1
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Gökırmaklı Ç, Şatır G, Guzel‐Seydim ZB. Microbial viability and nutritional content of water kefir grains under different storage conditions. Food Sci Nutr 2024; 12:4143-4150. [PMID: 38873456 PMCID: PMC11167166 DOI: 10.1002/fsn3.4074] [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: 09/06/2023] [Revised: 02/18/2024] [Accepted: 02/24/2024] [Indexed: 06/15/2024] Open
Abstract
Water kefir grains are an important source of probiotics, mainly containing lactic acid bacteria and yeasts. The aim of this study is to investigate the changes in microbial and chemical properties of water kefir grains during 1-month storage at +4°C and -18°C. The initial content of lactobacilli, lactococci, and yeast in water kefir grains was 6.06, 6.33, and 5.93 log CFU/g, respectively. The number of lactobacilli, Lactobacillus acidophilus, and Bifidobacterium spp. in the water kefir grains were comparable, with slight changes at the end of refrigerated storage (p > .05). Lactococci and yeasts decreased significantly after both storage conditions compared to the initial content (p < .05). The dry matter and ash contents remained unchanged during storage (p > .05). Water kefir grains contained significant amounts of calcium, vitamin B2, vitamin B6, vitamin B7, and vitamin B12. Storage at both +4°C and -18°C did not affect the mineral and vitamin contents, except for Cu and Vitamin B2. The results indicate that the water kefir grains remained viable after storage at both temperatures. If water kefir grains need to be stored, it is recommended to store them at +4°C in sugared water as it ensures better survivability of the microbiota of the grains.
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Affiliation(s)
- Çağlar Gökırmaklı
- Department of Food EngineeringSuleyman Demirel UniversityIspartaTurkey
| | - Gülçin Şatır
- Department of Nutrition and DieteticsSuleyman Demirel UniversityIspartaTurkey
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2
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Wu M, Pakroo S, Nadai C, Molinelli Z, Speciale I, De Castro C, Tarrah A, Yang J, Giacomini A, Corich V. Genomic and functional evaluation of exopolysaccharide produced by Liquorilactobacillus mali t6-52: technological implications. Microb Cell Fact 2024; 23:158. [PMID: 38812023 PMCID: PMC11138040 DOI: 10.1186/s12934-024-02431-z] [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: 03/21/2024] [Accepted: 05/20/2024] [Indexed: 05/31/2024] Open
Abstract
BACKGROUND This study explores the biosynthesis, characteristics, and functional properties of exopolysaccharide produced by the strain Liquorilactobacillus mali T6-52. The strain demonstrated significant EPS production with a non-ropy phenotype. RESULTS The genomic analysis unveiled genes associated with EPS biosynthesis, shedding light on the mechanism behind EPS production. These genes suggest a robust EPS production mechanism, providing insights into the strain's adaptability and ecological niche. Chemical composition analysis identified the EPS as a homopolysaccharide primarily composed of glucose, confirming its dextran nature. Furthermore, it demonstrated notable functional properties, including antioxidant activity, fat absorption capacity, and emulsifying activity. Moreover, the EPS displayed promising cryoprotective activities, showing notable performance comparable to standard cryoprotective agents. The EPS concentration also demonstrated significant freeze-drying protective effects, presenting it as a potential alternative cryoprotectant for bacterial storage. CONCLUSIONS The functional properties of L. mali T6-52 EPS reveal promising opportunities across various industrial domains. The strain's safety profile, antioxidant prowess, and exceptional cryoprotective and freeze-drying characteristics position it as an asset in food processing and pharmaceuticals.
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Affiliation(s)
- Manyu Wu
- Department of Agronomy Food Natural Resources Animal and Environment (DAFNAE), University of Padova, Padova, Italy
| | - Shadi Pakroo
- Canadian Research Institute for Food Safety, Department of Food Science, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Chiara Nadai
- Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Conegliano, TV, Italy
| | - Zeno Molinelli
- Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Conegliano, TV, Italy
| | - Immacolata Speciale
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA, Italy
| | - Crisitina De Castro
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA, Italy
| | - Armin Tarrah
- Canadian Research Institute for Food Safety, Department of Food Science, University of Guelph, Guelph, ON, N1G 2W1, Canada.
