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Ortiz-Cortés LY, Aréchiga-Carvajal ET, Ventura-Canseco LMC, Ruíz-Valdiviezo VM, Gutiérrez-Miceli FA, Alvarez-Gutiérrez PE. Analysis of phenotypic changes in high temperature and low pH extreme conditions of Alicyclobacillus sendaiensis PA2 related with the cell wall and sporulation genes. Arch Microbiol 2024; 206:53. [PMID: 38180563 DOI: 10.1007/s00203-023-03735-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/01/2023] [Accepted: 11/04/2023] [Indexed: 01/06/2024]
Abstract
The A. sendaiensis PA2 is a polyextremophile bacterium. In this study, we analyze the A. sendaiensis PA2 genome. The genome was assembled and annotated. The A. sendaiensis PA2 genome structure consists of a 2,956,928 bp long chromosome and 62.77% of G + C content. 3056 CDSs were predicted, and 2921 genes were assigned to a putative function. The ANIm and ANIb value resulted in 97.17% and 96.65%, the DDH value was 75.5%, and the value of TETRA (Z-score) was 0.98. Comparative genomic analyses indicated that three systems are enriched in A. sendaiensis PA2. This strain has phenotypic changes in cell wall during batch culture at 65 °C, pH 5.0 and without carbon and nitrogen source. The presence of unique genes of cell wall and sporulation subsystem could be related to the adaptation of A. sendaiensis PA2 to hostile conditions.
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Affiliation(s)
- Lourdes Yaret Ortiz-Cortés
- Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km 1080, Col. Terán, 29050, Tuxtla Gutiérrez, Chiapas, México
| | | | | | - Victor Manuel Ruíz-Valdiviezo
- Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km 1080, Col. Terán, 29050, Tuxtla Gutiérrez, Chiapas, México
| | - Federico Antonio Gutiérrez-Miceli
- Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km 1080, Col. Terán, 29050, Tuxtla Gutiérrez, Chiapas, México
| | - Peggy Elizabeth Alvarez-Gutiérrez
- Tecnológico Nacional de México/IT de Tuxtla Gutiérrez, Carretera Panamericana Km 1080, Col. Terán, 29050, Tuxtla Gutiérrez, Chiapas, México.
- CONAHCYT/IT de Tuxtla Gutiérrez, Carretera Panamericana Km 1080, Col. Terán, 29050, Tuxtla Gutiérrez, Chiapas, México.
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2
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Sraphet S, Javadi B. Computational analysis of carboxylesterase genes and proteins in non-pathogenic food bacterium Alicyclobacillus acidocaldarius: insights from proteogenomics. World J Microbiol Biotechnol 2023; 39:348. [PMID: 37855845 DOI: 10.1007/s11274-023-03805-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/13/2023] [Indexed: 10/20/2023]
Abstract
Over recent years, Alicyclobacillus acidocaldarius, a Gram-positive nonpathogenic rod-shaped thermo-acid-tolerant bacterium, has posed numerous challenges for the fruit juice industry. However, the bacterium's unique characteristics, particularly its nonpathogenic and thermophilic capabilities, offer significant opportunities for genetic exploration by biotechnologists. This study presents the computational proteogenomics report on the carboxylesterase (CE) enzyme in A. acidocaldarius, shedding light on structural and evolutional of CEs from this bacterium. Our analysis revealed that the average molecular weight of CEs in A. acidocaldarius was 41 kDa, with an isoelectric point around 5. The amino acid composition favored negative amino acids over positive ones. The aliphatic index and hydropathicity were approximately 88 and - 0.15, respectively. While the protein sequence showed no disulfide bonds in the CEs' structure, the presence of Cys amino acids was observed in the structure of CEs. Phylogenetic analysis presented more than 99% similarity between CEs, indicating their close evolutionary relationship. By applying homology modeling, the 3-dimensional structural models of the carboxylesterase were constructed, which with the help of structural conservation and solvent accessibility analysis highlighted key residues and regions responsible for enzyme stability and conformation. The specific patterns presented the total solvent accessibility of less than 25 (Å2) was in considerable position as well as Gly residues were noticeably have high accessibility to solvent in all structures. Ala was the more frequent amino acids in the conserved-SASA of carboxylesterases. Furthermore, unsupervised agglomerative hierarchical clustering based on solvent accessibility feature successfully clustered and even distinguished this enzyme from proteases from the same genome. These findings contribute to a deeper understanding of the nonpathogenic A. acidocaldarius carboxylesterase and its potential applications in biotechnology. Additionally, structural analysis of CEs would help to address potential solutions in fruit juice industry with utilization of computational structural biology.
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Affiliation(s)
- Supajit Sraphet
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, 73170, Thailand
| | - Bagher Javadi
- Department of Sciences, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand.
