Intestinal Metabolism of Two A-type Procyanidins Using the Pig Cecum Model: Detailed Structure Elucidation of Unknown Catabolites with Fourier Transform Mass Spectrometry (FTMS)
| Autor: | Hans-Ulrich Humpf, Anna Engemann, Sebastian Rzeppa, Florian Hübner |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Chromatography
Molecular Structure Cinnamtannin B1 Swine Catabolism Ether Trimer General Chemistry In Vitro Techniques Mass spectrometry Models Biological Mass Spectrometry Bioavailability Intestines chemistry.chemical_compound Biochemistry Proanthocyanidin chemistry Animals Proanthocyanidins Procyanidin A2 Intestinal Mucosa General Agricultural and Biological Sciences Cecum |
| Zdroj: | Journal of Agricultural and Food Chemistry. 60:749-757 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/jf203927g |
| Popis: | Procyanidins, as important secondary plant metabolites in fruits, berries, and beverages such as cacao and tea, are supposed to have positive health impacts, although their bioavailability is yet not clear. One important aspect for bioavailability is intestinal metabolism. The investigation of the microbial catabolism of A-type procyanidins is of great importance due to their more complex structure in comparison to B-type procyanidins. A-type procyanidins exhibit an additional ether linkage between the flavan-3-ol monomers. In this study two A-type procyanidins, procyanidin A2 and cinnamtannin B1, were incubated in the pig cecum model to mimic the degradation caused by the microbiota. Both A-type procyanidins were degraded by the microbiota. Procyanidin A2 as a dimer was degraded by about 80% and cinnamtannin B1 as a trimer by about 40% within 8 h of incubation. Hydroxylated phenolic compounds were quantified as degradation products. In addition, two yet unknown catabolites were identified, and the structures were elucidated by Fourier transform mass spectrometry. |
| Databáze: | OpenAIRE |
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