A1 Refereed original research article in a scientific journal
Seed tannin composition of tropical plants
Authors: Kim Jorma, Gripenberg Sofia, Karonen Maarit, Salminen Juha-Pekka
Publisher: Elsevier Ltd
Publication year: 2021
Journal: Phytochemistry
Journal name in source: Phytochemistry
Journal acronym: Phytochemistry
Article number: 112750
Volume: 187
ISSN: 0031-9422
eISSN: 1873-3700
DOI: https://doi.org/10.1016/j.phytochem.2021.112750
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/57455647
Abstract
Seeds collected from trees, shrubs and lianas growing on Barro Colorado Island, Panama, were analyzed for their content of phenolic compounds, oxidative activities and protein precipitation capacities. Proanthocyanidins and hydrolysable tannins were detected in one-third of 189 studied species. The most oxidatively active group of species were the ones containing prodelphinidins and ellagitannins whereas the species that had the highest protein precipitation capacity in relation to their total phenolics were the ones containing punicalagin. In addition, the oxidative activity and relative protein precipitation capacity were exceptionally high in the proanthocyanidin-rich genus Psychotria. This study offers a comprehensive overview on the tannin composition and the alkaline oxidative activities and protein precipitation capacities of the seeds of tropical plants.
Seeds collected from trees, shrubs and lianas growing on Barro Colorado Island, Panama, were analyzed for their content of phenolic compounds, oxidative activities and protein precipitation capacities. Proanthocyanidins and hydrolysable tannins were detected in one-third of 189 studied species. The most oxidatively active group of species were the ones containing prodelphinidins and ellagitannins whereas the species that had the highest protein precipitation capacity in relation to their total phenolics were the ones containing punicalagin. In addition, the oxidative activity and relative protein precipitation capacity were exceptionally high in the proanthocyanidin-rich genus Psychotria. This study offers a comprehensive overview on the tannin composition and the alkaline oxidative activities and protein precipitation capacities of the seeds of tropical plants.
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