Senna alata leaves are a good source of propelargonidins |
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| Authors: | Aina Ramsay Irene Mueller-Harvey |
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| Affiliation: | 1. Chemistry and Biochemistry Laboratory, School of Agriculture, Policy and Development, University of Reading, Reading, UKaina.ramsay@reading.ac.ukaina.ramsay@hotmail.fr;4. Chemistry and Biochemistry Laboratory, School of Agriculture, Policy and Development, University of Reading, Reading, UK |
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| Abstract: | Proanthocyanidins (PA) in Senna alata leaves were investigated by thiolysis with benzyl mercaptan, LC–MS and NMR and consisted of almost pure propelargonidins with <6% procyanidins, had B-type linkages and a mean degree of polymerisation of three. Epiafzelechin was the major flavan-3-ol subunit (>94%) and epicatechin a minor constituent (6.4%) in residual PA and mainly detected as an extension unit. |
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| Keywords: | Senna alata Cassia alata proanthocyanidins propelargonidins LC–MS NMR thiolysis |
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