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Akarca G, Kilinç M, Denizkara AJ. Quality specification of ice creams produced with different homofermentative lactic acid bacteria. Food Sci Nutr 2024; 12:192-203. [PMID: 38268905 PMCID: PMC10804104 DOI: 10.1002/fsn3.3762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 09/20/2023] [Accepted: 09/27/2023] [Indexed: 01/26/2024] Open
Abstract
This study investigated the changes in the physicochemical, microbiological, textural, and nutritional values of ice cream produced by various methods with the addition of different lactic acid bacteria. Adding lactic acid bacteria to the ice cream mix caused a decrease in firmness, consistency, cohesiveness, index of viscosity, pH, aw, first drop, complete melting, and overrun values (p < .05). These decreases were more pronounced in the samples to which lactic acid bacteria were added before mix maturation (p < .05). Firmness and consistency values varied between 15.11-16.26 (g) and 374.58-404.91 (g s), respectively, in the samples to which lactic acid bacteria were added before maturation. No significant effect of the addition of lactic acid bacteria to the ice cream mix on the L*, a*, and b* values of the bacteria before or after mix maturation was detected (p > .05). The L* values of the samples varied between 88.91 and 83.36, a* values between 0.76 and 1.32, and b* values between 6.57 and 8.38. An increase was detected in the amount of organic acid (excluding formic acid) in the samples produced with the addition of different lactic acid bacteria (p < .05). The number of fatty acids in the samples varied depending on the lactic acid addition and the production method; the rate of this change was generally higher in the samples with added lactic acid bacteria after mix maturation (p < .05). In particular, the amounts of short- and medium-chain fatty acids increased in the samples with lactic acid bacteria added after mix ripening, compared to the control sample.
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Affiliation(s)
- Gökhan Akarca
- Department of Food Engineering, Faculty of EngineeringAfyon Kocatepe UniversityAfyonkarahisarTurkey
| | - Mehmet Kilinç
- Department of Food Engineering, Faculty of EngineeringAfyon Kocatepe UniversityAfyonkarahisarTurkey
| | - Ayşe Janseli Denizkara
- Department of Food Engineering, Faculty of EngineeringAfyon Kocatepe UniversityAfyonkarahisarTurkey
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2
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Gül LB, Bekbay S, Akgün A, Gül O. Effect of oleaster ( Elaeagnus angustifolia L.) flour addition combined with high-pressure homogenization on the acidification kinetics, physicochemical, functional, and rheological properties of kefir. Food Sci Nutr 2023; 11:5325-5337. [PMID: 37701222 PMCID: PMC10494617 DOI: 10.1002/fsn3.3491] [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: 04/09/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 09/14/2023] Open
Abstract
In this study, the effects of peeled oleaster flour (OF) addition (0.5% and 1%) with high-pressure homogenization (HPH) at 100 MPa on acidification kinetics, physicochemical, functional, and rheological properties of kefir made from bovine whole milk were investigated. The fermentation kinetic parameters such as Vmax and T f decreased by 23.63% and 20%, respectively, with 1% OF and application of HPH. The combined use of two treatments had a positive effect on Lactobacillus and Lactococcus counts, reaching a maximum of 9.63 and 9.31 log cfu/mL, respectively. Also, total phenolic contents and antioxidant activity reached maximum values of 85.31 mg GAE/g and 17.22%, respectively. The ΔE value was more limited with HPH. The maximum firmness and water-holding capacity values were determined in the sample produced with 1% OF and application of HPH. Rheological analysis revealed that all kefirs exhibited shear thinning behavior, and the Ostwald-de-Waele (R 2 > .99) model was suitable to describe the rheological behavior of all kefir samples. The highest viscosity (0.049 Pa.s, at 50/s shear rate) and consistency index (1.115 Pa.sn) were observed in kefir with 1% OF and application of HPH. Kefir samples were characterized as weak gel behavior because storage modulus (G') was much greater than loss modulus (G") and the power-law model was used to characterize the viscoelasticity. The overall quality assessment indicated that the improvement of the fermentation process and the enhancement of textural and functional properties of kefir samples could be achieved with the addition of 1% OF and application of HPH.
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Affiliation(s)
- Latife Betül Gül
- Department of Food EngineeringFaculty of EngineeringGiresun UniversityGiresunTurkey
| | - Saya Bekbay
- Department of Food Technology and Processing ProductsTechnical FacultySaken Seifullin Kazakh AgroTechnical Research UniversityNur‐Sultan (Astana)Kazakhstan
| | - Abdullah Akgün
- Department of Food EngineeringFaculty of EngineeringTrakya UniversityEdirneTurkey
| | - Osman Gül
- Department of Food EngineeringFaculty of Engineering and ArchitectureKastamonu UniversityKastamonuTurkey
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3
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Aktaş H, Meral Aktaş H, Ürkek B, Şengül M, Çetin B. Evaluation of Spreadable Kefir Produced from Different Milks in Terms of Some Quality Criteria. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10129-8. [PMID: 37523112 DOI: 10.1007/s12602-023-10129-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2023] [Indexed: 08/01/2023]
Abstract
Kefir, which has many beneficial effects on health, is one of the most consumed fermented milk products worldwide. It is important to increase consumption of the fermented product for public health. In this study, it was aimed to increase the beneficial effects of kefir on public health. Therefore, kefirs produced from different types of milk (cow, buffalo, sheep, and goat) were concentrated, and obtained spreadable kefir samples were investigated in terms of their microbiological characteristic (lactic bacilli, lactic cocci, yeasts and moulds, total bacteria, and coliform bacteria), benzoic acid content, physicochemical properties (fat, total solid, ash content, acidity, pH, syneresis, viscosity, colour, and rheological properties), and sensory characteristic. It was determined that APC, lactic bacilli, lactic cocci, and yeast counts of the concentrated kefir samples changed between 6.90 and 8.64, 6.89 and 8.61, 7.42 and 8.72, and 2.17 and 5.39 log CFU/g, respectively, during storage. Mould and coliform bacteria were not detected in the samples. The concentrated kefir samples contained benzoic acid in the range of 18.30-119.58 mg/L. Results from this study showed that type of milk caused differences on APC, lactic bacilli, lactic cocci and yeast count, total solids, ash, fat, acidity, pH, syneresis, colour, viscosity and rheological parameters, and benzoic acid content. In addition, milk type affected sensory properties of the kefirs. Concentrated kefirs produced from cow and buffalo milk were the most liked by panellists. Finally, it was determined that concentrated kefir was favoured as a new product by most of the panellists.
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Affiliation(s)
- Haktan Aktaş
- Faculty of Agriculture, Department of Food Engineering, Ataturk University, Erzurum, 25240, Turkey
| | - Hacer Meral Aktaş
- Faculty of Agriculture, Department of Food Engineering, Ataturk University, Erzurum, 25240, Turkey
| | - Bayram Ürkek
- Siran Mustafa Beyaz Vocational School, Gumushane University, Siran, Gumushane, 25700, Turkey.
| | - Mustafa Şengül
- Faculty of Agriculture, Department of Food Engineering, Ataturk University, Erzurum, 25240, Turkey
| | - Bülent Çetin
- Faculty of Agriculture, Department of Food Engineering, Ataturk University, Erzurum, 25240, Turkey
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4
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Chong AQ, Lau SW, Chin NL, Talib RA, Basha RK. Fermented Beverage Benefits: A Comprehensive Review and Comparison of Kombucha and Kefir Microbiome. Microorganisms 2023; 11:1344. [PMID: 37317318 DOI: 10.3390/microorganisms11051344] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 06/16/2023] Open
Abstract
Beverage fermentation is an ancient ritual that has been practised for millennia. It was slowly disappearing from households and communities due to the advancement of manufacturing technology and the marketing of soft drinks until the recent revival of the beverage fermentation culture due to an increase in the demand for health drinks amid the COVID-19 pandemic. Kombucha and kefir are two well-known fermented beverages that are renowned for their myriad of health benefits. The starter materials for making these beverages contain micro-organisms that act like microscopic factories producing beneficial nutrients that have antimicrobial and anticancer effects. The materials modulate the gut microbiota and promote positive effects on the gastrointestinal tract. Due to wide variations in the substrates and types of micro-organisms involved in the production of both kombucha and kefir, this paper compiles a compendium of the micro-organisms present and highlights their nutritional roles.
