Phellinus igniarius polysaccharide extract, preparation method and applications thereof, and skin external application agent containing Phellinus igniarius polysaccharide extract
A skin external preparation, the technology of Phellinus linteus polysaccharide, applied in the field of Phellinus linteus polysaccharide extract and its preparation, can solve the problems of low safety, poor anti-aging and anti-oxidative activities and the like
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Embodiment 1
[0041] Example 1 Preparation of Phellinus Phellinus Polysaccharide Extract
[0042] Step 1: Submerge 100g of Sanghuangzi powder (the particle size of Sanghuangzi powder is 60 mesh) with 1000ml of water, extract in boiling water for 1 hour, extract 3 times, separate solid-liquid after each extraction to obtain filtrate, combine the filtrate and concentrate To a minimum volume of 100ml, add 300ml of ethanol with a volume concentration of 95%, let stand at 4°C for 8 hours, centrifuge, collect the supernatant, and evaporate the ethanol to obtain a precipitate of 2.7g;
[0043] Step 2: After redissolving the precipitate with 100ml water, add 100ml 30% w / v trichloroacetic acid aqueous solution, deproteinize at 4°C for 3 hours, centrifuge, and neutralize the supernatant with 10% w / v NaOH aqueous solution until Neutral, dialyzed with running water for 2 days to obtain the liquid in the dialysis bag, which is concentrated to 50ml;
[0044] Step 3: Add 150mL of ethanol with a volume co...
Embodiment 2
[0045] Embodiment 2 Phellinus Phellinus Polysaccharide Extract Active Components Physicochemical Test
[0046] Determination of total sugar content
[0047] The standard glucose and the sample to be tested were dissolved in water. Take 0.2 mL of glucose standard solution or sample solution to be tested, add 0.4 mL of 5% phenol, shake, add 2.0 mL of concentrated sulfuric acid, shake, place at room temperature for 30 min, and measure the OD value at 490 nm with a blank tube as a control. Make a standard curve from the OD490 of each concentration of the standard solution against the glucose content, and calculate the total sugar content in the sample according to the standard curve.
[0048] Determination of acidic polysaccharide content
[0049] The standard glucuronic acid and the sample to be tested were dissolved in water. Take 0.4 mL of glucuronic acid standard solution or sample solution to be tested, put it in ice bath, add 2.4 mL of reagent A (0.0125 mol / L sodium tetra...
Embodiment 3
[0053] Example 3 Research on the free radical scavenging effect of Phellinus polysaccharide extract
[0054] 1,1-Diphenyl-2-trinitrophenylhydrazine (DPPH) is a stable nitrogen-centered organic radical. The DPPH method was proposed in 1958 and is widely used in the quantitative determination of the anti-aging ability of biological samples, classified substances and food. This method is based on the fact that the DPPH radical has a single electron and has a strong absorption at 517nm, and its alcohol solution is purple. When there is a free radical scavenger, its absorption gradually disappears due to pairing with its single electron, and its fading degree has a quantitative relationship with the number of electrons it accepts. Therefore, a spectrophotometer can be used for rapid quantitative analysis to detect free radical scavenging. , so as to evaluate the anti-aging ability of the samples.
[0055] Take the Phellinus polysaccharide extract prepared in Example 1 and use dei...
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