The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Stability of the Flavan-3-ols Epicatechin and Catechin and Related Dimeric Procyanidins Derived from Cocoa
Abstract
Cocoa flavanols and procyanidins possess wide-ranging biological activities. The present study investigated the stability of the cocoa monomers, (-)-epicatechin and (+)-catechin, and the dimers, epicatechin-(4beta-8)-epicatechin (Dimer B2) and epicatechin-(4beta- 6)-epicatechin (Dimer B5), in simulated gastric and intestinal juice and at different pH values. The dimers were less stable than the monomers at both acidic and alkaline pH. Incubation of Dimer B2 and Dimer B5 in simulated gastric juice (pH 1.8) or acidic pH resulted in degradation to epicatechin and isomerization to Dimer B5 and Dimer B2, respectively. When incubated in simulated intestinal juice or at alkaline pH, all four compounds degraded almost completely within several hours. These results suggest that the amount, and type, of flavanols and procyanidins in the gastrointestinal tract following the consumption of cocoa can be influenced by the stability of these compounds in both acidic and alkaline environments.
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Hammerstone, J. F., Lazarus, S. A., Mitchell, A. E., Rucker, R., & Schmitz, H. H. (1999) · Journal of Agricultural and Food Chemistry · doi:10.1021/jf980760h · Cited by 455
Self-citationAdamson, G. E., Lazarus, S. A., Mitchell, A. E., Prior, R. L., Cao, G., Jacobs, P. H., Kremers, B. G., Hammerstone, J. F., Rucker, R. B., Ritter, K. A., et al. (1999) · Journal of Agricultural and Food Chemistry · doi:10.1021/jf990317m · Cited by 404
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Biological Activities of Polyphenols from Grapes
Xia, E.-Q., Deng, G.-F., Guo, Y.-J., & Li, H.-B. (2010) · International Journal of Molecular Sciences · doi:10.3390/ijms11020622 · Cited by 1,063
Gu, L., Kelm, M., Hammerstone, J. F., Beecher, G., Cunningham, D., Vannozzi, S., & Prior, R. L. (2002) · Journal of Agricultural and Food Chemistry · doi:10.1021/jf020214v · Cited by 417
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Metadata
- Authors
- Zhu, Q. Y., Holt, R. R., Lazarus, S. A., Ensunsa, J. L., Hammerstone, J. F., Schmitz, H. H., & Keen, C. L.
- Venue
- Journal of Agricultural and Food Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-02-08
- Volume
- 50
- Issue
- 6
- Pages
- 1700-1705
- ISSN
- 0021-8561 (ISSN-L)
- 1520-5118
- OpenAlex
- W2061097462
- Cited by
- 194
- References
- 2
- FWCI
- 12.50
- Type
- journal article
- Language
- en
- Open access
- closed
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