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Affiliation(s)
- Ann Qi Chong
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia
| | - Siew Wen Lau
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia
| | - Nyuk Ling Chin
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia
| | - Rosnita A Talib
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia
| | - Roseliza Kadir Basha
- Department of Process and Food Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia
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Biadała A, Szablewski T, Cegielska-Radziejewska R, Lasik-Kurdyś M, Adzahan NM. The Evaluation of Activity of Selected Lactic Acid Bacteria for Bioconversion of Milk and Whey from Goat Milk to Release Biomolecules with Antibacterial Activity. Molecules 2023; 28:molecules28093696. [PMID: 37175106 PMCID: PMC10180251 DOI: 10.3390/molecules28093696] [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: 04/21/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
The aim of the study was to assess the antibacterial features of functional macromolecules released during the fermentation of goat milk and whey from goat milk by selected lactic acid bacteria strains that are components of kefir grain microflora. Two milk sources were used: goat milk and whey from goat milk. The lactic acid bacteria (LAB) and indicator microorganisms used were Lactobacillus plantarum PCM 1386, Lactobacillus fermentum PCM 491, Lactobacillus rhamnosus PCM 2677, Lactobacillus acidophilus PCM 2499, Escherichia coli PCM 2793, Salmonella enteritidis PCM 2548, Micrococcus luteus PCM 525, and Proteus mirabilis PCM 1361. The metabolic activity of LAB was described by the Gompertz model, and the parameters proposed for this experiment were the maximum rate of change of electrical impedance and potential biodegradability. Antibacterial activity was examined using the culture method in a liquid medium, determination of the reduction in indicator microorganisms, and optical density changes. Results show that the selective LAB produced certain active biomolecules with antibacterial activity from whey, a by-product that is sometimes troublesome for goat milk processors to manage. Lactobacillus acidophilus is a microorganism that is characterized by the highest metabolic activity in goat milk and whey from goat milk. It has the possibility to produce macromolecules with antibacterial activity.
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Affiliation(s)
- Agata Biadała
- Department of Food Quality and Safety Management, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, Poland
| | - Tomasz Szablewski
- Department of Food Quality and Safety Management, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, Poland
| | - Renata Cegielska-Radziejewska
- Department of Food Quality and Safety Management, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, Poland
| | - Małgorzata Lasik-Kurdyś
- Department of Food Technology of Plant Origin, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, Poland
| | - Noranizan Mohd Adzahan
- Department of Food Technology, Faculty of Food Science and Technology, University Putra Malaysia (UPM), Serdang 43400, Selangor Darul Ehsan, Malaysia
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Gorla G, Fumagalli S, Jansen JJ, Giussani B. Acquisition strategies for fermentation processes with a low-cost miniaturized NIR-spectrometer from scratch: Issues and challenges. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Uruc K, Tekin A, Sahingil D, Hayaloglu A. An alternative plant-based fermented milk with kefir culture using apricot (Prunus armeniaca L.) seed extract: Changes in texture, volatiles and bioactivity during storage. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Colorimetric detection of acid-base in organic solvents, water, and food products using polydiacetylene/Zn2+/ZnO nanocomposites with tunable sensitivity. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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9
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Rutkowska J, Antoniewska-Krzeska A, Żbikowska A, Cazón P, Vázquez M. Volatile Composition and Sensory Profile of Lactose-Free Kefir, and Its Acceptability by Elderly Consumers. Molecules 2022; 27:molecules27175386. [PMID: 36080153 PMCID: PMC9457958 DOI: 10.3390/molecules27175386] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/18/2022] [Accepted: 08/23/2022] [Indexed: 12/05/2022] Open
Abstract
Lactose-free products are crucial in the diet of lactose-intolerant elderly consumers, one of them being kefir due to its unique chemical composition and diversity of valuable microflora. The study aimed at determining the volatile compound profile and the corresponding sensory attributes of lactose-free kefir (LFK) as compared with the traditional one (TK). The perception of main sensory attributes and hedonic acceptability of LFK by elderly were also studied. The LFK contained two times more ketones, especially 3-hydroxy-2-butanone and 2,3-butanedione, that probably contributed to the high intensity of creamy aroma. A substantial share of acetic acid in LFK was not associated with high intensity of sour aroma, probably being masked by the creamy aroma, perceived as dominating. LFK was sensed as sweeter and more milky than the traditional one. The intense sweet taste of LFK was due to higher amounts of glucose and galactose than in TK, and was perceived as “just about right” by 63% of elderly subjects in the just-about-right (JAR) scale. The lower acidity of LFK than that of TK, assayed both instrumentally and by sensory assessment, was highly appreciated by 73% of elderly subjects as “just about right” in JAR scale. These two taste attributes dominated in liking the lactose-free kefir by elderly subjects.
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Affiliation(s)
- Jaroslawa Rutkowska
- Institute of Human Nutrition Sciences, Faculty of Human Nutrition, Warsaw University of Life Sciences, Nowoursynowska st.159c, 02-776 Warsaw, Poland
- Correspondence:
| | - Agata Antoniewska-Krzeska
- Institute of Human Nutrition Sciences, Faculty of Human Nutrition, Warsaw University of Life Sciences, Nowoursynowska st.159c, 02-776 Warsaw, Poland
| | - Anna Żbikowska
- Institute of Food Sciences, Department of Food Technology and Assessment, Division of Fat and Oils and Food Concentrates Technology, Warsaw University of Life Sciences (WULS-SGGW), Nowoursynowska st.159c, 02-776 Warsaw, Poland
| | - Patricia Cazón
- Department of Analytical Chemistry, Faculty of Veterinary, University of Santiago de Compostela, 27002 Lugo, Spain
| | - Manuel Vázquez
- Department of Analytical Chemistry, Faculty of Veterinary, University of Santiago de Compostela, 27002 Lugo, Spain
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Garavand F, Daly DF, Gómez-Mascaraque LG. The consequence of supplementing with synbiotic systems on free amino acids, free fatty acids, organic acids, and some stability indexes of fermented milk. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Üçok G, Kara Ü, Sert D. Physical, mechanical and thermal properties of gelatine based edible film made using kefir: Monitoring
Aspergillus flavus
and
A. parasiticus
growth on the film surface. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gamze Üçok
- Faculty of Engineering, Department of Food Engineering Necmettin Erbakan University Konya Turkey
| | - Ümmügülsüm Kara
- Faculty of Engineering, Department of Food Engineering Necmettin Erbakan University Konya Turkey
| | - Durmuş Sert
- Faculty of Engineering, Department of Food Engineering Necmettin Erbakan University Konya Turkey
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12
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Yilmaz B, Sharma H, Melekoglu E, Ozogul F. Recent developments in dairy kefir-derived lactic acid bacteria and their health benefits. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101592] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Volatilomics-Based Microbiome Evaluation of Fermented Dairy by Prototypic Headspace-Gas Chromatography–High-Temperature Ion Mobility Spectrometry (HS-GC-HTIMS) and Non-Negative Matrix Factorization (NNMF). Metabolites 2022; 12:metabo12040299. [PMID: 35448485 PMCID: PMC9025153 DOI: 10.3390/metabo12040299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 12/10/2022] Open
Abstract
Fermented foods, such as yogurt and kefir, contain a versatile spectrum of volatile organic compounds (VOCs), including ethanol, acetic acid, ethyl acetate, and diacetyl. To overcome the challenge of overlapping peaks regarding these key compounds, the drift tube temperature was raised in a prototypic high-temperature ion mobility spectrometer (HTIMS). This HS-GC-HTIMS was used for the volatilomic profiling of 33 traditional kefir, 13 commercial kefir, and 15 commercial yogurt samples. Pattern recognition techniques, including principal component analysis (PCA) and NNMF, in combination with non-targeted screening, revealed distinct differences between traditional and commercial kefir while showing strong similarities between commercial kefir and yogurt. Classification of fermented dairy samples into commercial yogurt, commercial kefir, traditional mild kefir, and traditional tangy kefir was also possible for both PCA- and NNMF-based models, obtaining cross-validation (CV) error rates of 0% for PCA-LDA, PCA-kNN (k = 5), and NNMF-kNN (k = 5) and 3.3% for PCA-SVM and NNMF-LDA. Through back projection of NNMF loadings, characteristic substances were identified, indicating a mild flavor composition of commercial samples, with high concentrations of buttery-flavored diacetyl. In contrast, traditional kefir showed a diverse VOC profile with high amounts of flavorful alcohols (including ethanol and methyl-1-butanol), esters (including ethyl acetate and 3-methylbutyl acetate), and aldehydes. For validation of the results and deeper understanding, qPCR sequencing was used to evaluate the microbial consortia, confirming the microbial associations between commercial kefir and commercial yogurt and reinforcing the differences between traditional and commercial kefir. The diverse flavor profile of traditional kefir primarily results from the yeast consortium, while commercial kefir and yogurt is primarily, but not exclusively, produced through bacterial fermentation. The flavor profile of fermented dairy products may be used to directly evaluate the microbial consortium using HS-GC-HTIMS analysis.
