Pjrocess Of Tea Saponin Extracted From Teaseed Meal

Tea seed after mechanical compression method grease, the rest of the industrialwaste for the lump of tea seed meal, on the environment caused a certain amount ofpressure, a lot of tea saponin in tea seed meal, protein and other plant resources, but mostof the tea seed meal is not good treatment resulted in a tremendous waste of resources.The main subject of recycling the process of tea saponin from tea seed meal, and itsamplification test, the use of membrane technology for processing of tea saponin solution,and further refined to purity on the basis of the pilot pure well, the color of tea saponin isalso well.This subject take the tea seed meal preparation from tea saponin to use water as theextraction solvent, the optimum extraction conditions in the ratio of solid to liquid underthe conditions of1:4.5, pH9.5,60°C, extraction of4.5h. In this condition theverification test, the proceeds of tea saponin extract is18.45%, accounting for95.4percent of the tea saponin content in the material, the highest extraction rate.This topic has been optimized to confirm the selection aperture purify the teasaponin solution for350nm microfiltration membrane; pH6.0conditions, theconcentration factor of4.82times; the highest purity of the tea saponin, reached75.21%,the loss rate of9.13%tea saponin, solid content14.76%, then the filtrate clear andtransparent, it can reach the miscellaneous results. MWCO to concentrate for400Dalnanofiltration membrane microfiltration membrane impurity materials, can retain87.4%of the tea saponin, solid content retention rate of72.5%, which makes most of the teasaponin trapped, while the other ingredients in the solution to exclude outside theconcentrated solution to achieve the effect of tea saponin solution concentrated.This subject by the nanofiltration membrane solution gradient pH precipitationexperiments confirm, tea saponin solution under the conditions of pH2.5thesedimentation rate of the highest, about85.3%of the total amount of tea saponin. Teasaponin pulp after freeze-drying can be crystal of high purity of color is lighter crude teasaponin, as well as part of the tea saponin is present in the tea saponin supernatant wasprecipitated, after precipitation of the supernatant was concentrated to get a higherconcentration of tea saponin solution. Tea saponin supernatant can be concentrated teasaponin goods as low purity solution can also repeat the above process to get the teasaponin slurry of the precipitate.The use of acetone and bleaching refining tea saponin can be further refined teasaponin obtained solid, so that the tea saponin crystal pigments and other impuritiesstripped crude tea saponin can be obtained after5h acetone decolorization purity of97%of tea saponin pure, it can get high-purity, color and good tea saponin, acetone recyclable.The total mass of refined tea saponin accounted for76.5%of the quality of crude teasaponin throughout the purification process of tea saponin yield of85.25%.