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Moreira L, Milheiro J, Filipe-Ribeiro L, Cosme F, Nunes FM. Exploring factors influencing the levels of biogenic amines in wine and microbiological strategies for controlling their occurrence in winemaking. Food Res Int 2024; 190:114558. [PMID: 38945562 DOI: 10.1016/j.foodres.2024.114558] [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] [Received: 03/21/2024] [Revised: 05/22/2024] [Accepted: 05/26/2024] [Indexed: 07/02/2024]
Abstract
Fermented beverages, including wine, can accumulate high concentrations of biogenic amines (BAs), which can pose potential health risks. BAs are produced by various yeasts and lactic acid bacteria (LAB) during winemaking. LAB are the main contributors to the formation of histamine and tyramine, the most toxic and food safety relevant biogenic amines. Numerous factors, ranging from agricultural and oenological practices to sanitation conditions, can contribute to the formation of BAs in wines. Moreover, organic and biodynamic wines impose limitations on the use of common food additives employed to control the proliferation of native and spoilage microorganisms during vinification and storage. To mitigate histamine production, commercial starter cultures incapable of synthesising histamine have been effectively utilised to reduce wine histamine content. Alternative fermentative microorganisms are currently under investigation to enhance the safety, quality, and typicity of wines, including indigenous LAB, non-Saccharomyces yeasts, and BAs degrading strains. Furthermore, exploration of extracts from BAs-degrading microorganisms and their purified enzymes has been undertaken to reduce BAs levels in wines. This review highlights microbial contributors to BAs in wines, factors affecting their growth and BA production, and alternative microorganisms that can degrade or avoid BAs. The aim is to lessen reliance on additives, providing consumers with safer wine choices.
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Affiliation(s)
- Luís Moreira
- Chemistry Research Centre - Vila Real (CQ-VR), Food and Wine Chemistry Lab, University of Trás-os-Montes and Alto Douro, School of Life Sciences and Environment, 5000-801 Vila Real, Portugal
| | - Juliana Milheiro
- Chemistry Research Centre - Vila Real (CQ-VR), Food and Wine Chemistry Lab, University of Trás-os-Montes and Alto Douro, School of Life Sciences and Environment, 5000-801 Vila Real, Portugal
| | - Luís Filipe-Ribeiro
- Chemistry Research Centre - Vila Real (CQ-VR), Food and Wine Chemistry Lab, University of Trás-os-Montes and Alto Douro, School of Life Sciences and Environment, 5000-801 Vila Real, Portugal
| | - Fernanda Cosme
- Chemistry Research Centre - Vila Real (CQ-VR), Food and Wine Chemistry Lab, Biology and Environment Department, University of Trás-os-Montes and Alto Douro, School of Life Sciences and Environment, 5000-801 Vila Real, Portugal
| | - Fernando M Nunes
- Chemistry Research Centre - Vila Real (CQ-VR), Food and Wine Chemistry Lab, Chemistry Department, University of Trás-os-Montes and Alto Douro, School of Life Sciences and Environment, 5000-801 Vila Real, Portugal.
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Bongaerts D, Bouchez A, De Roos J, Cnockaert M, Wieme AD, Vandamme P, Weckx S, De Vuyst L. Refermentation and maturation of lambic beer in bottles: a necessary step for gueuze production. Appl Environ Microbiol 2024; 90:e0186923. [PMID: 38446583 PMCID: PMC11022581 DOI: 10.1128/aem.01869-23] [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: 10/18/2023] [Accepted: 02/04/2024] [Indexed: 03/08/2024] Open
Abstract
The production of gueuze beers through refermentation and maturation of blends of lambic beer in bottles is a way for lambic brewers to cope with the variability among different lambic beer batches. The resulting gueuze beers are more carbonated than lambic beers and are supposed to possess a unique flavor profile that varies over time. To map this refermentation and maturation process for gueuze production, a blend of lambic beers was made and bottled, whereby one of them was produced with the old wheat landrace Zeeuwse Witte. Through the use of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and high-throughput sequencing of bacterial and fungal amplicons, in combination with metabolite target analysis, new insights into gueuze production were obtained. During the initial stages of refermentation, the conditions in the bottles were similar to those encountered during the maturation phase of lambic beer productions in wooden barrels, which was also reflected microbiologically (presence of Brettanomyces species, Pediococcus damnosus, and Acetobacter lambici) and biochemically (ethanol, higher alcohols, lactic acid, acetic acid, volatile phenolic compounds, and ethyl esters). However, after a few weeks of maturation, a switch from a favorable environment to one with nutrient and dissolved oxygen depletion resulted in several changes. Concerning the microbiology, a sequential prevalence of three lactic acid bacterial species occurred, namely, P. damnosus, Lentilactobacillus buchneri, and Lactobacillus acetotolerans, while the diversity of the yeasts decreased. Concerning the metabolites produced, mainly those of the Brettanomyces yeasts determined the metabolic profiles encountered during later stages of the gueuze production.IMPORTANCEGueuze beers are the result of a refermentation and maturation process of a blend of lambic beers carried out in bottles. These gueuze beers are known to have a long shelf life, and their quality typically varies over time. However, knowledge about gueuze production in bottles is scarce. The present study provided more insights into the varying microbial and metabolite composition of gueuze beers during the first 2 years of this refermentation and maturation process. This will allow gueuze producers to gain more information about the influence of the refermentation and maturation time on their beers. These insights can also be used by gueuze producers to better inform their customers about the quality of young and old gueuze beers.
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Affiliation(s)
- Dries Bongaerts
- Department of Bioengineering Sciences, Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Arne Bouchez
- Department of Bioengineering Sciences, Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Jonas De Roos
- Department of Bioengineering Sciences, Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Margo Cnockaert
- Department of Biochemistry and Microbiology, Laboratory for Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Anneleen D. Wieme
- Department of Biochemistry and Microbiology, Laboratory for Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
- Department of Biochemistry and Microbiology, BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Peter Vandamme
- Department of Biochemistry and Microbiology, Laboratory for Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
- Department of Biochemistry and Microbiology, BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Stefan Weckx
- Department of Bioengineering Sciences, Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Luc De Vuyst
- Department of Bioengineering Sciences, Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
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Arellano K, Lim J, Bucheli JEV, Park H, Todorov SD, Holzapfel WH. Identification of safe putative probiotics from various food products. Folia Microbiol (Praha) 2024:10.1007/s12223-024-01142-7. [PMID: 38376735 DOI: 10.1007/s12223-024-01142-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 01/25/2024] [Indexed: 02/21/2024]
Abstract
The objective of this study was to isolate, identify, and assess the safety and functionality in vitro of putative probiotic bacterial strains. Isolation procedures were based on standard methods using elective and selective media. The isolates were identified by comparative 16S rRNA sequencing analysis while their safety was determined according to the safety tests recommended by the FAO/WHO such as antibiotic resistance, hemolysin, and biogenic amine production. Most of the isolates did not pass the in vitro safety tests; therefore, only Lactiplantibacillus plantarum (from ant intestine and cheese), Lacticaseibacillus paracasei (from goat milk and kimchi), Enterococcus faecium (from chili doenjang and vegetables with kimchi ingredients), Limosilactobacillus fermentum (from saliva), and Companilactobacillus alimentarius (from kimchi) were identified and selected for further studies. The isolates were further differentiated by rep-PCR and identified to the strain level by genotypic (16S rRNA) and phenotypic (Gen III) approaches. Subsequently, the strain tolerance to acid and bile was evaluated resulting in good viability after simulated gastrointestinal tract passage. Adhesion to mucin in vitro and the presence of mub, mapA, and ef-tu genes confirmed the adhesive potential of the strains and the results of features associated with adhesion such as hydrophobicity and zeta potential extended the insights. This study reflects the importance of fermented and non-fermented food products as a promising source of lactic acid bacteria with potential probiotic properties. Additionally, it aims to highlight the challenges associated with the selection of safe strains, which often fail in the in vitro tests, thus hindering the possibilities of "uncovering" novel and safe probiotic strains.
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Affiliation(s)
- Karina Arellano
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
- Laboratory of Infection Oncology, Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel, University Hospital Schleswig Holstein, Schwanenweg 20, 24105 Kiel, Germany
| | - Juwhan Lim
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
| | - Jorge Enrique Vazquez Bucheli
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
- ProBacLab, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
| | - Haryung Park
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
| | - Svetoslav Dimitrov Todorov
- ProBacLab, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea.
- ProBacLab, Laboratório de Microbiologia de Alimentos, Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
- Food Research Center (FoRC), Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
- CISAS - Center for Research and Development in Agrifood Systems and Sustainability, Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal.
| | - Wilhelm Heinrich Holzapfel
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea.
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Huang F, Zhao Y, Hou Y, Yang Y, Yue B, Zhang X. Unraveling the antimicrobial potential of Lactiplantibacillus plantarum strains TE0907 and TE1809 sourced from Bufo gargarizans: advancing the frontier of probiotic-based therapeutics. Front Microbiol 2024; 15:1347830. [PMID: 38419633 PMCID: PMC10899456 DOI: 10.3389/fmicb.2024.1347830] [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: 12/01/2023] [Accepted: 01/29/2024] [Indexed: 03/02/2024] Open
Abstract
Introduction In an era increasingly defined by the challenge of antibiotic resistance, this study offers groundbreaking insights into the antibacterial properties of two distinct Lactiplantibacillus plantarum strains, TE0907 and TE1809, hailing from the unique ecosystem of Bufo gargarizans. It uniquely focuses on elucidating the intricate components and mechanisms that empower these strains with their notable antibacterial capabilities. Methods The research employs a multi-omics approach, including agar diffusion tests to assess antibacterial efficacy and adhesion assays with HT-29 cells to understand the preliminary mechanisms. Additionally, gas chromatography-mass spectrometry (GC-MS) is employed to analyze the production of organic acids, notably acetic acid, and whole-genome sequencing is utilized to identify genes linked to the biosynthesis of antibiotics and bacteriocin-coding domains. Results The comparative analysis highlighted the exceptional antibacterial efficacy of strains TE0907 and TE1809, with mean inhibitory zones measured at 14.97 and 15.98 mm, respectively. A pivotal discovery was the significant synthesis of acetic acid in both strains, demonstrated by a robust correlation coefficient (cor ≥ 0.943), linking its abundance to their antimicrobial efficiency. Genomic exploration uncovered a diverse range of elements involved in the biosynthesis of antibiotics similar to tetracycline and vancomycin and potential regions encoding bacteriocins, including Enterolysin and Plantaricin. Conclusion This research illuminates the remarkable antibacterial efficacy and mechanisms intrinsic to L. plantarum strains TE0907 and TE1809, sourced from B. gargarizans. The findings underscore the strains' extensive biochemical and enzymatic armamentarium, offering valuable insights into their role in antagonizing enteric pathogens. These results lay down a comprehensive analytical foundation for the potential clinical deployment of these strains in safeguarding animal gut health, thereby enriching our understanding of the role of probiotic bacteria in the realm of antimicrobial interventions.