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14
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Ibacache-Quiroga C, González-Pizarro K, Charifeh M, Canales C, Díaz-Viciedo R, Schmachtenberg O, Dinamarca MA. Metagenomic and Functional Characterization of Two Chilean Kefir Beverages Reveals a Dairy Beverage Containing Active Enzymes, Short-Chain Fatty Acids, Microbial β-Amyloids, and Bio-Film Inhibitors. Foods 2022; 11:foods11070900. [PMID: 35406987 PMCID: PMC8997647 DOI: 10.3390/foods11070900] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 02/05/2023] Open
Abstract
Kefir beverage is a probiotic food associated with health benefits, containing probiotic microorganisms and biomolecules produced during fermentation. The microbial composition of these beverages varies among countries, geographical regions, and the substrates, therefore, the characterization of kefir beverages is of great relevance in understanding their potential health-promoting and biotechnological applications. Therefore, this study presents the metagenomic and functional characterization of two Chilean kefir beverages, K02 and K03, through shotgun and amplicon-based metagenomic, microbiological, chemical, and biochemical studies. Results show that both beverages’ microbiota were mainly formed by Bacteria (>98%), while Eukarya represented less than 2%. Regarding Bacteria, the most abundant genera were Acetobacter (93.43% in K02 and 80.99% in K03) and Lactobacillus (5.72% in K02 and 16.75% in K03), while Kazachstania was the most abundant genus from Eukarya (42.55% and 36.08% in K02 and K03). Metagenomic analyses revealed metabolic pathways for lactose and casein assimilation, biosynthesis of health-promoting biomolecules, and clusters for antibiotic resistance, quorum sensing communication, and biofilm formation. Enzymatic activities, microbial β-amyloids, and short-chain fatty acids (acetic acid and propionic acid) were also detected in these beverages. Likewise, both kefir beverages inhibited biofilm formation of the opportunistic pathogen Pseudomonas aeruginosa.
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Affiliation(s)
- Claudia Ibacache-Quiroga
- Escuela de Nutrición y Dietética, Facultad de Farmacia, Universidad de Valparaíso, Valparaíso 2360102, Chile
- Centro de Micro-Bioinnovación, Universidad de Valparaíso, Valparaíso 2360102, Chile; (K.G.-P.); (M.C.); (R.D.-V.)
- Correspondence: (C.I.-Q.); (M.A.D.); Tel.: +56-322-508-440 (C.I.-Q.); +56-322-508-442 (M.A.D.)
| | - Karoll González-Pizarro
- Centro de Micro-Bioinnovación, Universidad de Valparaíso, Valparaíso 2360102, Chile; (K.G.-P.); (M.C.); (R.D.-V.)
| | - Mariam Charifeh
- Centro de Micro-Bioinnovación, Universidad de Valparaíso, Valparaíso 2360102, Chile; (K.G.-P.); (M.C.); (R.D.-V.)
| | - Christian Canales
- Facultad de Ingeniería y Tecnología, Universidad San Sebastián, Concepción 4080871, Chile;
| | - Rodrigo Díaz-Viciedo
- Centro de Micro-Bioinnovación, Universidad de Valparaíso, Valparaíso 2360102, Chile; (K.G.-P.); (M.C.); (R.D.-V.)
- Escuela de Química y Farmacia, Facultad de Farmacia, Universidad de Valparaíso, Valparaíso 2360102, Chile
| | - Oliver Schmachtenberg
- Instituto de Biología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso 2360102, Chile;
- Centro Interdisciplinario de Neurociencias (CINV), Universidad de Valparaíso, Valparaíso 2381850, Chile
| | - M. Alejandro Dinamarca
- Escuela de Nutrición y Dietética, Facultad de Farmacia, Universidad de Valparaíso, Valparaíso 2360102, Chile
- Centro de Micro-Bioinnovación, Universidad de Valparaíso, Valparaíso 2360102, Chile; (K.G.-P.); (M.C.); (R.D.-V.)
- Correspondence: (C.I.-Q.); (M.A.D.); Tel.: +56-322-508-440 (C.I.-Q.); +56-322-508-442 (M.A.D.)
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15
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Study of the physico-chemical, structural, microbiological properties and volatile flavour compounds profile of kefir supplemented with electro-activated whey. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2021.105218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Comprehensive utilisation of electro-activated whey-based media in cell growth, metabolite production and aroma compounds synthesis using a starter culture originated from kefir grains. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2021.105276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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WATER KEFIR, A FERMENTED BEVERAGE CONTAINING PROBIOTIC MICROORGANISMS: FROM ANCIENT AND ARTISANAL MANUFACTURE TO INDUSTRIALIZED AND REGULATED COMMERCIALIZATION. FUTURE FOODS 2022. [DOI: 10.1016/j.fufo.2022.100123] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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18
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Duran FE, Özdemir N, Güneşer O, Kök-Taş T. Prominent strains of kefir grains in the formation of volatile compound profile in milk medium; the role of Lactobacillus kefiranofaciens subsp. kefiranofaciens, Lentilactobacillus kefiri and Lentilactobacillus parakefiri. Eur Food Res Technol 2022. [DOI: 10.1007/s00217-021-03936-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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BURAN İ, AKAL HC, OZTURKOĞLU-BUDAK S, YETISEMIYEN A. Effect of milk kind on the physicochemical and sensorial properties of synbiotic kefirs containing Lactobacillus acidophilus LA-5 and Bifidobacterium bifidum BB-11 accompanied with inulin. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.08421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Paredes JL, Escudero-Gilete ML, Vicario IM. A new functional kefir fermented beverage obtained from fruit and vegetable juice: Development and characterization. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112728] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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21
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Culture media based on effluent derived from soy protein concentrate production for Lacticaseibacillus paracasei 90 biomass production: statistical optimisation, mineral characterization, and metabolic activities. Antonie van Leeuwenhoek 2021; 114:2047-2063. [PMID: 34609626 DOI: 10.1007/s10482-021-01660-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 09/11/2021] [Indexed: 10/20/2022]
Abstract
The waste and by-products of the soybean industry could be an economic source of nutrients to satisfy the high nutritional demands for the cultivation of lactic acid bacteria. The aims of this work were to maximize the biomass production of Lacticaseibacillus paracasei 90 (L90) in three culture media formulated from an effluent derived from soy protein concentrate production and to assess the effects these media have on the enzymatic activity of L90, together with their influence on its fermentation profile in milk. The presence of essential minerals and fermentable carbohydrates (sucrose, raffinose, and stachyose) in the effluent was verified. L90 reached high levels of microbiological counts (∼ 9 log cfu mL-1) and dry weight (> 1 g L-1) on the three optimized media. Enzymatic activities (lactate dehydrogenase and β-galactosidase) of L90, and its metabolism of lactose and citric acid, as well as lactic acid and pyruvic acid production in milk, were modified depending on the growth media. The ability of the L90 to produce the key flavour compounds (diacetyl and acetoin) was maintained or improved by growing in the optimized media in comparison with MRS.
