in the thesis, porous calcium alginate(ca) membranes were prepared using freeze-drying method and ca-based ipn membranes were prepared by stepwise ipn technique.
本研究工作结合目前的多孔材料制备技术,采用冷冻干燥法制备海藻酸钙多孔膜材料;
finally, vacuum freeze-drying method was applied to freezing-dry fiddleheads.
最后,采用真空冷冻干燥技术进行冷冻干燥蕨菜加工的技术研究。
the results indicated: freeze-drying method could do the longest preservation (at least 15 years) while beef broth agar plate method did the shortest (only 2 to 3 months).
结果表明:冷冻干燥法保藏菌种时间最长(本实验室已保存15年);肉浸汤琼脂平板法保藏菌种时间最短(2~3月)。