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Kim HW, Kim NK, Phillips APR, Parker DA, Liu P, Whitaker RJ, Rao CV, Mackie RI. Genomic insight and physiological characterization of thermoacidophilic Alicyclobacillus isolated from Yellowstone National Park. Front Microbiol 2023; 14:1232587. [PMID: 37822751 PMCID: PMC10562698 DOI: 10.3389/fmicb.2023.1232587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/14/2023] [Indexed: 10/13/2023] Open
Abstract
Introduction Alicyclobacillus has been isolated from extreme environments such as hot springs, volcanoes, as well as pasteurized acidic beverages, because it can tolerate extreme temperatures and acidity. In our previous study, Alicyclobacillus was isolated during the enrichment of methane oxidizing bacteria from Yellowstone Hot Spring samples. Methods Physiological characterization and genomic exploration of two new Alicyclobacillus isolates, AL01A and AL05G, are the main focus of this study to identify their potential relationships with a thermoacidophilic methanotroph (Methylacidiphilum) isolated from the same hot spring sediments. Results and discussion In the present study, both Alicyclobacillus isolates showed optimal growth at pH 3.5 and 55°C, and contain ω-alicyclic fatty acids as a major lipid (ca. 60%) in the bacterial membrane. Genomic analysis of these strains revealed specific genes and pathways that the methanotroph genome does not have in the intermediary carbon metabolism pathway such as serC (phosphoserine aminotransferase), comA (phosphosulfolactate synthase), and DAK (glycerone kinase). Both Alicyclobacillus strains were also found to contain transporter systems for extracellular sulfate (ABC transporter), suggesting that they could play an important role in sulfur metabolism in this extreme environment. Genomic analysis of vitamin metabolism revealed Alicyclobacillus and Methylacidiphilum are able to complement each other's nutritional deficiencies, resulting in a mutually beneficial relationship, especially in vitamin B1(thiamin), B3 (niacin), and B7 (biotin) metabolism. These findings provide insights into the role of Alicyclobacillus isolates in geothermal environments and their unique metabolic adaptations to these environments.
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Affiliation(s)
- Hye Won Kim
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Materials Research Laboratory, Energy and Biosciences Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Na Kyung Kim
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Materials Research Laboratory, Energy and Biosciences Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Alex P. R. Phillips
- Department of Microbiology, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - David A. Parker
- Materials Research Laboratory, Energy and Biosciences Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Westhollow Technology Center, Shell Exploration and Production Inc., Houston, TX, United States
| | - Ping Liu
- Materials Research Laboratory, Energy and Biosciences Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Westhollow Technology Center, Shell Exploration and Production Inc., Houston, TX, United States
| | - Rachel J. Whitaker
- Department of Microbiology, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Christopher V. Rao
- Materials Research Laboratory, Energy and Biosciences Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Roderick I. Mackie
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Materials Research Laboratory, Energy and Biosciences Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Champaign, IL, United States
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Sinninghe Damsté JS, Rijpstra WIC, Huber KJ, Albuquerque L, Egas C, Bale NJ. Dominance of mixed ether/ester, intact polar membrane lipids in five species of the order Rubrobacterales: Another group of bacteria not obeying the "lipid divide". Syst Appl Microbiol 2023; 46:126404. [PMID: 36868099 DOI: 10.1016/j.syapm.2023.126404] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/26/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023]
Abstract
The composition of the core lipids and intact polar lipids (IPLs) of five Rubrobacter species was examined. Methylated (ω-4) fatty acids (FAs) characterized the core lipids of Rubrobacter radiotolerans, R. xylanophilus and R. bracarensis. In contrast, R. calidifluminis and R. naiadicus lacked ω-4 methyl FAs but instead contained abundant (i.e., 34-41 % of the core lipids) ω-cyclohexyl FAs not reported before in the order Rubrobacterales. Their genomes contained an almost complete operon encoding proteins enabling production of cyclohexane carboxylic acid CoA thioester, which acts as a building block for ω-cyclohexyl FAs in other bacteria. Hence, the most plausible explanation for the biosynthesis of these cyclic FAs in R. calidifluminis and R. naiadicus is a recent acquisition of this operon. All strains contained 1-O-alkyl glycerol ether lipids in abundance (up to 46 % of the core lipids), in line with the dominance (>90 %) of mixed ether/ester IPLs with a variety of polar headgroups. The IPL head group distribution of R. calidifluminis and R. naiadicus differed, e.g. they lacked a novel IPL tentatively assigned as phosphothreoninol. The genomes of all five Rubrobacter species contained a putative operon encoding the synthesis of the 1-O-alkyl glycerol phosphate, the presumed building block of mixed ether/ester IPLs, which shows some resemblance with an operon enabling ether lipid production in various other aerobic bacteria but requires more study. The uncommon dominance of mixed ether/ester IPLs in Rubrobacter species exemplifies our recent growing awareness that the lipid divide between archaea and bacteria/eukaryotes is not as clear cut as previously thought.