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Affiliation(s)
- Feiyun Huang
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Yanni Zhao
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Yusen Hou
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yu Yang
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Bisong Yue
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Xiuyue Zhang
- Sichuan Key Laboratory of Conservation Biology on Endangered Wildlife, College of Life Sciences, Sichuan University, Chengdu, China
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Quintana G, Di Clemente N, Gómez-Zavaglia A, Gerbino E. Quantification of the environmental impact arising from the utilization of whole and defatted Okara in fermentative and dehydration processes. Food Res Int 2023; 174:113645. [PMID: 37986485 DOI: 10.1016/j.foodres.2023.113645] [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] [Received: 08/14/2023] [Revised: 10/21/2023] [Accepted: 10/24/2023] [Indexed: 11/22/2023]
Abstract
Okara is the insoluble pulp that remains after the grinding and filtration of soybeans during the production of soymilk and tofu. As it retains a noteworthy quantity of nutrients, there has been an increasing emphasis in the utilization of this residue for the development of sustainable processes. This study focused on assessing the environmental impact of employing okara as a medium for fermenting and dehydrating probiotic bacteria at laboratory scale. The evaluation was carried out using the Life Cycle Assessment (LCA) methodology, considering the entire process lifecycle. Whole okara and defatted okara were used as culture media for Lactiplantibacillus plantarum CIDCA 83114, followed by dehydration (either freeze-drying or spray-drying) and subsequent storage. For the purpose of comparison, both scenarios (whole and defatted okara) were evaluated using 1 kg of dehydrated final product for storage, as functional unit. Based on experimental results, the conservation of the received okara and the dehydration-storage (e.g., freezing and freeze-drying) phases were identified as the most significant environmental hotspots responsible for the most substantial impacts of the processes. The use of LCA facilitated the measurement of the environmental effects linked to the reutilization of okara as an agro-industrial residue, thus providing quantitative support when engineering its sustainable valorization.
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Affiliation(s)
- Gabriel Quintana
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina
| | - Natalia Di Clemente
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina
| | - Andrea Gómez-Zavaglia
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina.
| | - Esteban Gerbino
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina.
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Pei H, Wang Y, He W, Deng L, Lan Q, Zhang Y, Yang L, Hu K, Li J, Liu A, Ao X, Teng H, Liu S, Zou L, Li R, Yang Y. Research of Multicopper Oxidase and Its Degradation of Histamine in Lactiplantibacillus plantarum LPZN19. Microorganisms 2023; 11:2724. [PMID: 38004736 PMCID: PMC10672810 DOI: 10.3390/microorganisms11112724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/17/2023] [Accepted: 10/23/2023] [Indexed: 11/26/2023] Open
Abstract
In order to explore the structural changes and products of histamine degradation by multicopper oxidase (MCO) in Lactiplantibacillus plantarum LPZN19, a 1500 bp MCO gene in L. plantarum LPZN19 was cloned, and the recombinant MCO was expressed in E. coli BL21 (DE3). After purification by Ni2+-NTA affinity chromatography, the obtained MCO has a molecular weight of 58 kDa, and it also has the highest enzyme activity at 50 °C and pH 3.5, with a relative enzyme activity of 100%, and it maintains 57.71% of the relative enzyme activity at 5% salt concentration. The secondary structure of MCO was determined by circular dichroism, in which the proportions of the α-helix, β-sheet, β-turn and random coil were 2.9%, 39.7%, 21.2% and 36.1%, respectively. The 6xj0.1.A with a credibility of 68.21% was selected as the template to predict the tertiary structure of MCO in L. plantarum LPZN19, and the results indicated that the main components of the tertiary structure of MCO were formed by the further coiling and folding of a random coil and β-sheet. Histamine could change the spatial structure of MCO by increasing the content of the α-helix and β-sheet. Finally, the LC-MS/MS identification results suggest that the histamine was degraded into imidazole acetaldehyde, hydrogen peroxide and ammonia.
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Affiliation(s)
- Huijie Pei
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Yilun Wang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Wei He
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Lin Deng
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Qinjie Lan
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Yue Zhang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Lamei Yang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Kaidi Hu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Jianlong Li
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Aiping Liu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Xiaolin Ao
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Hui Teng
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Likou Zou
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China;
| | - Ran Li
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Yong Yang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
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Cheriet S, Lengliz S, Romdhani A, Hynds P, Abbassi MS, Ghrairi T. Selection and Characterization of Bacteriocinogenic Lactic Acid Bacteria from the Intestine of Gilthead Seabream ( Sparus aurata) and Whiting Fish ( Merlangius merlangus): Promising Strains for Aquaculture Probiotic and Food Bio-Preservation. Life (Basel) 2023; 13:1833. [PMID: 37763237 PMCID: PMC10532712 DOI: 10.3390/life13091833] [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: 07/06/2023] [Revised: 08/16/2023] [Accepted: 08/19/2023] [Indexed: 09/29/2023] Open
Abstract
This study sought to evaluate the probiotic properties and the food preservation ability of lactic acid bacteria isolates collected from the intestines of wild marine fishes (gilthead seabream (Sparus aurata) (n = 60) and whiting fish (Merlangius merlangus) (n = 40)) from the Mediterranean sea in the area of Mostaganem city, Algeria. Forty-two isolates were identified as: Enterococcus durans (n = 19), Enterococcus faecium (n = 15), Enterococcus faecalis (n = 4), Lactococcus lactis subp. lactis (n = 3), and Lactobacillus plantarum (n = 1). All isolates showed inhibition to at least one indicator strain, especially against Listeria monocytogenes, Staphylococcus aureus, Paenibacillus larvae, Vibrio alginolyticus, Enterococcus faecalis, Bacillus cereus, and Bacillus subtilis. In all collected isolates, PCR analysis of enterocin-encoding genes showed the following genes: entP (n = 21), ent1071A/B (n = 11), entB (n = 8), entL50A/B (n = 7), entAS48 (n = 5), and entX (n = 1). Interestingly, 15 isolates harbored more than one ent gene. Antimicrobial susceptibility, phenotypic virulence, and genes encoding virulence factors were investigated by PCR. Resistance to tetracycline (n = 8: tetL + tetK), erythromycin (n = 7: 5 ermA, 2 msrA, and 1 mef(A/E)), ciprofloxacin (n = 1), gentamicin (n = 1: aac(6')-aph(2″)), and linezolid (n = 1) were observed. Three isolates were gelatinase producers and eight were α-hemolytic. Three E. durans and one E. faecium harbored the hyl gene. Eight isolates showing safety properties (susceptible to clinically relevant antibiotics, free of genes encoding virulence factors) were tested to select probiotic candidates. They showed high tolerance to low pH and bile salt, hydrophobicity power, and co-culture ability. The eight isolates showed important phenotypic and genotypic traits enabling them to be promising probiotic candidates or food bio-conservers and starter cultures.
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Affiliation(s)
- Sarah Cheriet
- Institute of Veterinary Research of Tunisia, University of Tunis El Manar, Tunis 1006, Tunisia; (S.C.); (S.L.); (A.R.)
- Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation LR18ES03, Faculty of Sciences of Tunis, University Tunis El Manar, Tunis 2092, Tunisia;
| | - Sana Lengliz
- Institute of Veterinary Research of Tunisia, University of Tunis El Manar, Tunis 1006, Tunisia; (S.C.); (S.L.); (A.R.)
- Laboratory of Materials, Molecules and Application LR11ES22, Preparatory Institute for Scientific and Technical Studies, University of Carthage, Tunis 1054, Tunisia
| | - Amel Romdhani
- Institute of Veterinary Research of Tunisia, University of Tunis El Manar, Tunis 1006, Tunisia; (S.C.); (S.L.); (A.R.)
| | - Paul Hynds
- Environmental Sustainability and Health Institute (ESHI), Technological University Dublin, Grangegorman, Dublin 7, D07 H6K8 Dublin, Ireland;
| | - Mohamed Salah Abbassi
- Institute of Veterinary Research of Tunisia, University of Tunis El Manar, Tunis 1006, Tunisia; (S.C.); (S.L.); (A.R.)
- Research Laboratory «Antimicrobial Resistance» LR99ES09, Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis 1006, Tunisia
| | - Taoufik Ghrairi
- Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation LR18ES03, Faculty of Sciences of Tunis, University Tunis El Manar, Tunis 2092, Tunisia;
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Elhalis H, See XY, Osen R, Chin XH, Chow Y. Significance of Fermentation in Plant-Based Meat Analogs: A Critical Review of Nutrition, and Safety-Related Aspects. Foods 2023; 12:3222. [PMID: 37685155 PMCID: PMC10486689 DOI: 10.3390/foods12173222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Plant-based meat analogs have been shown to cause less harm for both human health and the environment compared to real meat, especially processed meat. However, the intense pressure to enhance the sensory qualities of plant-based meat alternatives has caused their nutritional and safety aspects to be overlooked. This paper reviews our current understanding of the nutrition and safety behind plant-based meat alternatives, proposing fermentation as a potential way of overcoming limitations in these aspects. Plant protein blends, fortification, and preservatives have been the main methods for enhancing the nutritional content and stability of plant-based meat alternatives, but concerns that include safety, nutrient deficiencies, low digestibility, high allergenicity, and high costs have been raised in their use. Fermentation with microorganisms such as Bacillus subtilis, Lactiplantibacillus plantarum, Neurospora intermedia, and Rhizopus oryzae improves digestibility and reduces allergenicity and antinutritive factors more effectively. At the same time, microbial metabolites can boost the final product's safety, nutrition, and sensory quality, although some concerns regarding their toxicity remain. Designing a single starter culture or microbial consortium for plant-based meat alternatives can be a novel solution for advancing the health benefits of the final product while still fulfilling the demands of an expanding and sustainable economy.
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Affiliation(s)
| | | | | | | | - Yvonne Chow
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos, Singapore 138669, Singapore; (H.E.); (X.Y.S.); (R.O.); (X.H.C.)
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9
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Silva BN, Teixeira JA, Cadavez V, Gonzales-Barron U. Mild Heat Treatment and Biopreservatives for Artisanal Raw Milk Cheeses: Reducing Microbial Spoilage and Extending Shelf-Life through Thermisation, Plant Extracts and Lactic Acid Bacteria. Foods 2023; 12:3206. [PMID: 37685139 PMCID: PMC10486694 DOI: 10.3390/foods12173206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
The microbial quality of raw milk artisanal cheeses is not always guaranteed due to the possible presence of pathogens in raw milk that can survive during manufacture and maturation. In this work, an overview of the existing information concerning lactic acid bacteria and plant extracts as antimicrobial agents is provided, as well as thermisation as a strategy to avoid pasteurisation and its negative impact on the sensory characteristics of artisanal cheeses. The mechanisms of antimicrobial action, advantages, limitations and, when applicable, relevant commercial applications are discussed. Plant extracts and lactic acid bacteria appear to be effective approaches to reduce microbial contamination in artisanal raw milk cheeses as a result of their constituents (for example, phenolic compounds in plant extracts), production of antimicrobial substances (such as organic acids and bacteriocins, in the case of lactic acid bacteria), or other mechanisms and their combinations. Thermisation was also confirmed as an effective heat inactivation strategy, causing the impairment of cellular structures and functions. This review also provides insight into the potential constraints of each of the approaches, hence pointing towards the direction of future research.
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Affiliation(s)
- Beatriz Nunes Silva
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (V.C.); (U.G.-B.)
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal;
| | - José António Teixeira
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal;
- LABBELS—Associate Laboratory, 4710-057 Braga, Portugal
| | - Vasco Cadavez
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (V.C.); (U.G.-B.)
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Ursula Gonzales-Barron
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (V.C.); (U.G.-B.)
