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Akulava V, Tafintseva V, Blazhko U, Kohler A, Miamin U, Valentovich L, Shapaval V. Global biochemical profiling of fast-growing Antarctic bacteria isolated from meltwater ponds by high-throughput FTIR spectroscopy. PLoS One 2024; 19:e0303298. [PMID: 38885224 PMCID: PMC11182503 DOI: 10.1371/journal.pone.0303298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 04/22/2024] [Indexed: 06/20/2024] Open
Abstract
Fourier transform infrared (FTIR) spectroscopy is a biophysical technique used for non-destructive biochemical profiling of biological samples. It can provide comprehensive information about the total cellular biochemical profile of microbial cells. In this study, FTIR spectroscopy was used to perform biochemical characterization of twenty-nine bacterial strains isolated from the Antarctic meltwater ponds. The bacteria were grown on two forms of brain heart infusion (BHI) medium: agar at six different temperatures (4, 10, 18, 25, 30, and 37°C) and on broth at 18°C. Multivariate data analysis approaches such as principal component analysis (PCA) and correlation analysis were used to study the difference in biochemical profiles induced by the cultivation conditions. The observed results indicated a strong correlation between FTIR spectra and the phylogenetic relationships among the studied bacteria. The most accurate taxonomy-aligned clustering was achieved with bacteria cultivated on agar. Cultivation on two forms of BHI medium provided biochemically different bacterial biomass. The impact of temperature on the total cellular biochemical profile of the studied bacteria was species-specific, however, similarly for all bacteria, lipid spectral region was the least affected while polysaccharide region was the most affected by different temperatures. The biggest temperature-triggered changes of the cell chemistry were detected for bacteria with a wide temperature tolerance such Pseudomonas lundensis strains and Acinetobacter lwoffii BIM B-1558.
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Affiliation(s)
- Volha Akulava
- Faculty of Science and Technology, Norwegian University of Life Sciences, Ås, Norway
| | - Valeria Tafintseva
- Faculty of Science and Technology, Norwegian University of Life Sciences, Ås, Norway
| | - Uladzislau Blazhko
- Faculty of Science and Technology, Norwegian University of Life Sciences, Ås, Norway
| | - Achim Kohler
- Faculty of Science and Technology, Norwegian University of Life Sciences, Ås, Norway
| | | | - Leonid Valentovich
- Institute of Microbiology, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Volha Shapaval
- Faculty of Science and Technology, Norwegian University of Life Sciences, Ås, Norway
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2
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Hugot C, Poirier M, Spatz M, Da Costa G, Michaudel C, Lapiere A, Danne C, Martin V, Langella P, Sokol H, Michel ML, Boyaval P, Richard ML. Cyberlindnera jadinii and Kluyveromyces lactis, two fungi used in food processes, have potential probiotic effects on gut inflammation. mSystems 2023; 8:e0084123. [PMID: 37882535 PMCID: PMC10734524 DOI: 10.1128/msystems.00841-23] [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: 08/14/2023] [Accepted: 09/06/2023] [Indexed: 10/27/2023] Open
Abstract
IMPORTANCE The food industry has always used many strains of microorganisms including fungi in their production processes. These strains have been widely characterized for their biotechnological value, but we still know very little about their interaction capacities with the host at a time when the intestinal microbiota is at the center of many pathologies. In this study, we characterized five yeast strains from food production which allowed us to identify two new strains with high probiotic potential and beneficial effects in a model of intestinal inflammation.
