Inscriere cercetatori

Premii Ad Astra

premii Ad Astra

Asociația Ad Astra a anunțat câștigătorii Premiilor Ad Astra 2022: Proiectul și-a propus identificarea și popularizarea modelelor de succes, a rezultatelor excepționale ale cercetătorilor români din țară și din afara ei.

Asociatia Ad Astra a cercetatorilor romani lanseaza BAZA DE DATE A CERCETATORILOR ROMANI DIN DIASPORA. Scopul acestei baze de date este aceea de a stimula colaborarea dintre cercetatorii romani de peste hotare dar si cu cercetatorii din Romania. Cercetatorii care doresc sa fie nominalizati in aceasta baza de date sunt rugati sa trimita un email la

Evaluation of Biologically Active Compounds from Calendula officinalis Flowers using Spectrophotometry

BUTNARIU, M; Coradini, C.Z. Evaluation of Biologically Active Compounds from Calendula officinalis Flowers using Spectrophotometry, Chemistry central journal, Volume: 6, Article Number: 35, Published: APR 27 2012 (Accession Number: WOS: 000305455900001, PubMed ID: 22540963, ISSN: 1752–153X), Times Cited: 18 (from Web of Science Core Collection), IF(2014): 2.19.

Hide ResearcherID and ORCID

Author ResearcherID ORCID Number

CHEMISTRY CENTRAL JOURNAL. ISSN: 1752-153X, Volume: 6, Article Number: 35, DOI: 10.1186/1752-153X-6-35, Published: APR 27 2012,

Abstract: Background: This study aimed to quantify the active biological compounds in C. officinalis flowers. Based on the active principles and biological properties of marigolds flowers reported in the literature, we sought to obtain and characterize the molecular composition of extracts prepared using different solvents. The antioxidant capacities of extracts were assessed by using spectrophotometry to measure both absorbance of the colorimetric free radical scavenger 2,2-diphenyl-1-picrylhydrazyl (DPPH) as well as the total antioxidant potential, using the ferric reducing power (FRAP) assay. Results: Spectrophotometric assays in the ultraviolet-visible (UV-VIS) region enabled identification and characterization of the full range of phenolic and flavonoids acids, and high-performance liquid chromatography (HPLC) was used to identify and quantify phenolic compounds (depending on the method of extraction). Methanol ensured more efficient extraction of flavonoids than the other solvents tested. Antioxidant activity in methanolic extracts was correlated with the polyphenol content. Conclusions: The UV-VIS spectra of assimilator pigments (e.g. chlorophylls), polyphenols and flavonoids extracted from the C. officinalis flowers consisted in quantitative evaluation of compounds which absorb to wavelengths broader than 360 nm.
Research Areas: Chemistry

Web of Science Categories: Chemistry, Multidisciplinary

Document Type: Article, Accession Number: WOS:000305455900001, PubMed ID: 22540963