| | - Jijin Yang
- Department of Chemical Sciences, University of Padova, Padova, Italy
| | - Alessio Giacomini
- Department of Agronomy Food Natural Resources Animal and Environment (DAFNAE), University of Padova, Padova, Italy
| | - Viviana Corich
- Department of Agronomy Food Natural Resources Animal and Environment (DAFNAE), University of Padova, Padova, Italy
- Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Conegliano, TV, Italy
- Department of Land, Environment, Agriculture and Forestry (TESAF), University of Padova, Padova, Italy
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3
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Güzel‐Seydim ZB, Şatır G, Gökırmaklı Ç. Use of mandarin and persimmon fruits in water kefir fermentation. Food Sci Nutr 2023; 11:5890-5897. [PMID: 37823165 PMCID: PMC10563690 DOI: 10.1002/fsn3.3561] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/26/2023] [Accepted: 07/03/2023] [Indexed: 10/13/2023] Open
Abstract
Water kefir is a non-dairy probiotic beverage. It is obtained by fermentation of water kefir grains with a sugar solution. This study aims to determine the properties of water kefir beverages obtained by fermentation of mandarin and persimmon-containing water for 42 h. According to microbiological results, both fruits containing water samples provided a high number of lactic acid bacteria and yeasts. Moreover, after fermentation, pH, Brix, and dry matter content did not significantly differ. On the other hand, fructose, maltose, and acetic acid contents of mandarin water kefir are significantly higher than persimmon water kefir (p < .05). Persimmon water kefir had higher total phenolic contents, twice as much as mandarin water kefir (p < .05). Both water kefirs had good color properties. The organoleptic acceptability of the fruit water kefirs was promising.
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Affiliation(s)
| | - Gülçin Şatır
- Department of Nutrition and DieteticsSüleyman Demirel UniversityIspartaTurkey
| | - Çağlar Gökırmaklı
- Department of Food EngineeringSüleyman Demirel UniversityIspartaTurkey
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4
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Pihurov M, Păcularu-Burada B, Cotârleț M, Grigore-Gurgu L, Borda D, Stănciuc N, Kluz M, Bahrim GE. Kombucha and Water Kefir Grains Microbiomes' Symbiotic Contribution to Postbiotics Enhancement. Foods 2023; 12:2581. [PMID: 37444320 DOI: 10.3390/foods12132581] [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: 06/12/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
Wild artisanal cultures, such as a symbiotic culture of bacteria and yeasts (SCOBY) and water kefir grains (WKG), represent a complex microorganism consortia that is composed of yeasts and lactic and acetic acid bacteria, with large strains of diversity and abundance. The fermented products (FPs) obtained by the microbiome's contribution can be included in functional products due to their meta-biotics (pre-, pro-, post-, and paraprobiotics) as a result of complex and synergistic associations as well as due to the metabolic functionality. In this study, consortia of both SCOBY and WKG were involved in the co-fermentation of a newly formulated substrate that was further analysed, aiming at increasing the postbiotic composition of the FPs. Plackett-Burman (PBD) and Response Surface Methodology (RSM) techniques were employed for the experimental designs to select and optimise several parameters that have an influence on the lyophilised starter cultures of SCOBY and WKG activity as a multiple inoculum. Tea concentration (1-3%), sugar concentration (5-10%), raisins concentration (3-6%), SCOBY lyophilised culture concentration (0.2-0.5%), WKG lyophilised culture concentration (0.2-0.5%), and fermentation time (5-7 days) were considered the independent variables for mathematical analysis and fermentation conditions' optimisation. Antimicrobial activity against Bacillus subtilis MIUG B1, Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, and Aspergillus niger MIUG M5, antioxidant capacity (DPPH), pH and the total acidity (TA) were evaluated as responses. The rich postbiotic bioactive composition of the FP obtained in optimised biotechnological conditions highlighted the usefulness of the artisanal co-cultures, through their symbiotic metabolic interactions for the improvement of bioactive potential.