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Kefir Culture-Mediated Fermentation to Improve Phenolic-Linked Antioxidant, Anti-Hyperglycemic and Human Gut Health Benefits in Sprouted Food Barley. Appl Microbiol 2021. [DOI: 10.3390/applmicrobiol1020026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The bioprocessing strategy is an effective approach to improve bioavailability and stability of bioactive compounds for designing functional foods and ingredients. In this study, food barley was bio-transformed to improve functional bioactives by sprouting, coupled with beneficial lactic acid bacteria (LAB)-based fermentation. Dairy Kefir culture with mixed beneficial LAB strains was targeted to ferment aqueous slurries of sprouted hulless food barley flour (unpigmented, purple, and black barley) for 72 h, and modulation of phenolic-linked antioxidant and anti-hyperglycemic functionalities were evaluated using in vitro assay models. The biochemical parameters analyzed were total soluble phenolic (TSP) content, profile of phenolic compounds, total antioxidant activity, and anti-hyperglycemic property-relevant α-amylase and α-glucosidase enzyme inhibitory activities. Furthermore, human gut health benefits of relevant properties of fermented slurries of barley flour were also evaluated based on growth of Kefir culture and subsequent determination of anti-bacterial potential against pathogenic human ulcer causing bacteria Helicobacter pylori. Kefir culture-mediated fermentation of 48-h sprouted barley flours improved the TSP content and associated antioxidant and anti-hyperglycemic functionalities. Additionally, anti-bacterial potential against H. pylori and sustaining active growth of viable LAB cells above the minimum level required for probiotic activity were also observed in fermented food barley flour slurries.
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Rizo J, Guillén D, Díaz-Ruiz G, Wacher C, Encarnación S, Sánchez S, Rodríguez-Sanoja R. Metaproteomic Insights Into the Microbial Community in Pozol. Front Nutr 2021; 8:714814. [PMID: 34490328 DOI: 10.3389/fnut.2021.714814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/05/2021] [Indexed: 01/11/2023] Open
Abstract
Pozol is an acidic, refreshing, and non-alcoholic traditional Mayan beverage made with nixtamalized corn dough that is fermented spontaneously. The extensive analysis of the microbiology, biochemistry and metaproteomics of pozol allowed the construction of a comprehensive image of the fermentation system. The main changes in both the substrate and the microbiota occurred in the first 9 h of fermentation. The increase in microorganisms correlated with the drop in pH and with the decrease in the contents of carbohydrates, lipids, and nitrogen, which shows that this stage has the highest metabolic activity. Bacterial proteins were mainly represented by those of lactic acid bacteria, and among them, the proteins from genus Streptococcus was overwhelmingly the most abundant. Yeast proteins were present in all the analyzed samples, while proteins from filamentous fungi increased up to 48 h. The metaproteomic approach allowed us to identify several previously unknown enzyme complexes in the system. Additionally, enzymes for hydrolysis of starch, hemicellulose and cellulose were found, indicating that all these substrates can be used as a carbon source by the microbiota. Finally, enzymes related to the production of essential intermediates involved in the synthesis of organic acids, acetoin, butanediol, fatty acids and amino acids important for the generation of compounds that contribute to the sensorial quality of pozol, were found.
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Affiliation(s)
- Jocelin Rizo
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.,Programa de Doctorado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Daniel Guillén
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Gloria Díaz-Ruiz
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carmen Wacher
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Sergio Encarnación
- Departamento de Genómica Funcional de Procariontes, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Sergio Sánchez
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Romina Rodríguez-Sanoja
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
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Sözeri Atik D, Gürbüz B, Bölük E, Palabıyık İ. Development of vegan kefir fortified with Spirulina platensis. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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25
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Ozcelik F, Akan E, Kinik O. Use of Cornelian cherry, hawthorn, red plum, roseship and pomegranate juices in the production of water kefir beverages. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Goktas H, Dikmen H, Demirbas F, Sagdic O, Dertli E. Characterisation of probiotic properties of yeast strains isolated from kefir samples. INT J DAIRY TECHNOL 2021. [DOI: 10.1111/1471-0307.12802] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Hamza Goktas
- Vocational School Programme of Food Science and Technology Istinye University Istanbul 34020 Turkey
| | - Hilal Dikmen
- Faculty of Chemical and Metallurgical Engineering, Department of Food Engineering Yildiz Technical University Istanbul 34210 Turkey
| | - Fatmanur Demirbas
- Faculty of Chemical and Metallurgical Engineering, Department of Food Engineering Yildiz Technical University Istanbul 34210 Turkey
| | - Osman Sagdic
- Faculty of Chemical and Metallurgical Engineering, Department of Food Engineering Yildiz Technical University Istanbul 34210 Turkey
| | - Enes Dertli
- Faculty of Chemical and Metallurgical Engineering, Department of Food Engineering Yildiz Technical University Istanbul 34210 Turkey
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Guzel-Seydim ZB, Gökırmaklı Ç, Greene AK. A comparison of milk kefir and water kefir: Physical, chemical, microbiological and functional properties. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.04.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Guangsen T, Xiang L, Jiahu G. Microbial diversity and volatile metabolites of kefir prepared by different milk types. CYTA - JOURNAL OF FOOD 2021. [DOI: 10.1080/19476337.2021.1912190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Tong Guangsen
- Culinary Institute, Sichuan Tourism University, Chengdu, China
| | - Li Xiang
- Culinary Institute, Sichuan Tourism University, Chengdu, China
| | - Guo Jiahu
- Academy of ESH, Sichuan Staff University of Science and Technology, Chengdu, China
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Chemical Constitution and Antimicrobial Activity of Kefir Fermented Beverage. Molecules 2021; 26:molecules26092635. [PMID: 33946451 PMCID: PMC8125171 DOI: 10.3390/molecules26092635] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 04/28/2021] [Indexed: 12/31/2022] Open
Abstract
Kefir beverage (KB) is a fermented milk initiated by kefir grains rich with starter probiotics. The KB produced in this study seemed to contain many chemical compounds elucidated by gas chromatography-mass spectrometry (GC-MS) and IR spectra. These compounds could be classified into different chemical groups such as alcohols, phenols, esters, fatty esters, unsaturated fatty esters, steroids, polyalkenes, heterocyclic compounds and aromatic aldehydes. Both KB and neutralized kefir beverage (NKB) inhibited some pathogenic bacteria including Escherichia coli ATCC11229 (E. coli), Listeria monocytogenes ATCC 4957 (L. monocytogenes), Bacillus cereus ATCC 14579 (B. cereus), Salmonella typhimurium ATCC 14028 (Sal. typhimurium) as well as some tested fungal strains such as Aspergillus flavus ATCC 16872 (A. flavus) and Aspergillus niger ATCC 20611 (A. niger), but the inhibitory activity of KB was more powerful than that obtained by NKB. It also appeared to contain four lactic acid bacteria species, one acetic acid bacterium and two yeast species. Finally, the KB inhibited distinctively both S. aureus and Sal. typhimurium bacteria in a brain heart infusion broth and in some Egyptian fruit juices, including those made with apples, guava, strawberries and tomatoes.
