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1.
公开(公告)号:US5223412A
公开(公告)日:1993-06-29
申请号:US658652
申请日:1991-02-21
CPC分类号: C12P21/02 , C07K14/21 , C07K14/27 , Y10S435/847 , Y10S435/874 , Y10S530/828
摘要: Microbially produced ice nucleator mixtures which include either cell-free ice nucleator particle mixtures and/or whole cell ice nucleator mixtures. These mixtures are produced in methods which comprises culturing a selected microorganism in a two step process at a first temperature in a first step and at a lower temperature in a second step. The mciroorganisms include Erwinia, Pseudomonas and Escherichia coil. These methods produce ice nucleator mixtures having increased concentrations of ice nucleating sites per given weight or volume of ice nucleator material.
摘要翻译: 微生物产生的冰核混合物,其包括无细胞的冰核子颗粒混合物和/或全细胞冰成核剂混合物。 这些混合物以包括在第一步骤的第一温度和第二步骤中的较低温度下以两步法培养所选择的微生物的方法生产。 矿物元素包括欧文氏菌,假单胞菌和大肠杆菌。 这些方法产生每个给定重量或体积的冰成核剂材料具有增加的冰成核位点浓度的冰成核剂混合物。