The invention discloses a method for separating deoxynucleotide from salmon seminal fluid, which comprises the following separation steps: S1, preparing fresh or frozen salmon seminal fluid tissue bodies, putting the tissue bodies into a glass
homogenizer, adding a quantitative
cell lysis buffer solution, homogenizing until no tissue clots exist, then transferring the tissue bodies into a centrifugal tube, adding
protease K, uniformly mixing the tissue bodies and the
protease K, and carrying out
centrifugal separation; and S2, performing water bath in a constant-temperature water bath kettle for a
fixed time, and intermittently oscillating the centrifugal tube for a plurality of times to preliminarily obtain mixed liquid. According to the method, the deoxynucleotide component in the salmon
semen can be separated through the steps of oscillation, separation and the like by adopting a
dissolution and
centrifugal separation purification mode and adding quantitative
protease K, a
TE buffer solution, absolute ethyl
alcohol and the like, so that the deoxynucleotide separated by the
separation method is relatively high in purity and relatively high in purity. Compared with the traditional
separation method, the method is simpler and clearer, is very convenient for personnel to operate, can efficiently and simply complete the separation work of deoxynucleotide, and has higher popularization value.