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Affiliation(s)
- Jaap S Sinninghe Damsté
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, Texel, the Netherlands; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, the Netherlands.
| | - W Irene C Rijpstra
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, Texel, the Netherlands
| | - Katharina J Huber
- Department of Microorganisms, Leibniz-Institute DSMZ - Deutsche Sammlung von Mikroorganismen und Zellkulturen, D-38124 Braunschweig, Germany
| | - Luciana Albuquerque
- CNC - Center for Neuroscience and Cell Biology, UC-Biotech, Biocant Park, 3060-197, Cantanhede, Portugal
| | - Conceição Egas
- CNC - Center for Neuroscience and Cell Biology, UC-Biotech, Biocant Park, 3060-197, Cantanhede, Portugal; BIOCANT - Transfer Technology Association, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Nicole J Bale
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, Texel, the Netherlands
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Wahia H, Fakayode OA, Mustapha AT, Zhou C, Dabbour M. Application and potential of multifrequency ultrasound in juice industry: Comprehensive analysis of inactivation and germination of Alicyclobacillus acidoterrestris spores. Crit Rev Food Sci Nutr 2022; 64:4561-4586. [PMID: 36412233 DOI: 10.1080/10408398.2022.2143475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The majority of acidic fruits are perishable owing to their high-water activity, which promotes microbial activity, thus exhibiting metabolic functions that cause spoilage. Along with sanitary practices, several treatments are used during processing and/or storage to inhibit the development of undesirable bacteria. To overcome the challenges caused by mild heat treatment, juice manufacturers have recently increased their involvement in developing novel non-thermal processing procedures. Ultrasonication alone or in combination with other hurdle technologies may be used to pasteurize processed fruit juices. Multifrequency ultrasound has gained popularity due to the fact that mono-frequency ultrasound has less impact on bacterial inactivation and bioactive compound enhancement of fruit juice. Here, we present and discuss the fundamental information and technological knowledge of how spoilage bacteria, specifically Alicyclobacillus acidoterrestris, assemble resistant spores and inactivate and germinate dormant spores in response to nutrient germinants and physical treatments such as heat and ultrasound. To the authors' knowledge, no prior review of ultrasonic inactivation and germination of A. acidoterrestris in fruit juice exists. Therefore, this article aims to provide a review of previously published research on the inactivation and germination of A. acidoterrestris in fruit juice by ultrasound and heat.
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Affiliation(s)
- Hafida Wahia
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, PR China
| | | | | | - Cunshan Zhou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, PR China
- School of Biological and Food Engineering, Chuzhou University, Chuzhou, PR China
| | - Mokhtar Dabbour
- Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Benha University, Moshtohor, Qaluobia, Egypt
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Gamboa P, Worsfold J, Davidovich G, Acosta O, Usaga J. Headspace control and antimicrobials: inhibition strategies to prevent growth of Alicyclobacillus acidoterrestris in orange juice. Lett Appl Microbiol 2022; 75:1203-1214. [PMID: 35862481 DOI: 10.1111/lam.13788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 05/16/2022] [Accepted: 07/03/2022] [Indexed: 11/30/2022]
Abstract
Alicyclobacillus acidoterrestris can cause spoilage in orange juice that leads to consumer rejection. Six different orange juices were physiochemically characterized (pH, total soluble solids, titratable acidity, total polyphenols and vitamin C). A bottle for each sampling point per juice was filled (headspace: 40% volume) and inoculated with 102 - 103 CFU ml-1 of A. acidoterrestris ATCC® 49025™ (heat shocked before inoculation: 75°C, 20 min). Samples were stored for 21 d at 45 ± 1°C and plate counted periodically on acidified YSG agar (pH 3.7) incubated at 45 ± 1°C for 3 d. The effect of headspace (6% versus 40% volume) on A. acidoterrestris growth was also evaluated. The effect of nisin (0.006%, 0.003%, 0.0015%, and 0.00075%), sodium benzoate (0.1%), potassium sorbate (0.1%), and a mix of benzoate and sorbate (0.05% each) on A. acidoterrestris was additionally addressed. A. acidoterrestris reached up to 107 CFU ml-1 in five of the six juices in less than one week. Headspace significantly impacted (P<0.05) A. acidoterrestris maximum population, which reached the critical value of 5 log CFU ml-1 at 40% headspace. All preservatives, regardless of concentration, showed a bacteriostatic effect during 22 d of storage with no significant differences among treatments (P>0.05).