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Sarica E, Coşkun H. Effect of frozen storage on some characteristics of kefir samples made from cow's and goat's milk. FOOD SCI TECHNOL INT 2021; 28:157-168. [PMID: 33752472 DOI: 10.1177/10820132211003710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study was aimed to determine the changes in kefir samples (CK and GK) made from cow's and goat's milk during frozen storage. The CK and GK samples were first stored at +4 °C for 14 and 21 days. Thereafter, all the samples were frozen at -35 °C for 24 h and kept at -18 °C for 45 days. There was no significant change in the fat, protein, acidity and pH values in both samples during the storage. The values of viscosity, WI and C* were higher in the CK samples while the syneresis value was higher in the GK samples throughout the frozen storage. The microorganisms (Lactococcus spp., Lactobacillus spp., Leuconostoc spp., total mesophilic aerobic bacteria and yeasts) found in kefir made from goat's milk were more affected from the frozen storage. In both samples, the changes in organic acids and volatile flavor components were not significant during frozen storage, except acetic, citric and oxalic acids and acetaldehyde in GK sample. In addition, CK samples were preferred sensorially more by the panellists during frozen storage.
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Affiliation(s)
- Ercan Sarica
- Department of Food Engineering, Faculty of Engineering, Bolu Abant İzzet Baysal University, Bolu, Turkey
| | - Hayri Coşkun
- Department of Food Engineering, Faculty of Engineering, Bolu Abant İzzet Baysal University, Bolu, Turkey
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31
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Mendes RML, Andrade RHCD, Marques MDFF, Andrade ERD. Potential use of the passion fruit from caatinga in kefir. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2020.100809] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kruk M, Trząskowska M, Ścibisz I, Pokorski P. Application of the "SCOBY" and Kombucha Tea for the Production of Fermented Milk Drinks. Microorganisms 2021; 9:123. [PMID: 33430207 PMCID: PMC7825737 DOI: 10.3390/microorganisms9010123] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/19/2020] [Accepted: 01/05/2021] [Indexed: 11/16/2022] Open
Abstract
For the production of fermented milk drinks, cultures of microorganisms other than traditionally applied can be used. Such possibilities are created by the symbiotic culture of bacteria and yeast (SCOBY), which is used to produce kombucha. The aim of the study was to evaluate the possibility of using kombucha and the SCOBY for fermented milk drink products. The drinks were developed with a lactose-free variant and traditional milk. For the analysis of the obtained beverages, microbiological methods (CFU method), chemical methods (pH method and HPLC method) and the quantitative descriptive analysis (QDA) sensory method were used. As a result of the research, a recipe and the fermentation parameters for fermented milk drinks were developed. In the developed lactose milk drinks, the average lactose content was 4.25 g/100 g. In lactose-free milk drinks, the average glucose content was 2.26 g/100 g. Lactic acid in both types of products was at the highest average level of 0.68 g/100 g. The products had a characteristic pH value for fermented milk drinks and a very good microbiological quality, which followed the FAO/WHO guidelines. Drinks also had a typical sensory profile for this products group. However, slight sensory defects were detected. The developed fermented milk drinks have a potential health-promoting value, thanks to the content of active microflora and organic acids, which have a confirmed positive effect on the human body. The drinks produced require further testing to optimize their cost of production, possible health benefits and sensory quality.
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Affiliation(s)
- Marcin Kruk
- Faculty of Human Nutrition, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159c, 02-776 Warsaw, Poland; (M.K.); (P.P.)
| | - Monika Trząskowska
- Chair of Food Hygiene and Quality Management, Department of Food Gastronomy and Food Hygiene, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159c, 02-776 Warsaw, Poland
| | - Iwona Ścibisz
- Department of Food Technology and Assessment, Division of Fruit and Vegetable Technology, Institute of Food Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159c, 02-776 Warsaw, Poland;
| | - Patryk Pokorski
- Faculty of Human Nutrition, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159c, 02-776 Warsaw, Poland; (M.K.); (P.P.)
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Beirami-Serizkani F, Hojjati M, Jooyandeh H. The effect of microbial transglutaminase enzyme and Persian gum on the characteristics of traditional kefir drink. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2020.104843] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sharma H, Ramanathan R. Gas chromatography-mass spectrometry based metabolomic approach to investigate the changes in goat milk yoghurt during storage. Food Res Int 2020; 140:110072. [PMID: 33648294 DOI: 10.1016/j.foodres.2020.110072] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/15/2020] [Accepted: 12/22/2020] [Indexed: 02/08/2023]
Abstract
The overall goal was to utilize a gas chromatography spectrometry based metabolomics approach to investigate the metabolite changes in goat milk yoghurt during storage. A total of 129 metabolites were identified in goat milk yoghurt during 28 days refrigerated storage. Among 129, 39 metabolites were differentially regulated (p < 0.05) wherein 22 were upregulated (UR) and 17 were downregulated (DR). 17 (9 UR, 8 DR), 20 (11 UR, 9 DR) and 2 (both UR) differential metabolites were identified during storage period of 0-14, 14-28, and 0-28 days, respectively. Metabolic pathway analysis revealed that aminoacyl-tRNA biosynthesis, phenylalanine, tyrosine and tryptophan biosynthesis and phenylalanine metabolism altered during 0-14 days storage; while fatty acid biosynthesis, and propanoate metabolism altered during 14-28 days of storage. Metabolite-gene interaction analysis identified genes regulated by differentially expressed metabolites. Functional annotation of interacted genes in corroboration with that of KEGG pathway analysis provided the probable mechanisms that altered the metabolites during storage. These findings reveal comprehensive insights into the metabolite alterations during storage. This research provides practical information for developing goat milk yoghurt with enhanced bio-activities and would aid in future investigations into the nutritional research and isolation of functional compounds.
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Affiliation(s)
- Heena Sharma
- National Dairy Research Institute, Karnal, Haryana, India; Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, USA.
| | - Ranjith Ramanathan
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK, USA.
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SETYAWARDANI T, SUMARMONO J, ARIEF II, RAHARDJO AHD, WIDAYAKA K, SANTOSA SS. Improving composition and microbiological characteristics of milk kefir using colostrum. FOOD SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1590/fst.31719] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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36
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Performance of Lactobacillus paracasei 90 as an adjunct culture in soft cheese under cold chain interruption. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2020.104779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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37
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Marangoni Júnior L, Vieira RP, Anjos CAR. Kefiran-based films: Fundamental concepts, formulation strategies and properties. Carbohydr Polym 2020; 246:116609. [DOI: 10.1016/j.carbpol.2020.116609] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 05/17/2020] [Accepted: 05/26/2020] [Indexed: 12/19/2022]
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Azizkhania M, Sarisb PEJ, Baniasadic M. Inhibitory Effect of Different Types of Fermented Milk on Candida albicans. INTERNATIONAL JOURNAL OF ENTERIC PATHOGENS 2020. [DOI: 10.34172/ijep.2020.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background: Candida albicans (C. albicans) is known as an opportunistic fungal pathogen, and although it is a normal flora of the gastrointestinal tract, it has the ability to colonize every human tissue, causing serious and invasive infections. Objective: This study focused on the antifungal activity of the produced yogurts and kefirs from cow, camel, sheep, and goat milk against C. albicans during the storage period at 4 º C. Materials and Methods: The pH, titratable acidity, the content of some organic acids, and anti-Candida activity of yogurt and kefir samples were evaluated based on the aim of the study. Results: The titratable acidity of the samples significantly increased after the fermentation, along with pH reductions. The concentration of lactic and pyruvic acids increased during the fermentation while citric, uric, and hippuric acid content demonstrated a decrease. The results revealed that kefir samples had a stronger anti-Candida effect compared to yogurt samples. On the first day of the storage period, the growth inhibitory effect of sheep milk kefir was 90.20%, followed by camel kefir (78.37%), goat kefir (74.52%), cow kefir (73.23%), sheep yogurt (48.56%), camel yogurt (37.51%), cow yogurt (34.42%), and goat yogurt (30.32%). Eventually, the inhibition rate of sheep milk kefir reached 96.50% after 20 days of storage. Conclusion: It seems that kefir may be used as a nutraceutical and functional food against C.albicans infections.
