A new polyphenolic natural substance: 2,5-dihydroxy-benzoic acid 3'-formyl-5'-hydroxy-phenyl ester (1), Anamighrinal and 3-(O-alpha-L-rhamnosyl) quercetin (2) have been isolated from the methanolic aerial part extract of the plant Anagallis monelli by chromatographic separation. Their structures have been deduced essentially by one and two NMR spectroscopic procedures and mass spectrometry. Antioxidant, mutagenic, antimutagenic activities, of the natural products were realised and positive results were recorded.
The chemical composition of five volatile fractions of honey collected from different regions of Tunisia has been studied by GC-FID and GC-MS. A comparative study of oils composition showed remarkable qualitative and quantitative differences between the constituents percentages of the different volatile fractions. The most important compounds from VF 1 were p-cymen-8-ol (27.85 %), δ-cadinene (23.25 %), 9 octadecanoic ethyl ester (18.71 %) and tricosane (11.77 %). In VF 2, the main component found was aromadendrene (23.86 %). The major constituents in the VF 3 were found to be α-acoradiene (10.60 %), thymyl acetate (10.18 %), carvacrol (6.29 %) and hexadecanoic acid (20.92 %). Cinnamaldehyde and tricosane were the most important components found in VF 4 and VF 5 respectively.
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