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SUMMARY:UHPLC-MS/MS profiling and biological activities of phenolic compou
 nds from three duckweed species for the identification of potential health
 -promoting biomolecules
DTSTART;VALUE=DATE-TIME:20261001T100000Z
DTEND;VALUE=DATE-TIME:20261001T101500Z
DTSTAMP;VALUE=DATE-TIME:20260917T004448Z
UID:indico-contribution-2926@cern.ch
DESCRIPTION:Speakers: Anim Ujong (Technological University Dublin and Teag
 asc Food Research Centre)\nDuckweeds have gained increasing attention as s
 ustainable sources of bioactive compounds with promising applications in f
 unctional foods and nutraceuticals. This study comprehensively characteriz
 ed the phenolic profiles of three duckweed species (Lemna minor\, Lemna gi
 bba\, and Spirodela polyrhiza) using ultra-high-performance liquid chromat
 ography coupled with tandem mass spectrometry (UHPLC-MS/MS). The bioactive
  potential of the extracts was evaluated through in vitro antioxidant\, en
 zyme inhibitory\, anti-inflammatory and ACE-inhibitory assays to assess th
 eir functional properties. Targeted UHPLC-MS/MS analysis revealed distinct
  species-specific phenolic profiles\, with quinic acid identified as the p
 redominant compound in all species\, particularly in L. minor (3.99 µg/mg
  extract DM)\, followed by L. gibba (2.31 µg/mg extract DM) and S. polyrh
 iza (1.64 µg/mg extract DM). S. polyrhiza exhibited a characteristic flav
 onoid-rich profile\, with markedly higher concentrations of luteolin-7-O-g
 lucoside (2.11 µg/mg extract DM) and vitexin (2.13 µg/mg extract DM) com
 pared with L. minor (0.47 and 0.20 µg/mg extract DM\, respectively) and L
 . gibba (0.12 and 0.10 µg/mg extract DM\, respectively). Apigenin was det
 ected exclusively in S. polyrhiza\, whereas caffeic acid was most abundant
  in L. gibba (0.49 µg/mg extract DM). Among the three species\, L. minor 
 demonstrated the highest total phenolic content (23.54 mg GAE/g DW)\, ferr
 ic reducing antioxidant power (FRAP\; 43.55 mmol Fe²⁺/g DW). Principal 
 component analysis revealed strong associations between specific phenolic 
 constituents and measured biological activities\, suggesting that species-
 specific phenolic profiles contribute to the functional properties of duck
 weed extracts. These findings highlight duckweed as a promising sustainabl
 e source of phenolic compounds with potential applications as functional f
 ood ingredients and health-promoting nutraceuticals.\n\nhttps://indico.uni
 na.it/event/117/contributions/2926/
LOCATION:Department of Agricultural Sciences of the University of Napoli F
 ederico II\, Portici\, Italy Sala Cinese
URL:https://indico.unina.it/event/117/contributions/2926/
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