Characterisation of the exopolysaccharide kefiran produced by lactic acid bacteria entrapped within natural kefir grains
2011
ZAJÅ EK, KATJA | KOLAR, MITJA | GORÅ EK, ANDREJA
The main goal of this work was to characterise and quantify the exopolysaccharide kefiran and to discover an effective procedure for its isolation from kefir grains, originating from the Caucasian Mountains. Capillary electrophoresis was used for the characterisation and quantification of the dâglucose and dâgalactose in our samples at a mass ratio of 1:0.7. The effect of fermentation time on growth of kefir grains and the content of kefiran within the grains were determined. The pH profiles were monitored dynamically. In addition, the influence of fermentation temperature on kefir grains mass concentration (γKG) and the content of kefiran within the grains (wKEF/KG) were studied. The highest values for both were obtained at 30â°C.
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