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Affiliation(s)
- Paola Gamboa
- Escuela de Tecnología de Alimentos, Universidad de Costa Rica (UCR), Ciudad Universitaria Rodrigo Facio, Código Postal 11501-2060, San José, Costa Rica
| | - Jessica Worsfold
- Escuela de Tecnología de Alimentos, Universidad de Costa Rica (UCR), Ciudad Universitaria Rodrigo Facio, Código Postal 11501-2060, San José, Costa Rica
| | - Gabriela Davidovich
- Escuela de Tecnología de Alimentos, Universidad de Costa Rica (UCR), Ciudad Universitaria Rodrigo Facio, Código Postal 11501-2060, San José, Costa Rica.,Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Ciudad Universitaria Rodrigo Facio, Código Postal 11501-2060, San José, Costa Rica
| | - Oscar Acosta
- Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Ciudad Universitaria Rodrigo Facio, Código Postal 11501-2060, San José, Costa Rica
| | - Jessie Usaga
- Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Ciudad Universitaria Rodrigo Facio, Código Postal 11501-2060, San José, Costa Rica
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A Case of Predominance of Alicyclobacillus tolerans in Microbial Community during Bioleaching of Pentlandite-Chalcopyrite Concentrate. MINERALS 2022. [DOI: 10.3390/min12040396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bacterial isolates assigned to the species Alicyclobacillus tolerans, which occupies an intermediate position between an organotrophic genus Alicyclobacillus and mixotrophic genus Sulfobacillus, were revealed as members of the acidophilic chemolithotrophic community during stirred-tank bioleaching of violarite–pentlandite–chalcopyrite concentrate at 40 °C. Surprisingly, this species succeeded more common iron-oxidizing community members after a series of bioleaching processes in bioreactors. The possibility of mixotrophic and organoheterotrophic growth of Al. tolerans, tolerance to low pH values (1.0–1.15), as well as preservation of cells via sporulation under unfavorable conditions, may explain its key role in the bioleaching of the copper–nickel bulk concentrate. Isolation of two other sulfur-oxidizing pure cultures dominating the microbial community, together with their phylogenetic characterization, allowed the assignment of these isolates to the species Acidithiobacillus caldus. This and other studies of acidophilic microbial communities are important for the development and intensification of the bioleaching processes, including a biobeneficiation approach previously proposed by us.
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Weishaupt I, Neubauer P, Schneider J. Near-infrared spectroscopy for the inline classification and characterization of fruit juices for a product-customized flash pasteurization. Food Sci Nutr 2022; 10:800-812. [PMID: 35311170 PMCID: PMC8907734 DOI: 10.1002/fsn3.2709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/22/2021] [Accepted: 12/17/2021] [Indexed: 11/17/2022] Open
Abstract
The feasibility of inline classification and characterization of seven fruit juice varieties was investigated by the application of near‐infrared spectroscopy (NIRS) combined with chemometrics. The findings are intended to be used to optimize the flash pasteurization of liquid foods. More precise information of the kind of product in real time had to be achieved to enable a more product‐specific process. Using the method of partial least squares discriminant analysis, the fruit juice varieties were classified, showing a classification rate of 100% regarding an internal and 69% regarding an external test sets. A characterization by the extract content, pH value, turbidity, and viscosity was made by fitting a partial least squares regression model. The percentage prediction error of the pH value was <3% for internal and external test sets, and for the Brix value prediction errors were about 4% (internal) and 20% (external). The parameters viscosity and turbidity were found to be unsuitable. Despite this, the strategy applied to gain more product‐specific information in real time showed to be feasible. By linking the results to a database containing potentially harmful microorganisms for various types of fruit juices, a more product‐specific calculation of the necessary heat input can be performed. To demonstrate the practical relevance, a comparison between conventional and product‐adapted process control was performed using two fruit varieties as examples in case of Alicyclobacillus acidoterrestris. Thus, with more accurate product information, achieved through the use of NIRS with chemometrics, a more precise calculation of the heat input can be achieved.
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Affiliation(s)
- Imke Weishaupt
- Institute for Life Science Technologies ILT.NRW Department of Life Science Technologies OWL University of Applied Sciences and Arts Lemgo Germany
| | - Peter Neubauer
- Bioprocess Engineering Department of Biotechnology Technische Universität Berlin Berlin Germany
| | - Jan Schneider
- Institute for Life Science Technologies ILT.NRW Department of Life Science Technologies OWL University of Applied Sciences and Arts Lemgo Germany
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A rapid one-step process for the isolation of antibacterial peptides by silica-decorated Fe3O4nanoparticles. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112858] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Dutra TV, de Menezes JL, Mizuta AG, de Oliveira A, Moreira TFM, Barros L, Mandim F, Pereira C, Gonçalves OH, Leimann FV, Mikcha JMG, Machinski Junior M, Abreu Filho BAD. Use of nanoencapsulated curcumin against vegetative cells and spores of Alicyclobacillus spp. in industrialized orange juice. Int J Food Microbiol 2021; 360:109442. [PMID: 34688124 DOI: 10.1016/j.ijfoodmicro.2021.109442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 10/08/2021] [Accepted: 10/13/2021] [Indexed: 10/20/2022]
Abstract
Pathogenic and deteriorating bacteria are a great concern to food safety. In this sense, the present study evaluated the fight against microbial contamination through the use of nanoparticles containing curcumin, in addition to analyzing the physical properties of these nanoparticles. Efficient curcumin encapsulation was determined by Fourier transform infrared spectra evaluation and differential scanning calorimetry. Transmission electron microscopy images showed irregular shaped nanoparticles with broad size distribution (20-250 nm). The antibacterial activity was considered satisfactory, since curcumin in the form of nanoparticles demonstrated antimicrobial and antibacterial activity superior to curcumin in its free form, against both pathogenic bacteria, such as Staphylococcus aureus (MIC 125 μg/mL), and deteriorates, such as Alicyclobacillus acidoterrestris (MIC 62.5 μg/mL). Since curcumin nanoparticles may be consumed as a food additive, the bioactive properties of the nanoencapsulated curcumin were also evaluated in relation to antioxidant capacity (Thiobarbituric acid reactive substances (TBARS) and oxidative hemolysis inhibition assays) and cytotoxicity against four carcinoma cell lines, as well as two non-tumor cells. As a proof of concept, nanoparticles were incorporated in orange juice, with the juice maintaining satisfactory pH, °Brix, and color stability, during three days of storage (8 °C).
