Pretreatment of citrus peel. The dried citrus peel is first rehydrated to remove sugars, acids, pigments and some bitter substances that affect the quality and flavor of pectin. Soak in warm water at 50 ° C, rinse for 2-3 hours to prevent the hydrolysis of pectin by pectinase. Put the soaked citrus peel in boiling water and keep it for 3 to 5 minutes to prevent pectin loss. Disclaimer: Some articles on this website are transferred from the Internet. If third party legal rights are involved, please inform this website to deal with them. phone Medical Equipment Disposal,Syringes Needles Sizes,Disposable Syringe,Insulin Syringe FOSHAN PHARMA CO., LTD. , https://www.fspharmaapi.com
Requirements for exchange resin. Using sulfonated polyethylene resin. The resin must not be degraded at 100 ° C, not hydrolyzed under moderate acidity, and the resin can be used for a long time.
Extraction conditions. The pH value is 1.2 to 1.3, the temperature is 80 ° C, and the time is 1 hour.
Ethanol precipitation. The concentrated pectin was cooled to normal temperature and precipitated with ethanol to obtain solid pectin. The aggregation of ethanol on pectin requires the presence of an electrolyte to promote its complete precipitation.