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
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10
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Rwubuzizi R, Carneiro KO, Holzapfel WH, Vaz-Velho M, Todorov SD. Bacteriocin and Antioxidant Production, a Beneficial Properties of Lactic Acid Bacteria Isolated from Fermented Vegetables of Northwest Bulgaria. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10140-z. [PMID: 37589786 DOI: 10.1007/s12602-023-10140-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2023] [Indexed: 08/18/2023]
Abstract
Lactiplantibacillus plantarum ST01BG, ST07BG, ST10BG, and ST15BG; Latilactobacillus curvatus ST02BG; Lacticaseibacillus paracasei ST04BG; Pediococcus pentosaceus ST05BG; Leuconostoc mesenteroides ST06BG; and Enterococcus faecium ST11BG were isolated from home-made fermented vegetables from Northwest Bulgaria and identified by biochemical, physiological, and biomolecular analyses, including partial 16S rRNA sequencing. The strains were designated as bacteriocin producers and the expressed antimicrobials partially characterized with a focus on their proteinaceous nature, stability to different pH and temperatures. The bacteriocins were effective in inhibiting different strains of Listeria spp., Enterococcus spp. (including vancomycin resistant enterococci) and Staphylococcus spp. These strains can be considered safe, based on the evaluation of hemolytic activity, production of biogenic amines, mucin degradation, antibiotic susceptibility/resistance, and gelatinase enzyme production. Moreover, the strains can be considered potentially beneficial based on their stability and survival under simulated gastrointestinal tract conditions (stomach and duodenum), the production of diacetyl, and specific levels of hydrophobicity. Special attention was given to antioxidant properties (DPPH radical, hydroxyl radical, superoxide anion radical scavenging activity, Fe+2 ion chelating activity, and anti-lipid peroxidation) of the strains. Antioxidant properties were found to be strain specific. The beneficial attributes (antimicrobial and antioxidant) of these cultures to fermented food products may enable the reduction of chemical additives in line with consumers' demand for more natural and chemical-free food commodities.
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Affiliation(s)
- Ronaldo Rwubuzizi
- ProBacLab, Department of Advanced Convergence, Handong Global University, Gyeongbuk , 37554, Pohang, Republic of Korea
| | - Kayque Ordonho Carneiro
- ProBacLab, Laboratório de Microbiologia de Alimentos, Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Wilhelm Heinrich Holzapfel
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang, Gyeongbuk, South Korea
| | - Manuela Vaz-Velho
- CISAS-Center for Research and Development in Agrifood Systems and Sustainability, Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
| | - Svetoslav Dimitrov Todorov
- ProBacLab, Department of Advanced Convergence, Handong Global University, Gyeongbuk , 37554, Pohang, Republic of Korea.
- ProBacLab, Laboratório de Microbiologia de Alimentos, Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
- CISAS-Center for Research and Development in Agrifood Systems and Sustainability, Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal.
- Food Research Center (FoRC), Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
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11
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Improving flavor, bioactivity, and changing metabolic profiles of goji juice by selected lactic acid bacteria fermentation. Food Chem 2023; 408:135155. [PMID: 36528989 DOI: 10.1016/j.foodchem.2022.135155] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
Lactic acid bacteria (LAB) have exhibited strain/species specificity for different food matrices. We investigated the impact of LAB fermentation on the flavor, chemical profile, and bioactivity of goji juice. The colony counts of five selected strains reached above 8.5 log CFU/mL. The fermentation increased the organic acids, decreased the sugars, and improved the sensory quality of goji juice. The majority of the strains had increased acetic acid, heptanoic acid, ethyl phenylacetate, and linalool levels. Specific strains suppressed α-glucosidase and pancreatic lipase activities and increased the antioxidant activities of fermented goji juice. Based on non-targeted metabolomics and activities, 23 important differential metabolites were screened among 453 metabolites. The quantification results showed that isoquercitrin and m-coumaric content varied among strains, reflecting the strain specificity in flavone and flavonol biosynthesis and phenylalanine, tyrosine, and tryptophan biosynthesis. These findings will provide useful information for fermented goji juice biochemistry research.
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12
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Rodríguez-Lucas C, Ladero V. Enterococcal Phages: Food and Health Applications. Antibiotics (Basel) 2023; 12:antibiotics12050842. [PMID: 37237745 DOI: 10.3390/antibiotics12050842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/24/2023] [Accepted: 04/30/2023] [Indexed: 05/28/2023] Open
Abstract
Enterococcus is a diverse genus of Gram-positive bacteria belonging to the lactic acid bacteria (LAB) group. It is found in many environments, including the human gut and fermented foods. This microbial genus is at a crossroad between its beneficial effects and the concerns regarding its safety. It plays an important role in the production of fermented foods, and some strains have even been proposed as probiotics. However, they have been identified as responsible for the accumulation of toxic compounds-biogenic amines-in foods, and over the last 20 years, they have emerged as important hospital-acquired pathogens through the acquisition of antimicrobial resistance (AMR). In food, there is a need for targeted measures to prevent their growth without disturbing other LAB members that participate in the fermentation process. Furthermore, the increase in AMR has resulted in the need for the development of new therapeutic options to treat AMR enterococcal infections. Bacteriophages have re-emerged in recent years as a precision tool for the control of bacterial populations, including the treatment of AMR microorganism infections, being a promising weapon as new antimicrobials. In this review, we focus on the problems caused by Enterococcus faecium and Enterococcus faecalis in food and health and on the recent advances in the discovery and applications of enterococcus-infecting bacteriophages against these bacteria, with special attention paid to applications against AMR enterococci.
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Affiliation(s)
- Carlos Rodríguez-Lucas
- Microbiology Laboratory, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain
- Translational Microbiology Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Victor Ladero
- Department of Technology and Biotechnology of Dairy Products, Dairy Research Institute, IPLA CSIC, 33300 Villaviciosa, Spain
- Molecular Microbiology Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
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13
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Avîrvarei AC, Salanță LC, Pop CR, Mudura E, Pasqualone A, Anjos O, Barboza N, Usaga J, Dărab CP, Burja-Udrea C, Zhao H, Fărcaș AC, Coldea TE. Fruit-Based Fermented Beverages: Contamination Sources and Emerging Technologies Applied to Assure Their Safety. Foods 2023; 12:foods12040838. [PMID: 36832913 PMCID: PMC9957501 DOI: 10.3390/foods12040838] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/26/2023] [Accepted: 02/07/2023] [Indexed: 02/18/2023] Open
Abstract
The food and beverage market has become broader due to globalization and consumer claims. Under the umbrella of consumer demands, legislation, nutritional status, and sustainability, the importance of food and beverage safety must be decisive. A significant sector of food production is related to ensuring fruit and vegetable conservation and utilization through fermentation. In this respect, in this review, we critically analyzed the scientific literature regarding the presence of chemical, microbiological and physical hazards in fruit-based fermented beverages. Furthermore, the potential formation of toxic compounds during processing is also discussed. In managing the risks, biological, physical, and chemical techniques can reduce or eliminate any contaminant from fruit-based fermented beverages. Some of these techniques belong to the technological flow of obtaining the beverages (i.e., mycotoxins bound by microorganisms used in fermentation) or are explicitly applied for a specific risk reduction (i.e., mycotoxin oxidation by ozone). Providing manufacturers with information on potential hazards that could jeopardize the safety of fermented fruit-based drinks and strategies to lower or eliminate these hazards is of paramount importance.
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Affiliation(s)
- Alexandra Costina Avîrvarei
- Department of Food Engineering, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
| | - Liana Claudia Salanță
- Department of Food Science, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Carmen Rodica Pop
- Department of Food Science, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Elena Mudura
- Department of Food Engineering, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Antonella Pasqualone
- Department of Soil, Plant and Food Science (DISSPA), University of Bari Aldo Moro, I-70126 Bari, Italy
| | - Ofelia Anjos
- Instituto Politécnico de Castelo Branco, 6001-909 Castelo Branco, Portugal
- Forest Research Centre, School of Agriculture, University of Lisbon, 1349-017 Lisbon, Portugal
- Spectroscopy and Chromatography Laboratory, CBP-BI-Centro de Biotecnologia de Plantas da Beira Interior, 6001-909 Castelo Branco, Portugal
| | - Natalia Barboza
- Food Technology Department, University of Costa Rica, Ciudad Universitaria Rodrigo Facio, San Jośe 11501-2060, Costa Rica
- National Center of Food Science and Technology (CITA), University of Costa Rica, Ciudad Universitaria Rodrigo Facio, San Jośe 11501-2060, Costa Rica
| | - Jessie Usaga
- National Center of Food Science and Technology (CITA), University of Costa Rica, Ciudad Universitaria Rodrigo Facio, San Jośe 11501-2060, Costa Rica
| | - Cosmin Pompei Dărab
- Faculty of Electrical Engineering, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
| | - Cristina Burja-Udrea
- Industrial Engineering and Management Department, Faculty of Engineering, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania
| | - Haifeng Zhao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Research Institute for Food Nutrition and Human Health, Guangzhou 510640, China
| | - Anca Corina Fărcaș
- Department of Food Science, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
| | - Teodora Emilia Coldea
- Department of Food Engineering, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
- Centre for Technology Transfer-BioTech, 64 Calea Florești, 400509 Cluj-Napoca, Romania
- Correspondence:
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14
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Sun L, Guo W, Zhai Y, Zhao L, Liu T, Yang L, Jin Y, Duan Y. Screening and the ability of biogenic amine-degrading strains from traditional meat products in Inner Mongolia. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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15
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Han B, Gao J, Han X, Deng H, Wu T, Li C, Zhan J, Huang W, You Y. Hanseniaspora uvarum FS35 degrade putrescine in wine through the direct oxidative deamination pathway of copper amine oxidase 1. Food Res Int 2022; 162:111923. [DOI: 10.1016/j.foodres.2022.111923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/23/2022] [Accepted: 09/07/2022] [Indexed: 11/04/2022]
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16
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Fu J, Wang L, Sun J, Ju N, Jin G. Malolactic Fermentation: New Approaches to Old Problems. Microorganisms 2022; 10:microorganisms10122363. [PMID: 36557616 PMCID: PMC9781322 DOI: 10.3390/microorganisms10122363] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/24/2022] [Accepted: 11/27/2022] [Indexed: 12/03/2022] Open
Abstract
Malolactic fermentation (MLF) is the decarboxylation of L-malic acid to L-lactic acid by lactic acid bacteria (LAB). For the majority of wine production, secondary fermentation is crucial. MLF significantly impacts the quality of most red and some white wine. The outcomes of the spontaneously initiated and finished MLF are frequently unpredictable and can even cause the wine to deteriorate. As a result, individuals typically favour inoculating superior starter cultures when performing MLF. The MLF method for wine has, however, faced new difficulties because of the altered wine fermentation substrate environment brought on by global climate change, the growing demands of winemakers for production efficiency, and the rising demand for high-quality wine. To serve as a reference for the study of wine production and MLF in the current situation, this review primarily updates and summarises the research findings on increasing the effectiveness and dependability of MLF in recent years.
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Affiliation(s)
- Junwei Fu
- School of Food and Wine, Ningxia University, Yinchuan 750021, China
| | - Ling Wang
- School of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Jingxian Sun
- School of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Ning Ju
- School of Food and Wine, Ningxia University, Yinchuan 750021, China
- Correspondence: (N.J.); (G.J.)
| | - Gang Jin
- School of Food and Wine, Ningxia University, Yinchuan 750021, China
- Engineering Research Center of Grape and Wine, Ministry of Education, Yinchuan 750021, China
- Correspondence: (N.J.); (G.J.)
