A kind of detection method of erythromycin residue in bacteria residue
A detection method, the technology of erythromycin, which is applied in the detection field of erythromycin residual potency in bacterial residues, can solve the problems of accurate detection of erythromycin residues in bacterial residues, etc., and achieve the effects of reducing influence and improving accuracy
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specific Embodiment approach 1
[0027] Specific embodiment one: the detection method of erythromycin residue in a kind of bacterial residue of the present embodiment, it is carried out according to the following steps:
[0028] 1. Sample preparation for the test product:
[0029] 1) Weigh the bacterium residue containing erythromycin, add extractant acetonitrile-Tris-CaCl 2 solution, vortexed for 45-60s, then assisted extraction in ultrasound for 20-30min, then centrifuged at 3500-4000rpm for 5-10min, took the supernatant, and collected the precipitate;
[0030] 2) Add extractant acetonitrile-Tris-CaCl to the precipitate collected in step 1) 2 solution, vortexed for 45-60s, then assisted extraction in ultrasound for 20-30min, then centrifuged at 3500-4000rpm for 5-10min, and took the supernatant;
[0031] 3) Combine the supernatants of step 1) and step 2), and put them in a water bath at 35°C for rotary evaporation to one-fifth of the volume of the supernatant to obtain an inorganic phase;
[0032] 4) Add...
specific Embodiment approach 2
[0041] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the pH of the dipotassium hydrogen phosphate solution is 8-10. Others are the same as the specific embodiment one.
specific Embodiment approach 3
[0042] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the residual amount of erythromycin in the fungus residue is 500~1000mg / kg. Others are the same as the specific embodiment one.
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