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Affiliation(s)
- Cindy Hugot
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Maxime Poirier
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Madeleine Spatz
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Gregory Da Costa
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Chloé Michaudel
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Alexia Lapiere
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Camille Danne
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Valérie Martin
- International Flavors and Fragrances, Neuilly-sur-Seine, France
| | - Philippe Langella
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Harry Sokol
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
- Gastroenterology Department, INSERM, Centre de Recherche Saint-Antoine, CRSA, AP-HP, Saint Antoine Hospital, Sorbonne Université, Paris, France
| | - Marie-Laure Michel
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
| | - Patrick Boyaval
- International Flavors and Fragrances, Neuilly-sur-Seine, France
| | - Mathias L. Richard
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Paris Center for Microbiome Medicine, Fédération Hospitalo-Universitaire, Paris, France
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3
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Cebi N, Bekiroglu H, Erarslan A. Nondestructive Metabolomic Fingerprinting: FTIR, NIR and Raman Spectroscopy in Food Screening. Molecules 2023; 28:7933. [PMID: 38067662 PMCID: PMC10707828 DOI: 10.3390/molecules28237933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023] Open
Abstract
In recent years, there has been renewed interest in the maintenance of food quality and food safety on the basis of metabolomic fingerprinting using vibrational spectroscopy combined with multivariate chemometrics. Nontargeted spectroscopy techniques such as FTIR, NIR and Raman can provide fingerprint information for metabolomic constituents in agricultural products, natural products and foods in a high-throughput, cost-effective and rapid way. In the current review, we tried to explain the capabilities of FTIR, NIR and Raman spectroscopy techniques combined with multivariate analysis for metabolic fingerprinting and profiling. Previous contributions highlighted the considerable potential of these analytical techniques for the detection and quantification of key constituents, such as aromatic amino acids, peptides, aromatic acids, carotenoids, alcohols, terpenoids and flavonoids in the food matrices. Additionally, promising results were obtained for the identification and characterization of different microorganism species such as fungus, bacterial strains and yeasts using these techniques combined with supervised and unsupervised pattern recognition techniques. In conclusion, this review summarized the cutting-edge applications of FTIR, NIR and Raman spectroscopy techniques equipped with multivariate statistics for food analysis and foodomics in the context of metabolomic fingerprinting and profiling.
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Affiliation(s)
- Nur Cebi
- Food Engineering Department, Chemical-Metallurgical Faculty, Yıldız Technical University, 34210 Istanbul, Turkey;
| | - Hatice Bekiroglu
- Food Engineering Department, Chemical-Metallurgical Faculty, Yıldız Technical University, 34210 Istanbul, Turkey;
- Food Engineering Department, Faculty of Agriculture, Sirnak University, 73300 Sirnak, Turkey
| | - Azime Erarslan
- Bioengineering Department, Chemical-Metallurgical Faculty, Yıldız Technical University, 34210 Istanbul, Turkey;
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4
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Limongelli R, Minervini F, Calasso M. Fermentation of pomegranate matrices with Hanseniaspora valbyensis to produce a novel food ingredient. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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5
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Cardinali F, Foligni R, Ferrocino I, Harasym J, Orkusz A, Franciosa I, Milanović V, Garofalo C, Mannozzi C, Mozzon M, Cocolin L, Osimani A, Aquilanti L. Microbial diversity, morpho-textural characterization, and volatilome profile of the Portuguese thistle-curdled cheese Queijo da Beira Baixa PDO. Food Res Int 2022; 157:111481. [DOI: 10.1016/j.foodres.2022.111481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/02/2022] [Accepted: 06/04/2022] [Indexed: 11/04/2022]
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Abstract
In this research communication we report on the diversity of yeast and mould species in 69 samples of milk and different dairy products from three plants located in Umbria, central Italy. Isolates were characterised both macroscopically and microscopically and then identified by PCR and genome sequencing of the ITS region and the D1-D2 domain of the large-subunit rRNA gene for filamentous fungi and yeasts, respectively. Out of the 69 samples analysed, 51 (73.9%) tested positive for the presence of yeasts, whereas moulds were detected in 25 (36.2%) samples. A total of 9 yeast species belonging to 8 different genera and 13 mould species belonging to 6 different genera were isolated. The most common genera isolated were Debaryomyces and Kluyveromyces among the yeasts and Penicillium and Galactomyces among the moulds. Microbiota play a key role in the formation of flavour, aroma, texture and appearance of dairy products. This complex microbial ecosystem includes both cultured and external bacteria, yeasts and moulds. Some of them have an important role in the production of cheeses, whereas others are responsible for dairy product spoilage, resulting in significant food waste and economic losses. Some species can produce mycotoxins, representing a potential hazard for the consumer's safety. This study provides interesting information on the diversity of fungi species in dairy products from central Italy that can be of major importance to identify these products and to develop adequate strategies for fungal spoilage control and consumer safety.