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Affiliation(s)
- Tatiane Viana Dutra
- Graduate Program in Food Science (PPC), State University of Maringá (UEM), Av. Colombo, 5790, 87020-900 Maringá, Brazil
| | - Jéssica Lima de Menezes
- Graduate Program in Food Science (PPC), State University of Maringá (UEM), Av. Colombo, 5790, 87020-900 Maringá, Brazil
| | - Amanda Gouveia Mizuta
- Graduate Program in Food Science (PPC), State University of Maringá (UEM), Av. Colombo, 5790, 87020-900 Maringá, Brazil
| | - Anielle de Oliveira
- Graduate Program in Food Science (PPC), State University of Maringá (UEM), Av. Colombo, 5790, 87020-900 Maringá, Brazil; Graduate Program in Food Technology (PPGTA), Federal Technological University of Paraná, Campus Campo Mourão (UTFPR-CM), Via Rosalina Maria dos Santos, 1233, 87301-899, Campo Mourão, Brazil
| | - Thaysa Fernandes Moya Moreira
- Graduate Program in Food Science (PPC), State University of Maringá (UEM), Av. Colombo, 5790, 87020-900 Maringá, Brazil; Graduate Program in Food Technology (PPGTA), Federal Technological University of Paraná, Campus Campo Mourão (UTFPR-CM), Via Rosalina Maria dos Santos, 1233, 87301-899, Campo Mourão, Brazil
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Filipa Mandim
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Carla Pereira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Odinei Hess Gonçalves
- Graduate Program in Food Technology (PPGTA), Federal Technological University of Paraná, Campus Campo Mourão (UTFPR-CM), Via Rosalina Maria dos Santos, 1233, 87301-899, Campo Mourão, Brazil; Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Fernanda Vitória Leimann
- Graduate Program in Food Technology (PPGTA), Federal Technological University of Paraná, Campus Campo Mourão (UTFPR-CM), Via Rosalina Maria dos Santos, 1233, 87301-899, Campo Mourão, Brazil; Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Jane Martha Graton Mikcha
- Department of Clinical Analysis and Biomedicine, State University of Maringá, Av. Colombo, 5790, Maringá, 87020-900, Paraná, Brazil
| | - Miguel Machinski Junior
- Department of Basic Health Sciences, State University of Maringa, Av. Colombo, 5790, Maringá, 87020-900 Paraná, Brazil
| | - Benício Alves de Abreu Filho
- Graduate Program in Food Science (PPC), State University of Maringá (UEM), Av. Colombo, 5790, 87020-900 Maringá, Brazil; Department of Basic Health Sciences, State University of Maringa, Av. Colombo, 5790, Maringá, 87020-900 Paraná, Brazil.