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Affiliation(s)
- Marina Pihurov
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galați, Domnească Street No. 111, 800201 Galați, Romania
| | - Bogdan Păcularu-Burada
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galați, Domnească Street No. 111, 800201 Galați, Romania
| | - Mihaela Cotârleț
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galați, Domnească Street No. 111, 800201 Galați, Romania
| | - Leontina Grigore-Gurgu
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galați, Domnească Street No. 111, 800201 Galați, Romania
| | - Daniela Borda
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galați, Domnească Street No. 111, 800201 Galați, Romania
| | - Nicoleta Stănciuc
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galați, Domnească Street No. 111, 800201 Galați, Romania
| | - Maciej Kluz
- Department of Bioenergetics and Food Analysis and Microbiology, University of Rzeszow, 35601 Rzeszow, Poland
| | - Gabriela Elena Bahrim
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galați, Domnească Street No. 111, 800201 Galați, Romania
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Şafak H, Gün İ, Tudor Kalit M, Kalit S. Physico-Chemical, Microbiological and Sensory Properties of Water Kefir Drinks Produced from Demineralized Whey and Dimrit and Shiraz Grape Varieties. Foods 2023; 12:foods12091851. [PMID: 37174389 PMCID: PMC10177904 DOI: 10.3390/foods12091851] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/23/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
Water kefir grains cannot grow in milk. Therefore, the aim of this study was to investigate whether water kefir grains can show activity in demineralized whey, an environment containing lactose as a carbon source. The physicochemical, microbiological and sensory properties of water kefir prepared from demineralized whey containing 2% and 5% lactose and raisins or grape juice from two grape varieties (Dimrit and Shiraz) were investigated. It was found that the protein content of the water kefir increased significantly (p < 0.05), especially when grape juice was added. The total soluble solids and viscosity of the samples with grape addition increased significantly (p < 0.05). Total phenolic content and antioxidant capacity increased significantly with grape addition (p < 0.05), with the effect of Shiraz grape being more pronounced. In general, it was found that the content of K, P, Na, Ca and Mg was higher in the samples with grape addition. The sensory properties of water kefir made from dWhey with 2% lactose and grape juice were better. It was also confirmed that viability of water kefir microbiota is better in water kefir drink made from dWhey with 2% lactose due to higher pH value in comparison to dWhey with 5% lactose.
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Affiliation(s)
- Havva Şafak
- Health Sciences Institute, Department of Animal Products Hygiene and Technology, Burdur Mehmet Akif Ersoy University, 15100 Burdur, Türkiye
| | - İlhan Gün
- Food Processing Department, Burdur Vocational School of Food, Agriculture and Livestock, Burdur Mehmet Akif Ersoy University, 15100 Burdur, Türkiye
| | - Milna Tudor Kalit
- Department of Dairy Science, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Samir Kalit
- Department of Dairy Science, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
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Wilches‐López L, Correa‐Espinal A, Pérez‐Monterroza EJ, Rojas LF. Metataxonomic and metabolic evaluation of three water kefir microbiomes cultured in sugar cane juice. J FOOD PROCESS ENG 2023. [DOI: 10.1111/jfpe.14281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Lisett Wilches‐López
- Universidad de Antioquia Escuela de Microbiología, Grupo de Biotransformación Medellín Colombia
| | - Alexander Correa‐Espinal
- Departamento de Ingeniería de la Organización Facultad de Minas—Sede Medellín Universidad Nacional de Colombia Medellín Colombia
| | - Ezequiel José Pérez‐Monterroza
- Facultad de Ciencias Administrativas, Económicas y Contables Universidad Católica Luis Amigó, Programa de Gastronomía Medellín Colombia
| | - Luisa F. Rojas
- Universidad de Antioquia Escuela de Microbiología, Grupo de Biotransformación Medellín Colombia
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7
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Cufaoglu G, Erdinc AN. An alternative source of probiotics: Water kefir. FOOD FRONTIERS 2023. [DOI: 10.1002/fft2.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Gizem Cufaoglu
- Faculty of Veterinary Medicine Department of Food Hygiene and Technology Kirikkale University Kirikkale Turkey
| | - Ayse Nur Erdinc
- Faculty of Veterinary Medicine Department of Food Hygiene and Technology Kirikkale University Kirikkale Turkey
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8
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Spizzirri UG, Loizzo MR, Aiello F, Prencipe SA, Restuccia D. Non-dairy kefir beverages: formulation, composition, and main features. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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9
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Influence of Substrate on the Fermentation Characteristics and Culture-Dependent Microbial Composition of Water Kefir. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation9010028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Water kefir is a sparkling fermented beverage produced by fermenting water kefir grains in a sucrose solution containing dried fruits or fruit extracts. The objective of this study was to investigate the influence of substrate composition on the fermentation kinetics and culture-dependent microbial composition of water kefir. First, the impact of different fruit substrates and nitrogen limitation was examined. Fermentation of different fruit-based media with a single water kefir culture demonstrated that the substrate mainly influenced the type and ratio of the organic acids produced. These organic acid profiles could be linked to the culture-dependent microbial composition. In addition, the microbial composition and the associated dominant microorganisms observed were influenced by the water kefir fermentation conditions. Investigation of the effect of nitrogen limitation on the fermentation kinetics of several water kefir cultures showed that under such conditions, the fermentative capacity of the cultures declined. However, this decline was not immediate, and specific water kefir microorganisms may have enabled some cultures to maintain a higher fermentative capacity for longer. Thus, the water kefir fermentation kinetics and characteristics could be linked to the substrate composition, microorganisms present, and the process conditions under which the fermentations were performed.