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17
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Yilmaz N, Özogul F, Moradi M, Fadiloglu EE, Šimat V, Rocha JM. Reduction of biogenic amines formation by foodborne pathogens using postbiotics in lysine-decarboxylase broth. J Biotechnol 2022; 358:118-127. [PMID: 36087781 DOI: 10.1016/j.jbiotec.2022.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/03/2022] [Accepted: 09/05/2022] [Indexed: 01/09/2023]
Abstract
Postbiotics is a novel term proposed to describe as a set of bioactive compounds obtained from beneficial microorganisms. In this work, postbiotics from four lactic acid bacteria (LAB) including Leuconostoc mesenteroides subsp. cremoris, Pediococcus acidilactici, Lactococcus lactis subsp. lactis and Streptococcus thermophilus were prepared in MRS broth. The antimicrobial properties and organic acids content of postbiotics were also investigated. Postbiotics were used to tentatively reduce the production of biogenic amines by foodborne pathogens (i.e., Salmonella paratyphi A and Escherichia coli) on lysine decarboxylase broth (LDB). Experimental data showed that acetic, propionic, and butyric acids were in the range of 387.51-709.21 mg/L, 0.00-1.28 mg/L, and 0.00-20.98 mg/L, respectively. The inhibition zone of postbiotics on E. coli and S. paratyphi A were 11.67, and 12.33 mm, respectively. Two different levels of postbiotics (25%, and 50%) were used in LDB to measure the diamines (cadaverine and putrescine), polyamines (agmatine, spermidine, and spermine, ammonia), and other biogenic amine formation by pathogens. E. coli produced cadaverine and putrescine with concentrations of 1072.21 and 1114.18 mg/L, respectively. The postbiotics reduced cadaverine formation by 67% in E. coli, and cadaverine production was mostly suppressed by postbiotics from P. acidilactici in E. coli (97%) and L. lactis subsp. lactis in S. paratyphi A (90%). Putrescine production by E. coli was reduced by 94% with postbiotics of P. acidilactici at a concentration of 25%, whereas putrescine production by S. paratyphi A has been decreased by 61% in the presence of postbiotics from L. lactis subsp. Lactis with a 25% concentration. The results revealed that an increase in postbiotics concentration (from 25% to 50%) in LDB may lead to synergistic effects, resulting from the production of biogenic amines by microbial pathogens. It was importantly concluded that postbiotics of LAB may degrade biogenic amines or prevent their formation by foodborne pathogens.
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Affiliation(s)
- Nurten Yilmaz
- Department of Animal Science, Faculty of Agriculture, Cukurova University, Adana, Turkey.
| | - Fatih Özogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Adana, Turkey.
| | - Mehran Moradi
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, the Islamic Republic of Iran.
| | - Eylem Ezgi Fadiloglu
- Department of Gastronomy and Culinary Arts, School of Applied Sciences, Yaşar University, İzmir, Turkey.
| | - Vida Šimat
- University Department of Marine Studies, University of Split, Ruđera Boškovića 37, 21000 Split, Croatia.
| | - João Miguel Rocha
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
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18
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Bioprotective Effect of a Torulaspora delbrueckii/Lachancea thermotolerans-Mixed Inoculum in Red Winemaking. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8070337] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
One of the alternatives to SO2 as an antimicrobial is the use of bioprotection yeasts, which colonize the medium preventing the proliferation of undesirable microorganisms. In this work, the bioprotective effect of a mixed inoculum formed by Torulaspora delbrueckii/Lachancea thermotolerans during fermentation was evaluated. For this purpose, fermentations were carried out using this mixed inoculum and the populations of yeasts, lactic bacteria and acetic bacteria, and the physical–chemical parameters of the wines obtained were studied. The results were compared with those obtained in spontaneous fermentation with and without SO2. The different fermentation strategies caused a differentiation in the yeast species present during fermentation. Regarding populations of lactic acid bacteria, results showed that the effect of the addition of the mixed inoculum was comparable to that exerted by SO2. On the other hand, due to the high sensitivity of acetic acid bacteria to SO2, the sulfite vinifications showed a lower population of acetic acid bacteria in the early stages of fermentation, followed by the vinifications with the mixed inoculum.
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19
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Vicente J, Baran Y, Navascués E, Santos A, Calderón F, Marquina D, Rauhut D, Benito S. Biological management of acidity in wine industry: A review. Int J Food Microbiol 2022; 375:109726. [DOI: 10.1016/j.ijfoodmicro.2022.109726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 10/18/2022]
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20
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Detection and relative quantification of amine oxidase gene ( yobN) in Bacillus subtilis: application of real-time quantitative PCR. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2022; 59:909-916. [PMID: 35185199 PMCID: PMC8814243 DOI: 10.1007/s13197-021-05090-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 01/28/2021] [Accepted: 04/01/2021] [Indexed: 10/21/2022]
Abstract
Degradation of undesirable biogenic amines (BAs) in foodstuffs by microorganisms is considered one of the most effective ways of eliminating their toxicity. In this study, we design two sets of primers for the detection and quantification of the amine oxidase gene (yobN) and endogenous (housekeeping) gene (gyrB) in Bacillus subtilis. Moreover, these sets can be used for relative quantification of yobN by real-time PCR (qPCR). We also tested the degradation of BAs by three bacterial strains (B. subtilis strains: IB1a, CCM 2216, CCM 2267) in a mineral medium over a two-day period. Their degradation abilities were verified by high performance liquid chromatography with UV detection (HPLC/UV). According to the results, two strains significantly (P < 0.05) reduced histamine, tyramine, putrescine, and cadaverine. Moreover, our results indicate that the degradation ability of B. subtilis strains could be limited by sporulation because the gene encoding amine oxidase (yobN) is no longer expressed in the spores.
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21
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Stój A, Płotka-Wasylka J, Simeonov V, Kapłan M. The content of biogenic amines in Rondo and Zweigelt wines and correlations between selected wine parameters. Food Chem 2022; 371:131172. [PMID: 34563969 DOI: 10.1016/j.foodchem.2021.131172] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/24/2021] [Accepted: 09/15/2021] [Indexed: 12/28/2022]
Abstract
The purpose of this study was to evaluate the content of biogenic amines (BAs) in wines using dispersive liquid-liquid microextraction-gas chromatography-mass spectrometry (DLLME-GC-MS). An additional objective was to assess the correlations between selected parameters characterizing the samples such as the content of BAs, sugars, and organic acids, pH, and total acidity. Wines produced from the same grape variety in which alcoholic fermentation (AF) was carried out by different yeast strains and in which malolactic fermentation (MLF) was spontaneous, differed in the content of biogenic amines. The concentrations of putrescine, cadaverine and tryptamine were higher in the Rondo wines (237-405, 34.04-61.11, <LOD-12.456 µg/L, respectively) and Zweigelt wines (416-489, 72.67-88.43, <LOD-13.083 µg/L, respectively) subjected to spontaneous MLF than in the wines subjected to induced MLF. Chemometric analysis allowed us to determine correlations between selected wine parameters. The wine samples are well separated into two patterns depending on the grape variety. Despite the fact that information on BAs is not included in databases of wine composition, information on their concentration as well as knowledge of existing correlations between BAs and other wine parameters is crucial and may be useful for the food industry, health professionals and consumers.
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Affiliation(s)
- Anna Stój
- Department of Biotechnology, Microbiology and Human Nutrition, Faculty of Food Science and Biotechnology, University of Life Sciences, Skromna 8, 20-704 Lublin, Poland
| | - Justyna Płotka-Wasylka
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland.
| | - Vasil Simeonov
- Faculty of Chemistry and Pharmacy, University of Sofia, Sofia 1126, Bulgaria
| | - Magdalena Kapłan
- Institute of Horticulture Production, University of Life Sciences, 28 Głęboka Street, 20-612 Lublin, Poland
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MOGHADAM MAM, ANVAR SA, AMINI K, KHANI M. The effect of Lactococcus lactis and Bifidobacterium bifidum probiotics cell free supernatants on the expression of HDC and TDC genes in Staphylococcus strains isolated from milk. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.03221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Chen Y, Wu C, Xu W, Lu Z, Fu R, He X, Ma Z, Zhang H. Evaluation of degradation capability of nitrite and biogenic amines of lactic acid bacteria isolated from pickles and potential in sausage fermentation. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Yingqi Chen
- College of Biological and Pharmaceutical Science Guangdong University of Technology Guangzhou China
| | - Changli Wu
- College of Biological and Pharmaceutical Science Guangdong University of Technology Guangzhou China
| | - Weiying Xu
- College of Biological and Pharmaceutical Science Guangdong University of Technology Guangzhou China
| | - Ziying Lu
- College of Biological and Pharmaceutical Science Guangdong University of Technology Guangzhou China
| | - Rong Fu
- College of Biological and Pharmaceutical Science Guangdong University of Technology Guangzhou China
| | - Xinyi He
- College of Biological and Pharmaceutical Science Guangdong University of Technology Guangzhou China
| | - Zhuolin Ma
- College of Biological and Pharmaceutical Science Guangdong University of Technology Guangzhou China
| | - Hongmei Zhang
- College of Biological and Pharmaceutical Science Guangdong University of Technology Guangzhou China
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Wang D, Hu G, Wang H, Wang L, Zhang Y, Zou Y, Zhao L, Liu F, Jin Y. Effect of Mixed Starters on Proteolysis and Formation of Biogenic Amines in Dry Fermented Mutton Sausages. Foods 2021; 10:2939. [PMID: 34945490 PMCID: PMC8700690 DOI: 10.3390/foods10122939] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/13/2021] [Accepted: 11/23/2021] [Indexed: 11/30/2022] Open
Abstract
In this study, by comparing the four groups of sausages, namely, CO (without starter culture), LB (with Lactobacillus sakei), LS (with L. sakei 3X-2B + Staphylococcus xylosus SZ-8), and LSS (with L. sakei 3X-2B + S. xylosus SZ-8 + S. carnosus SZ-2), the effects of mixed starter cultures on physical-chemical quality, proteolysis, and biogenic amines (BAs) during fermentation and ripening were investigated. Inoculation of the mixed starter cultures increased the number of lactic acid bacteria and staphylococci in sausages during fermentation and ripening for 0 to 5 days. The L. sakei 3X-2B + S. xylosus SZ-8 + S. carnosus SZ-2 mixed starter accelerated the rate of acid production and water activity reduction of sausages and improved the redness value. Compared with CO, the mixed starter effectively inhibited Enterobacteriaceae. At the end of ripening, the LSS group was approximately 1.25 CFU/g, which was less than the CO group, thereby reducing the total volatile basic nitrogen (TVB-N) in the LSS group. The free amino acids in the LS and LSS groups (224.97 and 235.53 mg/kg dry sausage, respectively) were significantly (p < 0.001) higher than that in the CO group (170.93 mg/kg dry sausage). The level of histamine, cadaverine, putrescine, and common BAs showed an opposite trend to the increase of the corresponding precursor amino acid content, which were significantly lower (p < 0.001) in the LS and LSS sausages than in CO. This study showed that L. sakei 3X-2B + S. xylosus SZ-8 + S. carnosus SZ-2 is a potential mixed starter for fermented meat products.
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Affiliation(s)
- Debao Wang
- Department of Food Science, College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; (D.W.); (G.H.); (H.W.); (L.Z.)
- Institute of Agricultural and Livestock Products Processing, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (L.W.); (Y.Z.)
| | - Guanhua Hu
- Department of Food Science, College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; (D.W.); (G.H.); (H.W.); (L.Z.)
| | - Huiting Wang
- Department of Food Science, College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; (D.W.); (G.H.); (H.W.); (L.Z.)
| | - Limei Wang
- Institute of Agricultural and Livestock Products Processing, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (L.W.); (Y.Z.)
| | - Yuanyuan Zhang
- Institute of Agricultural and Livestock Products Processing, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, China; (L.W.); (Y.Z.)
| | - Yufu Zou
- Zhengxiang White Banner Mengsheng Meat Industry Co., Ltd., Xilingol 013800, China;
| | - Lihua Zhao
- Department of Food Science, College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; (D.W.); (G.H.); (H.W.); (L.Z.)
| | - Fang Liu
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Ye Jin
- Department of Food Science, College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; (D.W.); (G.H.); (H.W.); (L.Z.)