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11
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Evaluation of temperature, pH and nutrient conditions in bacterial growth and extracellular hydrolytic activities of two Alicyclobacillus spp. strains. Arch Microbiol 2021; 203:4557-4570. [PMID: 34159433 DOI: 10.1007/s00203-021-02332-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 04/08/2021] [Accepted: 04/11/2021] [Indexed: 12/16/2022]
Abstract
Extremophile bacteria have developed the metabolic machinery for living in extreme temperatures, pH, and high-salt content. Two novel bacterium strains Alicyclobacillus sp. PA1 and Alicyclobacillus sp. PA2, were isolated from crater lake El Chichon in Chiapas, Mexico. Phylogenetic tree analysis based on the 16SrRNA gene sequence revealed that the strain Alicyclobacillus sp. PA1 and Alicyclobacillus sp. PA2 were closely related to Alicyclobacillus species (98% identity and 94.73% identity, respectively). Both strains were Gram variable, and colonies were circular, smooth and creamy. Electron microscopy showed than Alicyclobacillus sp. PA1 has a daisy-like form and Alicyclobacillus sp. PA2 is a regular rod. Both strains can use diverse carbohydrates and triglycerides as carbon source and they also can use organic and inorganic nitrogen source. But, the two strains can grow without any carbon or nitrogen sources in the culture medium. Temperature, pH and nutrition condition affect bacterial growth. Maximum growth was produced at 65 °C for Alicyclobacillus sp. PA1 (0.732 DO600) at pH 3 and Alicyclobacillus sp. PA2 (0.725 DO600) at pH 5. Inducible extracellular extremozyme activities were determined for β-galactosidase (Alicyclobacillus sp. PA1: 88.07 ± 0.252 U/mg, Alicyclobacillus sp. PA2: 51.57 ± 0.308 U/mg), cellulose (Alicyclobacillus sp. PA1: 141.20 ± 0.585 U/mg, Alicyclobacillus sp. PA2: 51.57 ± 0.308 U/mg), lipase (Alicyclobacillus sp. PA1: 138.25 ± 0.600 U/mg, Alicyclobacillus sp. PA2: 175.75 ± 1.387 U/mg), xylanase (Alicyclobacillus sp. PA1: 174.72 ± 1.746 U/mg, Alicyclobacillus sp. PA2: 172.69 ± 0.855U/mg), and protease (Alicyclobacillus sp. PA1: 15.12 ± 0.121 U/mg, Alicyclobacillus sp. PA2: 15.33 ± 0.284 U/mg). These results provide new insights on extreme enzymatic production on Alicyclobacillus species.
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Aulitto M, Gallo G, Puopolo R, Mormone A, Limauro D, Contursi P, Piochi M, Bartolucci S, Fiorentino G. Genomic Insight of Alicyclobacillus mali FL18 Isolated From an Arsenic-Rich Hot Spring. Front Microbiol 2021; 12:639697. [PMID: 33897644 PMCID: PMC8060452 DOI: 10.3389/fmicb.2021.639697] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/05/2021] [Indexed: 12/24/2022] Open
Abstract
Extreme environments are excellent places to find microorganisms capable of tolerating extreme temperature, pH, salinity pressure, and elevated concentration of heavy metals and other toxic compounds. In the last decades, extremophilic microorganisms have been extensively studied since they can be applied in several fields of biotechnology along with their enzymes. In this context, the characterization of heavy metal resistance determinants in thermophilic microorganisms is the starting point for the development of new biosystems and bioprocesses for environmental monitoring and remediation. This work focuses on the isolation and the genomic exploration of a new arsenic-tolerant microorganism, classified as Alicyclobacillus mali FL18. The bacterium was isolated from a hot mud pool of the solfataric terrains in Pisciarelli, a well-known hydrothermally active zone of the Campi Flegrei volcano near Naples in Italy. A. mali FL18 showed a good tolerance to arsenite (MIC value of 41 mM), as well as to other metals such as nickel (MIC 30 mM), cobalt, and mercury (MIC 3 mM and 17 μM, respectively). Signatures of arsenic resistance genes (one arsenate reductase, one arsenite methyltransferase, and several arsenite exporters) were found interspersed in the genome as well as several multidrug resistance efflux transporters that could be involved in the export of drugs and heavy metal ions. Moreover, the strain showed a high resistance to bacitracin and ciprofloxacin, suggesting that the extreme environment has positively selected multiple resistances to different toxic compounds. This work provides, for the first time, insights into the heavy metal tolerance and antibiotic susceptibility of an Alicyclobacillus strain and highlights its putative molecular determinants.
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Affiliation(s)
- Martina Aulitto
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Giovanni Gallo
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
- Institute of Polymers, Composites and Biomaterials (IPCB), Consiglio Nazionale delle Ricerche CNR, Pozzuoli, Italy
| | - Rosanna Puopolo
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Angela Mormone
- Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli Osservatorio Vesuviano, Naples, Italy
| | - Danila Limauro
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Patrizia Contursi
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Monica Piochi
- Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli Osservatorio Vesuviano, Naples, Italy
| | - Simonetta Bartolucci
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Gabriella Fiorentino
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Naples, Italy
- Institute of Polymers, Composites and Biomaterials (IPCB), Consiglio Nazionale delle Ricerche CNR, Pozzuoli, Italy
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Luong TSV, Moir C, Bowman JP, Chandry PS. Heat resistance and genomics of spoilage Alicyclobacillus spp. Isolated from fruit juice and fruit-based beverages. Food Microbiol 2020; 94:103662. [PMID: 33279087 DOI: 10.1016/j.fm.2020.103662] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 09/14/2020] [Accepted: 10/09/2020] [Indexed: 11/28/2022]
Abstract
Alicyclobacillus acidoterrestris is a spore-forming bacterium of importance to the fruit juice industry due to its remarkable heat resistance and production of guaiacol taint. Whole genome sequencing analysis reveals species demarcation corresponds to the two major genotypic groups to which A. acidoterrestris isolates belong. Heat resistance was significantly different between genotypic groups 1 and 2 with D90 values of 15.5 and 9.3 min, respectively (p < 0.01). Comparison of squalene-hopene cyclase (shc) encoding sequences reveals non-synonymous changes and the alteration of glutamine residues. Glutamine absence may link to the stability reinforcement of the enzyme structure against thermal denaturation. Genomic islands harbouring heavy metal resistance genes are found in the majority of genotypic group 1 genomes (63%) but occurs in only one genome (5%) of genotypic group 2. Distribution of the genomic islands in the genotypic groups 1 and 2 is also consistent with phylogenetic trees and ANI and dDDH values. Subsequently, we propose genotypic group 1 as a new species closely related to A. acidoterrestris that possesses enhanced heat resistance.
