P ines G ift .
For Your Health and Nutritional Needs Life Plus products P. G. C . The test confirms that the leading pine bark-based product is in the mediocre grape seed extract category both for poor antioxidant performance and lack of purity . Preparation of all samples was carried out simultaneously under identical conditions. Dr. Jack Masquelier invented the pine bark and grape seed extraction process around 1950. But, independent comparative testing demonstrates that the initial qualifying research conducted on the authentic products may not be automatically transferred to another commercial product.