Preparation method of pogostemon cablin hydrolat and in-vitro antioxidant activity evaluation method of pogostemon cablin hydrolat
A technology of antioxidant activity and evaluation method, applied in the field of preparation of hand incense hydrosol, can solve the problem of lack of research on the evaluation of anti-oxidation of incense hydrosol, and achieve the effects of improving environmental odor, simple operation, and scavenging oxygen free radicals
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Embodiment 1
[0045] A preparation method of hand fragrance pure dew, comprising the following operations:
[0046] 1) Take fresh incense sticks, crush them into fragments of a certain volume, wash them, and drain the water;
[0047] 2) Place the drained incense in the distiller, add a certain volume of distilled water, turn on the circulating water, heat, gradually turn from low power to high power, and collect the distillate. Stop collecting when the weight of the incense is 0.8 to 1.5 times, and obtain the hand incense hydrosol, which is stored in a refrigerator at 4°C.
Embodiment 2
[0049] An in vitro antioxidant activity evaluation method of Zhixiang Hydrosol, comprising the following operations:
[0050] 1) According to the method of Example 1, hand fragrance hydrosol is prepared, and it is set as the experimental group;
[0051] 2) Set the DPPH free radical scavenging activity experiment as the in vitro antioxidant activity experiment, and set the vitamin C solution as the control group;
[0052] 3) In vitro antioxidant activity experiments were carried out on the experimental group and the control group respectively, and the specific experimental methods were as follows:
[0053] Accurately weigh 0.00491g DPPH, dissolve it with ethanol, dilute it into a 100ml volumetric flask, draw 2ml of sample solutions of different concentrations and place them in a 5ml centrifuge tube, add 2ml of DPPH solution, shake well, let stand for 30min, and measure at 517nm The absorbance value is denoted as A1;
[0054] Add the absorbance value of the DPPH solution mixture...
Embodiment 3
[0060] An in vitro antioxidant activity evaluation method of Zhixiang Hydrosol, comprising the following operations:
[0061] 1) According to the method of Example 1, hand fragrance hydrosol is prepared, and it is set as the experimental group;
[0062] 2) Set the reducing power test as the in vitro antioxidant activity test, set the vitamin C solution as the control group, set ethanol as the blank group, and operate synchronously;
[0063] 3) In vitro antioxidant activity experiments were carried out on the experimental group, control group and blank group respectively. The specific experimental methods are as follows:
[0064] Take 1ml of the sample and place it in a 10ml centrifuge tube, add 2.0ml of 0.2mol / LPH6.6 phosphate buffer solution and 2.0ml of potassium ferricyanide solution with a mass fraction of 1%, vortex and mix, then heat in a water bath at 50°C for 20min , ice-water bath for 5 minutes, let cool to room temperature, add 2.0ml of 10% trichloroacetic acid solu...
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