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Affiliation(s)
- Thi Song Van Luong
- CSIRO Agriculture and Food, North Ryde, 2113, New South Wales, Australia; Centre for Food Safety and Innovation, Tasmanian Agriculture Institute, University of Tasmania, Hobart, 7005, Tasmania, Australia.
| | - Catherine Moir
- CSIRO Agriculture and Food, North Ryde, 2113, New South Wales, Australia
| | - John P Bowman
- Centre for Food Safety and Innovation, Tasmanian Agriculture Institute, University of Tasmania, Hobart, 7005, Tasmania, Australia.
| | - P Scott Chandry
- CSIRO Agriculture and Food, Werribee, 3030, Victoria, Australia
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14
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Maintaining Physicochemical, Microbiological, and Sensory Quality of Pineapple Juice (Ananas comosus, Var. ‘Queen Victoria’) through Mild Heat Treatment. Processes (Basel) 2020. [DOI: 10.3390/pr8091186] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Shelf life of freshly prepared pineapple juice is short and requires refrigerated conditions of storage. Mild heat treatment remains the easiest way to prolong juice shelf life for small companies. This study was constructed to assess pineapple cv. Queen Victoria juice shelf life from a broad examination of its quality and to propose the most appropriate thermal treatment to increase shelf life without any perceptible decrease in quality. From 25 independent batches of pineapple, collected in different areas and seasons from Reunion Island, the variability of juice physicochemical and microbiological quality was determined. Juice pH values were the highest for fruit harvested in summer, but the juice acidity remained low enough to prevent pathogen spore-forming bacteria growth. During storage at 4 °C, color was modified, and yeasts and molds were the main microbial group exhibiting growth. Assessment of sensory quality resulted in the proposal of a shelf life comprising between three and seven days. Compared to higher temperatures, heat treatment at 60 °C was enough to ensure a good microbiological quality for 30 days, but sensory characteristics and color changes led to the proposal of a shelf life of seven days for pineapple juice treated at 60 °C.
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15
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Murphy J, Ryan MP, Walsh G. Purification and Characterization of a Novel β-Galactosidase From the Thermoacidophile Alicyclobacillus vulcanalis. Appl Biochem Biotechnol 2020; 191:1190-1206. [DOI: 10.1007/s12010-020-03233-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 01/08/2020] [Indexed: 10/25/2022]
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16
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Sánchez-López KB, De Los Santos-Ramos FJ, Gómez-Acata ES, Luna-Guido M, Navarro-Noya YE, Fernández-Luqueño F, Dendooven L. TiO 2 nanoparticles affect the bacterial community structure and Eisenia fetida (Savigny, 1826) in an arable soil. PeerJ 2019; 7:e6939. [PMID: 31380145 PMCID: PMC6661143 DOI: 10.7717/peerj.6939] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 04/11/2019] [Indexed: 01/08/2023] Open
Abstract
The amount of nanoparticles (NP), such as TiO2, has increased substantially in the environment. It is still largely unknown, however, how NP might interact with earthworms and organic material and how this might affect the bacterial community structure and their functionality. Therefore, an arable soil was amended with TiO2 NP at 0, 150 or 300 mg kg−1 and subjected to different treatments. Treatments were soil amended with ten earthworms (Eisenia fetida (Savigny, 1826)) with fully developed clitellum and an average fresh mass of 0.5 to 500 g dry soil, 1.75 g tyndallized Quaker® oat seeds Avena sativa (L.) kg−1, or earthworms plus oat seeds, or left unamended. The bacterial community structure was monitored throughout the incubation period. The bacterial community in the unamended soil changed over time and application of oats, earthworm and a combination of both even further, with the largest change found in the latter. Application of NP to the unamended soil and the earthworm-amended soil altered the bacterial community, but combining it by adding oats negated that effect. It was found that the application of organic material, that is, oats, reduced the effect of the NP applied to soil. However, as the organic material applied was mineralized by the soil microorganisms, the effect of NP increased again over time.