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Yildiz M, Turgut T, Cetin B, Kesmen Z. Microbiological characteristics and identification of yeast microbiota of traditional mouldy civil cheese. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2020.104955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Conti A, Casagrande Pierantoni D, Robert V, Cardinali G, Corte L. Homoplasy as an Auxiliary Criterion for Species Delimitation. Microorganisms 2021; 9:273. [PMID: 33525600 PMCID: PMC7911335 DOI: 10.3390/microorganisms9020273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 01/09/2023] Open
Abstract
Homoplasy is a sort of noise in phylogenetic reconstructions, due to the accumulation of backmutations, convergent evolution and horizontal gene transfer (HGT), which is considered the major trigger of homoplasy in microorganism for its massive presence. It is also known that homoplasy increases with the complexity of the tree with both real and simulated data. In this paper, we analyzed the variation of homoplasy with the two widely used taxonomic markers ITS and LSU in four taxonomic models characterized by differences in the intra-specific distances. An algorithm (HomoDist) was developed to analyze the homoplasy index (HI) variation upon addition of a single element (strain or species) in increasing distance from a starting element. This algorithm allows to follow changes of the consistency index (CI), complementary to the HI, with the increase of the number of taxa and with the increase of the distance among elements. Results show that homoplasy increases-as expected-with the number of taxa, but also as a function of the overall distance among species, often with an almost linear relationship between distance and HI. No HI change was observed in trees with few taxa spanning through short distances, indicating that this noise is not prohibitive in this context, although the analysis of the ratio between HI and distance can be recommended as a criterion for tree acceptance. The absence of large changes of the HI within the species, and its increase when new species are added by HomoDist, suggest that homoplasy variation can be used as an auxiliary test in distance-based species delimitation with any type of marker.
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Affiliation(s)
- Angela Conti
- Department of Pharmaceutical Sciences, University of Perugia, 06121 Perugia, Italy; (A.C.); (D.C.P.); (L.C.)
| | | | - Vincent Robert
- Westerdjik Institute for Biodiversity, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands;
| | - Gianluigi Cardinali
- Department of Pharmaceutical Sciences, University of Perugia, 06121 Perugia, Italy; (A.C.); (D.C.P.); (L.C.)
- CEMIN Excellence Research Centre, via Elce di Sotto 8, 06123 Perugia, Italy
| | - Laura Corte
- Department of Pharmaceutical Sciences, University of Perugia, 06121 Perugia, Italy; (A.C.); (D.C.P.); (L.C.)
