RT journal article
T1 Rosmarinic acid and flavonoids of the seagrass Zostera noltei: New aspects on their quantification and their correlation with sunlight exposure
A1 Casal Porras, Isabel
A1 Muñoz Jiménez, Kimberly
A1 Ortega Agüera, María Jesús
A1 Brun Murillo, Fernando Guillermo
A1 Zubía Mendoza, Eva
A2 Biología
A2 Química Orgánica
K1 phenolic metabolites
K1 seagrasses
K1 drying
K1 freezing
K1 rosmarinic acid
K1 sulfated flavonoids
K1 photoprotection
K1 UV light
AB Seagrasses are plants adapted to the marine environment that inhabit shallow coastal waters,where they may be exposed to direct sunlight during low tides. These plants have photoprotectionmechanisms, which could include the use of phenolic secondary metabolites. In this study, rosmarinicacid (RA) and the flavonoids of Zostera noltei from the Bay of Cadiz (Spain) have been analyzed,first to define suitable conditions of leaves (i.e., fresh, dried, or frozen) for quantitative analysis,and then to explore the potential correlation between the phenolic profile of the leaves and sunlightexposure using an in situ experimental approach. Compared with fresh leaves, the contents of RAand flavonoids were significantly lower in air-dried and freeze-dried leaves. Freezing caused highlyvariable effects on RA and did not affect to flavonoid levels. On the other hand, the content ofRA was significantly higher in plants that emerged during low tides than in plants permanentlysubmerged, while plants underneath an artificial UV filter experienced a progressive reduction inRA content. However, the major flavonoids did not show a clear response to sunlight exposure andwere unresponsive to diminished UV incidence. The results showed a positive correlation of RAwith direct sunlight and UV exposure of leaves, suggesting that this compound contributes to thephotoprotection of Z. noltei.
PB MDPI
SN 2223-7747
YR 2023
FD 2023-12-06
LK http://hdl.handle.net/10498/29961
UL http://hdl.handle.net/10498/29961
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 22-sep-2026