Analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat’s milk and mixtures of goat’s milk with mare’s milk based on changes in electrical conductivity and impedance
The aim of this study was to analyse the metabolic activity of lactic acid bacteria and yeast based of changes in electrical conductivity and electrical impedance during fermentation of goat milk and mixtures of goat’s milk and mare’s milk (1:1, 1:2). As a result of fermentation, conductivity increa...
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| Format: | Article |
| Language: | English |
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Croatian Dairy Union
2017-01-01
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| Series: | Mljekarstvo |
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| Online Access: | https://hrcak.srce.hr/file/275639 |
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| author | Dorota Cais-Sokolińska Jacek Wójtowski Jan Pikul Małgorzata Lasik-Kurdyś |
| author_facet | Dorota Cais-Sokolińska Jacek Wójtowski Jan Pikul Małgorzata Lasik-Kurdyś |
| author_sort | Dorota Cais-Sokolińska |
| collection | DOAJ |
| description | The aim of this study was to analyse the metabolic activity of lactic acid bacteria and yeast based of changes in electrical conductivity and electrical impedance during fermentation of goat milk and mixtures of goat’s milk and mare’s milk (1:1, 1:2). As a result of fermentation, conductivity increased 1.4-fold. The conductivity of kefir prepared from goat and mare milk mixed at a ratio of 1:2 (6.210 Ω-3∙cm-1) was lower than that of the 1:1 mixture or of goat milk alone (7.242 Ω-3∙cm-1). A significant dependence of electrical conductivity and pH (0.970 ≤ r ≤ 0.993) was recorded during fermentation. The addition of mare milk to goat milk significantly slowed down the growth of LAB (Δλ = 0.8 h) and yeasts during kefir production. |
| format | Article |
| id | doaj-art-84d54ed9e5364503aeb4dc56e0e9c366 |
| institution | Kabale University |
| issn | 0026-704X 1846-4025 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Croatian Dairy Union |
| record_format | Article |
| series | Mljekarstvo |
| spelling | doaj-art-84d54ed9e5364503aeb4dc56e0e9c3662025-08-20T03:37:47ZengCroatian Dairy UnionMljekarstvo0026-704X1846-40252017-01-0167427728210.15567/mljekarstvo.2017.0405Analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat’s milk and mixtures of goat’s milk with mare’s milk based on changes in electrical conductivity and impedanceDorota Cais-Sokolińska0Jacek Wójtowski1Jan Pikul2Małgorzata Lasik-Kurdyś3Poznań University of Life Sciences, Faculty of Food Science and Nutrition, Department of Dairy Technology, 60-624 Poznań, PolandPoznań University of Life Sciences, Faculty of Veterinary Medicine and Animal Science, Department of Animal Breeding and Product Quality Assessment, 62-002 Suchy Las, PolandPoznań University of Life Sciences, Faculty of Food Science and Nutrition, Department of Dairy Technology, 60-624 Poznań, PolandPoznań University of Life Sciences, Faculty of Food Science and Nutrition, Department of Fermentation and Biosynthesis, 60-624 Poznań, PolandThe aim of this study was to analyse the metabolic activity of lactic acid bacteria and yeast based of changes in electrical conductivity and electrical impedance during fermentation of goat milk and mixtures of goat’s milk and mare’s milk (1:1, 1:2). As a result of fermentation, conductivity increased 1.4-fold. The conductivity of kefir prepared from goat and mare milk mixed at a ratio of 1:2 (6.210 Ω-3∙cm-1) was lower than that of the 1:1 mixture or of goat milk alone (7.242 Ω-3∙cm-1). A significant dependence of electrical conductivity and pH (0.970 ≤ r ≤ 0.993) was recorded during fermentation. The addition of mare milk to goat milk significantly slowed down the growth of LAB (Δλ = 0.8 h) and yeasts during kefir production.https://hrcak.srce.hr/file/275639conductivityelectrical impedancegoat’s milkmare’s milk |
| spellingShingle | Dorota Cais-Sokolińska Jacek Wójtowski Jan Pikul Małgorzata Lasik-Kurdyś Analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat’s milk and mixtures of goat’s milk with mare’s milk based on changes in electrical conductivity and impedance Mljekarstvo conductivity electrical impedance goat’s milk mare’s milk |
| title | Analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat’s milk and mixtures of goat’s milk with mare’s milk based on changes in electrical conductivity and impedance |
| title_full | Analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat’s milk and mixtures of goat’s milk with mare’s milk based on changes in electrical conductivity and impedance |
| title_fullStr | Analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat’s milk and mixtures of goat’s milk with mare’s milk based on changes in electrical conductivity and impedance |
| title_full_unstemmed | Analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat’s milk and mixtures of goat’s milk with mare’s milk based on changes in electrical conductivity and impedance |
| title_short | Analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat’s milk and mixtures of goat’s milk with mare’s milk based on changes in electrical conductivity and impedance |
| title_sort | analysis of metabolic activity of lactic acid bacteria and yeast in model kefirs made from goat s milk and mixtures of goat s milk with mare s milk based on changes in electrical conductivity and impedance |
| topic | conductivity electrical impedance goat’s milk mare’s milk |
| url | https://hrcak.srce.hr/file/275639 |
| work_keys_str_mv | AT dorotacaissokolinska analysisofmetabolicactivityoflacticacidbacteriaandyeastinmodelkefirsmadefromgoatsmilkandmixturesofgoatsmilkwithmaresmilkbasedonchangesinelectricalconductivityandimpedance AT jacekwojtowski analysisofmetabolicactivityoflacticacidbacteriaandyeastinmodelkefirsmadefromgoatsmilkandmixturesofgoatsmilkwithmaresmilkbasedonchangesinelectricalconductivityandimpedance AT janpikul analysisofmetabolicactivityoflacticacidbacteriaandyeastinmodelkefirsmadefromgoatsmilkandmixturesofgoatsmilkwithmaresmilkbasedonchangesinelectricalconductivityandimpedance AT małgorzatalasikkurdys analysisofmetabolicactivityoflacticacidbacteriaandyeastinmodelkefirsmadefromgoatsmilkandmixturesofgoatsmilkwithmaresmilkbasedonchangesinelectricalconductivityandimpedance |