Journal
FITOTERAPIA
Volume 163, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.fitote.2022.105298
Keywords
Coriander; Degranulation inhibition; Component identification; Dihydroisocoumarin
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A water-soluble extract of coriander was found to inhibit antigen-induced degranulation of RBL-2H3 cells, and two new compounds were identified as the active components.
We found that a water-soluble extract of coriander (Coriandrum sativum L.) (leaves, petioles and stems) inhibits antigen-induced degranulation of RBL-2H3 cells, a rat basophil leukemia cell line. The aim of this study was to elucidate the anti-degranulation active components in the extract. The methanol-eluate fraction obtained by fractionation of the water-soluble extract using MCI gel column chromatography had strong activity, and eight components were isolated and identified. Two of them were identified as new compounds, (3S)-3-methyl-6hydroxyisocoumarin 8-O-beta-D-glucopyranoside (compound 1) and (7S,8R)-7,8-dihydro-8-beta-D-glucopyranosyloxy4-methoxy-7-methyl-5H-fro[2,3-g][2]benzopyran-5-one (compound 2). As a result of evaluation of antidegranulation activity of eight components, seven of them, such as tryptophan, phenylalanine, dihydroxycoumarin glucoside, quercetin glycoside, rutin, compound 1, and compound 2, had the activity. These results indicated that the water-soluble extract of coriander contains several anti-degranulation substances.
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