Identification of Polyphenols from Chilean Brown Seaweeds Extracts by LC-DAD-ESI-MS/MS ...

Polyphenol profiles were characterized in extracts of three Chilean brown seaweeds, Durvillaea antarctica (Chamisso) Hariot, Lessonia spicata (Suhr) Santelices, and Macrocystis integrifolia (Bory) by liquid chromatography with mass spectrometry detection (LC-MS/MS). Phlorotannins with different degr...

Full description

Bibliographic Details
Main Authors: Olate-Gallegos, Carla, Barriga, Andrés, Vergara, Cristina, Fredes, Carolina, García, Paula, Giménez, Begoña, Robert, Paz
Format: Other Non-Article Part of Journal/Newspaper
Language:unknown
Published: Taylor & Francis 2019
Subjects:
Online Access:https://dx.doi.org/10.6084/m9.figshare.7886725
https://tandf.figshare.com/articles/journal_contribution/Identification_of_Polyphenols_from_Chilean_Brown_Seaweeds_Extracts_by_LC-DAD-ESI-MS_MS/7886725
Description
Summary:Polyphenol profiles were characterized in extracts of three Chilean brown seaweeds, Durvillaea antarctica (Chamisso) Hariot, Lessonia spicata (Suhr) Santelices, and Macrocystis integrifolia (Bory) by liquid chromatography with mass spectrometry detection (LC-MS/MS). Phlorotannins with different degrees of polymerization were identified in D. antarctica (trimers to octamers) and L. spicata (trimers to tetramers). No signals related to phlorotannins compounds were detected in M. integrifolia. L. spicata and M. integrifolia showed a great variety of flavonoid compounds in comparison with D. antarctica , mainly identified as glycoside forms in all the extracts. The antioxidant activity of brown seaweed extracts measured by ferric reducing power (FRAP) and oxygen radical absorbance capacity (ORAC) was significantly higher in D. antarctica , followed by M. integrifolia and L. spicata , in line with the total phenolic (TP) content. However, D. antarctica and M. integrifolia showed similar activity for free radical ...