Proanthocyanidins: Biological Activities Associated with Human Health

Proanthocyanidins: Biological Activities Associated with Human Health

Proanthocyanidins, also called condensed tannins, are oligomers and polymers of monomeric flavans linked through specific single (B linkages) and double (A linkages) bonds. These secondary plant metabolites have substantial antioxidant activity. They are prevalent in some foods and dietary supplements including several berries, red grapes and their wines, and seeds, baking chocolate, cinnamon, ...

Occurrence and biological significance of proanthocyanidins in the American diet.

Dietary intake of proanthocyanidins (PAs) has been largely unknown because of the lack of reliable values for their content in foods. Recent development of an analytical method for PAs has allowed the quantification of individual oligomers and polymers. This method has been employed to analyze food samples collected under the USDA National Food and Nutrition Analysis Program. A database of the ...

Human Health Risks Associated with Water Reuse

Rubus fruticosus L.: constituents, biological activities and health related uses.

Rubus fruticosus L. is a shrub famous for its fruit called blackberry fruit or more commonly blackberry. The fruit has medicinal, cosmetic and nutritive value. It is a concentrated source of valuable nutrients, as well as bioactive constituents of therapeutic interest highlighting its importance as a functional food. Besides use as a fresh fruit, it is also used as ingredient in cooked dishes, ...

Multiple biological activities of homogeneous human alpha interferon.

To identify the active molecule in human alpha interferon preparations, we performed several studies, using both partially purified interferon and homogeneous interferon. Our results indicated that there is little difference between the partially purified and the homogeneous interferon preparations in terms of antiviral activity, inhibition of deoxyribonucleic acid synthesis in human neoplastic...