The Study Of Microcapsule Technology For Aloe Polysaccharide Extraction

Aloe, a member of the lily(liliaceae) family, has been used medicinally for thousands of years. Aloe polysaccharides are the subjective ingredient of aloe. Aloe polysaccharide have immune boosting, antitumour, anti-radiation properties. It limits the development of aloe industry that aloe polysaccharides extract by traditional method. In this study, we utilize microcapsule technology to extract aloe polysaccharide. Aloe polysaccharide can be wrapped in the microcapsule because of the difference in molecule size between aloe polysaccharides and aloe lectins. The experiment includes establishing technical pattern of microcapsule and utilizing it to extract polysaccharides from aloe juice.Firstly, aloe polysaccharides and aloe lectins are extracted from aloe which be used as a model product. Small size narrow distribution gel beads with a smooth surface and good sphericity were successfully obtainedSecondly, the factors in experiment such as alginate, calcium and time were studied. Results showed aloe lectins infiltrate over 95% and aloe polysaccharides infiltrate below 20% when alginate is greater than 2%, calcium is greater than 1.5% and time is greater than 30 minute. Aloe polysaccharides infiltrate a lot when calcium alginate microcapsule immersed over 24 hours. Therefore, we make alginate-chitosan-alginate(ACA)microcapsule and compare aloe polysaccharides and aloe lectins infiltration when calcium alginate and ACA microcapsule immersed over 24 hours. Results showed that aloe polysaccharides and aloe lectins infiltration decreased with ACA microcapsule . Calcium alginate microcapsule may extract aloe polysaccharides when alginate at 2-3%, calcium at 1.5-2% and time is greater than 30 minutes. ACA microcapsule can slow aloe polysaccharides infiltration.Lastly, microcapsule model were applied for extracting aloe polysaccharides from aloe juice. The aloe polysaccharides infiltrate at 10.7%. Therefore, the microcapsule model can applied for aloe polysaccharides extraction.