Method for determining 6-gingerol content in processing adjuvant ginger juice
A determination method, the technology of gingerol, is applied in the field of determination of 6-gingerol content in ginger juice, which is a processing auxiliary material, and can solve the problems of complex and unfavorable sample detection, and achieve high precision, simple sample processing method, and reproducible good sex effect
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Embodiment 1
[0022] Method and Results
[0023] Preparation of sample and reference solution
[0024] Preparation of the test solution
[0025] Precisely draw 0.4mL of ginger juice, put it in a 25mL measuring bottle, add absolute ethanol to dissolve and set the volume to the mark, shake well, and filter to get ready.
[0026] Preparation of reference solution
[0027] Accurately weigh 5.20mg of 6-gingerol into a 25mL measuring bottle, add absolute ethanol to dissolve and make the volume up to the mark, shake well, then precisely draw 2mL into a 10mL measuring bottle, add absolute ethanol to make up to the mark, Shake well and serve.
[0028] Selection of measurement wavelength: Scan the 6-gingerol reference solution and ginger juice test solution at 200-400nm wavelength respectively, and the result is that both have maximum absorption at 281nm.
Embodiment 2
[0029] Embodiment 2 linear relationship investigation
[0030] Accurately weigh an appropriate amount of 6-gingerol reference substance, add methanol to prepare 1.226mg·mL -l Precisely draw 1, 5, 10, 15, 18, and 20 μL of the solution, respectively, and inject samples sequentially for detection. The detection conditions are chromatographic column: Phenomenex Gemini C18 (4.6mm×250mm, 5um); flow rate: 1.0mL / min; column Temperature: 25°C; mobile phase selection: acetonitrile: methanol: water (43:5:52); measurement wavelength: 280nm. Injection volume of reference substance (mg·mL -l ) is the abscissa, and the integral value of the peak area is the ordinate, draw a standard curve and regression processing, the results show that 6-gingerol is 1.226~24.52mg·mL -l The range has a good linear relationship, and the regression equation is y=578.88x+91.297, r = = 0.9999. See figure 1 Standard Curve Chart. The content determination of 6-gingerol in the ginger juice of embodiment 3
Embodiment 3
[0030] Accurately weigh an appropriate amount of 6-gingerol reference substance, add methanol to prepare 1.226mg·mL -l Precisely draw 1, 5, 10, 15, 18, and 20 μL of the solution, respectively, and inject samples sequentially for detection. The detection conditions are chromatographic column: Phenomenex Gemini C18 (4.6mm×250mm, 5um); flow rate: 1.0mL / min; column Temperature: 25°C; mobile phase selection: acetonitrile: methanol: water (43:5:52); measurement wavelength: 280nm. Injection volume of reference substance (mg·mL -l ) is the abscissa, and the integral value of the peak area is the ordinate, draw a standard curve and regression processing, the results show that 6-gingerol is 1.226~24.52mg·mL -l The range has a good linear relationship, and the regression equation is y=578.88x+91.297, r = = 0.9999. See figure 1 Standard Curve Chart. The content determination of 6-gingerol in the ginger juice of embodiment 3
[0031] Taking 6-gingerol as an index component, the conte...
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