Immobilization of yeast on delignified cellulosic material for room temperature and low-temperature wine making

The immobilization of Saccharomyces cerevisiae strain AXAZ-1 on delignified cellulosic material was examined by electron microscope. Using the biocatalyst prepared by immobilization, repeated batch fermentations (about 55) were done for glucose and separately for wine making employing must, without any loss of the activity. This biocatalyst caused about a 3-fold increase of the fermentation rate as compared with free cells. Furthermore, it was found that the delignified cellulosic material supported biocatalyst reduces the activation energy, E a