| Title: | Seasonal Variability of Volatilome from Dictyota dichotoma |
| Author(s): | Radman S; Cagalj M; Simat V; Jerkovic I; |
| Address: | "Department of Organic Chemistry, Faculty of Chemistry and Technology, University of Split, R. Boskovica 35, 21000 Split, Croatia. Department of Marine Studies, University of Split, R. Boskovica 37, 21000 Split, Croatia" |
| DOI: | 10.3390/molecules27093012 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "Dictyotaceae, the large family of brown algae with the genus Dictyota as the richest one among them, produce a significant number of secondary metabolites, like diterpenes. The aim of this study was to investigate the variations in the composition of the volatile organic compounds (VOCs) of the brown alga Dictyota dichotoma collected from the Adriatic Sea. For the first time, both seasonal changes and the impact of air drying were examined. Headspace solid-phase microextraction (HS-SPME) on two fibres with different polarities and hydrodistillation (HD), followed by gas chromatography and mass spectrometry (GC-MS) analysis, was performed on both fresh (FrDd) and air-dried (DrDd) D. dichotoma. The major compounds of HS-FrDd were pentadecane and oct-1-en-3-ol. The percentage of pentadecane in HS-DrDd was increased up to 7.8 times in comparison with HS-FrDd. Principal component analysis (PCA) identified differences between the variability of data among fresh and dried samples over months and clearly dissociated the fresh May samples from the others in the HS-SPME results. The most abundant group of VOCs in HD were terpenes, with diterpenes isopachydictyol A and cembra-4,7,11,15-tetraen-3-ol as the major compounds. Diterpene pachydictyol A was also found and among sesquiterpenes and gleenol was the most abundant. Based on the dominant compound analyses, the PCA showed distinct separation of the fresh and dried samples, indicating similarities between the samples and allowing the establishment of typical VOCs significant for the chemotaxonomy of D. dichotoma" |
| Keywords: | "*Diterpenes/analysis Gas Chromatography-Mass Spectrometry/methods *Phaeophyta/chemistry Seasons Solid Phase Microextraction/methods *Volatile Organic Compounds/analysis brown macroalga cembra-4, 7, 11, 15-tetraen-3-ol gas chromatography and mass spectrometry;" |
| Notes: | "MedlineRadman, Sanja Cagalj, Martina Simat, Vida Jerkovic, Igor eng KK.01.1.1.01.0002/Croatian Government and the European Union (European Regional Development Fund-the Competitiveness and Cohesion Operational Program) through project Bio-prospecting of the Adriatic Sea granted to The Scientific Centre of Excellence for Marine Bioprospecti/ Project ID 1467/PRIMA program under project BioProMedFood supported by the European Union/ Switzerland 2022/05/15 Molecules. 2022 May 7; 27(9):3012. doi: 10.3390/molecules27093012" |
