Preparation of phellinus igniarius sporocarp phenolic active substance and application of phellinus igniarius sporocarp phenolic active substance in regulation of intestinal flora and uric acid metabolism
An active substance, the technology of Sanghuangzi, which is applied in the direction of drug combination, food science, and resistance to vector-borne diseases, etc., can solve the problems of mixed functional components, low extraction rate and insufficient extraction of polyphenol active substances, and achieve enhanced The excretion of uric acid, the preparation method is simple and efficient, and the effect of reducing serum uric acid
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Embodiment 1
[0028] Get 100g of poplar Phellinus (Sanghuangporus vaninii) fruit body 100g of cultivation age 3 years, pulverize after oven dry and cross 40 mesh sieves, the fruit body powder that obtains is added the water of 5 times of amount to soak overnight, add acetone-ethanol mixture, make acetone: The volume ratio of ethanol:water is 10:80:10. After stirring evenly, the multi-frequency ultrasonic device is used for extraction. The multi-frequency ultrasonic device is set to: ultrasonic power 500W, extraction temperature 30 ℃; ultrasonic frequency 40KHz and 80KHz are used alternately, 5min each time, a total of 20min. 5000r / min centrifugation, then add acetone-ethanol-water mixture (V 丙酮 : V 乙醇 : V 水 =10:80:10), after stirring evenly, the extraction was repeated once with a multi-frequency ultrasonic device, the supernatants of the two times were combined, and 6.98 g of acetone ethanol crude extract was obtained after concentration by rotary evaporation (extraction rate was 6.98%)....
Embodiment 2
[0035] Embodiment 2: Effect experiment of phenolic active substance of Phellinus linteus fruiting body
[0036] 1. Experimental steps
[0037] (1) Using gallic acid as the standard, the total phenolic content in each group of samples was determined by the Folin-phenol method; using rutin as the standard, the flavonoid content in each group of samples was determined by the sodium nitrite-aluminum nitrate method.
[0038] (2) Determination of xanthine oxidase inhibitory activity: take 0.6 mL of phosphate buffer solution (0.1 mol / L, pH=8.5), 0.2 mL of xanthine solution (2 mmol / L) and different solutions (3.0 mg / mL, DMSO Preparation) 0.1mL was vortexed in a 1.5mL centrifuge tube; then 0.2mL xanthine oxidase solution (0.1U / mL) was added and reacted in a water bath at 25°C for 30min; after completion, 0.2mL HCl solution (1.0mol / mL) was added L) Terminate the reaction. Using allopurinol as a positive control, the absorbance was measured at a wavelength of 290 nm. The formula for c...
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