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10
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Patel S, Tan J, Börner R, Zhang S, Priour S, Lima A, Ngom-Bru C, Cotter P, Duboux S. A temporal view of the water kefir microbiota and flavour attributes. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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11
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Laureys D, Leroy F, Vandamme P, De Vuyst L. Backslopping Time, Rinsing of the Grains During Backslopping, and Incubation Temperature Influence the Water Kefir Fermentation Process. Front Microbiol 2022; 13:871550. [PMID: 35602025 PMCID: PMC9120925 DOI: 10.3389/fmicb.2022.871550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/06/2022] [Indexed: 11/13/2022] Open
Abstract
For eight backslopping steps, eight series of water kefir fermentation processes differing in backslopping time and rinsing of the grains during each backslopping step and eight series of fermentation processes differing in incubation temperature and backslopping time were followed. Short backslopping times resulted in high relative abundances of Liquorilactobacillus nagelii and Saccharomyces cerevisiae, intermediate backslopping times in high relative abundances of Leuconostoc pseudomesenteroides, and long backslopping times in high relative abundances of Oenococcus sicerae and Dekkera bruxellensis. When the grains were rinsed during each backslopping step, the relative abundances of Lentilactobacillus hilgardii and Leuc. pseudomesenteroides increased and those of D. bruxellensis and Liql. nagelii decreased. Furthermore, rinsing of the grains during each backslopping step resulted in a slightly higher water kefir grain growth and lower metabolite concentrations. The relative abundances of Liquorilactobacillus mali were highest at 17°C, those of Leuc. pseudomesenteroides at 21 and 25°C, and those of Liql. nagelii at 29°C. With a kinetic modeling approach, the impact of the temperature and rinsing of the grains during the backslopping step on the volumetric production rates of the metabolites was determined.
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Affiliation(s)
- David Laureys
- Research Group of Industrial Microbiology and Food Biotechnology, Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Frédéric Leroy
- Research Group of Industrial Microbiology and Food Biotechnology, Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
- *Correspondence: Frédéric Leroy
| | - Peter Vandamme
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Luc De Vuyst
- Research Group of Industrial Microbiology and Food Biotechnology, Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
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12
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Fermented foods: an update on evidence-based health benefits and future perspectives. Food Res Int 2022; 156:111133. [DOI: 10.1016/j.foodres.2022.111133] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 12/15/2022]
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13
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Chan M, Liu D, Wu Y, Yang F, Howell K. Microorganisms in Whole Botanical Fermented Foods Survive Processing and Simulated Digestion to Affect Gut Microbiota Composition. Front Microbiol 2022; 12:759708. [PMID: 35035384 PMCID: PMC8757042 DOI: 10.3389/fmicb.2021.759708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/28/2021] [Indexed: 01/05/2023] Open
Abstract
Botanical fermented foods have been shown to improve human health, based on the activity of potentially beneficial lactic acid bacteria (LAB) and yeasts and their metabolic outputs. However, few studies have explored the effects of prolonged storage and functional spices on microbial viability of whole fermented foods from fermentation to digestion. Even fewer have assessed their impact on the gut microbiota. Our study investigated the effects of production processes on LAB and yeast microbial viability and gut microbiota composition. We achieved this by using physicochemical assessments and an in vitro gastrointestinal and a porcine gut microbiota model. In low-salt sauerkraut, we assessed the effects of salt concentration, starter cultures, and prolonged storage, and in tibicos, prolonged storage and the addition of spices cayenne, ginger, and turmeric. In both food matrices, LAB counts significantly increased (p<0.05), reaching a peak of 7–8 log cfu/g, declining to 6–6.5 log cfu/g by day 96. Yeast viability remained at 5–6 log cfu/g in tibicos. Ginger tibicos had significantly increased LAB and yeast viability during fermentation and storage (p<0.05). For maximum microbial consumption, tibicos should be consumed within 28days, and sauerkraut, 7weeks. Simulated upper GI digestion of both products resulted in high microbial survival rates of 70–80%. The 82% microbial survival rate of cayenne tibicos was significantly higher than other treatments (p<0.05). 16S rRNA sequencing of simulated porcine colonic microbiota showed that both spontaneously fermented sauerkraut and tibicos increase the relative abundance of Megasphaera 85-fold. These findings will inform researchers, producers, and consumers about the factors that affect the microbial content of fermented foods, and their potential effects on the gut.
