Bioscience, Biotechnology, and Biochemistry
Online ISSN : 1347-6947
Print ISSN : 0916-8451
Organic Chemistry Regular Papers
High-Performance Liquid Chromatographic Purification of Oligomeric Procyanidins, Trimers up to Nonamers, Derived from the Bark of Jatoba (Hymenaea courbaril)
Katsunori SASAKIYasuko MATSUKURAKumiko SHIJIMAMika MIYAKEDaisuke FUJIWARAYutaka KONISHI
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2009 年 73 巻 6 号 p. 1274-1279

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Procyanidin oligomers with different degrees of polymerization (up to nonamers) were efficiently purified from the bark of Jatoba (Hymenaea courbaril) by using a recently developed chromatographic separation method. Purification relied on a hydrogen bonding interaction between phenolic hydroxyl groups of the procyanidins and polyethylene glycol (PEG)-coated resin in a packed column. The individual procyanidins were identified by using electrospray ionization mass spectrometry (ESI-MS) and verified by a thiolytic degradation analysis. Our results demonstrate that Jatoba bark contained a large amount of procyanidins from monomer to nonamers or higher polymers composed of only B-type linked units (flavan-3-ol units linked through C-4 to C-8 (or C-6)) of epicatechin (EC) without gallate esters.
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© 2009 by Japan Society for Bioscience, Biotechnology, and Agrochemistry
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