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In addition to beauty, royal jelly can also greatly relieve liver damage caused by anti-tumor drugs!

 Time of Update: 2022-04-23

As shown in Figures 2(A) and 2(B), compared with the control group, the body weight and liver body index of the rats in the HDU and 2HDU groups were significantly decreased (p < 0.
Determination of residues of streptomycin, dihydrostreptomycin and kanamycin in milk powder, milk, puffer fish, eel and royal jelly

 Time of Update: 2021-11-05

>>Figure 3-2 Multiple reaction monitoring (MRM) chromatograms of streptomycin, dihydrostreptomycin and kanamycin>Related links: Determination of residual amounts of streptomycin, dihydrostreptomycin and kanamycin in milk powder, milk, puffer fish, eel and royal jelly, sample pretreatment> > >>
Determination of residual amounts of streptomycin, dihydrostreptomycin and kanamycin in milk powder, milk, puffer fish, eel and royal jelly

 Time of Update: 2021-11-05

Table 3-10 The effect of different concentrations of sodium heptane sulfonate as a constant volume solution on the resultsAs a weak cation exchange column, the carboxyl column needs to be eluted under acidic conditions.
Determination of residues of streptomycin, dihydrostreptomycin and kanamycin in milk powder, milk, puffer fish, eel and royal jelly

 Time of Update: 2021-11-05

01g), were placed in 100mL stoppered centrifuge tube, add an appropriate amount of a mixed standard solution, extracting the remaining purification steps described above is completed, made streptomycin, dihydrostreptomycin streptavidin Su and kanamycin content are 5.
, dihydrostreptomycin and kanamycin in milk powder, milk, puffer fish, eel and royal jelly

 Time of Update: 2021-11-05

The average recovery rate and relative standard deviation are shown in Table 3-13 .
, dihydrostreptomycin and kanamycin in milk powder, milk, puffer fish, eel and royal jelly

 Time of Update: 2021-11-05

Formic acid, concentrated phosphoric acid, dipotassium hydrogen phosphate (K 2 HPO 4 ), trichloroacetic acid (C 2 HC1 3 O 2 ), sodium heptane sulfonate (C 4 H 15 NaO 3 ·SH 2 O): pure superior grade .
residues in milk powder, milk, puffer fish, eel and royal jelly

 Time of Update: 2021-11-05

Table 3-12 Linear range, linear equation and correlation coefficient of streptomycin, dihydrostreptomycin and kanamycinWhen the milk sample of streptomycin, dihydrostreptomycin and kanamycin is added at 10.
, dihydrostreptomycin and kanamycin in milk powder, milk, puffer fish, eel and royal jelly

 Time of Update: 2021-11-05

Use negative milk powder samples, add the same amount of standard, use the same method, use different pH and concentration of phosphate solutions for conditional experiments, the experimental data are shown in Table 3-6 .
Linear range and lower limit of determination of 9 nitroimidazole residues in royal jelly and freeze-dried powder

 Time of Update: 2021-10-11

>Table 16-20 Linear relationship of nitroimidazole drugs in lyophilized powder sample matrix >>Using royal jelly and lyophilized powder without nitroimidazoles drug
Determination of 9 Nitroimidazole Residues in Royal Jelly and Lyophilized Powder by Liquid Chromatography-Tandem Mass Spectrometry

 Time of Update: 2021-09-30

16. 2. 3. 1 Scope of application>Royal jelly and lyophilized powder suitable for the metronidazole
Determination of 9 Nitroimidazole Residues in Royal Jelly and Lyophilized Powder

 Time of Update: 2021-09-30

16. 2. 3. 6 Determination>(1) Liquid chromatography conditions>Chromatographic column: Waters Sunfire ODS
Selection of analysis conditions for determination of 9 nitroimidazole residues in royal jelly and freeze-dried powder

 Time of Update: 2021-09-30

) Pre-treatment selection and discussion>Royal jelly samples contain a large amount of uniform colloids of protein. To extract antibiotics and target compounds from royal jelly, the colloidal state must
Determination of linear range and lower limit of 8 macrolides and lincosamide residues in royal jelly and royal jelly freeze-dried powder

 Time of Update: 2021-09-20

Table 6-25 Linear equations and correlation coefficients of 8 antibioticsUnder the operating conditions of this method, when the added level of 8 antibiotics is in the range of 2.
Applicability of the method for determination of 8 macrolides and lincosamide residues in royal jelly and royal jelly freeze-dried powder

 Time of Update: 2021-09-20

. 0μg/kg), 2 LOD (4. 0μg/kg), 4 LOD (8. 0ug/kg), and 10 LOD (20. 0μg/kg). , Freeze-dried powder in 1 LOD ( lincomycin ,
Determination of 8 kinds of macrolides and lincosamide residues in royal jelly and royal jelly freeze-dried powder

 Time of Update: 2021-09-20

The sample solution should be lincomycin, erythromycin , tilmicosin , tylosin , clindamycin , spiramycin , kititamycin and The response value of josamycin is within the linear range determined by the instrument .
Determination of eight macrolides and lincosamide residues in royal jelly and royal jelly freeze

 Time of Update: 2021-09-20

in sequence, and lincomycin and red were prepared according to the above extraction and purification steps. 2. 0ng/mL, 4. 0ng/mL, 10. 0ng/mL, 50. 0ng/mL and tilmicosin, spiramycin, tylosin and josamycin
Determination of 18 sulfonamide residues in royal jelly by liquid chromatography-tandem mass spectrometry (3)

 Time of Update: 2021-09-04

not exceed the repeatability limit (r). If the difference exceeds the repeatability limit (r), the test results should be discarded and the two single tests should be completed again. Determination
Determination of 18 sulfonamide residues in royal jelly. Liquid chromatography-tandem mass spectrometry (2)

 Time of Update: 2021-09-04

Table 2-11 Comparison of recovery rates of different pH extracts (%)Related Links: Determination of 18 Sulfa Residues in Royal Jelly Liquid Chromatography-Tandem Mass Spectrometry (1)
Determination of 18 sulfonamide residues in royal jelly by liquid chromatography-tandem mass spectrometry (1)

 Time of Update: 2021-09-04

2um filter membrane, the sample solution is measured by liquid chromatography-tandem mass spectrometer and quantified by internal standard method .

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