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Affiliation(s)
- Miin Chan
- School of Agriculture and Food, The University of Melbourne, Parkville, VIC, Australia
| | - Di Liu
- School of Agriculture and Food, The University of Melbourne, Parkville, VIC, Australia
| | - Yingying Wu
- School of Agriculture and Food, The University of Melbourne, Parkville, VIC, Australia
| | - Fan Yang
- School of Agriculture and Food, The University of Melbourne, Parkville, VIC, Australia
| | - Kate Howell
- School of Agriculture and Food, The University of Melbourne, Parkville, VIC, Australia
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Pendón MD, Bengoa AA, Iraporda C, Medrano M, Garrote GL, Abraham AG. Water kefir: Factors affecting grain growth and health-promoting properties of the fermented beverage. J Appl Microbiol 2021; 133:162-180. [PMID: 34822204 DOI: 10.1111/jam.15385] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 10/18/2021] [Accepted: 11/22/2021] [Indexed: 01/07/2023]
Abstract
Nowadays, the interest in the consumption of healthy foods has increased as well as the homemade preparation of artisanal fermented product. Water kefir is an ancient drink of uncertain origin, which has been passed down from generation to generation and is currently consumed practically all over the world. Considering the recent and extensive updates published on sugary kefir, this work aims to shed light on the scientific works that have been published so far in relation to this complex ecosystem. We focused our review evaluating the factors that affect the beverage microbial and chemical composition that are responsible for the health attribute of water kefir as well as the grain growth. The microbial ecosystem that constitutes the grains and the fermented consumed beverage can vary according to the fermentation conditions (time and temperature) and especially with the use of different substrates (source of sugars, additives as fruits and molasses). In this sense, the populations of microorganisms in the beverage as well as the metabolites that they produce varies and in consequence their health properties. Otherwise, the knowledge of the variables affecting grain growth are also discussed for its relevance in maintenance of the starter biomass as well as the use of dextran for technological application.