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9
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Perri G, Calabrese FM, Rizzello CG, De Angelis M, Gobbetti M, Calasso M. Sprouting process affects the lactic acid bacteria and yeasts of cereal, pseudocereal and legume flours. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109314] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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10
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Giampaoli S, De Vittori E, Frajese G, Paytuví A, Sanseverino W, Anselmo A, Barni F, Berti A. A semi-automated protocol for NGS metabarcoding and fungal analysis in forensic. Forensic Sci Int 2020; 306:110052. [DOI: 10.1016/j.forsciint.2019.110052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 09/04/2019] [Accepted: 11/11/2019] [Indexed: 11/29/2022]
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11
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Spectroscopic Characterization of Bovine, Avian and Johnin Purified Protein Derivative (PPD) with High-Throughput Fourier Transform InfraRed-Based Method. Pathogens 2019; 8:pathogens8030136. [PMID: 31470609 PMCID: PMC6789744 DOI: 10.3390/pathogens8030136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/24/2019] [Accepted: 08/26/2019] [Indexed: 11/16/2022] Open
Abstract
Tuberculins purified protein derivatives (PPDs) are obtained by precipitation from heat treated mycobacteria. PPDs are used in diagnosis of mycobacterial infections in humans and animals. Bovine PPD (PPDB) is obtained from Mycobacterium bovis (Mycobacterium tuberculosis complex), while Avian PPD (PPDA) and Johnin PPD (PPDJ) are extracted, respectively, from Mycobacterium avium and M. avium subsp. paratuberculosis (M. avium complex). PPDB and PPDA are used for bovine tuberculosis diagnosis, while PPDJ is experimentally used in the immunodiagnosis of paratuberculosis. Although PPDs date back to the 19th Century, limited knowledge about their composition is currently available. The goal of our study was to evaluate Fourier Transform InfraRed (FTIR) spectroscopy as a tool to differentiate PPDB, PPDA, and three PPDJs. The results highlighted that the three PPDs have specific profiles, correlated with phylogenetic characteristics of mycobacteria used for their production. This analysis is eligible as a specific tool for different PPDs batches characterization and for the assessment of their composition. The entire PPD production may be efficiently controlled, since the N content of each preparation is related to IR spectra, with a reference spectrum for each PPD and a standardized analysis protocol.
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12
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Cardinali G, Corte L, Robert V. Next Generation Sequencing: problems and opportunities for next generation studies of microbial communities in food and food industry. Curr Opin Food Sci 2017. [DOI: 10.1016/j.cofs.2017.09.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Effect of chestnut tannin extract ( Castanea sativa Miller) on the proliferation of Cladosporium cladosporioides on sheep cheese rind during the ripening. Int Dairy J 2017. [DOI: 10.1016/j.idairyj.2016.10.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Current and Future Perspectives on the Structural Identification of Small Molecules in Biological Systems. Metabolites 2016; 6:metabo6040046. [PMID: 27983674 PMCID: PMC5192452 DOI: 10.3390/metabo6040046] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 12/04/2016] [Accepted: 12/06/2016] [Indexed: 12/29/2022] Open
Abstract
Although significant advances have been made in recent years, the structural elucidation of small molecules continues to remain a challenging issue for metabolite profiling. Many metabolomic studies feature unknown compounds; sometimes even in the list of features identified as "statistically significant" in the study. Such metabolic "dark matter" means that much of the potential information collected by metabolomics studies is lost. Accurate structure elucidation allows researchers to identify these compounds. This in turn, facilitates downstream metabolite pathway analysis, and a better understanding of the underlying biology of the system under investigation. This review covers a range of methods for the structural elucidation of individual compounds, including those based on gas and liquid chromatography hyphenated to mass spectrometry, single and multi-dimensional nuclear magnetic resonance spectroscopy, and high-resolution mass spectrometry and includes discussion of data standardization. Future perspectives in structure elucidation are also discussed; with a focus on the potential development of instruments and techniques, in both nuclear magnetic resonance spectroscopy and mass spectrometry that, may help solve some of the current issues that are hampering the complete identification of metabolite structure and function.
