Human placenta extract, method for preparing the same and application
A technology of extract and human placenta, which is applied in the field of placenta extraction, preparation and application, can solve the problems of insufficient utilization, high cost, complicated process, etc., and achieve the effects of small damage, reducing wrinkles and avoiding immune reaction
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Embodiment 1
[0036] A preparation method of human placenta extract, comprising the following steps:
[0037] 1. Before the parturient gives birth, reach a preparation agreement with the parturient, collect and quickly freeze at the delivery site;
[0038] 2. Take the thawed placenta and wash away most of the blood clots in the placenta repeatedly with deionized water;
[0039] 3. Under the condition of 4℃-25℃, use surgical scissors to cut into 1cm 3 size;
[0040] 4. Under the condition of 4°C-25°C, take 1L of normal saline to soak and wash for 2-5min, and wash repeatedly for a total of 5-10 times. When the tissue block turns to flesh-colored, it means that it has been cleaned;
[0041] 5. Drain the washed tissue pieces with gauze, add 1L of extraction buffer solution, and pulverize with a homogenizer at 4°C-25°C (rotating speed is 8000rpm-12000rpm), and the mixture A obtained after crushing is in the form of porridge liquid; by weight, the extraction buffer solution contains 80-99 pa...
Embodiment 2
[0050] With the human placenta extract that obtains in embodiment 1, the active ingredient wherein is detected and analyzed:
[0051] Molecular weight detection: SDS-PAGE electrophoresis to detect the molecular weight of human placenta extract
[0052] The human placenta extract obtained in Example 1 was diluted 3 times with protein loading buffer, and then divided into two parts as parallel samples. SDS-PAGE protein electrophoresis was used to detect the molecular weight of each substance in the human placenta extract. For the test results, see figure 1 .
[0053] figure 1 Among them, M represents the protein maker, 1 and 2 respectively represent the parallel samples averaged into two; figure 1 The number on the left indicates the molecular weight of each protein marker. from figure 1 It can be seen from the figure that using the method of Example 1, the extracted human placenta extract contains a variety of human proteins, and the molecular weight of each protein is g...
Embodiment 3
[0064] With the human placenta extract obtained in embodiment 1, detect its effect of suppressing melanin secretion, concrete operation is as follows:
[0065] The human placenta extract was co-incubated with mouse melanoma cell B16, and the inhibitory effect of the placenta extract on melanin secretion of melanoma cells was tested. The results are shown in figure 2 shown.
[0066] figure 2 ABCD in represents the inhibition results of placental extracts in different amounts added at the same culture time, wherein,
[0067] A means culturing with 2ml serum medium with a mass concentration of 10% for 96 hours; B means culturing with 0.5ml placenta extract + 1.5ml serum-free medium for 96 hours; C means culturing with 1.0ml placenta extract + 1.0ml serum-free culture medium for 96 hours; D means culture with 1.5ml placenta extract + 0.5ml serum-free medium for 96 hours.
[0068] from figure 2 It can be seen that the human placenta extract obtained in Example 1 has a dose-g...
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