Preparation method of ceramide
A technology of ceramide and ethanol, which is applied in the field of extraction of plant active ingredients, can solve problems such as not being suitable for large-scale production, and achieve the effects of increasing product added value, rapid separation, and simple methods
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Embodiment 1
[0032] A preparation method of ceramide, comprising the following preparation steps:
[0033] Step 1, take 5000g of konjac powder, add 90% ethanol with 5 times the mass of konjac powder, stir at room temperature for 2 hours to extract, extract twice, filter to obtain ethanol extract and filter residue, and set aside.
[0034] Step 2: Concentrate the ethanol extract for 3.5 hours at 47.5°C to obtain 147g of concentrated cream.
[0035] Step 3, take 100g of concentrated paste, add 106mL of 5% potassium hydroxide, stir at 20°C for 2 hours to obtain a stirred liquid, add petroleum ether with the same volume as the stirred liquid to the stirred liquid, and extract twice under normal temperature conditions, each The time of the second extraction was 2 hours. The petroleum ether phases after the two extractions were combined and concentrated at 42.5° C. for 2.5 hours to obtain 16.3 g of crude ceramide with a content of 49.3%.
[0036] Step 4, take 10 g of crude ceramide, add 30 ml o...
Embodiment 2
[0038] A preparation method of ceramide, comprising the following preparation steps:
[0039] Step 1, take 5000g konjac powder, add 95% ethanol with 3 times the mass of konjac powder, stir at room temperature for 3 hours to extract, extract twice, filter to obtain ethanol extract and filter residue, set aside.
[0040] Step 2, concentrate the ethanol extract at 45°C for 5 hours to obtain 165 g of concentrated paste.
[0041] Step 3, take 100g of the concentrated paste, add 101mL of 5% potassium hydroxide, stir at 35°C for 3 hours to obtain a stirred liquid, add petroleum ether with the same volume as the stirred liquid to the stirred liquid, and extract twice under normal temperature conditions, each The time of the second extraction was 3 hours. The petroleum ether phases after the two extractions were combined and concentrated at 40° C. for 3 hours to obtain 18.1 g of crude ceramide with a content of 46.9%.
[0042] Step 4, take 10 g of crude ceramide, add 30 ml of chlorofo...
Embodiment 3
[0044] A preparation method of ceramide, comprising the following preparation steps:
[0045] Step 1, take 5000g of konjac powder, add 99% ethanol with 5 times the mass of konjac powder, stir at room temperature for 5 hours to extract, extract twice, filter to obtain ethanol extract and filter residue, set aside.
[0046] Step 2, concentrate the ethanol extract at 50°C for 2 hours to obtain 167g of concentrated paste.
[0047] Step 3, take 100g of the concentrated paste, add 113mL of 5% potassium hydroxide, and stir at 50°C for 4 hours to obtain a stirred liquid. Add petroleum ether with the same volume as the stirred liquid to the stirred liquid, and extract twice under normal temperature conditions. The time of the second extraction was 1 hour. The petroleum ether phases after the two extractions were combined and concentrated at 40° C. for 3 hours to obtain 17.3 g of crude ceramide product with a content of 50.9% of crude ceramide.
[0048] Step 4, take 10g of crude ceramide...
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