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Wyświetlanie 1-3 z 3
Tytuł:
Bioinformatic insight into Portulaca oleracea L. (Purslane) of Bulgarian and Greek origin
Autorzy:
Balabanova, V.
Hristov, I.
Zheleva-Dimitrova, D.
Sugareva, P.
Lozanov, V.
Gevrenova, R.
Powiązania:
https://bibliotekanauki.pl/articles/2117810.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Portulaca oleracea
LC–HRAMS
secondary metabolites
descriptive analysis
multivariate statistics
Opis:
Portulaca oleracea L. (Portulacaceae) is used as functional food and its nutritional and therapeutic properties are related to the high levels of organic and fatty acids, polyphenols, polysaccharides and cyclo-dopa amides. This study presents a strategy based on liquid chromatography – high resolution accurate mass spectrometry method (LC – HRAMS) and bioinformatic methods to analyze 33 purslane accessions originating from 11 floristic regions in Bulgaria together with 5 accessions of Greek provenance. Extracts were obtained by microwave extraction. Based on the LC-MS metabolic “fingerprints” of assayed samples, a purslane metabolic database was developed. LC-MS data were proceeded with Software application Compound Discover 2.0 (Thermo Fischer Sci., USA). Principal Component Analysis (PCA) combined with both descriptive and differential analyses were used to find marker metabolites to distinguish different geographical regions. The differential analysis of the Bulgarian and Greek samples allowed the identification of 50 marker metabolites. Based on accurate masses, retention times, fragmentation patterns in MS/MS, comparison with commercial standards and literature data, these secondary metabolites were identified after detailed analysis of Volcano-plots. For the first time, 29 compounds are reported. The identified compounds were used to perform a study of the biosynthetic pathways of purslane secondary metabolites using Kyoto Encyclopedia of Genes and Genomes (KEGG) software platform. The statistical treatments identified marker compounds that can be used to distinguish the origin of accession set. Combining LC-MS data with multivariate statistical analysis was shown to be effective in studying the purslane metabolites, allowing for integration of chemistry with geographic origin.
Źródło:
Acta Biologica Cracoviensia. Series Botanica; 2020, 62, 1; 7-21
0001-5296
Pojawia się w:
Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of phenolic profile and in vitro antioxidant capacity of Sorbus domestica L. leaf samples from Poland and Croatia
Autorzy:
Rutkowska, M.
Dybicka, M.
Olszewska, M.A.
Powiązania:
https://bibliotekanauki.pl/articles/2117865.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
antioxidant activity
extract quality
LC-MS
leaves
polyphenolic composition
Sorbus
domestica L.
Opis:
This work presents a comparative analysis of the phenolic composition (UHPLC-PDA-ESI-MS 3 , HPLC-PDA- fingerprint, UV-spectrophotometric methods) and antioxidant activity (DPPH, FRAP) of leaf samples from two vegetation seasons of a medicinal and dietary plant Sorbus domestica growing in its natural habitat (Croatia, C) and cultivated in Poland (P). The samples from both sources were rich in structurally diverse polyphenols (44 analytes; P: 73.4–76.6 and C: 98.3–106.7 mg GAE/g dry leaves) including the dominating flavan-3-ols and flavonoids. The greatest qualitative and quantitative differences were observed for flavonoids (P: 14.3–20.3%; C: 27.5–34.1% of polyphenols) – in the Polish samples flavonoid diglycosides predominated, in the Croatian samples the contents of both monoglycosides and diglycosides were similar. In the case of dry methanolic extracts, despite the higher extraction efficiency obtained for the Croatian samples (32–36% vs 23–24%), the quality of the extracts was comparable, both in terms of the total phenolic content (P: 269.4–280.0; C: 297.6–304.4; mg GAE/g dry extract) and antioxidant activity parameters (DPPH, EC 50 , μg/mL. P: 10.5–10.9, C: 10.0–10.3; and FRAP, mmol Fe 2+/g, P: 6.64–7.13, C: 7.06–7.11). As a result, the study confirmed the influence of environmental conditions on the phenolic profile and antioxidant capacity of S. domestica leaves, as well as showed that despite some differences, plant materials from both Poland and Croatia might be suitable for production of natural health products.
Źródło:
Acta Biologica Cracoviensia. Series Botanica; 2019, 61, 1; 63-73
0001-5296
Pojawia się w:
Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scutellaria baicalensis: the end of the flavone biosynthesis pathway
Autorzy:
Elkin, Y.N.
Kulesh, N.I.
Shishmarev, V.M.
Kargin, V.M.
Manyakhin, A.Y.
Powiązania:
https://bibliotekanauki.pl/articles/2142056.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Chinese skullcap
LC-MS analysis
OMe flavones
oroxylin A
root bark
wogonin
Opis:
The report demonstrates that plenty of methylated flavones of the plant, as the end product of the flavone biosynthesis pathway, are concentrated in the root bark, which largely remains in the waste that makes up 7% w/w of the commercial root and is discarded. The study of the waste extract showed that the last enriched with monomethylated flavones wogonin and oroxylin A, along with some polymethylated ones represent an end of the biosynthesis pathway of flavones in the plant. In addition to wogonin, 7 known methylated flavones were found for the first time in the root bark. Due to a high content of wogonin and oroxylin A in the extract, these flavones were concentrated using preparative liquid chromatography. As a result, the obtained complex of these two target flavones turned out to be 0.8% w/w of the waste. Such morphologically specific accumulation of methylated flavones at the root boundary raises the question of their role in plant life.
Źródło:
Acta Biologica Cracoviensia. Series Botanica; 2022, 64, 1; 39-43
0001-5296
Pojawia się w:
Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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