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Freezing particulate materials - esp foodstuffs,in three-stage process
专利权人:
发明人:
申请号:
DE19702044123
公开号:
DE2044123(A1)
申请日:
1970.09.05
申请国别(地区):
德国
年份:
1972
代理人:
摘要:
Materials with identifiable smell, taste and colour esp. coffee or tea extracts can be frozen in three stages and their properties retained even after final freeze drying. In the first stage, material is cooled only to a temp. that, after slight reheating corresponds to the required properties of the material for the second stage. The material is then cooled until it is suitable for grinding and finally cooled to the required low temp. and freeze dried.
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