Compound salicylic acid lotion for treating keratinized tinea pedis and preparation method thereof
A technology of salicylic acid lotion and tinea pedis, which is applied in the field of medicine, can solve the problems of poor transdermal absorption and poor curative effect, and achieve the effects of improving bioavailability, helping skin tissue repair, and increasing resistance
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Embodiment 1-3
[0030] Embodiment 1-3: Preparation of Centella asiatica extract.
[0031] Table 1. Process parameters and content results of the preparation process of Centella asiatica extract
[0032]
[0033] Prepare the Centella asiatica extract according to the processing parameters in Table 1, and the specific process is as follows:
[0034] a) sieving the dried centella asiatica powder after crushing to obtain centella asiatica powder;
[0035] b) Extract the Centella asiatica powder obtained in step a) with ethanol aqueous solution for 3 times, each extraction time is the same, and filter after extraction to obtain the filtrate;
[0036] c) adding activated alumina and activated carbon to the filtrate obtained in step b), heating and stirring until the color of the liquid disappears and then filtering to obtain a decolorized filtrate;
[0037] d) concentrating the decolorized filtrate obtained in step c) under reduced pressure to obtain Centella asiatica extract.
[0038] Accord...
Embodiment 4-6
[0039] Embodiment 4-6: the preparation of compound salicylic acid lotion.
[0040] Table 2. Components and dosage of compound salicylic acid lotion
[0041]
[0042]
[0043] Prepare compound salicylic acid lotion according to the formula in table 2, and concrete process is as follows:
[0044] 1) Prepare acid solution: weigh salicylic acid, benzoic acid and ethanol, and dissolve salicylic acid and benzoic acid in ethanol to obtain acid solution;
[0045] 2) Prepare phenol solution: weigh resorcinol, phenol and penetration enhancer, and dissolve resorcinol and phenol in the penetration enhancer to obtain phenol solution;
[0046] 3) Using a magnetic stirring device, first mix the acid solution obtained in step 1) and the phenol solution obtained in step 2) uniformly, and then add an appropriate amount of pure water, pre-weighed stabilizer and centella asiatica extract Liquid, after stopping stirring, add water constant volume, obtain the compound salicylic acid lotion th...
experiment example 1
[0047] Experimental Example 1: Skin irritation test of compound salicylic acid lotion.
[0048] Adopt the compound salicylic acid lotion obtained in embodiment 4-6 to carry out skin irritation test.
[0049] The specific experimental process is as follows: select a rabbit with a body weight of 2.0-2.5 kg as the experimental animal, and 24 hours before the test, use scissors and an electric shaver to shave an area on each side of the rabbit's back spine, with a size of about 10 cm × 5 cm. Among them, the upper part is the intact skin test area, the lower part is the damaged skin test area, and the test drug or positive control substance is applied on the left side (product name: compound salicylic acid tincture, batch number: 151101, manufacturer: Jiangsu Lingbao Pharmaceutical Co., Ltd. Co., Ltd.), the application amount is 1mL, and the right side is the blank control; the skin on the left and right sides of the damaged skin test area is cut with a scalpel before administratio...
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