Purification process of shilajit from the raw shilajit that oozes out from the rock is a very important and vital procedure. This is done to ensure that any impurities and toxic substances in the raw shilajeet and removed as well as to enhance the concentration of vital components. There are several types of purification that are commonly used we will discuss 2 of it in detail.
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In the second method of purification of shilajit the raw shilajeet is subjected to light washings. This removes the impurities. Then neutral salts and citric acid is added in various proportions. This citric acid salt solution carries
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away the vital organo metallic compounds in shilajit. This is not removed during filtration or skimming process but is retained in final shilajit product.
Nowadays the purification process of shilajit has become more complex with series of steps. Advance chemical engineering techniques of vacuum filtration, freeze drying and osmosis are used to enhance the concentration of shilajit, organo –mineral compounds and fulvic acid.
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