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Affiliation(s)
- Maryam Azizkhania
- Ph.D., Associate Professor (Supervisor), Department of Food Hygiene, Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Aftab 24 Street, Imam Khomeini Avenue, Amol, Iran
| | - Per Erik Joakim Sarisb
- Ph.D., Full Professor (Advisor), Department of Microbiology, University of Helsinki, Helsinki, Finland
| | - Mehdi Baniasadic
- M.Sc. Student, Department of Food Hygiene, Faculty of Veterinary Medicine, Amol University of Special Modern Technologies, Aftab 24 Street, Imam Khomeini Avenue, Amol, Iran
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Salaspuro M. Local Acetaldehyde: Its Key Role in Alcohol-Related Oropharyngeal Cancer. Visc Med 2020; 36:167-173. [PMID: 32775346 DOI: 10.1159/000507234] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 03/11/2020] [Indexed: 12/31/2022] Open
Abstract
Background Alcohol consumption and ethanol in alcoholic beverages are group 1 carcinogens, that is, carcinogenic to humans. However, ethanol itself is neither genotoxic nor mutagenic. Based on unique gene-epidemiologic and gene-biochemical evidence, the first metabolite of ethanol oxidation - acetaldehyde (ACH) - acts as a local carcinogen in the oropharynx. This review is focused on those facts, which highlight the importance of the oropharynx and local ACH in the pathogenesis of alcohol-related oropharyngeal cancer. Summary The strongest evidence for the local carcinogenicity of ACH in man provides a point mutation in the aldehyde dehydrogenase 2 (ALDH2) gene, which has randomized millions of alcohol consumers to markedly increased ACH exposure via saliva. This novel human cancer model is associated with manifold risk for oropharyngeal cancer and most importantly it is free from confounding factors markedly hampering epidemiological studies on alcohol-related cancer. The oropharynx is an ideal target organ for the cancer risk assessment of ACH. There is substantial epidemiological data on alcohol-related oropharyngeal cancer risk and also on salivary ACH concentrations among major risk groups for oropharyngeal cancer. Normal human saliva does not contain measurable levels of ACH. However, alcohol ingestion results within seconds in a concentration-dependent accumulation of ACH in saliva, which continues for up to 10-15 min after each sip of alcoholic beverage. This instant ACH exposure phase is followed by a long-term phase derived from ethanol diffused back to saliva from blood circulation. Microbes representing normal oral flora play a major role in local ACH formation from ethanol. In ALDH2-deficient subjects excess ACH during the long-term ACH exposure phase is most probably derived from salivary glands. Key Message ALDH2 gene mutation proves the causal relationship between local ACH exposure via saliva and oropharyngeal cancer and provides new means for the quantitative assessment of local ACH exposure in relation to oropharyngeal cancer risk. Instant ACH formation from ethanol represents approximately 70-100% of total local ACH exposure. Ethanol present in "non-alcoholic" beverages and food forms an epidemiological bias in studies on alcohol-related upper digestive tract cancer. Responses One should quit smoking, adopt sensible drinking habits, and maintain good oral hygiene. Genetic risk groups could be screened and educated. Consumption of beverages and foodstuffs containing low ethanol levels as well as alcoholic beverages containing high ACH levels should be minimized. To that aim, labelling of alcohol and ACH concentrations of all beverages and foodstuffs should be mandatory.
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Affiliation(s)
- Mikko Salaspuro
- Research Unit on Acetaldehyde and Cancer, University of Helsinki, Biomedicum Helsinki, Helsinki, Finland
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Cuvas-Limon RB, Nobre C, Cruz M, Rodriguez-Jasso RM, Ruíz HA, Loredo-Treviño A, Texeira JA, Belmares R. Spontaneously fermented traditional beverages as a source of bioactive compounds: an overview. Crit Rev Food Sci Nutr 2020; 61:2984-3006. [PMID: 32662286 DOI: 10.1080/10408398.2020.1791050] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Fermented food has been present throughout history, since fermentation not only helps preserving food, but also provides specific organoleptic characteristics typically associated to these foods. Most of the traditional fermented foods and artisanal beverages are produced by spontaneous generation, meaning no control of the microbiota, or the substrate used. Nevertheless, even not being standardized, they are an important source of bioactive compounds, such as antioxidant compounds, bioactive beeps, short chain fatty acids, amino acids, vitamins, and minerals. This review compiles a list of relevant traditional fermented beverages around the world, aiming to detail the fermentation process itself-including source of microorganisms, substrates, produced metabolites and the operational conditions involved. As well as to list the bioactive compounds present in each fermented food, together with their impact in the human health. Traditional fermented beverages from Mexico will be highlighted. These compounds are of high interest for the food, pharmaceutical and cosmetics industry. To scale-up the home fermentation processes, it is necessary to fully understand the microbiology and biochemistry behind these traditional products. The use of good quality raw materials with standardized methodologies and defined microorganisms, may improve and increase the production of the desirable bioactive compounds and open a market for novel functional products.
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Affiliation(s)
- R B Cuvas-Limon
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Coahuila, Saltillo, Coahuila, Mexico.,Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Clarisse Nobre
- Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Mario Cruz
- Department of Food Science and Technology, Antonio Narro Autonomous Agricultural University, Saltillo, Coahuila, Mexico
| | - Rosa M Rodriguez-Jasso
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Coahuila, Saltillo, Coahuila, Mexico
| | - Héctor A Ruíz
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Coahuila, Saltillo, Coahuila, Mexico
| | - Araceli Loredo-Treviño
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Coahuila, Saltillo, Coahuila, Mexico
| | - J A Texeira
- Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Ruth Belmares
- Food Research Department, School of Chemical Sciences, Autonomous University of Coahuila, Saltillo Coahuila, Saltillo, Coahuila, Mexico
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Study of kefir drinks produced by backslopping method using kefir grains from Bosnia and Herzegovina: Microbial dynamics and volatilome profile. Food Res Int 2020; 137:109369. [PMID: 33233071 DOI: 10.1016/j.foodres.2020.109369] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 05/06/2020] [Accepted: 05/28/2020] [Indexed: 02/06/2023]
Abstract
Kefir is a well-known health-promoting beverage that can be produced by using kefir grains (traditional method) or by using natural starter cultures from kefir (backslopping method). The aim of this study was to elucidate the microbial dynamics and volatilome profile occurring during kefir production through traditional and backslopping methods by using five kefir grains that were collected in Bosnia and Herzegovina. The results from conventional pour plating techniques and amplicon-based sequencing were combined. The kefir drinks have also been characterized in terms of their physico-chemical and colorimetric parameters. A bacterial shift from Lactobacillus kefiranofaciens to Acetobacter syzygii, Lactococcus lactis and Leuconostoc pseudomesenteroides from kefir grains in traditional kefir to backslopped kefir was generally observed. Despite some differences within samples, the dominant mycobiota of backslopped kefir samples remained quite similar to that of the kefir grain samples. However, unlike the lactic acid and acetic acid bacteria, the yeast counts decreased progressively from the grains to the backslopped kefir. The backslopped kefir samples showed higher protein, lactose and ash content and lower ethanol content compared to traditional kefir samples, coupled with optimal pH values that contribute to a pleasant sensory profile. Concerning the volatilome, backslopped kefir samples were correlated with cheesy, buttery, floral and fermented odors, whereas the traditional kefir samples were correlated with alcoholic, fruity, fatty and acid odors. Overall, the data obtained in the present study provided evidence that different kefir production methods (traditional vs backslopping) affect the quality characteristics of the final product. Hence, the functional traits of backslopped kefir should be further investigated in order to verify the suitability of a potential scale-up methodology for backslopping.
