Extracts of many species of bryophytes are known to contain phenolic compounds. Sterols, isoflavonoids, flavonoids, and bioflavonoids have been reported. Terpenoids, phenolics and volatile constituents have also been investigated in some bryophytes. Rhodobryum giganteum is reported to contain volatile oil, lactone and amino acid. Essential oil of Plagiomnium undulatum (Hedw) T Kop is reported to contain butenolides. Quercetin, luteolin and apigenin have been identified as major flavonoids in Marchantia convoluta Gao et KC Zhang.
Marchantia polymorpha Linn from Japan has been reported to accumulate eicosapentaenoic acid. Diterpenoids have been reported from the New Zealand liverwort Jungermannia species. Isotachis japonica Steph is reported to contain aromatic esters. Anoectangium bicolor Renauld & Cardot has been reported to contain the highest amount of neurotransmitter, acetylcholine, among bryophytes.
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