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15
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Minervini F, Celano G, Lattanzi A, De Angelis M, Gobbetti M. Added ingredients affect the microbiota and biochemical characteristics of durum wheat type-I sourdough. Food Microbiol 2016; 60:112-23. [DOI: 10.1016/j.fm.2016.05.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 12/23/2015] [Accepted: 05/10/2016] [Indexed: 10/21/2022]
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Celano G, De Angelis M, Minervini F, Gobbetti M. Different Flour Microbial Communities Drive to Sourdoughs Characterized by Diverse Bacterial Strains and Free Amino Acid Profiles. Front Microbiol 2016; 7:1770. [PMID: 27877165 PMCID: PMC5099235 DOI: 10.3389/fmicb.2016.01770] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 10/21/2016] [Indexed: 11/21/2022] Open
Abstract
This work aimed to investigate whether different microbial assemblies in flour may influence the microbiological and biochemical characteristics of traditional sourdough. To reach this purpose, members of lactic acid bacteria, enterobacteria, and yeasts were isolated from durum wheat flour. Secondly, the isolated microorganisms (Pediococcus pentosaceus, Saccharomyces cerevisiae, Pantoea agglomerans, and Escherichia hermannii) were inoculated in doughs prepared with irradiated flour (gamma rays at 10 kGy), so that eight different microbial assemblies were obtained. Two non-inoculated controls were prepared, one of which (C-IF) using irradiated flour and the other (C) using non-irradiated flour. As shown by plate counts, irradiation of flour caused total inactivation of yeasts and a decrease of all the other microbial populations. However, acidification occurred also in the dough C-IF, due to metabolic activity of P. pentosaceus that had survived irradiation. After six fermentations, P. pentosaceus was the dominant lactic acid bacterium species in all the sourdoughs produced with irradiated flour (IF). Yet, IF-based sourdoughs broadly differed from each other in terms of strains of P. pentosaceus, probably due to the different microorganisms initially inoculated. Quantitative and qualitative differences of free amino acids concentration were found among the sourdoughs, possibly because of different microbial communities. In addition, as shown by culture-independent analysis (16S metagenetics), irradiation of flour lowered and modified microbial diversity of sourdough ecosystem.
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Affiliation(s)
- Giuseppe Celano
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro Bari, Italy
| | - Maria De Angelis
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro Bari, Italy
| | - Fabio Minervini
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro Bari, Italy
| | - Marco Gobbetti
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro Bari, Italy
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17
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Lactic acid bacterium and yeast microbiotas of sixteen French traditional sourdoughs. Int J Food Microbiol 2015; 215:161-70. [DOI: 10.1016/j.ijfoodmicro.2015.09.015] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 09/11/2015] [Accepted: 09/22/2015] [Indexed: 11/21/2022]
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18
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Corte L, Tiecco M, Roscini L, De Vincenzi S, Colabella C, Germani R, Tascini C, Cardinali G. FTIR metabolomic fingerprint reveals different modes of action exerted by structural variants of N-alkyltropinium bromide surfactants on Escherichia coli and Listeria innocua cells. PLoS One 2015; 10:e0115275. [PMID: 25588017 PMCID: PMC4294686 DOI: 10.1371/journal.pone.0115275] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 11/23/2014] [Indexed: 12/05/2022] Open
Abstract
Surfactants are extremely important agents to clean and sanitize various environments. Their biocidal activity is a key factor determined by the interactions between amphiphile structure and the target microbial cells. The object of this study was to analyze the interactions between four structural variants of N-alkyltropinium bromide surfactants with the Gram negative Escherichia coli and the Gram positive Listeria innocua bacteria. Microbiological and conductometric methods with a previously described FTIR bioassay were used to assess the metabolomic damage exerted by these compounds. All surfactants tested showed more biocidal activity in L. innocua than in E. coli. N-tetradecyltropinium bromide was the most effective compound against both species, while all the other variants had a reduced efficacy as biocides, mainly against E. coli cells. In general, the most prominent metabolomic response was observed for the constituents of the cell envelope in the fatty acids (W1) and amides (W2) regions and at the wavenumbers referred to peptidoglycan (W2 and W3 regions). This response was particularly strong and negative in L. innocua, when cells were challenged by N-tetradecyltropinium bromide, and by the variant with a smaller head and a 12C tail (N-dodecylquinuclidinium bromide). Tail length was critical for microbial inhibition especially when acting against E. coli, maybe due the complex nature of Gram negative cell envelope. Statistical analysis allowed us to correlate the induced mortality with the metabolomic cell response, highlighting two different modes of action. In general, gaining insights in the interactions between fine structural properties of surfactants and the microbial diversity can allow tailoring these compounds for the various operative conditions.