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Zhang L, Zhang M, Mujumdar AS. New technology to overcome defects in production of fermented plant products- a review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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26
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Singhal N, Singh NS, Mohanty S, Kumar M, Virdi JS. Rhizospheric Lactobacillus plantarum (Lactiplantibacillus plantarum) strains exhibit bile salt hydrolysis, hypocholestrolemic and probiotic capabilities in vitro. Sci Rep 2021; 11:15288. [PMID: 34315963 DOI: 10.21203/rs.3.rs-806530/v1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 07/16/2021] [Indexed: 05/27/2023] Open
Abstract
Lactobacillus plantarum (renamed as Lactiplantibacillus plantarum) has been isolated from many sources but very rarely from rhizospheric soil. This is the first report on isolation and assessment of probiotic capabilities of L. plantarum strains isolated from rhizospheric soil. The isolates were confirmed by 16S rRNA gene sequencing and named as NS14, NS16 and NGG. All the isolates were evaluated for bile salt hydrolysis, hypocholestrolemic potential and probiotic attributes. Our results indicated that all the strains harboured bsh and showed in vitro cholesterol assimilation capabilities which increased when bile salts were also present in the culture medium. Also, all the strains remained viable at high temperatures and in the presence of NaCl, lysozyme, simulated gastric juice, bile salts and, exhibited auto- and co-aggregation capabilities. Additionally, L. plantarum strain NS14 survived in the presence of phenols, acidic environment (pH 2-3) and was resistant to many clinically relevant antibiotics. Since, L. plantarum NS14 exhibited most of the desirable and essential characteristics of a probiotic it should be further investigated as a potent probiotic with an additional benefit as a hypocholesterolemic biotherapeutic. Moreover, rhizosphere can be explored as a useful ecological niche for isolating microorganisms with biotechnological and probiotic potential.
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Affiliation(s)
- Neelja Singhal
- Department of Biophysics, University of Delhi South Campus, New Delhi, India.
| | | | - Shilpa Mohanty
- Department of Microbiology, University of Delhi South Campus, New Delhi, India
| | - Manish Kumar
- Department of Biophysics, University of Delhi South Campus, New Delhi, India
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Rhizospheric Lactobacillus plantarum (Lactiplantibacillus plantarum) strains exhibit bile salt hydrolysis, hypocholestrolemic and probiotic capabilities in vitro. Sci Rep 2021; 11:15288. [PMID: 34315963 PMCID: PMC8316525 DOI: 10.1038/s41598-021-94776-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 07/16/2021] [Indexed: 11/26/2022] Open
Abstract
Lactobacillus plantarum (renamed as Lactiplantibacillus plantarum) has been isolated from many sources but very rarely from rhizospheric soil. This is the first report on isolation and assessment of probiotic capabilities of L. plantarum strains isolated from rhizospheric soil. The isolates were confirmed by 16S rRNA gene sequencing and named as NS14, NS16 and NGG. All the isolates were evaluated for bile salt hydrolysis, hypocholestrolemic potential and probiotic attributes. Our results indicated that all the strains harboured bsh and showed in vitro cholesterol assimilation capabilities which increased when bile salts were also present in the culture medium. Also, all the strains remained viable at high temperatures and in the presence of NaCl, lysozyme, simulated gastric juice, bile salts and, exhibited auto- and co-aggregation capabilities. Additionally, L. plantarum strain NS14 survived in the presence of phenols, acidic environment (pH 2–3) and was resistant to many clinically relevant antibiotics. Since, L. plantarum NS14 exhibited most of the desirable and essential characteristics of a probiotic it should be further investigated as a potent probiotic with an additional benefit as a hypocholesterolemic biotherapeutic. Moreover, rhizosphere can be explored as a useful ecological niche for isolating microorganisms with biotechnological and probiotic potential.
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28
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Xu X, Li T, Ji Y, Jiang X, Shi X, Wang B. Origin, Succession, and Control of Biotoxin in Wine. Front Microbiol 2021; 12:703391. [PMID: 34367103 PMCID: PMC8339702 DOI: 10.3389/fmicb.2021.703391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/22/2021] [Indexed: 11/13/2022] Open
Abstract
Wine is a worldwide alcoholic beverage with antioxidant active substances and complex flavors. Moderate drinking of wine has been proven to be beneficial to health. However, wine has some negative components, such as residual pesticides, heavy metals, and biotoxins. Of these, biotoxins from microorganisms were characterized as the most important toxins in wine. Wine fermentation mainly involves alcoholic fermentation, malolactic fermentation, and aging, which endue wine with complex flavors and even produce some undesirable metabolites. These metabolites cause potential safety risks that are not thoroughly understood. This review aimed to investigate the origin, evolution, and control technology of undesirable metabolites (e.g., ochratoxin A, ethyl carbamate, and biogenic amines) in wine. It also highlighted current wine industry practices of minimizing the number of biotoxins in wine.
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Affiliation(s)
| | | | | | | | - Xuewei Shi
- School of Food Science and Technology, Shihezi University, Shihezi, China
| | - Bin Wang
- School of Food Science and Technology, Shihezi University, Shihezi, China
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29
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Arellano K, Vazquez J, Park H, Lim J, Ji Y, Kang HJ, Cho D, Jeong HW, Holzapfel WH. Safety Evaluation and Whole-Genome Annotation of Lactobacillus plantarum Strains from Different Sources with Special Focus on Isolates from Green Tea. Probiotics Antimicrob Proteins 2021; 12:1057-1070. [PMID: 31786735 DOI: 10.1007/s12602-019-09620-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Lactobacillus plantarum shows high intraspecies diversity species, and has one of the largest genome sizes among the lactobacilli. It is adapted to diverse environments and provides a promising potential for various applications. The aim of the study was to investigate the safety and probiotic properties of 18 L. plantarum strains isolated from fermented food products, green tea, and insects. For preliminary safety evaluation the L. plantarum strains were tested for their ability to produce hemolysin and biogenic amines and for their antibiotic resistance. Based on preliminary safety screening, four strains isolated from green tea showed antibiotic resistance below the cut-off MIC values suggested by EFSA, and were selected out of the 18 strains for more detailed studies. Initial selection of strains with putative probiotic potential was determined by their capacity to survive in the human GIT using an in vitro simulation model, and for their adhesion to human Caco-2/TC-7 cell line. Under simulated GIT conditions, all four L. plantarum strains isolated from green tea showed higher survival rates than the control (L. plantarum subsp. plantarum ATCC 14917). All studied strains were genetically identified by 16S rRNA gene sequencing and confirmed to be L. plantarum. In addition, whole-genome sequence analysis of L. plantarum strains APsulloc 331261 and APsulloc 331263 from green tea was performed, and the outcome was compared with the genome of L. plantarum strain WCFS1. The genome was also annotated, and genes related to virulence factors were searched for. The results suggest that L. plantarum strains APsulloc 331261 and APsulloc 331263 can be considered as potential beneficial strains for human and animal applications.
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Affiliation(s)
- Karina Arellano
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Jorge Vazquez
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Haryung Park
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Juhwan Lim
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Yosep Ji
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
- Holzapfel Effective Microbes Inc, Iui-dong 1286, Suwon-si, Gyeonggi-do, 31286, South Korea
| | - Hye-Ji Kang
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Donghyun Cho
- Vital Beautie Research Division, Amorepacific R&D Center, Yonggin-si, Gyeonggi-do, 17074, South Korea
| | - Hyun Woo Jeong
- Vital Beautie Research Division, Amorepacific R&D Center, Yonggin-si, Gyeonggi-do, 17074, South Korea
| | - Wilhelm Heinrich Holzapfel
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea.
- Holzapfel Effective Microbes Inc, Iui-dong 1286, Suwon-si, Gyeonggi-do, 31286, South Korea.
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Alfonzo A, Prestianni R, Gaglio R, Matraxia M, Maggio A, Naselli V, Craparo V, Badalamenti N, Bruno M, Vagnoli P, Settanni L, Moschetti G, Francesca N. Effects of different yeast strains, nutrients and glutathione-rich inactivated yeast addition on the aroma characteristics of Catarratto wines. Int J Food Microbiol 2021; 360:109325. [PMID: 34281717 DOI: 10.1016/j.ijfoodmicro.2021.109325] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 11/26/2022]
Abstract
Catarratto is one of the most common non-aromatic white grape varieties cultivated in Sicily (Southern Italy). In order to improve the aromatic expression of Catarratto wines a trial was undertaken to investigate the effect of yeast strain, nutrition and reduced glutathione. Variables included two Saccharomyces cerevisiae strains, an oenological strain (GR1) and one isolated from honey by-products (SPF52), three different nutrition regimes (Stimula Sauvignon Blanc™ (SS), Stimula Chardonnay™ (SC) and classic nutrition practice), and a specific inactivated yeast rich in reduced glutathione to prevent oxidative processes [Glutastar™ (GIY)] ensuing in ten treatments (T1-T10). Microbiological and chemical parameters demonstrated the aptitude of strain SPF52 to successfully conduct alcoholic fermentation. During fermentation, the Saccharomyces yeast populations ranged from 7 to 8 logarithmic CFU/mL. All wines had a final ethanol content ranging between 12.91 and 13.85% (v/v). The dominance of the two starter strains over native yeast populations was higher than 97% as estimated by interdelta analysis. The addition of nutrients SS or SC increased the aromatic complexity of the wines as reflected by volatile organic compounds (VOCs) composition and sensory profiles. In particular, 32 VOCs were identified; alcohols (62.46-81.1%), thiols (0.27-0.87%), ethers (0.09-0.16%), aldehydes (0-1.21%), ketones (0-2.28%), carboxylic acids (4.21-12.32%), esters (0-10.85%), lactones (0.9-1.49%) and other compounds (0.77-6.9%). Sensory analysis demonstrated a significant impact on wine aroma in relation to yeast starter strain used, the type of nutrition (SS, SC or classic nutrition) and the presence/absence of GIY. The wines produced with GR1 yeast strain and SS (T2), SPF52 with SC (T9) both in presence of GIY showed higher overall quality. Trials T2 and T9 showed the highest scores for 13 and 18 attributes, respectively. The different nutrition, addition of GIY and the yeast starter strains diversified and enhanced sensory expression of Catarratto wines.
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Affiliation(s)
- Antonio Alfonzo
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Rosario Prestianni
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Raimondo Gaglio
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Michele Matraxia
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Antonella Maggio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Parco d'Orleans II, Palermo, building 17, Italy
| | - Vincenzo Naselli
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Valentina Craparo
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Natale Badalamenti
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Parco d'Orleans II, Palermo, building 17, Italy
| | - Maurizio Bruno
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Parco d'Orleans II, Palermo, building 17, Italy
| | - Paola Vagnoli
- Lallemand Italia, Via Rossini 14/B, 37060, Castel D'Azzano, VR, Italy
| | - Luca Settanni
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Giancarlo Moschetti
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy
| | - Nicola Francesca
- Department of Agricultural, Food and Forest Science, University of Palermo, Viale delle Scienze 4, 90128 Palermo, Italy.
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The Combined Use of Lachancea thermotolerans and Lactiplantibacillus plantarum (former Lactobacillus plantarum) in Wine Technology. Foods 2021; 10:foods10061356. [PMID: 34199225 PMCID: PMC8232010 DOI: 10.3390/foods10061356] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 12/30/2022] Open
Abstract
Most commercialized red wines are produced through alcoholic fermentation performed by yeasts of the Saccharomyces genus, and a second fermentation performed by lactic bacteria of the Oenococus oeni species once the first is completely finished. However, the classical process can suffer complications, of which the risks can increase in grape juices with high contents of sugar and pH. Due to climate change, these situations are becoming more common in the winemaking industry. The main risks in those scenarios are alcoholic-fermentation stops or sluggish and undesirable bacteria development while alcoholic fermentation is not finished yet and wine still contains residual sugars. The study propose a novel alternative that offers a solution or reduces the risk of those scenarios while increasing acidity, which is another serious problem of warm viticulture regions. The alternative consists of the combined use of Lachancea thermotolerans to reduce the pH of musts that suffer from a lack of acidity, Lactiplantibacillus plantarum (formerly Lactobacillus plantarum) to achieve malic acid stability during the first stages of alcoholic fermentation, and Saccharomyces bayanus to complete the alcoholic fermentation in difficult wines of high potential alcohol degree of over 15% (v/v). The new proposed biotechnology produced wines with higher final concentrations in lactic acid, glycerol, color intensity, ethyl lactate and 2-phenyl ethyl acetate in 2.39 g/L, 0.52 g/L, 21%, 48% and 37% respectively than the classical methodology where Saccharomyces genus performs alcoholic fermentation and later Oenococus oeni performs malolactic fermentation. Additionally, the new alternative produced wines with lower concentration in ethanol, pH, acetic acid, ethyl acetate, diacetyl and 1-propanol in 0.37% (v/v), 0.26, 0.08 g/L, 22%, 69% and 28% respectively than the classic method.
