Broad-spectrum bacteriophage preparation for aquaculture and preparation method thereof
An aquaculture and bacteriophage technology, applied in the directions of bacteriophage, virus/phage, and botanical equipment and methods, can solve the problems of high purification requirements, production and application risks, etc., and achieve the effect of simple preparation method and safe use.
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Embodiment 1
[0042] A broad-spectrum phage preparation for aquaculture is prepared by fermenting phage strain NTHP01 with the preservation number CGMCC No. 9623 and using genetically engineered Escherichia coli DH5α as a host bacterium.
[0043] The preparation method of described broad-spectrum phage preparation for aquaculture, comprises the following steps:
[0044] 1) Add fresh bacterial liquid of Escherichia coli DH5α to nutrient broth medium and ferment at 37° C. for 3.5 hours to obtain host bacterial fermentation liquid.
[0045] 2) The phage strain NTHP01 and MgCl with the preservation number of CGMCC No.9623 2 The mother liquor is put into the fermentation broth of the host bacteria, so that the MgCl 2 The final concentration was 4mM, mixed and left to stand for 30min, and then multiplied and cultured to obtain a fermentation mixture; wherein, the multiplication and culture conditions were: the activation of Escherichia coli DH5α to OD when the phage strain NTHP01 was added 600 ...
Embodiment 2
[0048] A broad-spectrum phage preparation for aquaculture is prepared by fermenting phage strain NTHP01 with the preservation number CGMCC No. 9623 and using genetically engineered Escherichia coli DH5α as a host bacterium.
[0049] The preparation method of described broad-spectrum phage preparation for aquaculture, comprises the following steps:
[0050] 1) Add fresh bacterial liquid of Escherichia coli DH5α to nutrient broth medium and ferment at 37° C. for 3.5 hours to obtain host bacterial fermentation liquid.
[0051] 2) The phage strain NTHP01 and MgCl with the preservation number of CGMCC No.9623 2 The mother liquor is put into the fermentation broth of the host bacteria, so that the MgCl 2 The final concentration was 4mM, mixed and left to stand for 30min, and then multiplied and cultured to obtain a fermentation mixture; wherein, the multiplication and culture conditions were: the activation of Escherichia coli DH5α to OD when the phage strain NTHP01 was added 600 ...
Embodiment 3
[0056] A broad-spectrum phage preparation for aquaculture is prepared by fermenting phage strain NTHP01 with the preservation number CGMCC No. 9623 and using genetically engineered Escherichia coli DH5α as a host bacterium.
[0057] The preparation method of described broad-spectrum phage preparation for aquaculture, comprises the following steps:
[0058] 1) Add fresh bacterial liquid of Escherichia coli DH5α to nutrient broth medium and ferment at 37° C. for 3 hours to obtain host bacterial fermentation liquid.
[0059] 2) The phage strain NTHP01 and MgCl with the preservation number of CGMCC No.9623 2 The mother liquor is put into the fermentation broth of the host bacteria, so that the MgCl 2 The final concentration is 30mM, mixed and left to stand for 30min, and then multiplied and cultured to obtain a fermentation mixture; wherein, the multiplication and culture conditions are: the activation of Escherichia coli DH5α to OD when the phage strain NTHP01 is added 600 is 0...
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