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Affiliation(s)
- Laura Corte
- Department of Pharmaceutical Sciences—Microbiology, University of Perugia, Borgo XX Giugno 74, I-06121 Perugia, Italy
- * E-mail:
| | - Matteo Tiecco
- CEMIN, Centre of Excellence on Nanostructured Innovative Materials, Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Luca Roscini
- Department of Pharmaceutical Sciences—Microbiology, University of Perugia, Borgo XX Giugno 74, I-06121 Perugia, Italy
| | - Sergio De Vincenzi
- Department of Pharmaceutical Sciences—Microbiology, University of Perugia, Borgo XX Giugno 74, I-06121 Perugia, Italy
| | - Claudia Colabella
- Department of Pharmaceutical Sciences—Microbiology, University of Perugia, Borgo XX Giugno 74, I-06121 Perugia, Italy
| | - Raimondo Germani
- CEMIN, Centre of Excellence on Nanostructured Innovative Materials, Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Carlo Tascini
- U.O. Malattie Infettive, Azienda Ospedaliera Universitaria Pisana, Via Paradisa 2, Cisanello, 56100 Pisa, Italy
| | - Gianluigi Cardinali
- Department of Pharmaceutical Sciences—Microbiology, University of Perugia, Borgo XX Giugno 74, I-06121 Perugia, Italy
- CEMIN, Centre of Excellence on Nanostructured Innovative Materials, Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di Sotto 8, I-06123 Perugia, Italy
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Cardellini F, Tiecco M, Germani R, Cardinali G, Corte L, Roscini L, Spreti N. Novel zwitterionic deep eutectic solvents from trimethylglycine and carboxylic acids: characterization of their properties and their toxicity. RSC Adv 2014. [DOI: 10.1039/c4ra10628h] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Candida milleri species reveals intraspecific genetic and metabolic polymorphisms. Food Microbiol 2014; 42:72-81. [DOI: 10.1016/j.fm.2014.02.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 01/17/2014] [Accepted: 02/15/2014] [Indexed: 11/20/2022]
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21
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Corte L, Tiecco M, Roscini L, Germani R, Cardinali G. FTIR analysis of the metabolomic stress response induced by N-alkyltropinium bromide surfactants in the yeasts Saccharomyces cerevisiae and Candida albicans. Colloids Surf B Biointerfaces 2014; 116:761-71. [DOI: 10.1016/j.colsurfb.2014.01.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 01/27/2014] [Accepted: 01/30/2014] [Indexed: 10/25/2022]
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Biocidal and inhibitory activity screening of de novo synthesized surfactants against two eukaryotic and two prokaryotic microbial species. Colloids Surf B Biointerfaces 2013; 111:407-17. [DOI: 10.1016/j.colsurfb.2013.06.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/24/2013] [Accepted: 06/17/2013] [Indexed: 11/19/2022]
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Ndoye B, Rasolofo EA, LaPointe G, Roy D. A review of the molecular approaches to investigate the diversity and activity of cheese microbiota. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s13594-011-0031-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Corte L, Antonielli L, Roscini L, Fatichenti F, Cardinali G. Influence of cell parameters in Fourier transform infrared spectroscopy analysis of whole yeast cells. Analyst 2011; 136:2339-49. [PMID: 21494743 DOI: 10.1039/c0an00515k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fourier Transform InfraRed spectroscopy (FTIR) is an emerging technique in biology. One of the analytical problems inherent with this approach is the extreme variability typical of biological systems. Extrinsic fonts of variations are the growth media and the growth phase of the microbial culture. In order to gain knowledge on the relations between these two factors and the spectral variability, metabolomic changes in Saccharomyces cerevisiae cells during growth were analyzed with FTIR spectroscopy. Spectral variations reflected the changes occurring in all cellular compartments and components during the different growth stages and describe the metabolomic evolution of cell cultures during growth. Three different media were tested. Different mathematical and statistical treatments were used to describe and evaluate the changes occurring during growth. Variations were mainly concentrated in the exponential phase, whereas fewer changes occurred in stationary phase cells. The three different media caused different metabolomic behaviours during growth. The mathematical distance between the peak areas of amide I, amide II and of two distinct peaks in the carbohydrates region could give a synthetic description of growth and produced similar trends in all the conditions tested. The distance between the two carbohydrate peaks could be used to determine the mid exponential phase and the entrance in the stationary phase. Growth phase was shown to influence the sensitivity of a FTIR-based cell stress bioassay. The knowledge of the metabolomic variations during growth could be used in the future to optimize FTIR applications in microbiology.