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The impact of cell-free supernatants of Lactococcus lactis subsp. lactis strains on the tyramine formation of Lactobacillus and Lactiplantibacillus strains isolated from cheese and beer. Food Microbiol 2021; 99:103813. [PMID: 34119100 DOI: 10.1016/j.fm.2021.103813] [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: 09/23/2020] [Revised: 11/24/2020] [Accepted: 04/12/2021] [Indexed: 11/23/2022]
Abstract
Tyramine is one of the most toxic biogenic amines and it is produced commonly by lactic acid bacteria in fermented food products. In present study, we investigated the influence of selected nisin-producing Lactococcus lactis subsp. lactis strains and their cell-free supernatants (CFSs) on tyramine production by four Lactobacillus and two Lactiplantibacillus strains isolated from cheese and beer. Firstly, we examined the antimicrobial effect of the CFSs from twelve Lactococcus strains against tested tyramine producers by agar-well diffusion assay. Six Lactococcus strains whose CFSs showed the highest antimicrobial effect on tyramine producers were further studied. Secondly, we investigated the influence of the selected six Lactococcus strains and their respective CFSs on tyramine production by tested Lactobacillus and Lactiplantibacillus strains in MRS broth supplemented with 2 g.L-1 of l-tyrosine. Tyramine production was monitored by HPLC-UV. The tyramine formation of all tested Lactobacillus and Lactiplantibacillus strains was not detected in the presence of Lc. lactis subsp. lactis CCDM 71 and CCDM 702, and their CFSs. Moreover, the remainder of the investigated Lactococcus strains (CCDM 670, CCDM 686, CCDM 689 and CCDM 731) and their CFSs decreased tyramine production significantly (P < 0.05) - even suppressing it completely in some cases - in four of the six tested tyramine producing strains.
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Li B, Wang Y, Xue L, Lu S. Heterologous Expression and Application of Multicopper Oxidases from Enterococcus spp. for Degradation of Biogenic Amines. Protein Pept Lett 2021; 28:183-194. [PMID: 32543357 DOI: 10.2174/0929866527666200616160859] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Biogenic amines are harmful to human health at a certain extent. As a kind of biogenic amine oxidase, multicopper oxidase can be used to degrade them. Currently, the literature about enzyme from Enterococcus spp. are limited, and recombinant multicopper oxidase might be an effective way to degrade biogenic amines. OBJECTIVE (i) Select and identify strains that can degrade biogenic amines, (ii) overexpress enzyme from Enterococcus spp., (iii) measure gene expression and probe amine-degradation differences among strains (native, E. coli DH5α, and L. delbruckii), and (iv) examine the biochemical properties of recombinant multicopper oxidase, (v) apply the recombinant enzyme into smoked horsemeat sausage. METHODS Reverse transcription PCR and high-performance liquid chromatography were performed to examine gene expression and amine degradation rate. RESULTS The results demonstrated that target enzymes were successfully overexpressed, accompanied by increased amine-degrading activity (P <0.05). Gene from E. faecalis M5B was expressed in L. delbrueckii resulted in degradation rates for phenylethylamine, putrescine, histamine and tyramine of 54%, 52%, 70% and 40%, respectively, significantly higher than achieved by other recombinant strains. CONCLUSION In this work, gene expression levels were higher in recombinant M5B than recombinant M2B, regardless of host. E. coli is more stable to express multicopper oxidase. Besides, the amine-degrading ability was markedly increased in the two recombinant strains. After prolonged incubation, the recombinant enzyme could degrade three amines, and it displayed high alkali resistance and thermostability.
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Affiliation(s)
- Binbin Li
- College of Food Science, Shihezi University, Shihezi 832000, China
| | - Yuan Wang
- College of Food Science, Shihezi University, Shihezi 832000, China
| | - Linlin Xue
- College of Food Science, Shihezi University, Shihezi 832000, China
| | - Shiling Lu
- College of Food Science, Shihezi University, Shihezi 832000, China
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Shao X, Xu B, Chen C, Li P, Luo H. The function and mechanism of lactic acid bacteria in the reduction of toxic substances in food: a review. Crit Rev Food Sci Nutr 2021; 62:5950-5963. [PMID: 33683156 DOI: 10.1080/10408398.2021.1895059] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
N-nitrosamines, heterocyclic amines, polycyclic aromatic hydrocarbons, biogenic amines, and acrylamide are widely distributed and some of the most toxic substances detected in foods. Hence, reduction of these substances has attracted worldwide attention. Lactic acid bacteria (LAB) inoculation has been found to be an effective way to reduce these toxic substances. In this paper, the reduction of toxic substances by LAB and its underlying mechanisms have been described through the review of recent studies. LAB aids this reduction via different mechanisms. First, it can directly decrease these harmful substances through adsorption or degradation. Peptidoglycans on the cell wall of LAB can bind to heterocyclic amines, acrylamide, and polycyclic aromatic hydrocarbons. Second, LAB can indirectly decrease the content of toxic substances by reducing their precursors. Third, antioxidant properties of LAB also contribute to the reduction in toxic substances. Finally, LAB can suppress the growth of amino acid decarboxylase-positive bacteria, thus reducing the accumulation of biogenic amines and N-nitrosamines. Therefore, LAB can contribute to the decrease in toxic substances in food and improve food safety. Further research on increasing the reduction efficiency of LAB and deciphering the mechanisms at a molecular level needs to be carried out to obtain the complete picture.
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Affiliation(s)
- Xuefei Shao
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei, China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Baocai Xu
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei, China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Conggui Chen
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei, China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Peijun Li
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei, China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Huiting Luo
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, Hefei University of Technology, Hefei, China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
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Biodiversity of Oenological Lactic Acid Bacteria: Species- and Strain-Dependent Plus/Minus Effects on Wine Quality and Safety. FERMENTATION 2021. [DOI: 10.3390/fermentation7010024] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Winemaking depends on several elaborate biochemical processes that see as protagonist either yeasts or lactic acid bacteria (LAB) of oenological interest. In particular, LAB have a fundamental role in determining the quality chemical and aromatic properties of wine. They are essential not only for malic acid conversion, but also for producing several desired by-products due to their important enzymatic activities that can release volatile aromatic compounds during malolactic fermentation (e.g., esters, carbonyl compounds, thiols, monoterpenes). In addition, LAB in oenology can act as bioprotectors and reduce the content of undesired compounds. On the other hand, LAB can affect wine consumers’ health, as they can produce harmful compounds such as biogenic amines and ethyl carbamate under certain conditions during fermentation. Several of these positive and negative properties are species- and strain-dependent characteristics. This review focuses on these aspects, summarising the current state of knowledge on LAB’s oenological diversity, and highlighting their influence on the final product’s quality and safety. All our reported information is of high interest in searching new candidate strains to design starter cultures, microbial resources for traditional/typical products, and green solutions in winemaking. Due to the continuous interest in LAB as oenological bioresources, we also underline the importance of inoculation timing. The considerable variability among LAB species/strains associated with spontaneous consortia and the continuous advances in the characterisation of new species/strains of interest for applications in the wine sector suggest that the exploitation of biodiversity belonging to this heterogeneous group of bacteria is still rising.
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Virdis C, Sumby K, Bartowsky E, Jiranek V. Lactic Acid Bacteria in Wine: Technological Advances and Evaluation of Their Functional Role. Front Microbiol 2021; 11:612118. [PMID: 33519768 PMCID: PMC7843464 DOI: 10.3389/fmicb.2020.612118] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/23/2020] [Indexed: 12/21/2022] Open
Abstract
Currently, the main role of Lactic Acid Bacteria (LAB) in wine is to conduct the malolactic fermentation (MLF). This process can increase wine aroma and mouthfeel, improve microbial stability and reduce the acidity of wine. A growing number of studies support the appreciation that LAB can also significantly, positively and negatively, contribute to the sensorial profile of wine through many different enzymatic pathways. This is achieved either through the synthesis of compounds such as diacetyl and esters or by liberating bound aroma compounds such as glycoside-bound primary aromas and volatile thiols which are odorless in their bound form. LAB can also liberate hydroxycinnamic acids from their tartaric esters and have the potential to break down anthocyanin glucosides, thus impacting wine color. LAB can also produce enzymes with the potential to help in the winemaking process and contribute to stabilizing the final product. For example, LAB exhibit peptidolytic and proteolytic activity that could break down the proteins causing wine haze, potentially reducing the need for bentonite addition. Other potential contributions include pectinolytic activity, which could aid juice clarification and the ability to break down acetaldehyde, even when bound to SO2, reducing the need for SO2 additions during winemaking. Considering all these findings, this review summarizes the novel enzymatic activities of LAB that positively or negatively affect the quality of wine. Inoculation strategies, LAB improvement strategies, their potential to be used as targeted additions, and technological advances involving their use in wine are highlighted along with suggestions for future research.
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Affiliation(s)
- Carla Virdis
- Department of Wine Science, University of Adelaide, Urrbrae, SA, Australia
| | - Krista Sumby
- Department of Wine Science, University of Adelaide, Urrbrae, SA, Australia
- Australian Research Council Training Centre for Innovative Wine Production, Urrbrae, SA, Australia
| | - Eveline Bartowsky
- Australian Research Council Training Centre for Innovative Wine Production, Urrbrae, SA, Australia
- Lallemand Australia, Edwardstown, SA, Australia
| | - Vladimir Jiranek
- Department of Wine Science, University of Adelaide, Urrbrae, SA, Australia
- Australian Research Council Training Centre for Innovative Wine Production, Urrbrae, SA, Australia
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Wang M, Ouyang X, Liu Y, Liu Y, Cheng L, Wang C, Zhu B, Zhang B. Comparison of nutrients and microbial density in goji berry juice during lactic acid fermentation using four lactic acid bacteria strains. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mengze Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Department of Food Science College of Biological Sciences and Biotechnology Beijing Forestry University Beijing China
| | - Xiaoyu Ouyang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Department of Food Science College of Biological Sciences and Biotechnology Beijing Forestry University Beijing China
| | - Yaran Liu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Department of Food Science College of Biological Sciences and Biotechnology Beijing Forestry University Beijing China
| | - Yue Liu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Department of Food Science College of Biological Sciences and Biotechnology Beijing Forestry University Beijing China
| | - Lei Cheng
- Beijing Engineering and Technology Research Center of Food Additives Beijing Technology and Business University Beijing China
| | - Chengtao Wang
- Beijing Engineering and Technology Research Center of Food Additives Beijing Technology and Business University Beijing China
| | - Baoqing Zhu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Department of Food Science College of Biological Sciences and Biotechnology Beijing Forestry University Beijing China
| | - Bolin Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Department of Food Science College of Biological Sciences and Biotechnology Beijing Forestry University Beijing China
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Kinoshita H, Hariu M, Nakashima Y, Watanabe K, Yasuda S, Igoshi K. Lactic acid bacterial exopolysaccharides strongly bind histamine and can potentially be used to remove histamine contamination in food. MICROBIOLOGY-SGM 2020; 167. [PMID: 33264088 DOI: 10.1099/mic.0.000936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The symptoms of foodborne histamine poisoning are similar to those of IgE-mediated food allergies. In this study, we investigated the histamine-binding capacity of lactic acid bacteria (LAB) strains as potential preventive agents against histamine poisoning. Histamine biosorption capacity was determined for 16 LAB strains. Leuconostoc mesenteroides TOKAI 51 m, Lactobacillus paracasei TOKAI 65 m, Lactobacillus plantarum TOKAI 111 m and Pediococcus pentosaceus TOKAI 759 m showed especially high biosorption rates and reached saturation within 30 min. Adsorption isotherms showed better conformance to the Freundlich model than to the Langmuir model. Analyses after heat, periodic acid and guanidine hydrochloride treatments suggested that histamine was bound to the bacterial cell surface. HPLC analysis revealed that exopolysaccharides produced by Lact. paracasei TOKAI 65 m strongly bound to histamine. In the detachment test with 1 mol l-1 HCl solution, the dissociation rate of histamine for Lact. paracasei TOKAI 65 m was <10 %. This strain is presumably a suitable candidate for use against histamine poisoning.