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Affiliation(s)
- Katia Berenice Sánchez-López
- Nanoscience and Nanotechnology Program, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Francisco J De Los Santos-Ramos
- Department of Physiology, Biophysics and Neuroscience, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Elizabeth Selene Gómez-Acata
- Department of Biotechnology, Centro de investigación y de estudios avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Marco Luna-Guido
- Department of Biotechnology, Centro de investigación y de estudios avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Yendi E Navarro-Noya
- CONACYT Cathedra, Tlaxcala Center of the Behavior Biology, Autonomous University of Tlaxcala, Tlaxcala, Mexico
| | - Fabián Fernández-Luqueño
- Nanoscience and Nanotechnology Program, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Luc Dendooven
- Department of Biotechnology, Centro de investigación y de estudios avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
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Effects of diluents, temperature and pH on the enumeration and growth kinetics of Alicyclobacillus acidoterrestris in standard growth media. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.01.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Touré S, Barthélémy M, Sorres J, Genta-Jouve G, Dusfour I, Eparvier V, Stien D. Mucorolactone, a Macrolactone from Mucor sp. SNB-VECD13A, a Fungus Isolated from the Cuticle of a Vespidae Species. Org Lett 2018; 20:3780-3783. [PMID: 29923409 DOI: 10.1021/acs.orglett.8b01367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The newly discovered macrolactone, mucorolactone, along with eight known compounds, was isolated from an ethyl acetate extract of the insect-borne fungus Mucor sp. All structures were elucidated using 1D and 2D NMR and MS spectroscopic experiments. Relative and absolute configurations of the original skeleton of mucorolactone was deduced from NOESY experiments, from the 13C NMR chemical shift calculation based on the DP4 probability method, and from the comparison of experimental and calculated electronic circular dichroism spectra.
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Affiliation(s)
- Seindé Touré
- CNRS, Institut de Chimie des Substances Naturelles (ICSN), UPR2301, Université Paris-Sud , 1 avenue de la terrasse , 91198 Gif-sur-Yvette , France
| | - Morgane Barthélémy
- CNRS, Institut de Chimie des Substances Naturelles (ICSN), UPR2301, Université Paris-Sud , 1 avenue de la terrasse , 91198 Gif-sur-Yvette , France
| | - Jonathan Sorres
- CNRS, Institut de Chimie des Substances Naturelles (ICSN), UPR2301, Université Paris-Sud , 1 avenue de la terrasse , 91198 Gif-sur-Yvette , France
| | - Grégory Genta-Jouve
- C-TAC, UMR 8638 CNRS, Faculté de Pharmacie de Paris , Université Paris Descartes , Sorbonne Paris Cité, 4 Avenue de l'Observatoire , 75006 Paris , France
| | - Isabelle Dusfour
- Institut Pasteur de la Guyane (IPG), Unité de Contrôle et Adaptation des Vecteurs, 97306 Cayenne , French Guiana
| | - Véronique Eparvier
- CNRS, Institut de Chimie des Substances Naturelles (ICSN), UPR2301, Université Paris-Sud , 1 avenue de la terrasse , 91198 Gif-sur-Yvette , France
| | - Didier Stien
- Sorbonne Université , CNRS, Laboratoire de Biodiversité et Biotechnologie Microbienne, USR3579, Observatoire Océanologique, 66650 Banyuls-sur-mer , France
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19
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Prado DBD, Fernandes MDS, dos Anjos MM, Tognim MCB, Nakamura CV, Machinski Junior M, Mikcha JMG, de Abreu Filho BA. Biofilm-forming ability ofAlicyclobacillusspp. isolates from orange juice concentrate processing plant. J Food Saf 2018. [DOI: 10.1111/jfs.12466] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniela Biral do Prado
- Postgraduate Program in Food Science; State University of Maringá; Maringá Paraná Brazil
| | - Meg da Silva Fernandes
- Postgraduate Program in Food Science; State University of Maringá; Maringá Paraná Brazil
| | - Márcia Maria dos Anjos
- Postgraduate Program in Food Science; State University of Maringá; Maringá Paraná Brazil
| | | | - Celso Vataru Nakamura
- Department of Basic Health Sciences; State University of Maringá; Maringá Paraná Brazil
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20
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Abstract
The endospore-forming bacteria have persisted on earth perhaps 3Ga, leveraging the flexibility of their distinctive lifestyle to adapt to a remarkably wide range of environments. This process of adaptation can be investigated through the simple but powerful technique of laboratory evolution. Evolved strains can be analyzed by whole genome sequencing and an array of omics technologies. The intensively studied, genetically tractable endospore-former, Bacillus subtilis, is an ideal subject for laboratory evolution experiments. Here, we describe the use of the B. subtilis model system to study the adaptation of these bacteria to reduced and stringent selection for endospore formation, as well as to novel environmental challenges of low atmospheric pressure, high ultraviolet radiation, and unfavourable growth temperatures. In combination with other approaches, including comparative genomics and environmental field work, laboratory evolution may help elucidate how these bacteria have so successfully adapted to life on earth, and perhaps beyond.
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Affiliation(s)
- Daniel R Zeigler
- Bacillus Genetic Stock Center, The Ohio State University, Columbus, OH, USA
| | - Wayne L Nicholson
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
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