Method for extracting pleurotus eryngii polysaccharide from pleurotus eryngii leftover by using subcritical water
A technology for the leftovers of Pleurotus eryngii and the polysaccharide of Pleurotus eryngii is applied in the field of extracting the polysaccharide of Pleurotus eryngii and using subcritical water to extract the polysaccharide of Pleurotus eryngii. The complex components of the polysaccharide extract can achieve the effects of good permeability and solubility, low production cost, and less loss of active ingredients and active substances.
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Embodiment 1
[0025] Grind the dried Pleurotus eryngii leftovers into 40 mesh particles, take 100g and put it into a subcritical water extraction kettle, replace the oxygen in the extraction kettle with nitrogen, and input 1000mL of deoxidized deionized water at 180°C into the extraction kettle through a pressure pump. The pressure of the extraction kettle is 5MPa, heat preservation and extraction for 20min, after filtration, cooling, and centrifugation, the subcritical water extract is ultrafiltered with a ceramic membrane with a molecular weight cut-off of 100kD, and the operating pressure is 0.5MPa. The membrane is subjected to ultrafiltration, the operating pressure is 0.1MPa, and 50ml of the intercepted concentrated solution is obtained, which is put on the pretreated D301 anion exchange resin column, and 300ml of deionized water is added for elution, and the polysaccharide eluate is collected, concentrated under reduced pressure and dried in vacuo , to obtain 6.8g Pleurotus eryngii pol...
Embodiment 3
[0032] Grind the dried Pleurotus eryngii leftovers into 60-mesh particles, take 100g and put it into a subcritical water extraction kettle, replace the oxygen in the extraction kettle with nitrogen, and input 1000ml of deoxidized deionized water at 160°C into the extraction kettle through a pressure pump. The pressure of the extraction kettle is 4MPa, after heat preservation and extraction for 30min, after filtration, cooling, and centrifugation, the subcritical water extract is ultrafiltered with a hollow fiber membrane with a molecular weight cut-off of 300kD, and the operating pressure is 0.1MPa. The fiber membrane is subjected to ultrafiltration, the operating pressure is 0.1MPa, and 50ml of the intercepted concentrated solution is obtained, which is put on a pretreated 201×7 anion exchange resin column, and 200ml of deionized water is added for eluting, and the polysaccharide eluate is collected, concentrated under reduced pressure and After vacuum drying, 6.6g Pleurotus e...
Embodiment 4
[0034] Select fresh and clean Pleurotus eryngii leftovers, cut into thin slices of about 2mm, take 1000g and put it into a subcritical water extraction kettle, replace the oxygen in the extraction kettle with nitrogen, and input 5000ml of 140°C deoxidized deionized water into extraction through a pressure pump In the kettle, the pressure of the extraction kettle is 3MPa. After heat preservation and extraction for 30min, after filtration, cooling and centrifugation, the subcritical water extract is ultrafiltered with a ceramic membrane with a molecular weight cut-off of 300kD, and the operating pressure is 0.4MPa. The hollow fiber membrane is subjected to ultrafiltration, the operating pressure is 0.1MPa, and 50ml of intercepted concentrated solution is obtained, and the pretreated D318 anion exchange resin column is added, and 400ml of deionized water is added for elution, and the polysaccharide eluate is collected, concentrated under reduced pressure and decompressed. After fr...
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