between floc properties and bacterial community composition, although additional experiments are required to determine causality.
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Affiliation(s)
- Nils Johan Fredriksson
- a Department of Architecture and Civil Engineering, Water Environment Technology , Chalmers University of Technology , Gothenburg , Sweden
| | - Malte Hermansson
- b Department of Chemistry and Molecular Biology, Microbiology , University of Gothenburg , Gothenburg , Sweden
| | - Britt-Marie Wilén
- a Department of Architecture and Civil Engineering, Water Environment Technology , Chalmers University of Technology , Gothenburg , Sweden
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Strazzera G, Battista F, Garcia NH, Frison N, Bolzonella D. Volatile fatty acids production from food wastes for biorefinery platforms: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 226:278-288. [PMID: 30121464 DOI: 10.1016/j.jenvman.2018.08.039] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/05/2018] [Accepted: 08/07/2018] [Indexed: 05/28/2023]
Abstract
Volatile fatty acids (VFAs) are a class of largely used compounds in the chemical industry, serving as starting molecules for bioenergy production and for the synthesis of a variety of products, such as biopolymers, reduced chemicals and derivatives. Because of the huge amounts of food waste generated from household and processing industry, 47 and 17 million tons per year respectively only in the EU-28 Countries, food wastes can be the right candidate for volatile fatty acids production. This review investigates all the major topics involved in the optimization of VFAs production from food wastes. Regarding the best operative conditions for the anaerobic fermenter controlled pH in the neutral range (6.0-7.0), short HRT (lower than 10 days), thermophilic temperatures and an organic loading rate of about 10 kgVS/m3d, allowed for an increase in the VFAs concentration between 10 and 25%. It was also found that additions of mineral acids, from 0.5 to 3.0%, and thermal pretreatment in the range 140-170 °C increase the organic matter solubilisation. Applications of VFAs considered in this study were biofuels and bioplastics production as well as nutrients removal in biological wastewater treatment processes.
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Affiliation(s)
- Giuseppe Strazzera
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Federico Battista
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy.
| | - Natalia Herrero Garcia
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Nicola Frison
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - David Bolzonella
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134, Verona, Italy
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Mitchell SL, Blumberg EA, Edelstein PH. Bacteremia caused by the photosynthetic environmental bacterium Rhodopseudomonas. J Infect Chemother 2017; 23:720-723. [PMID: 28438461 DOI: 10.1016/j.jiac.2017.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/14/2017] [Accepted: 04/01/2017] [Indexed: 10/19/2022]
Abstract
We report a case of persistent Rhodopseudomonas bacteremia in a patient two months after an allogeneic bone marrow transplant for acute myeloid leukemia. The bacteremia persisted until IV catheter removal. To our knowledge, this is the first report of Rhodopseudomonas causing infection in humans.
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Affiliation(s)
- Stephanie L Mitchell
- Department of Pathology and Laboratory Medicine, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Emily A Blumberg
- Division of Infectious Diseases, Department of Medicine, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Paul H Edelstein
- Department of Pathology and Laboratory Medicine, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States.
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8
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Nunkaew T, Kantachote D, Chaiprapat S, Nitoda T, Kanzaki H. Use of wood vinegar to enhance 5-aminolevulinic acid production by selected Rhodopseudomonas palustris in rubber sheet wastewater for agricultural use. Saudi J Biol Sci 2016; 25:642-650. [PMID: 29740228 PMCID: PMC5936994 DOI: 10.1016/j.sjbs.2016.01.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 12/28/2015] [Accepted: 01/15/2016] [Indexed: 11/16/2022] Open
Abstract
This study aimed to produce inexpensive 5-aminolevulinic acid (ALA) in a non-sterile latex rubber sheet wastewater (RSW) by Rhodopseudomonas palustris TN114 and PP803 for the possibility to use in agricultural purposes by investigating the optimum conditions, and applying of wood vinegar (WV) as an economical source of levulinic acid to enhance ALA content. The Box-Behnken Design experiment was conducted under microaerobic-light conditions for 96 h with TN114, PP803 and their mixed culture (1:1) by varying initial pH, inoculum size (% v/v) and initial chemical oxygen demand (COD, mg/L). Results showed that the optimal condition (pH, % inoculum size, COD) of each set to produce extracellular ALA was found at 7.50, 6.00, 2000 for TN114; 7.50, 7.00, 3000 for PP803; and 7.50, 6.00, 4000 for a mixed culture; and each set achieved COD reduction as high as 63%, 71% and 75%, respectively. Addition of the optimal concentration of WV at mid log phase at 0.63% for TN114, and 1.25% for PP803 and the mixed culture significantly increased the ALA content by 3.7-4.2 times (128, 90 and 131 μM, respectively) compared to their controls. ALA production cost could be reduced approximately 31 times with WV on the basis of the amount of levulinic acid used. Effluent containing ALA for using in agriculture could be achieved by treating the RSW with the selected ALA producer R. palustris strains under the optimized condition with a little WV additive.