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Affiliation(s)
- María Dolores Pendón
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA, UNLP-CIC-CONICET), La Plata, Argentina
| | - Ana Agustina Bengoa
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA, UNLP-CIC-CONICET), La Plata, Argentina
| | - Carolina Iraporda
- Departamento de Ingeniería Química y Tecnología de los Alimentos, Facultad de Ingeniería, UNCPBA, Olavarría, Argentina
| | - Micaela Medrano
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA, UNLP-CIC-CONICET), La Plata, Argentina
| | - Graciela L Garrote
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA, UNLP-CIC-CONICET), La Plata, Argentina
| | - Analía G Abraham
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA, UNLP-CIC-CONICET), La Plata, Argentina.,Área Bioquímica y Control de Alimentos, Facultad de Ciencias Exactas, UNLP, La Plata, Argentina
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15
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Pihurov M, Păcularu-Burada B, Cotârleţ M, Vasile MA, Bahrim GE. Novel Insights for Metabiotics Production by Using Artisanal Probiotic Cultures. Microorganisms 2021; 9:2184. [PMID: 34835310 PMCID: PMC8624174 DOI: 10.3390/microorganisms9112184] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/16/2021] [Accepted: 10/16/2021] [Indexed: 01/15/2023] Open
Abstract
Wild probiotic consortia of microorganisms (bacteria and yeasts) associated in the artisanal cultures' microbiota (milk kefir grains, water kefir grains and kombucha) are considered valuable promoters for metabiotics (prebiotics, probiotics, postbiotics and paraprobiotics) production. The beneficial effects of the fermented products obtained with the artisanal cultures on human well-being are described by centuries and the interest for them is continuously increasing. The wild origin and microbial diversity of these above-mentioned consortia give them extraordinary protection capacity against microbiological contaminants in unusual physico-chemical conditions and unique fermentative behaviour. This review summarizes the state of the art for the wild artisanal cultures (milk and water kefir grains, respectively, kombucha-SCOBY), their symbiotic functionality, and the ability to ferment unconventional substrates in order to obtain valuable bioactive compounds with in vitro and in vivo beneficial functional properties. Due to the necessity of the bioactives production and their use as metabiotics in the modern consumer's life, artisanal cultures are the perfect sources able to biosynthesize complex functional metabolites (bioactive peptides, antimicrobials, polysaccharides, enzymes, vitamins, cell wall components). Depending on the purposes of the biotechnological fermentation processes, artisanal cultures can be used as starters on different substrates. Current studies show that the microbial synergy between bacteria-yeast and/or bacteria-offers new perspectives to develop functional products (food, feeds, and ingredients) with a great impact on life quality.
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Affiliation(s)
| | | | | | | | - Gabriela Elena Bahrim
- Faculty of Food Science and Engineering, Dunarea de Jos University of Galati, Domneasca Street No. 111, 800201 Galati, Romania; (M.P.); (B.P.-B.); (M.C.); (M.A.V.)
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16
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Lynch KM, Wilkinson S, Daenen L, Arendt EK. An update on water kefir: Microbiology, composition and production. Int J Food Microbiol 2021; 345:109128. [PMID: 33751986 DOI: 10.1016/j.ijfoodmicro.2021.109128] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 01/31/2021] [Accepted: 02/23/2021] [Indexed: 11/15/2022]
Abstract
Water kefir is a sparkling, slightly acidic fermented beverage produced by fermenting a solution of sucrose, to which dried fruits have been added, with water kefir grains. These gelatinous grains are a symbiotic culture of bacteria and yeast embedded in a polysaccharide matrix. Lactic acid bacteria, yeast and acetic acid bacteria are the primary microbial members of the sugary kefir grain. Amongst other contributions, species of lactic acid bacteria produce the exopolysaccharide matrix from which the kefir grain is formed, while yeast assists the bacteria by a nitrogen source that can be assimilated. Exactly which species predominate within the grain microbiota, however, appears to be dependent on the geographical origin of the grains and the fermentation substrate and conditions. These factors ultimately affect the characteristics of the beverage produced in terms of aroma, flavour, and acidity, for example, but can also be controlled and exploited in the production of a beverage of desired characteristics. The production of water kefir has traditionally occurred on a small scale and the use of defined starter cultures is not commonly practiced. However, as water kefir increases in popularity as a beverage - in part because of consumer lifestyle trends and in part due to water kefir being viewed as a health drink with its purported health benefits - the need for a thorough understanding of the biology and dynamics of water kefir, and for defined and controlled production processes, will ultimately increase. The aim of this review is to provide an update into the current knowledge of water kefir.
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Affiliation(s)
- Kieran M Lynch
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Stuart Wilkinson
- Global Innovation & Technology Centre, Anheuser-Busch InBev nv/sa, Brouwerijplein 1, 3000 Leuven, Belgium
| | - Luk Daenen
- Global Innovation & Technology Centre, Anheuser-Busch InBev nv/sa, Brouwerijplein 1, 3000 Leuven, Belgium
| | - Elke K Arendt
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland; APC Microbiome Ireland, University College Cork, Cork, Ireland.
