Moreover, a freeze-drying method was investigated in order to improve the stability of the cucurbitacin SLN suspension.
为了进一步提高葫芦素SLN的稳定性，对其混悬液的冷冻干燥工艺进行了初步的探讨。
The paper mainly describes the principle and advantage of freeze-drying. In addition, the paper introduces the influencing factors to freeze-drying method.
本文介绍了菌种冷冻干燥保藏方法的原理和优点，同时详细介绍了菌种冷冻干燥保藏方法的影响因素。
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）。
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