Process for extraction of proanthocyanidins from botanical mater

Details Process for extraction of proanthocyanidins from botanical mater Process for extraction of proanthocyanidins from botanical mater

1997-05-22

1999-10-19

Lilling, Herbert J.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Conjugate or complex

A01N 6500

Patent

active

059685174

ABSTRACT:
A method for extraction and isolation of proanthocyanidins from biological material. The method includes the steps of hot water extraction of the material after comminution using deoxygenated water, separation of the solids from the liquor, concentration of liquor into a concentrated solution and waste streams,and drying the concentrated solution to a solid product. The hot water can be recycled. The residue results in a usable by-product and the tannins can be extracted from the tannin-rich waste stream. The most preferred biological material is bark from Pinus radiata trees which are 15 years old, the bark most optionally coming from the upper portion of the tree.

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