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Affiliation(s)
- Hideki Kinoshita
- Department of Bioscience, School of Agriculture, Tokai University, 9-1-1 Toroku, Higashi-ku, Kumamoto-shi, Kumamoto, Japan
| | - Moe Hariu
- Department of Food Management, School of Food, Agricultural and Environmental Sciences, Miyagi University, 2-2-1 Hatatate, Taihaku-ku, Sendai-shi, Miyagi, Japan
| | - Yuki Nakashima
- Department of Bioscience, School of Agriculture, Tokai University, 9-1-1 Toroku, Higashi-ku, Kumamoto-shi, Kumamoto, Japan
| | - Kohei Watanabe
- Department of Bioscience, School of Agriculture, Tokai University, 9-1-1 Toroku, Higashi-ku, Kumamoto-shi, Kumamoto, Japan
| | - Shin Yasuda
- Department of Bioscience, School of Agriculture, Tokai University, 9-1-1 Toroku, Higashi-ku, Kumamoto-shi, Kumamoto, Japan
| | - Keiji Igoshi
- Department of Bioscience, School of Agriculture, Tokai University, 9-1-1 Toroku, Higashi-ku, Kumamoto-shi, Kumamoto, Japan
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Li B, Lu S. The Importance of Amine-degrading Enzymes on the Biogenic Amine Degradation in Fermented Foods: A review. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.09.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Mendes Ferreira A, Mendes-Faia A. The Role of Yeasts and Lactic Acid Bacteria on the Metabolism of Organic Acids during Winemaking. Foods 2020; 9:E1231. [PMID: 32899297 PMCID: PMC7555314 DOI: 10.3390/foods9091231] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 12/31/2022] Open
Abstract
The main role of acidity and pH is to confer microbial stability to wines. No less relevant, they also preserve the color and sensory properties of wines. Tartaric and malic acids are generally the most prominent acids in wines, while others such as succinic, citric, lactic, and pyruvic can exist in minor concentrations. Multiple reactions occur during winemaking and processing, resulting in changes in the concentration of these acids in wines. Two major groups of microorganisms are involved in such modifications: the wine yeasts, particularly strains of Saccharomyces cerevisiae, which carry out alcoholic fermentation; and lactic acid bacteria, which commonly conduct malolactic fermentation. This review examines various such modifications that occur in the pre-existing acids of grape berries and in others that result from this microbial activity as a means to elucidate the link between microbial diversity and wine composition.
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Affiliation(s)
- Ana Mendes Ferreira
- University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal;
- WM&B—Wine Microbiology & Biotechnology Laboratory, Department of Biology and Environment, UTAD, 5001-801 Vila Real, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisboa, 1749-016 Lisboa, Portugal
| | - Arlete Mendes-Faia
- University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal;
- WM&B—Wine Microbiology & Biotechnology Laboratory, Department of Biology and Environment, UTAD, 5001-801 Vila Real, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisboa, 1749-016 Lisboa, Portugal
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41
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Priyanka V, Ramesha A, Gayathri D, Vasudha M. Molecular characterization of non-biogenic amines producing Lactobacillus plantarum GP11 isolated from traditional pickles using HRESI-MS analysis. Journal of Food Science and Technology 2020; 58:2216-2226. [PMID: 33967318 DOI: 10.1007/s13197-020-04732-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/01/2020] [Accepted: 08/13/2020] [Indexed: 11/30/2022]
Abstract
Fungal spoilage and toxic biogenic amine production is a major risk in fermented products. Therefore, the selection of nontoxic biogenic amines producing probiotic bacteria plays a vital role in the fermentation process. In the present study, a total of 18 bacterial isolates were isolated from eight different homemade pickle samples and 15 lactic acid bacteria (LAB) were identified based on biochemical tests. Out of which only seven isolates (GP1, GP2, GP3, GP4, GP5, GP9, and GP11) exhibited antifungal activity against pickle contaminant Aspergillus sp and Penicillium sp. Among the potential LAB isolates, GP11 showed the highest antifungal activity against Aspergillus sp and Penicillium sp with a zone of inhibition 28.33 ± 0.57and 19.66 ± 0.57 mm respectively. The potent LAB isolates were tested for amino acid decarboxylase activity, in which GP2, GP3, GP4, and GP5 exhibited to produce tyramine, cadaverine, and phenylethylamine while GP1 and GP5 have produced tyramine and phenylethylamine respectively. However, highly potent antifungal active isolate GP11 did not produce biogenic amine. Further, GP1, GP9, and GP11 were subjected to confirmation of biogenic amines production using HRESI-MS. HRESI-MS analysis of the GP1 and GP9 sample confirmed the presence of phenylethylamine and tyramine respectively. Interestingly, GP11 isolate did not show any biogenic amines production and GP11 was further subjected to 16S rRNA typing and identified as Lactobacillus plantarum. On in situ pickle sensory evaluation, GP11 lactopickle was graded as very good quality when compared to traditional one. Therefore L. plantarum GP11 could be developed as an ideal starter culture for the fermented production of a pickle.
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Affiliation(s)
- V Priyanka
- Department of Microbiology, Davangere University, Davangere, 577002 India
| | - A Ramesha
- Department of Microbiology, Davangere University, Davangere, 577002 India
| | - Devaraja Gayathri
- Department of Microbiology, Davangere University, Davangere, 577002 India
| | - M Vasudha
- Department of Microbiology, Davangere University, Davangere, 577002 India
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42
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Chen C, Wang L, Yu H, Tian H. The local transcriptional regulators SacR1 and SacR2 act as repressors of fructooligosaccharides metabolism in Lactobacillus plantarum. Microb Cell Fact 2020; 19:161. [PMID: 32778113 PMCID: PMC7419226 DOI: 10.1186/s12934-020-01403-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 07/13/2020] [Indexed: 11/25/2022] Open
Abstract
Background In Lactobacillus plantarum, fructooligosaccharides (FOS) metabolism is controlled by both global and local regulatory mechanisms. Although catabolite control protein A has been identified as a global regulator of FOS metabolism, the functions of local regulators remain unclear. This study aimed to elucidate the roles of two local regulators, SacR1 and SacR2, in the regulation of FOS metabolism in L. plantarum both in vitro and in vivo. Results The inactivation of sacR1 and sacR2 affected the growth and production of metabolites for strains grown on FOS or glucose, respectively. A reverse transcription-quantitative PCR analysis of one wild-type and two mutant strains (ΔsacR1 and ΔsacR2) of L. plantarum identified SacR1 and SacR2 as repressors of genes relevant to FOS metabolism in the absence of FOS, and these genes could be induced or derepressed by the addition of FOS. The analysis predicted four potential transcription factor binding sites (TFBSs) in the putative promoter regions of two FOS-related clusters. The binding of SacR1 and SacR2 to these TFBSs both in vitro and in vivo was verified using electrophoretic mobility shift assays and chromatin immunoprecipitation, respectively. A consensus sequence of WNNNNNAACGNNTTNNNNNW was deduced for the TFBSs of SacR1 and SacR2. Conclusion Our results identified SacR1 and SacR2 as local repressors for FOS metabolism in L. plantarum. The regulation is achieved by the binding of SacR1 and SacR2 to TFBSs in the promoter regions of FOS-related clusters. The results provide new insights into the complex network regulating oligosaccharide metabolism by lactic acid bacteria. ![]()
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Affiliation(s)
- Chen Chen
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 201418, People's Republic of China
| | - Linlin Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 201418, People's Republic of China
| | - Haiyan Yu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 201418, People's Republic of China
| | - Huaixiang Tian
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 201418, People's Republic of China.
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Gao Y, Liu Y, Sun M, Zhang H, Mu G, Tuo Y. Physiological function analysis of Lactobacillus plantarum Y44 based on genotypic and phenotypic characteristics. J Dairy Sci 2020; 103:5916-5930. [PMID: 32418691 DOI: 10.3168/jds.2019-18047] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/05/2020] [Indexed: 12/14/2022]
Abstract
In our previous studies, Lactobacillus plantarum Y44 showed antioxidant activity and favorable gastric and intestinal transit tolerance. In the current study, we investigated the physiological function of L. plantarum Y44 based on an analysis of its genotype and phenotype. The complete genome of L. plantarum Y44 contained a single circular chromosome of 3,255,555 bp, with a GC content of 44.6%, and a single circular plasmid of 51,167 bp, with a GC content of 38.8%. The L. plantarum Y44 genome contained 3,293 genes including 3,112 protein coding sequences, 16 rRNAs, 66 tRNAs, 4 small (s)RNAs, and 95 pseudo genes. Lactobacillus plantarum Y44 could metabolize 24 different carbohydrate sources. Nineteen complete phosphoenolpyruvate-dependent sugar phosphotransferase system complex genes and intact Embden-Meyerhof-Parnas pathway and hexose monophosphate pathway enzyme genes, as well as abundant carbohydrate active enzyme genes, were identified in the L. plantarum Y44 genome. We also identified genes related to the biosynthesis of exopolysaccharide and surface proteins. Surface proteins played an important role in the L. plantarum Y44 adhesion to HT-29 cell monolayers, as evidenced by the removal of cell surface proteins leading to decreased adhesion capacity. The L. plantarum Y44 genome contained genes encoding chaperones, intracellular proteases, and 2-component systems, which were associated with the general stress response. Genes encoding bile salt hydrolase, F0F1-ATPase, Na+/H+-antiporter, H+/Cl- exchange transporter, cyclopropane-fatty acyl-phospholipid synthase, and alkaline shock protein were identified in the L. plantarum Y44 genome, which might explain the strain's favorable gastric and intestinal transit tolerance. Some genes associated with encoding the NADH system, glutathione system, and thioredoxin system were predicted via in silico analysis and might account for the strain's ability to scavenge reactive oxygen species. Lactobacillus plantarum Y44 was susceptive to 7 antibiotics and did not produce biogenic amines, likely due to the absence of acquired antibiotic resistance genes and amino acid decarboxylase genes. The phenotype profile of L. plantarum Y44 was associated with its genetic characteristics, indicating that strains with certain physiological functions can be screened by analyzing their phenotypic and genotypic characteristics. Lactobacillus plantarum Y44 has the potential to be used as a starter culture in fermented dairy products.
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Affiliation(s)
- Yuan Gao
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Dalian Probiotics Function Research Key Laboratory, Dalian Polytechnic University, Dalian 116034, China
| | - Yujun Liu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
| | - Mengying Sun
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Dalian Probiotics Function Research Key Laboratory, Dalian Polytechnic University, Dalian 116034, China
| | - Heping Zhang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Guangqing Mu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Dalian Probiotics Function Research Key Laboratory, Dalian Polytechnic University, Dalian 116034, China.
| | - Yanfeng Tuo
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; Dalian Probiotics Function Research Key Laboratory, Dalian Polytechnic University, Dalian 116034, China.