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Affiliation(s)
- Tomorn Nunkaew
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat-Yai 90112, Thailand
| | - Duangporn Kantachote
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat-Yai 90112, Thailand.,Center of Excellence on Hazardous Substance Management (HSM), Bangkok 10330, Thailand
| | - Sumate Chaiprapat
- Center of Excellence on Hazardous Substance Management (HSM), Bangkok 10330, Thailand.,Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Hat-Yai 90112, Thailand
| | - Teruhiko Nitoda
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-naka, Kita-Ku, Okayama 700-8530, Japan
| | - Hiroshi Kanzaki
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-naka, Kita-Ku, Okayama 700-8530, Japan
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9
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Sharma N, Doerner KC, Alok PC, Choudhary M. Skatole remediation potential of Rhodopseudomonas palustris WKU-KDNS3 isolated from an animal waste lagoon. Lett Appl Microbiol 2015; 60:298-306. [PMID: 25495851 DOI: 10.1111/lam.12379] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 11/25/2014] [Accepted: 12/01/2014] [Indexed: 11/29/2022]
Abstract
UNLABELLED Skatole (3MI) is a major contributor to the malodor emission resulting from ruminant and human faeces. The remediation of malodor has been a major challenge for the animal production industry. In this investigation, a pure culture of purple nonsulphur bacterium capable of degrading 3MI was isolated from a swine waste lagoon using an enrichment technique and identified as Rhodopseudomonas palustris WKU-KDNS3 based on 16S rRNA analysis and UV-visible spectroscopy. The cell structure of the organism was confirmed by transmission electron microscopy. Growth profile and 3MI removal pattern were determined using media supplemented with 0.1 μmol 3MI under short-term and long-term aerobic growth conditions. The organism grew on 3MI media as luxuriantly as control (without 3MI). Growth of R. palustris WKU-KDNS3 demonstrated a significant reduction in the level of 3MI (>48%) in 72 h. The level of 3MI dropped further by >93% of the total concentration present in the medium in 21 days. Skatole remediation potential of R. palustris WKU-KDNS3 can be judiciously utilized in various animal and industrial waste treatment systems. SIGNIFICANCE AND IMPACT OF THE STUDY Odour pollution is a serious environmental problem, particularly in the agriculture industry, and technologies based on chemical remediation are less effective and cost prohibitive. In this study, the newly isolated Rhodopseudomonas palustris strain WKU-KDNS3 causes biodegradation of 3-methylindole (skatole), which is one of the most offensive odorants present in wastewater lagoons. Aerobic degradation of this widely spread aromatic pollutant by Rhodopseudomonas strain is a significant finding that enhances the present understanding about metabolic versatility of purple photosynthetic nonsulphur bacteria. The remediation potential of R. palustris WKU-KDNS3 can also be gainfully utilized in various waste treatment facilities.
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Affiliation(s)
- N Sharma
- Department of Biology, Western Kentucky University, Bowling Green, KY, USA
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Kornochalert N, Kantachote D, Chaiprapat S, Techkarnjanaruk S. Use of Rhodopseudomonas palustris P1 stimulated growth by fermented pineapple extract to treat latex rubber sheet wastewater to obtain single cell protein. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0739-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Belila A, Gtari M, Ghrabi A, Hassen A. Purple anoxygenic phototrophic bacteria distribution in Tunisian wastewater stabilisation plant exhibiting red water phenomenon. ANN MICROBIOL 2009. [DOI: 10.1007/bf03175122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Okamura K, Hisada T, Kanbe T, Hiraishi A. Rhodovastum atsumiense gen. nov., sp. nov., a phototrophic alphaproteobacterium isolated from paddy soil. J GEN APPL MICROBIOL 2009; 55:43-50. [PMID: 19282632 DOI: 10.2323/jgam.55.43] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A photoorganotrophic alphaproteobacterium designated strain G2-11(T) was isolated from submerged paddy soil. This bacterium had relatively large, oval to rod-shaped cells (2.0-3.0x3.0-10 microm). Cells were motile by means of single polar flagella. The color of phototrophically growing cultures was reddish-brown. The cell extract had absorption maxima at 375, 465, 492, 529, 592, 804, and 844 nm, indicating the presence of bacteriochlorophyll a and carotenoides of the spirilloxanthin series. Vesicular intracytoplasmic membranes were present. The main component of cellular fatty acids was C(18:1)omega7c. Ubiquinone-10 and rhodoquinone-10 were the major quinones. A 16S rRNA gene sequence analysis revealed that the isolate is closest to the acidophilic aerobic photosynthetic bacterium Acidisphaera rubrifaciens strain HS-AP3(T) (93.3% similarity). The G+C content of genomic DNA is 67.8 mol%. The name Rhodovastum atsumiense gen. nov., sp. nov. is proposed for the novel isolate. The type strain is strain G2-11(T) (=NBRC 104268(T)=KCTC 5708(T)).