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Microbiological, Biochemical, and Functional Aspects of Fermented Vegetable and Fruit Beverages. J CHEM-NY 2020. [DOI: 10.1155/2020/5790432] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In recent years, the request for the functional beverages that promote health and wellness has increased. In fact, fermented juices are an excellent delivering means for bioactive components. Their production is of crucial importance to supply probiotics, in particular, for people with particulars needs like dairy-product allergic consumers and vegetarians. This review focuses on recent findings regarding the microbial composition and the health benefits of fermented fruit and vegetable beverages by lactic acid bacteria, kefir grains, and SCOBY as well as discussing the metabolites resulting from these fermentations process. Moreover, limits that could restrain their production at the industrial level and solutions that have been proposed to overcome these constraints are also reviewed.
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Carullo G, Governa P, Spizzirri UG, Biagi M, Sciubba F, Giorgi G, Loizzo MR, Di Cocco ME, Aiello F, Restuccia D. Sangiovese cv Pomace Seeds Extract-Fortified Kefir Exerts Anti-Inflammatory Activity in an In Vitro Model of Intestinal Epithelium Using Caco-2 Cells. Antioxidants (Basel) 2020; 9:E54. [PMID: 31936207 PMCID: PMC7022605 DOI: 10.3390/antiox9010054] [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: 12/05/2019] [Revised: 01/04/2020] [Accepted: 01/05/2020] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel disease and food allergies are a growing topic in the field of nutrition science. Polyphenols, which are the most important secondary metabolites of plants, demonstrated to modulate the expression and/or production of numerous proteins, but also to regulate the intestinal ecosystem. In this context, our aim was the investigation of protective effects against the gastrointestinal mucosa of fortified milk kefir obtained by adding seeds extract from Sangiovese cv. Pomace. Methods: An ultrasound-assisted method was used to obtain the extracts. All the extracts were assayed for the antioxidant activity. The best extract was used as an additive of fermented milk kefir to obtain a fortified final product. Kefir samples were analyzed by NMR spectroscopy. The efficiency of the barrier functions was evaluated by measuring trans-epithelial electric resistance (TEER) using a voltmeter. Results: the enriched kefir (Ksgn) possesses higher antioxidant performances compared to the unfortified sample (Kwht). Kwht and Ksgn did not alter Caco-2 TEER in basal condition.
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Affiliation(s)
- Gabriele Carullo
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione—Dipartimento di Eccellenza 2018-2022, Università della Calabria, Edificio Polifunzionale, 87036 Rende (CS), Italy; (G.C.); (U.G.S.); (M.R.L.); (D.R.)
| | - Paolo Governa
- Dipartimento di Biotecnologie, Chimica e Farmacia—Dipartimento di Eccellenza 2018-2022, Università di Siena, Via Aldo Moro 2, 53100 Siena, Italy; (P.G.); (G.G.)
| | - Umile Gianfranco Spizzirri
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione—Dipartimento di Eccellenza 2018-2022, Università della Calabria, Edificio Polifunzionale, 87036 Rende (CS), Italy; (G.C.); (U.G.S.); (M.R.L.); (D.R.)
| | - Marco Biagi
- Dipartimento di Scienze Fisiche, della Terra e dell’Ambiente, Università di Siena, Via Laterina 8, 53100 Siena, Italy;
| | - Fabio Sciubba
- Dipartimento di Chimica, Università di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy; (F.S.); (M.E.D.C.)
| | - Gianluca Giorgi
- Dipartimento di Biotecnologie, Chimica e Farmacia—Dipartimento di Eccellenza 2018-2022, Università di Siena, Via Aldo Moro 2, 53100 Siena, Italy; (P.G.); (G.G.)
| | - Monica Rosa Loizzo
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione—Dipartimento di Eccellenza 2018-2022, Università della Calabria, Edificio Polifunzionale, 87036 Rende (CS), Italy; (G.C.); (U.G.S.); (M.R.L.); (D.R.)
| | - Maria Enrica Di Cocco
- Dipartimento di Chimica, Università di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy; (F.S.); (M.E.D.C.)
| | - Francesca Aiello
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione—Dipartimento di Eccellenza 2018-2022, Università della Calabria, Edificio Polifunzionale, 87036 Rende (CS), Italy; (G.C.); (U.G.S.); (M.R.L.); (D.R.)
| | - Donatella Restuccia
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione—Dipartimento di Eccellenza 2018-2022, Università della Calabria, Edificio Polifunzionale, 87036 Rende (CS), Italy; (G.C.); (U.G.S.); (M.R.L.); (D.R.)
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Matos RS, Gonçalves ECM, Pinto EP, Lopes GAC, Ferreira NS, Resende CX. Nanoscale morphology, structure and fractal study of kefir microbial films grown in natura. POLIMEROS 2020. [DOI: 10.1590/0104-1428.04020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Robert S. Matos
- Universidade Federal de Sergipe, Brasil; Universidade Federal do Amapá, Brasil
| | | | | | - Gerson A. C. Lopes
- Universidade Federal de Sergipe, Brasil; Universidade do Estado do Amapá, Brasil
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Fang X, Guo LW, Chen H, Ke WC, Guo W, Guo XS, Zhang Y. Characteristics of volatile flavor components in traditional fermented yak milk produced in different ecoregions of the Qinghai-Tibetan plateau. J Dairy Sci 2019; 103:191-200. [PMID: 31677830 DOI: 10.3168/jds.2019-17312] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 09/11/2019] [Indexed: 12/15/2022]
Abstract
The volatile flavor substances in traditional fermented yak milk samples collected from 5 ecoregions (A: coniferous forests and grasslands of the Qilian Qingdong Mountains; B: alpine grasslands surrounding the lakes in the Qiangtang Plateau; C: alpine shrubs and meadows of the Guoluo-Nagqu Highlands; D: coniferous forests along the alpine valley in East Tibet; E: shrubs and grasslands along the alpine valley in South Tibet) of the Qinghai-Tibetan plateau were comparatively analyzed. The relative percentage composition of volatile flavor substances varied among the different ecoregions. In samples collected from region E, more than 50% of the volatile flavor compounds were esters comprising mainly n-butyl acetate, butyl butyrate, and ethyl octanoate, and a considerable proportion of acetoin was found in samples from regions B and E. Greater proportions of 2-heptanone and 2-nonanone were observed in samples collected from regions A, C, and D compared with regions B and E.
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Affiliation(s)
- X Fang
- Department of Nutrition and Food Hygiene, School of Public Health, Lanzhou University, Lanzhou 730000, PR China
| | - L W Guo
- Department of Epidemiology and Health Statistics, College of Public Health, Sichuan University, Chengdu 610041, PR China
| | - H Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Lanzhou University, Lanzhou 730000, PR China
| | - W C Ke
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - W Guo
- College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - X S Guo
- State Key Laboratory of Grassland and Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China.
| | - Y Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Lanzhou University, Lanzhou 730000, PR China.