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Laureys D, Leroy F, Hauffman T, Raes M, Aerts M, Vandamme P, De Vuyst L. The Type and Concentration of Inoculum and Substrate as Well as the Presence of Oxygen Impact the Water Kefir Fermentation Process. Front Microbiol 2021; 12:628599. [PMID: 33643256 PMCID: PMC7904701 DOI: 10.3389/fmicb.2021.628599] [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: 11/12/2020] [Accepted: 01/18/2021] [Indexed: 11/13/2022] Open
Abstract
Eleven series of water kefir fermentation processes differing in the presence of oxygen and the type and concentration of inoculum and substrate, were followed as a function of time to quantify the impact of these parameters on the kinetics of this process via a modeling approach. Increasing concentrations of the water kefir grain inoculum increased the water kefir fermentation rate, so that the metabolic activity during water kefir fermentation was mainly associated with the grains. Water kefir liquor could also be used as an alternative means of inoculation, but the resulting fermentation process progressed slower than the one inoculated with water kefir grains, and the production of water kefir grain mass was absent. Substitution of sucrose with glucose and/or fructose reduced the water kefir grain growth, whereby glucose was fermented faster than fructose. Lacticaseibacillus paracasei (formerly known as Lactobacillus paracasei), Lentilactobacillus hilgardii (formerly known as Lactobacillus hilgardii), Liquorilactobacillus nagelii (formerly known as Lactobacillus nagelii), Saccharomyces cerevisiae, and Dekkera bruxellensis were the main microorganisms present. Acetic acid bacteria were present in low abundances under anaerobic conditions and only proliferated under aerobic conditions. Visualization of the water kefir grains through scanning electron microscopy revealed that the majority of the microorganisms was attached onto their surface. Lactic acid bacteria and yeasts were predominantly associated with the grains, whereas acetic acid bacteria were predominantly associated with the liquor.
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Affiliation(s)
- David Laureys
- Research Group of Industrial Microbiology and Food Biotechnology, Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Frédéric Leroy
- Research Group of Industrial Microbiology and Food Biotechnology, Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Tom Hauffman
- Research Group of Electrochemical and Surface Engineering, Faculty of Engineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Marc Raes
- Research Group of Electrochemical and Surface Engineering, Faculty of Engineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Maarten Aerts
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Peter Vandamme
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Luc De Vuyst
- Research Group of Industrial Microbiology and Food Biotechnology, Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
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18
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Comasio A, Van Kerrebroeck S, Harth H, Verté F, De Vuyst L. Potential of Bacteria from Alternative Fermented Foods as Starter Cultures for the Production of Wheat Sourdoughs. Microorganisms 2020; 8:E1534. [PMID: 33036188 PMCID: PMC7599913 DOI: 10.3390/microorganisms8101534] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/03/2020] [Accepted: 10/05/2020] [Indexed: 01/31/2023] Open
Abstract
Microbial strains for starter culture-initiated sourdough productions are commonly isolated from a fermenting flour-water mixture. Yet, starter culture strains isolated from matrices other than sourdoughs could provide the dough with interesting metabolic properties and hence change the organoleptic properties of the concomitant breads. Furthermore, the selection of sourdough starter cultures does not need to be limited to lactic acid bacteria (LAB), as other food-grade microorganisms are sometimes found in sourdoughs. Therefore, different strains belonging to LAB, acetic acid bacteria (AAB), and coagulase-negative staphylococci (CNS) that originated from different fermented food matrices (fermenting cocoa pulp-bean mass, fermented sausage, and water kefir), were examined as to their prevalence in a wheat sourdough ecosystem during 72-h fermentations. Limosilactobacillus fermentum IMDO 222 (fermented cocoa pulp-bean mass isolate) and Latilactobacillus sakei CTC 494 (fermented sausage isolate) seemed to be promising candidates as sourdough starter culture strains, as were the AAB strains Acetobacter pasteurianus IMDO 386B and Gluconobacter oxydans IMDO A845 (both isolated from fermented cocoa pulp-bean mass), due to their competitiveness in the wheat flour-water mixtures. Wheat breads made with G. oxydans IMDO A845 sourdoughs were significantly darker than reference wheat breads.
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Affiliation(s)
- Andrea Comasio
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium; (A.C.); (S.V.K.); (H.H.)
| | - Simon Van Kerrebroeck
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium; (A.C.); (S.V.K.); (H.H.)
| | - Henning Harth
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium; (A.C.); (S.V.K.); (H.H.)
| | - Fabienne Verté
- Puratos NV, Industrialaan 25, 1702 Groot-Bijgaarden, Belgium;
| | - Luc De Vuyst
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium; (A.C.); (S.V.K.); (H.H.)
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