Chemical and microbiological characterisation of kefir grains

The Journal of Dairy Research
Graciela L GarroteGraciela L De Antoni

Abstract

Chemical and microbiological composition of four Argentinean kefir grains from different sources as well as characteristics of the corresponding fermented milk were studied. Kefir grains CIDCA AGK1, AGK2 and AGK4 did not show significant differences in their chemical and microbiological composition. In contrast, protein and yeast content of AGK3 was higher than in the other grains. Although grain microflora comprised lactobacilli, lactococcus, acetic acid bacteria and yeast, we found an important difference regarding species. Lactococcus lactis subsp. lactis, Lactobacillus kefir, Lactobacillus plantarum, Acetobacter and Saccharomyces were present in all types of kefir grain. While Leuconostoc mesenteroides was only isolated from grains CIDCA AGK1 and Lactococcus lactis subsp. lactis biovar diacetylactis, Lactobacillus parakefir and Kluyveromyces marxianus were only isolated from CIDCA AGK2 grains. All grains produced acid products with pH between 3.5 and 4.0. The apparent viscosity of AGK1 fermented milk was greater than the product obtained with AGK4. All fermented milks had inhibitory power towards Escherichia coli but AGK1 and AGK2 supernatants were able to halt the bacterial growth for at least 25 h. Grain weight increment ...Continue Reading

Citations

May 14, 2008·The Journal of Dairy Research·Marina A GolowczycGraciela De Antoni
Mar 11, 2011·Critical Reviews in Food Science and Nutrition·Zeynep B Guzel-SeydimAtif C Seydim
Jul 5, 2008·Journal of Medicinal Food·M E C MoreiraJ M Schneedorf
Jun 28, 2011·Journal of Bacteriology·Yanping WangJinju Wang
Jul 5, 2013·World Journal of Microbiology & Biotechnology·Gabriela DiosmaGraciela L Garrote
Apr 23, 2014·Food Microbiology·Ufuk NalbantogluHandan Can
Jul 1, 2010·World Journal of Microbiology & Biotechnology·Karina Teixeira MagalhãesRosane Freitas Schwan
Mar 24, 2009·Antonie van Leeuwenhoek·Pablo MobiliGraciela L De Antoni
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Jan 16, 2015·Advanced Biomedical Research·Negin NooriBehshad Noudoost
Feb 2, 2016·International Journal of Food Sciences and Nutrition·Brenda L FinaAlfredo Rigalli
May 18, 2010·International Journal of Food Microbiology·David RomaninMartín Rumbo
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Jan 21, 2006·Systematic and Applied Microbiology·Isabelle MainvilleEdward R Farnworth
Mar 22, 2014·Journal of the Science of Food and Agriculture·Alejandra LonderoGraciela L Garrote
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