scholarly journals Amides and an Alkaloid from Portulaca oleracea

2012 ◽  
Vol 7 (8) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Tetsuo Kokubun ◽  
Geoffrey C. Kite ◽  
Nigel C. Veitch ◽  
Monique S. J. Simmonds
Keyword(s):  
Phenolic Compounds ◽  
Benzoic Acid ◽  
Polar Fraction ◽  
Portulaca Oleracea ◽  
Spectroscopic Analyses ◽  
Derivatives Of

A total of 16 phenolic compounds, including one new and five known N-cinnamoyl phenylethylamides, one new pyrrole alkaloid named portulacaldehyde, five phenylpropanoid acids and amides, and derivatives of benzaldehyde and benzoic acid, were isolated and identified from a polar fraction of an extract of Portulaca oleracea. Their structures were determined through spectroscopic analyses.

scholarly journals Insight into the Secondary Metabolites of Geum urbanum L. and Geum rivale L. Seeds (Rosaceae)

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1219
Author(s):  
Marek Bunse ◽  
Peter Lorenz ◽  
Florian C. Stintzing ◽  
Dietmar R. Kammerer
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Unsaturated Fatty Acids ◽  
Asiatic Acid ◽  
Cosmetic Products ◽  
Nutritional Properties ◽  
First Time ◽  
Derivatives Of ◽  
Geum Urbanum ◽  
Insight Into

The present study aimed at the identification and quantitation of phenolic compounds, fatty acids, and further characteristic substances in the seeds of Geum urbanum L. and Geum rivale L. For this purpose, individual components of extracts recovered with MeOH, CH2Cl2, and by cold-pressing, respectively, were characterized by HPLC-DAD/ESI-MSn and GC/MS and compared with reference compounds. For both Geum species, phenolic compounds, such as flavonoids and gallic acid derivatives, and triterpenes, such as saponins and their aglycones, were detected. Surprisingly, both Geum species revealed the presence of derivatives of the triterpenoid aglycons asiatic acid and madecassic acid, which were characterized for the first time in the genus Geum. Furthermore, the fatty acids of both species were characterized by GC–MS after derivatization. Both species showed a promising fatty-acid profile in terms of nutritional properties because of high proportions of unsaturated fatty acids. Linoleic acid and linolenic acid were most abundant, among other compounds such as palmitic acid and stearic acid. In summary, the present study demonstrates the seeds of G. urbanum and G. rivale to be a valuable source of unsaturated fatty acids and bioactive phenolics, which might be exploited for nutritional and cosmetic products and for phytotherapeutic purposes.

scholarly journals Stable Isotope Labeled 4-(Dimethylamino)benzoic Acid Derivatives of Glycerophosphoethanolamine Lipids

2009 ◽  
Vol 81 (16) ◽  
pp. 6633-6640 ◽  
Author(s):  
Karin A. Zemski Berry ◽  
William W. Turner ◽  
Michael S. VanNieuwenhze ◽  
Robert C. Murphy
Keyword(s):  
Stable Isotope ◽  
Benzoic Acid ◽  
Benzoic Acid Derivatives ◽  
Derivatives Of

scholarly journals Total phenolics and phenolic acids content in low (Chrysopogon gryllus) and mediocre quality (Festuca vallesiaca) forage grasses of Deliblato Sands meadow-pasture communities in Serbia

2011 ◽  
Vol 50 (No. 2) ◽  
pp. 54-59 ◽  
Author(s):  
L. Djurdjević ◽  
M. Mitrović ◽  
P. Pavlović ◽  
S. Perišić ◽  
M. Mačukanović-Jocić
Keyword(s):  
Benzoic Acid ◽  
Phenolic Acids ◽  
Hplc Analysis ◽  
Total Phenolics ◽  
Syringic Acid ◽  
Forage Grasses ◽  
Benzoic Acid Derivatives ◽  
Derivatives Of ◽  
Bound Phenolics

 Chrysopogon gryllus and Festuca vallesiaca are components of a number of meadow-pasture communities in Serbia. We performed the analyses of phenolics that influence quality and digestibility of grasses to a great extent. Total phenolics were measured spectrophotometrically and phenolic acids by HPLC analysis. The aboveground parts of C. gryllus contained 10.6 mg/g whereas F. vallesiaca of 21.6 mg/g total phenolics. Bound phenolics dominated over free ones in both species. The content of both free and bound p-coumaric, ferulic, p-hydroxybenzoic and syringic acid was higher in C. gryllus (6.34 mg/g) than in F. vallesiaca (3.96 mg/g). Derivatives of cinnamic acid prevailed in both species compared to the benzoic acid derivatives. Low quality of C. gryllus is connected with its high tissue phenolic acids and mediocre quality of F. vallesiaca with the high content of total phenolics that act unfavourably on digestibility of such grasses.  

Carbon-13 chemical shift assignments of derivatives of benzoic acid

1990 ◽  
Vol 28 (3) ◽  
pp. 271-275 ◽  
Author(s):  
Stanisław Wnuk ◽  
Elżbieta Wyrzykiewicz ◽  
Elżbieta Kaczmarek ◽  
Stefan Kinastowski
Keyword(s):  
Chemical Shift ◽  
Benzoic Acid ◽  
Chemical Shift Assignments ◽  
Derivatives Of

scholarly journals Morphological Traits and Phenolic Compounds in Tunisian Wild Populations and Cultivated Varieties of Portulaca oleracea L.

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 948 ◽  
Author(s):  
Dorra Sdouga ◽  
Ferdinando Branca ◽  
Souhir Kabtni ◽  
Maria Concetta Di Bella ◽  
Neila Trifi-Farah ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Geographic Origin ◽  
Sinapic Acid ◽  
Principal Component ◽  
Portulaca Oleracea ◽  
Array Detector ◽  
Wild Populations ◽  
Antioxidant Power ◽  
Morphological Heterogeneity ◽  
Freeze Dried

This study aims to evaluate the bio-morphological and biochemical variability of three Tunisian wild populations and one growing cultivar of purslane (Portulaca oleracea L.). The studied varieties should be easily distinguished by the color and the habitus of the plant as mentioned in literature, but the various analyses have shown a strong morphological heterogeneity within and among the wild and cultivated accessions as presented by the variance analysis test (ANOVA) and the PCA (Principal component analysis). We found high intrapopulation variability through the wild populations that make it hard to differentiate them only on the base of morphology. We analyzed the biochemical profile of those populations based on the analysis of freeze-dried samples of leaves and stems. We identified and quantified twelve different phenolic compounds by the HPLC-diode array detector (DAD) technique. Six phenolic acids and flavonoids were identified in the leaves and stems of the wild and cultivated populations. Sinapic acid and myricetin are the majors identified compounds through our samples. The results were significantly different in relation to the plant organs and to the geographic origin for most of the compounds. The obtained results highlighted the importance of Portulaca as a medicinal plant by showing its richness in phenols and flavonoids that have multi-medicinal effects besides their antioxidant power.

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