Back to results
US 6,440,436 B1Granted
Process for preparing purified shilajit composition from native shilajit
AssigneesNatreon, Inc., Indian Herbs Research & Supply Company Ltd.
InventorShibnath Ghosal
Life of this patent
Estimating the term…
Abstract
A purified shilajit composition is provided herein from native shilajit. The composition has an abundance of bioactive components, particularly, at least 0.3%, preferably 0.4-1%, by weight, oxygenated dibenzo-α-pyrones and at least 60%, preferably 65-70%, by weight of fulvic acids of low-to-medium molecular weight ({overscore (M)}n of 700-2000) with an E4/E6 ratio of 8-10 at 465-665 nm, and whose 2% aqueous solution has a pH of ≧7. Personal care, pharmaceutical and nutritional use formulations of the purified shilajit composition also are described.
Claims9
A composition comprising:
- (a) at least 0.3% by weight of bioactive oxygenated dibenzo-α-pyrones (DBPs), or their esters;
- present as monomer, dimer and/or tetramers, including free and metal-ion conjugate forms thereof, and
- (b) fulvic acids of low-to-medium molecular weight, {overscore (M)}n 700-2000, having an E4/E6 absorption ratio of 8 to 10 at λ465/665 nm, which ensure the bioavailability of DBPs by acting as an efficient carrier for the DBPs, which is obtained by successive extractions of native shilajit with water and an organic solvent, which substantially retains bioactive free and metal-ion conjugate DBPs in the composition, followed by adjustment of the pH of the resultant residue to substantially remove polymeric quinones and humus, and humic acids from the composition.
Dependencies are inferred from the claim text.