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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Magalhães, Karina Teixeira de M. Pereira, G. V. Dias, Disney Ribeiro Schwan, Rosane Freitas |
| Description | Country affiliation: Brazil Author Affiliation: Magalhães KT ( Biology Department, Federal University of Lavras (UFLA), 37.200-000, Lavras, MG, Brazil.) |
| Abstract | The microorganisms associated with sugary Brazilian kefir beverage were investigated using a combination of culture-dependent and -independent methods. A total of 289 bacteria and 129 yeasts were identified via phenotypic and genotypic methods. Lb. paracasei (23.8%) was the major bacterial isolate identified, followed by Acetobacter lovaniensis (16.31%), Lactobacillus parabuchneri (11.71%), Lactobacillus kefir (10.03%) and Lactococcus lactis (10.03%). Saccharomyces cerevisiae (54.26%) and Kluyveromyces lactis (20.15%) were the most common yeast species isolated. Scanning electron microscopy showed that the microbiota was dominated by lemon-shaped yeast cells growing in close association with Lactobacillus (long and curved). Some lactic acid bacteria detected by sequence analysis of DGGE (denaturing gradient gel electrophoresis) bands were not recovered at any time through fermentation by plating. Conversely, DGGE fingerprints did not reveal bands corresponding to some of the species isolated by culturing methods. The bacteria Acetobacter lovaniensis and the yeast Kazachstania aerobia are described for the first time in sugary kefir. During the 24 h of fermentation, the concentration of lactic acid ranged from 0.2 to 1.80 mg/ml, and that of acetic acid increased from 0.08 to 1.12 mg/ml. The production of ethanol was limited, reaching a final mean value of 1.24 mg/ml. |
| File Format | HTM / HTML |
| ISSN | 09593993 |
| Issue Number | 7 |
| Journal | World Journal of Microbiology and Biotechnology |
| Volume Number | 26 |
| e-ISSN | 15730972 |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2010-07-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Microbiology Discipline Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Medicine Applied Microbiology and Biotechnology Biotechnology |
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