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Senna alata leaves are a good source of propelargonidins
Aina Ramsay1, Irene Mueller-Harvey1
1a Chemistry and Biochemistry Laboratory, School of Agriculture, Policy and Development , University of Reading , Reading , UK.
Natural Product Research
|November 15, 2015
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.
