Novel process for purifying solanesol based on chemically modified diatomite

Abstract

The invention discloses a novel process for purifying solanesol based on chemically modified diatomite, which comprises the following steps of: (1) grinding 3.0 g of diatomite into fine powder with the particle size of 500-800 meshes, adding 8-12ml of any strong acid except hydrofluoric acid into the fine powder to form a solution, filling the solution into a closed container I, putting the closed container I into a constant-temperature water bath, and heating the closed container I to 60-80 DEG C; the preparation method comprises the following steps: adding diatomite into a reaction kettle, shaking at normal temperature for 45-55 minutes, washing the shaken solution to be neutral, filtering by a screen with the aperture of 20-25 microns, and drying the obtained filtrate to constant weight to obtain modified diatomite; (2) 0.3-0.8 g of the modified diatomite obtained in the step (1) is added into 50 ml of an extract containing solanesol to form a mixed solution, the mixed solution is contained in a third closed container, the third closed container is placed in a constant-temperature water bath, oscillation is conducted for 45-55 min at the normal temperature, the oscillated mixed solution is filtered, filter residues are obtained, and the aperture of a mesh screen for filtering is 10-15 microns; (3) washing the filter residues with washing liquor to obtain solanesol, wherein the washing liquor is a solanesol-soluble solution; the process can greatly reduce the separation cost.

Description

technical field [0001] The invention relates to a separation and purification technology of solanesol in tobacco extract, a new process for purifying solanesol based on chemically modified diatomite. Background technique [0002] Diatomaceous earth is a biogenic siliceous sedimentary rock composed mainly of microalgae such as diatoms tens of thousands of years ago. These diatoms are single-celled microalgae, usually only 10 to tens of microns in shape. The density of diatomite is 1.9-2.35 g / cm3, the bulk density is 0.34-0.56 g / cm3, the specific surface area is 10-60 m2 / g, the pore volume is 0.46-0.98 cm3 / g, and the melting point is 1650°C-1750°C . The special porous structure of diatomaceous earth can be observed under the electron microscope (such as figure 1 shown). The micropores of its shell are generally tens of nanometers to several micrometers, with loose texture, high porosity and strong adsorption capacity. [0003] Diatomaceous earth is chemically stable and w...

AI Technical Summary

Problems solved by technology

The separation of natural products mostly uses macroporous resins as the stationary phase, which has high preparation costs, complicated processing, and unsuitable waste disposal, which will cause certain environmental pollution problems

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