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Tufariello M, Capozzi V, Spano G, Cantele G, Venerito P, Mita G, Grieco F. Effect of Co-Inoculation of Candida zemplinina, Saccharomyces cerevisiae and Lactobacillus plantarum for the Industrial Production of Negroamaro Wine in Apulia (Southern Italy). Microorganisms 2020; 8:E726. [PMID: 32414096 PMCID: PMC7285497 DOI: 10.3390/microorganisms8050726] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/01/2020] [Accepted: 05/08/2020] [Indexed: 01/11/2023] Open
Abstract
The employment of multi-species starter cultures has growing importance in modern winemaking for improving the complexity and wine attributes. The assessment of compatibility for selected species/strains at the industrial-scale is crucial to assure the quality and the safety associated with fermentations. An aspect particularly relevant when the species belong to non-Saccharomyces, Saccharomyces spp. and malolactic bacteria, three categories with different biological characteristics and oenological significance. To the best of our knowledge, the present report is the first study regarding the utilization of a combined starter culture composed of three strains of non-Saccharomyces, Saccharomyces cerevisiae and Lactobacillus plantarum for production of wine at the industrial scale. More in-depth, this work investigated the oenological potential of the autochthonous characterized strains from the Apulian region (Southern Italy), Candida zemplinina (syn. Starmerella bacillaris) 35NC1, S. cerevisiae (NP103), and L. plantarum (LP44), in co-inoculation following a complete scale-up scheme. Microbial dynamics, fermentative profiles and production of volatile secondary compounds were assessed in lab-scale micro-vinification tests and then the performances of the mixed starter formulation were further evaluated by pilot-scale wine production. The above results were finally validated by performing an industrial-scale vinification on 100HL of Negroamaro cultivar grape must. The multi-starter formulation was able to rule the different stages of the fermentation processes effectively, and the different microbial combinations enhanced the organoleptic wine features to different extents. The findings indicated that the simultaneous inoculation of the three species affect the quality and quantity of several volatile compounds, confirming that the complexity of the wine can reflect the complexity of the starter cultures. Moreover, the results underlined that the same mixed culture could differently influence wine quality when tested at the lab-, pilot- and industrial-scale. Finally, we highlighted the significance of employment non-Saccharomyces and L. plantarum, together with S. cerevisiae, autochthonous strains in the design of custom-made starter culture formulation for typical regional wine production with pronounced unique quality.
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Affiliation(s)
- Maria Tufariello
- Institute of Sciences of Food Production, National Research Council, 73100 Lecce, Italy;
| | - Vittorio Capozzi
- Institute of Sciences of Food Production, National Research Council, c/o CS-DAT, Via Michele Protano, 71121 Foggia, Italy;
| | - Giuseppe Spano
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, 71121 Foggia, Italy;
| | | | - Pasquale Venerito
- Center for Research, Experimentation and Training in Agriculture “Basile Caramia”, 70010 Locorotondo, Italy;
| | - Giovanni Mita
- Institute of Sciences of Food Production, National Research Council, 73100 Lecce, Italy;
| | - Francesco Grieco
- Institute of Sciences of Food Production, National Research Council, 73100 Lecce, Italy;
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Lactobacillus plantarum, a New Biological Tool to Control Malolactic Fermentation: A Review and an Outlook. BEVERAGES 2020. [DOI: 10.3390/beverages6020023] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Malolactic fermentation (MLF) in wine is an important step in the vinification of most red and some white wines, as stands for the biological conversion of l-malic acid into l-lactic acid and carbon dioxide, resulting in a decrease in wine acidity. MLF not only results in a biological deacidification, it can exert a significant impact on the organoleptic qualities of wine. This paper reviews the biodiversity of lactic acid bacteria (LAB) in wine, their origin, and the limiting conditions encountered in wine, which allow only the most adapted species and strains to survive and induce malolactic fermentation. Of all the species of wine LAB, Oenococcus oeni is probably the best adapted to overcome the harsh environmental wine conditions and therefore represents the majority of commercial MLF starter cultures. Wine pH is most challenging, but, as a result of global warming, Lactobacillus sp. is more often reported to predominate and be responsible for spontaneous malolactic fermentation. Some Lactobacillus plantarum strains can tolerate the high alcohol and SO2 levels normally encountered in wine. This paper shows the potential within this species for the application as a starter culture for induction of MLF in juice or wine. Due to its complex metabolism, a range of compositional changes can be induced, which may positively affect the quality of the final product. An example of a recent isolate has shown most interesting results, not only for its capacity to induce MLF after direct inoculation, but also for its positive contribution to the wine quality. Degrading hexose sugars by the homo-fermentative pathway, which poses no risk of acetic acid production from the sugars, is an interesting alternative to control MLF in high pH wines. Within this species, we can expect more strains with interesting enological properties.
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Nardi T. Microbial Resources as a Tool for Enhancing Sustainability in Winemaking. Microorganisms 2020; 8:microorganisms8040507. [PMID: 32252445 PMCID: PMC7232173 DOI: 10.3390/microorganisms8040507] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/30/2020] [Accepted: 03/31/2020] [Indexed: 12/20/2022] Open
Abstract
In agriculture, the wine sector is one of the industries most affected by the sustainability issue. It is responsible for about 0.3% of annual global greenhouse gas emissions from anthropogenic activities. Sustainability in vitiviniculture was firstly linked to vineyard management, where the use of fertilizers, pesticides and heavy metals is a major concern. More recently, the contribution of winemaking, from grape harvest to bottling, has also been considered. Several cellar processes could be improved for reducing the environmental impact of the whole chain, including microbe-driven transformations. This paper reviews the potential of microorganisms and interactions thereof as a natural, environmentally friendly tool to improve the sustainability aspects of winemaking, all along the production chain. The main phases identified as potentially interesting for exploiting microbial activities to lower inputs are: (i) pre-fermentative stages, (ii) alcoholic fermentation, (iii) stage between alcoholic and malolactic fermentation, (iv) malolactic fermentation, (v) stabilization and spoilage risk management, and (vi) by-products and wastewater treatment. The presence of proper yeast or bacterial strains, the management and timing of inoculation of starter cultures, and some appropriate technological modifications that favor selected microbial activities can lead to several positive effects, including (among other) energy savings, reduction of chemical additives such as sulfites, and reuse of certain residues.
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Affiliation(s)
- Tiziana Nardi
- CREA-Council for Agricultural Research and Economics, Research Centre for Viticulture and Enology, Viale XXVIII Aprile 26, 31015 Conegliano, Italy
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Modifications of Phenolic Compounds, Biogenic Amines, and Volatile Compounds in Cabernet Gernishct Wine through Malolactic Fermentation by Lactobacillus plantarum and Oenococcus oeni. FERMENTATION-BASEL 2020. [DOI: 10.3390/fermentation6010015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Malolactic fermentation is a vital red wine-making process to enhance the sensory quality. The objective of this study is to elucidate the starter cultures’ role in modifying phenolic compounds, biogenic amines, and volatile compounds after red wine malolactic fermentation. We initiated the malolactic fermentation in Cabernet Gernishct wine by using two Oenococcus oeni and two Lactobacillus plantarum strains. Results showed that after malolactic fermentation, wines experienced a content decrease of total flavanols and total flavonols, accompanied by the accumulation of phenolic acids. The Lactobacillus plantarum strains, compared to Oenococcus oeni, exhibited a prevention against the accumulation of biogenic amines. The malolactic fermentation increased the total esters and modified the aromatic features compared to the unfermented wine. The Lactobacillus plantarum strains retained more aromas than the Oenococcus oeni strains did. Principal component analysis revealed that different strains could distinctly alter the wine characteristics being investigated in this study. These indicated that Lactobacillus plantarum could serve as a better alternative starter for conducting red wine malolactic fermentation.
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Luengo JM, Olivera ER. Catabolism of biogenic amines in Pseudomonas species. Environ Microbiol 2020; 22:1174-1192. [PMID: 31912965 DOI: 10.1111/1462-2920.14912] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/28/2019] [Accepted: 01/04/2020] [Indexed: 01/01/2023]
Abstract
Biogenic amines (BAs; 2-phenylethylamine, tyramine, dopamine, epinephrine, norepinephrine, octopamine, histamine, tryptamine, serotonin, agmatine, cadaverine, putrescine, spermidine, spermine and certain aliphatic amines) are widely distributed organic molecules that play basic physiological functions in animals, plants and microorganisms. Pseudomonas species can grow in media containing different BAs as carbon and energy sources, a reason why these bacteria are excellent models for studying such catabolic pathways. In this review, we analyse most of the routes used by different species of Pseudomonas (P. putida, P. aeruginosa, P. entomophila and P. fluorescens) to degrade BAs. Analysis of these pathways has led to the identification of a huge number of genes, catabolic enzymes, transport systems and regulators, as well as to understanding of their hierarchy and functional evolution. Knowledge of these pathways has allowed the design and collection of genetically manipulated microbes useful for eliminating BAs from different sources, highlighting the biotechnological applications of these studies.
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Affiliation(s)
- José M Luengo
- Departamento de Biología Molecular, Facultades de Veterinaria y de Biología, Universidad de León, 24007, León, Spain
| | - Elías R Olivera
- Departamento de Biología Molecular, Facultades de Veterinaria y de Biología, Universidad de León, 24007, León, Spain
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Cheng S, Xu Y, Lan X. Isolation, characterization, and application of biogenic amines‐degrading strains from fermented food. J Food Saf 2019. [DOI: 10.1111/jfs.12716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shumin Cheng
- College of Food Science and EngineeringOcean University of China Qingdao Shandong Province People's Republic of China
| | - Ying Xu
- College of Food Science and EngineeringOcean University of China Qingdao Shandong Province People's Republic of China
| | - Xiang Lan
- College of Food Science and EngineeringOcean University of China Qingdao Shandong Province People's Republic of China
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Exploration of the Microbial Biodiversity Associated with North Apulian Sourdoughs and the Effect of the Increasing Number of Inoculated Lactic Acid Bacteria Strains on the Biocontrol against Fungal Spoilage. FERMENTATION 2019. [DOI: 10.3390/fermentation5040097] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
In this study, we explored the diversity of yeasts and lactic acid bacteria (LAB) associated with six spontaneous sourdough fermentations from the northern part of the Apulian region (Italy). Bacterial and yeast isolates from sourdough were investigated by amplified ribosomal DNA restriction analysis (ARDRA) and restriction fragment length polymorphism (RFLP) analysis, respectively. The identification of the isolates was confirmed by sequencing bacterial 16S gene and yeast ITS1–5.8S–ITS2 rRNA gene amplicons. Microbiological analysis of all sourdough samples revealed that LAB and yeast counts ranged between 1.7 × 105 and 6.5 × 108 cfu/g, and 7.7 × 105 and 2.5 × 107 cfu/g, respectively. The molecular identification at species level revealed the occurrence of Lactobacillus plantarum as the dominant LAB and Saccharomyces cerevisiae as the dominant yeast species in all different sourdough samples. Then, the ability of all isolated strains to inhibit and/or reduce the growth of several selected fungi was valued through the overlay method. In light of their antifungal performances, ten LAB strains were inoculated, singularly and in combination, in subsequent bread-making trials. Overall, we confirmed the potential of LAB to extend the shelf life of bread through spoilage inhibition and, for the first time, we observed a synergistic effect due to the combination of several isolated LAB on the inhibition behavior against selected fungal spoilage strains. Our findings suggest the exploration of a LAB-based approach in order to extend the shelf life of bread, reducing, at the same time, the use of chemical agents for food preservation.
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