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Affiliation(s)
- Keiko Okamura
- Department of Ecological Engineering, Toyohashi University of Technology, Japan
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Okamura K, Takata K, Hiraishi A. Intrageneric relationships of members of the genus Rhodopseudomonas. J GEN APPL MICROBIOL 2009; 55:469-78. [DOI: 10.2323/jgam.55.469] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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14
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Okamura K, Hisada T, Hiraishi A. Characterization of thermotolerant purple nonsulfur bacteria isolated from hot-spring Chloroflexus mats and the reclassification of “Rhodopseudomonas cryptolactis” Stadtwald-Demchick et al.1990 as Rhodoplanes cryptolactis nom. rev., comb. nov. J GEN APPL MICROBIOL 2007; 53:357-61. [DOI: 10.2323/jgam.53.357] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Okubo Y, Hiraishi A. Population Dynamics and Acetate Utilization Kinetics of Two Different Species of Phototrophic Purple Nonsulfur Bacteria in a Continuous Co-culture System. Microbes Environ 2007. [DOI: 10.1264/jsme2.22.82] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yoko Okubo
- Department of Ecological Engineering, Toyohashi University of Technology
| | - Akira Hiraishi
- Department of Ecological Engineering, Toyohashi University of Technology
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16
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Khan ST, Horiba Y, Takahashi N, Hiraishi A. Activity and Community Composition of Denitrifying Bacteria in Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-Using Solid-phase Denitrification Processes. Microbes Environ 2007. [DOI: 10.1264/jsme2.22.20] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Shams Tabrez Khan
- Department of Ecological Engineering, Toyohashi University of Technology
| | - Yoko Horiba
- Department of Ecological Engineering, Toyohashi University of Technology
| | - Naoto Takahashi
- Department of Ecological Engineering, Toyohashi University of Technology
| | - Akira Hiraishi
- Department of Ecological Engineering, Toyohashi University of Technology
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17
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Hisada T, Okamura K, Hiraishi A. Isolation and Characterization of Phototrophic Purple Nonsulfur Bacteria from Chloroflexus and Cyanobacterial Mats in Hot Springs. Microbes Environ 2007. [DOI: 10.1264/jsme2.22.405] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Takayoshi Hisada
- Department of Ecological Engineering, Toyohashi University of Technology
- TechnoSuruga Co, Ltd
| | - Keiko Okamura
- Department of Ecological Engineering, Toyohashi University of Technology
| | - Akira Hiraishi
- Department of Ecological Engineering, Toyohashi University of Technology
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18
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Okubo Y, Futamata H, Hiraishi A. Characterization of phototrophic purple nonsulfur bacteria forming colored microbial mats in a swine wastewater ditch. Appl Environ Microbiol 2006; 72:6225-33. [PMID: 16957249 PMCID: PMC1563592 DOI: 10.1128/aem.00796-06] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The community structure of pink-colored microbial mats naturally occurring in a swine wastewater ditch was studied by culture-independent biomarker and molecular methods as well as by conventional cultivation methods. The wastewater in the ditch contained acetate and propionate as the major carbon nutrients. Thin-section electron microscopy revealed that the microbial mats were dominated by rod-shaped cells containing intracytoplasmic membranes of the lamellar type. Smaller numbers of oval cells with vesicular internal membranes were also found. Spectroscopic analyses of the cell extract from the biomats showed the presence of bacteriochlorophyll a and carotenoids of the spirilloxanthin series. Ubiquinone-10 was detected as the major quinone. A clone library of the photosynthetic gene, pufM, constructed from the bulk DNA of the biomats showed that all of the clones were derived from members of the genera Rhodobacter and Rhodopseudomonas. The dominant phototrophic bacteria from the microbial mats were isolated by cultivation methods and identified as being of the genera Rhodobacter and Rhodopseudomonas by studying 16S rRNA and pufM gene sequence information. Experiments of oxygen uptake with lower fatty acids revealed that the freshly collected microbial mats and the Rhodopseudomonas isolates had a wider spectrum of carbon utilization and a higher affinity for acetate than did the Rhodobacter isolates. These results demonstrate that the microbial mats were dominated by the purple nonsulfur bacteria of the genera Rhodobacter and Rhodopseudomonas, and the bioavailability of lower fatty acids in wastewater is a key factor allowing the formation of visible microbial mats with these phototrophs.
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Affiliation(s)
- Yoko Okubo
- Ecological Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441-8580, Japan
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Yoshida N, Fujii Y, Hiraishi A. A Modified Cyanoditolyl Tetrazolium Reduction Method for Differential Detection of Metabolically Active Gram-positive and Gram-negative Bacteria. Microbes Environ 2006. [DOI: 10.1264/jsme2.21.272] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Naoko Yoshida
- Department of Ecological Engineering, Toyohashi University of Technology
| | - Yasuyuki Fujii
- Department of Ecological Engineering, Toyohashi University of Technology
| | - Akira Hiraishi
- Department of Ecological Engineering, Toyohashi University of Technology
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