| Modern medical research shows Lycium Chinense has many pharmacologic activities, such as anti-oxidative, anti-aging, anti-tumor, immunity adjustment, anti-hangover, anti-hypertension and anti-radiation. What’s more, Lycium Chinense polysaccharides(LCP) are the main function ingredients of Lycium Chinense.Belonging to food and medicine in food processing and utilization, Lycium Chinense is often made into soft drink, Lycium Chinense wine, concentrated extract and other health-based foods. But if we add whole grain in food directly, it not Inly makes the utilization of Lycium Chinense polysaccharide not high, and maybe produce unpleasant astringency. In order to improve the development and utilization of Lycium Chinense, we need to study the extraction and preparation of Lycium Chinense polysaccharides firstly. We test the effect of the dissolution and separation of Lycium Chinense polysaccharides under different separation conditions, while we put separated Lycium Chinense polysaccharides into application to produce strengthen Lycium Chinense beverage products. In addition, we also have done a component test and analysis about Lycium Chinense residue which mostly come from processing currently. Lycium Chinense residue was made into dietary fiber products which have a good taste and a high value-added through experimental treatments and fine processing.In this study, the compenent of Lycium Chinense which provided by cooperative enterprise were analysed. The content of moisture in it was 82.7 g/100 g while the ash is 0.93 g/100 g, the protein, fatty, reducing sugars and cellulose in Lycium Chinense was 5.22 g/100 g,2.32 g/100 g,6.59 g/100 g and 1.19 g/100 g respectively, the reduced ascorbic acid was 17.6mg/100g.In this study, the water and alcohol extracts was tested in order to study the extracted effect of Lycium Chinense polysaccharide. The results showed that water was much better than ethanol in the extraction of LCP, thus we choose water as extract solvent. Through single-factor test we choose temperature, time and solid-liquid ratio as three single factors conduct the orthogonal experiment, It was found the best extraction conditions from the fructus lycii was heat reflux extraction with water, the temperature 90℃, time 2.5 hours, solid-liquid ratio 1:25, extracted three times. In addition, extraction rate was poor after two times, and considering the time and cost, we decided to extract for twice.Refined LCP had got from coarse LCP during our experiments and we determined the effective diameter of LCP by laser light scattering. The scattered light measurements were carried out at 532 nm wavelengths,30 dust cutoffs,90°measuring Angle,25 ℃ for 10 minutes, the effective diameter of the LCP was 249.5.0 nm.Experimental does a composition analysis and synthesis on residue remaining after the extraction of polysaccharide.The main component is a large number of insoluble dietary fiber (IDF) and a small amount of soluble dietary fiber (SDF). Through a certain drying condition, thinning processing and glial processing, Lycium Chinense resdue was made into dietary fiber capsules ultimately. The research indicated that Lycium Chinense fiber tastes good and is easy to swallow after dealing,and protein, fat or sugar could not been tested in the microcapsulation. |
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