Matches in SemOpenAlex for { <https://semopenalex.org/work/W137181672> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W137181672 abstract "Predominant medical effect of many plants and herbs is related to the presence of polyphenolic secondary plant metabolites commonly known as flavonoids. Different classes of flavonoids are synthesized as a response to the ambient stimuli (climate, stress, mold attacks etc.) and accumulate in various cells and plant parts. The antioxidant potential and selected flavonoids content in sea buckthorn (Hippophae Rhamnoides L.) plant part materials (stems, leaves and fruits) has been investigated during one vegetative cycle. New RP-HPLC method using gradient elution for determination of 10 polyphenols, namely catechin, epicatechin, rutin, quercetin, quercitrin, kaempferol, gallic acid, p-coumaric acid, caffeic acid and ferulic acid has been developed. Significant part of method development included optimization of extraction step for sample matrix removal. As the most suitable, liquid-liquid extraction of methanolic plant solutions using diethylether was found. Proposal method comprised also optimization of chromatographic conditions and final validation. Total antioxidant activity (TAC) of sea buckthorn extracts was determined spectrophotometrically by methods based on DPPH and ABTS free radical scavenging abilities. Consequently, total content of polyphenols (TPC) was estimated by Folin-Ciocalteu method. All spectrophotometrically measured characteristics were expressed as gallic acid equivalents and compared. Acceptable linear correlation between TAC and TPC was observed (R2 = 0,983) which indicates prevalent responsibility of flavonoids for total antioxidant activity. In comparison with stems and leaves, significantly lower content of polyphenols was observed in fruits. In leaves and stems, the most representative analytes were catechin, epicatechin and gallic acid. While the content of catechin in stems increased from April to October (95 – 202 mg/kg), catechin in leaves continuously decreased in the same time (167 – 31 mg/kg)." @default.
- W137181672 created "2016-06-24" @default.
- W137181672 creator A5028493374 @default.
- W137181672 creator A5037236495 @default.
- W137181672 creator A5059876734 @default.
- W137181672 creator A5076480467 @default.
- W137181672 date "2013-06-10" @default.
- W137181672 modified "2023-09-27" @default.
- W137181672 title "HPLC profiles of polyphenolic compounds and estimation of antioxidant potential in sea buckthorn plant parts" @default.
- W137181672 hasPublicationYear "2013" @default.
- W137181672 type Work @default.
- W137181672 sameAs 137181672 @default.
- W137181672 citedByCount "0" @default.
- W137181672 crossrefType "journal-article" @default.
- W137181672 hasAuthorship W137181672A5028493374 @default.
- W137181672 hasAuthorship W137181672A5037236495 @default.
- W137181672 hasAuthorship W137181672A5059876734 @default.
- W137181672 hasAuthorship W137181672A5076480467 @default.
- W137181672 hasConcept C179998833 @default.
- W137181672 hasConcept C185592680 @default.
- W137181672 hasConcept C2775945827 @default.
- W137181672 hasConcept C2775963812 @default.
- W137181672 hasConcept C2777263532 @default.
- W137181672 hasConcept C2778004101 @default.
- W137181672 hasConcept C2778224086 @default.
- W137181672 hasConcept C2778362808 @default.
- W137181672 hasConcept C2779431889 @default.
- W137181672 hasConcept C2780213334 @default.
- W137181672 hasConcept C2781031786 @default.
- W137181672 hasConcept C2781263971 @default.
- W137181672 hasConcept C2781401929 @default.
- W137181672 hasConcept C31903555 @default.
- W137181672 hasConcept C43617362 @default.
- W137181672 hasConcept C55493867 @default.
- W137181672 hasConcept C70899900 @default.
- W137181672 hasConceptScore W137181672C179998833 @default.
- W137181672 hasConceptScore W137181672C185592680 @default.
- W137181672 hasConceptScore W137181672C2775945827 @default.
- W137181672 hasConceptScore W137181672C2775963812 @default.
- W137181672 hasConceptScore W137181672C2777263532 @default.
- W137181672 hasConceptScore W137181672C2778004101 @default.
- W137181672 hasConceptScore W137181672C2778224086 @default.
- W137181672 hasConceptScore W137181672C2778362808 @default.
- W137181672 hasConceptScore W137181672C2779431889 @default.
- W137181672 hasConceptScore W137181672C2780213334 @default.
- W137181672 hasConceptScore W137181672C2781031786 @default.
- W137181672 hasConceptScore W137181672C2781263971 @default.
- W137181672 hasConceptScore W137181672C2781401929 @default.
- W137181672 hasConceptScore W137181672C31903555 @default.
- W137181672 hasConceptScore W137181672C43617362 @default.
- W137181672 hasConceptScore W137181672C55493867 @default.
- W137181672 hasConceptScore W137181672C70899900 @default.
- W137181672 hasLocation W1371816721 @default.
- W137181672 hasOpenAccess W137181672 @default.
- W137181672 hasPrimaryLocation W1371816721 @default.
- W137181672 hasRelatedWork W1855878328 @default.
- W137181672 hasRelatedWork W1975408381 @default.
- W137181672 hasRelatedWork W2008739204 @default.
- W137181672 hasRelatedWork W2028136165 @default.
- W137181672 hasRelatedWork W2042844363 @default.
- W137181672 hasRelatedWork W2070182044 @default.
- W137181672 hasRelatedWork W2096399172 @default.
- W137181672 hasRelatedWork W2148846193 @default.
- W137181672 hasRelatedWork W2181328681 @default.
- W137181672 hasRelatedWork W2195549997 @default.
- W137181672 hasRelatedWork W2295630086 @default.
- W137181672 hasRelatedWork W2425885539 @default.
- W137181672 hasRelatedWork W2575666675 @default.
- W137181672 hasRelatedWork W2596350985 @default.
- W137181672 hasRelatedWork W2884839238 @default.
- W137181672 hasRelatedWork W2998044155 @default.
- W137181672 hasRelatedWork W3049562639 @default.
- W137181672 hasRelatedWork W3133788765 @default.
- W137181672 hasRelatedWork W3175827843 @default.
- W137181672 hasRelatedWork W420056375 @default.
- W137181672 isParatext "false" @default.
- W137181672 isRetracted "false" @default.
- W137181672 magId "137181672" @default.
- W137181672 workType "article" @default.