Studies On The Preparation And Properties Of The Immobilized Saccharomyces Cerevisiae

This article includes four parts:Part I: A review on research and development of technology of immobilized cells and their applications.In this part, the method of immobilized-cell preparation, the support of immobilized cells and their applications were looked back. Frequently used-support of immobilized cells and the application of immobilized cells in foodstuff and fermentation industry, chemical and medical industry, energy sources and environment engineering were discussed. Frequently used-support and the improvement on support of immobilized cells were emphasized. The excellent properties of immobilized cells and bright future were given.Part II: Isolation and identification of Saccharomyces cerevisiaeIn this part, Saccharomyces cerevisiae, which can produce alcohol, were isolated from the foot soil of maize. And also it was identified.Part III: Studies on preparation and characterization of immobilized materialThis part includes two subsection:Section one: Studied on Preparation and characterization of montmorillonnite/ carrageen/ guar gum gel spherical beadsA new way to prepare composite gel spherical beads using montmorillonnite as a modifier was carried out. The beads were characterised by determining their mechanical strength, and by X-ray diffraction (XRD) and FT-IR spectroscopy. Their thermal stability and swelling kinetics were also determined.Section two: Studied on Studied on Preparation and characterization of quaternary-montmorillonnite/ carrageen/ guar gum gel spherical beads.A new way to prepare composite gel spherical beads using quaternary-MMT as a modifier was carried out. The beads were characterized with SEM, machine intensity, XRD and FTIR. The thermal stability of the composite gel spherical beads was also identified.Part IV : Studies on preparation and characterization of living Saccharomyces cerevisiae cell immobilizationThis study carried on the first step research to the possibility that turns living Saccharomyces cerevisiae cell immobilization. And the effect of storage time on the cell activity was also studied. And the optimum conditions of fermentation were determined. The temperature is 30℃, pH is 5, time is 72h.