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Affiliation(s)
- Laura Corte
- Department Applied Biology-Microbiology, University of Perugia, Borgo 20 Giugno, 74, I-06121 Perugia, Italy
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Plumed-Ferrer C, von Wright A. Antimicrobial activity of weak acids in liquid feed fermentations, and its effects on yeasts and lactic acid bacteria. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2011; 91:1032-1040. [PMID: 21328352 DOI: 10.1002/jsfa.4278] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 11/29/2010] [Accepted: 11/29/2010] [Indexed: 05/30/2023]
Abstract
BACKGROUND The efficacy of weak organic acids in the control of yeasts in pig liquid feed was studied taking into account the effects on lactic acid bacteria (LAB) responsible for beneficial fermentation. RESULTS The yeast population in pig liquid feed was taxonomically identified. Kazachstania exigua, Debaryomyces hansenii and Pichia deserticola dominated the fermentation in liquid feed and whey. Pichia deserticola was found in whey and foaming liquid feed and dominated the fermentation after incubation. The sensitivity of the isolates against weak acids was measured in culture medium as well as in fermented and non-fermented liquid feed. Formic acid and potassium sorbate successfully reduced the growth of yeasts in all media without interfering with LAB development. Both of these organic acids showed an increased antifungal effect when used in liquid feed fermented by a Lactobacillus plantarum strain. CONCLUSION The loss of energy, reduced palatability and other practical problems due to the high growth of yeasts in fermented liquid diets can be reduced by organic acids without affecting lactic acid fermentation.
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Affiliation(s)
- Carme Plumed-Ferrer
- Nutrition and Food Biotechnology, Applied Biotechnology, Department of Biosciences, University of Eastern Finland, PO Box 1627, FI-70211 Kuopio, Finland.
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Roscini L, Corte L, Antonielli L, Rellini P, Fatichenti F, Cardinali G. Influence of cell geometry and number of replicas in the reproducibility of whole cell FTIR analysis. Analyst 2010; 135:2099-105. [PMID: 20523945 DOI: 10.1039/c0an00127a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fourier Transform InfraRed (FTIR) spectroscopy is an increasingly used technique in biology, especially for whole cell metabolomic fingerprint. The reproducibility of this technique is influenced by a large number of factors such as the physiological state of cells, sample manipulation and growth conditions. Evidence exists suggesting that the cell shape and dimension can be further elements to consider in whole cell FTIR analysis. In this study we aimed to address the effect of cell geometry on the FTIR spectra and to define the extent of variability occurring between machine and biological replicas with a standardized protocol. The yeast species Saccharomyces cerevisiae (large oval-shaped cells) and Debaryomyces hansenii (small round shaped cells) were employed for their different morphology. Thirty machine replicas of each were analyzed separately and after averaging in groups of three, showing a three to four-fold reduction of the variability. Similarly, a two-fold reduction of variability was observed when thirty biological replicas of the two yeast species were analyzed. The optimal number of replicas to average was then estimated with a bootstrap-like procedure in which biological and machine replicas were randomly resampled 2000 times and averaged in groups spanning from 2 to 12 replicas. This simulation has shown that little if any advantage can be obtained by increasing the number of replicas over five and that the variability exhibited by the small regular cells of D. hansenii was always roughly half of that displayed by the large S. cerevisiae cells, confirming the results obtained with standard non-bootstrapped averages.
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Affiliation(s)
- Luca Roscini
- Department Applied Biology-Microbiology, University of Perugia, Borgo 20 Giugno, 74, I-06121 Perugia, Italy
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Current awareness on yeast. Yeast 2009. [DOI: 10.1002/yea.1626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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