何当奇
第8楼2007/10/11
The freeze dry method is freezing the concentrated solution into a solid mass, by taking advantage of the elevating character of ice under low temperature and reduced pressure, the frozen mass dehydrates at low temperature to become dried powder. Because an object gets dry at high vacuum and low temperature, the method is very suitable for thermolabile substances, but it requires a comparatively longer time and hence used more energy to dry; and some active constituents maybe lost during the longer drying time, and the concentrated powder absorbed moisture easily and tend to get lumpy. Hence, it is not a suitable drying process for large quantity production
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何当奇
第9楼2007/10/11
Offering recombinant human superoxide dismutase (rh-sod), a
kind of protease which widely exists in the majority of oxygenic organism, it main function is to eliminate the superoxidized radical oxidated substance and effete gene additionally produced by the organism and adjust the oxygenation metaboly and anti-aging.
* Specification:
- Physical appearance: white lyophilized (freeze-dried) powder.
- Purity by hplc: 90% minimum
- Activity unit: 6000 iu per mg protein (mccord test).
- Loss on drying: 5% maximum
- Bacterial population: 100 entries per gram minimum (freeze-dry powder, no pathogenic bacteria)
- ph value: 7.4
acai-spec-sheet