The herbal tea extract contains many impurities plant protein, plant hydrocolloids, starch, plant fiber, dextrin, such as Chinese medicine into the dye molecules. These impurities or the presence of macromolecules in a semi-dissolved form, conventional filtration methods (such as diatomaceous earth, plate and frame filter) can not be completely trapped impurities, although not visible precipitate within a short time, to achieve a temporary clarified, but good gloss, in within a certain period of time, due to a temperature change or charge, these impurities precipitated again to form the eye can see impurities, in turn causing cloudiness precipitate herbal medicine.
Membrane separation is a molecular level filtration, uniform pore size, the molecular weight of the material between the individual components of the size and structure of the separation principle to retain the active ingredients in the herbal tea, while effectively removing impurities, such as gums, protein molecules, tanning mass, fiber, medicine played a role of impurity in the purified, herbal tea played for clarifying filtration efficacy, herbal medicine is best clarification and filtration effect of filtering techniques.
Herbal ultrafiltration process: extraction of raw materials → → → formulation → coarse filter sterilizing membrane separation device → → filling.
Herbal membrane separation to clarify technical characteristics:
(1) Choose a strong separation, complete separation of the impurities, the clear filtrate, high transmittance;
(2) solid-liquid cross-flow operation in a unique manner, without adding a filter aid, to solve the problem of clogging of pollution;
(3) the purely physical processes, no chemical reaction, without changing the taste of the beverage;
(4) substituted and diatomaceous earth plate and frame filter, to save the cost of doing business;
(5) simple to operate, easy replacement of the filter material.