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Ng KS, Wang SY, Chen MJ. A novel immobilized cell system involving Taiwanese kefir microorganisms and sugar cane pieces for fermented milk production. J Dairy Sci 2019; 103:141-149. [PMID: 31629528 DOI: 10.3168/jds.2019-16763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 08/30/2019] [Indexed: 11/19/2022]
Abstract
The objective of this study was to develop a novel immobilized system using kefir lactic acid bacteria and sugar cane pieces for the production of fermented milk. Lactobacillus kefiranofaciens HL1, Lactobacillus kefiri HL2, Leuconostoc mesenteroides HL3, and Lactococcus lactis HL4 were isolated from Taiwanese kefir grains and immobilized on pieces of sugar cane using adsorption. Scanning electron micrographs of the cell-immobilized sugar cane pieces (CISCP) showed that the microorganisms were embedded within the porous structures of the sugar cane pieces. During 28 cycles of repeated batch fermentation, viable cells on both sugar cane pieces and fermented products were maintained at 10 log cfu/g (cfu/mL). Random amplified polymorphic DNA PCR analysis revealed that Leu. mesenteroides HL3 (29-43%) and Lc. lactis HL4 (31-49%) were predominant on the CISCP, and the fermented samples had 79% Lc. lactis HL4. When tracking fermentation parameters, the data on the microbial, chemical, and physical properties of the fermented milk suggested that the CISCP had stable fermentative ability over the course of successive fermentations. We found an enhancement of the acid-producing ability of CISCP as the number of fermentations increased, with a significant growth in titratable acidity from 0.65 to 0.81% by the end.
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Affiliation(s)
- Ker-Sin Ng
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan 10617
| | - Sheng-Yao Wang
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan 10617.
| | - Ming-Ju Chen
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan 10617.
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Sevencan NO, Isler M, Kapucuoglu FN, Senol A, Kayhan B, Kiztanir S, Kockar MC. Dose-dependent effects of kefir on colitis induced by trinitrobenzene sulfonic acid in rats. Food Sci Nutr 2019; 7:3110-3118. [PMID: 31572604 PMCID: PMC6766543 DOI: 10.1002/fsn3.1174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 07/23/2019] [Indexed: 01/01/2023] Open
Abstract
Evidence suggests that gut microbiota dysbiosis plays a critical role in the initiation and promotion of inflammatory bowel disease (IBD). Kefir is a fermented dairy product including yeast and bacterial species. We aimed to investigate the effect of kefir on trinitrobenzene sulfonic acid (TNBS)-induced colitis in rats using two different doses. Fifty-four Wistar rats were divided into six groups. For 14 days, the normal control and colitis control groups were given tap water, kefir10 control, kefir10 colitis, and kefir30 control, and the kefir30 colitis groups were given phosphate-buffered saline containing 10% or 30% kefir, respectively, instead of tap water. Colitis was induced by intracolonically administrating TNBS in the colitis control, kefir10 colitis, and kefir30 colitis groups. On the 14th day, the rats were sacrificed. The weights and lengths of the colons were measured and macroscopically evaluated, and the distal 10 cm segments were subjected to a histopathological examination. The incidence of bloody stool and diarrhea in the kefir10 colitis group was found to be less than the colitis control and kefir30 colitis groups. The colonic weight/length ratio in the kefir10 colitis group was lower than that in the colitis control and kefir30 colitis groups. We detected that the 10% kefir treatment reduced TNBS-induced macroscopic colonic damage, while it was exacerbated by the 30% kefir treatment. No significant difference was observed between the colitis groups in terms of microscopic colonic damage scoring. These results indicate that kefir, with a careful dose selection, may be a useful agent in the treatment of IBD.
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Affiliation(s)
- Nurhayat Ozkan Sevencan
- Department of Internal Medicine, Medical FacultyThe University of KarabukKarabukTurkey
- Department of Internal Medicine, Medical FacultyThe University of Suleyman DemirelIspartaTurkey
| | - Mehmet Isler
- Department of Gastroenterology, Medical FacultyThe University of Suleyman DemirelIspartaTurkey
- Department of GastroenterologyDavraz Yasam HospitalIspartaTurkey
| | - Fatma Nilgun Kapucuoglu
- Department of Pathology, Medical FacultyThe University of Suleyman DemirelIspartaTurkey
- Department of Pathology, Medical FacultyThe University of KocIstanbulTurkey
| | - Altug Senol
- Department of Gastroenterology, Medical FacultyThe University of Suleyman DemirelIspartaTurkey
| | - Burcak Kayhan
- Department of Internal Medicine, Medical FacultyThe University of KarabukKarabukTurkey
| | - Sefa Kiztanir
- Department of Internal Medicine, Medical FacultyThe University of Suleyman DemirelIspartaTurkey
| | - Muhammed Cem Kockar
- Department of Gastroenterology, Medical FacultyThe University of Suleyman DemirelIspartaTurkey
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Purutoğlu K, İspirli H, Yüzer MO, Serencam H, Dertli E. Diversity and functional characteristics of lactic acid bacteria from traditional kefir grains. INT J DAIRY TECHNOL 2019. [DOI: 10.1111/1471-0307.12633] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kübra Purutoğlu
- Department of Food Engineering, Faculty of Engineering Bayburt University Bayburt 69000 Turkey
| | - Hümeyra İspirli
- Department of Food Engineering, Faculty of Engineering Bayburt University Bayburt 69000 Turkey
| | - Mustafa Onur Yüzer
- Department of Food Engineering, Faculty of Engineering Bayburt University Bayburt 69000 Turkey
| | - Hüseyin Serencam
- Department of Food Engineering, Faculty of Engineering Bayburt University Bayburt 69000 Turkey
| | - Enes Dertli
- Department of Food Engineering, Faculty of Engineering Bayburt University Bayburt 69000 Turkey
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Delgado-Fernández P, Corzo N, Lizasoain S, Olano A, Moreno FJ. Fermentative properties of starter culture during manufacture of kefir with new prebiotics derived from lactulose. Int Dairy J 2019. [DOI: 10.1016/j.idairyj.2019.01.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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50
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The Effect of Unsaturated Fatty Acid Concentration on the Aroma Profile of Goat’s Milk. ANNALS OF ANIMAL SCIENCE 2019. [DOI: 10.2478/aoas-2019-0005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In this study, varying concentrations of polyunsaturated fatty acids in goat’s milk were obtained by supplementing goat feed rations with maize dried distillers grains with solubles (DDGS). In comparison to the control group, the milk of goats that received DDGS contained about 25% more polyunsaturated fatty acids, 30% more conjugated linoleic acid (CLA), and had more favorable values of the atherogenic and thrombogenic indices. The diverse composition of fatty acids present in the goat’s milk correlated with the olfactory perception of the milk and its volatile compound profile. The level of unsaturated fatty acids significantly affected the odors detected in the processed goat’s milk. The volatile compound profile of the milk was mostly differentiated by the concentrations of aldehydes (hexanal and furfural) and furanones (furaneol), which exceeded their odor threshold values. The total concentration of identified aldehydes was highest in pasteurized milk samples from the goats of the experimental group, as a result of heating. Furfural was found in pasteurized samples of both the control and experimental milk at concentrations exceeding its odor threshold (3 mg·kg−1). Feeding goats with DDGS did not change the animal, cooked, dairy fat, lack of freshness, light-oxidized, or overall dairy flavors of the raw milk. After pasteurization, milk from goats fed with DDGS retained its characteristic animal odor and gained a very intense cooked flavor.
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