Is the pine bark extracted similar to pycnogenol?
The extraction process is different from the process used by the Pycnogenol producers, Horphag Ltd. It involves isolating, drying and powdering grape seeds; extracting the proanthocyanidins using a combination of pressurized hot water, butanol and acetone; concentrating and drying the compounds. A spectrum of red grape varieties probably is used for extraction. Remember that it is the extraction process that is selective for flavonoid and it can be used on material from a variety of plant sources (pine bark, bilberries, citrus rinds).
