Rhizoma fagopyri dibotryis extract, preparation methods and applications of rhizoma fagopyri dibotryis extract and skin external-use preparation containing rhizoma fagopyri dibotryis extract
A skin external preparation, the technology of golden buckwheat, applied in the field of golden buckwheat extract, preparation, application and skin external preparations containing it, can solve the problems of poor anti-aging and whitening effect and low safety, and achieve good market prospects Effect
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Embodiment 1
[0037] Embodiment 1 is that the ethanol aqueous solution of 50% is extraction solvent (method 1) with volume concentration
[0038] 20 g of golden buckwheat dry powder (the particle size of golden buckwheat powder is 20 orders), under room temperature (25 ℃) is 50% ethanol aqueous solution 200ml ultrasonic extraction 2 times, each time 30min (power 500W), get filtrate and merge, reduce Press (50° C.) to recover the solvent to dryness, take an appropriate amount of extract, add DMSO (dimethyl sulfoxide) to prepare a 0.05 mg / ml solution for later use, and measure its free radical scavenging effect, and its free radical scavenging rate is 7%.
Embodiment 2
[0039] Embodiment 2 is that the ethanol aqueous solution of 60% is extraction solvent (method 1) with volume concentration
[0040] 20 g of golden buckwheat dry powder (the particle size of golden buckwheat powder is 30 orders), under room temperature (25 ℃), be 60% ethanol aqueous solution 200ml ultrasonic extraction 2 times, each 30min (power 500W), take filtrate and merge, reduce Press (50° C.) to recover the solvent to dryness, take an appropriate amount of extract, add DMSO (dimethyl sulfoxide) to prepare a 0.05 mg / ml solution for later use, and measure its free radical scavenging effect, and its free radical scavenging rate is 23%.
Embodiment 3
[0041] Embodiment 3 is that the ethanol aqueous solution of 70% is extraction solvent (method 1) with volume concentration
[0042] 20 g of golden buckwheat dry powder (the particle size of golden buckwheat powder is 40 orders), under room temperature (25 ℃), be 70% ethanol aqueous solution 200ml ultrasonic extraction 2 times, each time 30min (power 500W), get filtrate and merge, reduce Press (50° C.) to recover the solvent to dryness, take an appropriate amount of extract, add DMSO (dimethyl sulfoxide) to prepare a 0.05 mg / ml solution for later use, and measure its free radical scavenging effect, and its free radical scavenging rate is 51%.
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