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Freeze gelation: a new option for the production of biological ceramic composites (biocers)

机译:冷冻凝胶化:生产生物陶瓷复合材料(生物陶瓷)的新选择

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摘要

Freeze gelation was used for immobilization and conservation of living microorganisms in inorganic solids. The irreversible sol―gel transition of a mixture of colloidal silica, ceramic powder and biocomponent by freezing (freeze gelation or freeze casting) enables the production of low-cost, porous, crack-free green bodies with nearly zero shrinkage in which microorganisms are immobilized safely. First investigations to the survival rate, activity and storage ability will be presented for biocers with Bacillus sphaericus and Saccharomyces cerevisiae under the selected freeze and drying conditions. The structure of these new biocers were characterized by SEM micrographs, physical adsorption and mercury porosimetry
机译:冷冻凝胶法用于固定和保存无机固体中的活微生物。胶体二氧化硅,陶瓷粉末和生物成分的混合物通过冷冻(冻结凝胶化或冷冻浇铸)的不可逆的溶胶-凝胶转变,能够生产出低成本,多孔,无裂纹的生坯,其收缩率几乎为零,固定化了微生物安全地。将对在选定的冷冻和干燥条件下球形芽孢杆菌和酿酒酵母的生物菌的存活率,活性和储存能力进行初步研究。这些新生物分子的结构通过SEM显微照片,物理吸附和水银孔率法进行了表征

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