Comparative assessment of antioxidant and cholinesterase inhibitory properties of the marigold extracts from Calendula arvensis L. and Calendula officinalis L.

Anti-oxidant, antimicrobial and anti-acetylcholinesterase activities of organic extracts from aerial parts of three Tunisian plants and correlation with polyphenols and flavonoids contents

“…In comparison with other studies for the same species, much more important quantities of TPP and TF have been remarked in our findings. Indeed, Ercetin et al (2012) found a TPP content of 43 µg GA/mg approximately in flowers dichloromethane extract from C. arvensis, which is similar to our result (43.8 ± 0.1 µg GA/mg), however, for the same extract, they found a weak quantity of TF (5 μg QE/mg) while we found 35.1 ± 0.1 µg QE/mg. Other study showed that a methanolic extract of flowers from C. arvensis exhibited a TPP and TF contents of 14.5 ± 0.4 µg GA/mg and 5.3 ± 0.4 μg QE/mg, respectively (Cetkovic et al, 2004), and this quantities are much fewer than the contents found with all flowers extracts in our work.…”

“…Concerning anti-oxidant activities, our findings seem to be better than results reported from other works on these three plants, indeed, Ercetin et al (2012) findings showed that extracts from C. arvensis exhibits a weak DPPH anti-radical activity (EC50% >1000 µg/mL for all extracts), while in our work we found that extracts from this same plant present a potent activity. Furthermore, Tabana et al (2015) indicated that an extract from N. glauca had been exhibit an anti-radical activities against DPPH and ABTS of 86.7 µg /mL and 67.6 µg /mL respectively, besides, we found a much better activities with several extracts from this same plant.…”

Investigation of quality and antimicrobal activity of cultivated marigold flowers Calendula officinalis L.

“…Ranija ispitivanja su pokazala da etanolni i metanolni ekstrakti cvasti nevena deluju antiinflamatorno, vazoprotektivno, antimikrobno, spazmolitično i antioksidantno, a vodeni ekstrakti ispoljavaju i antiholinesterazni efekat (11)(12)(13).…”

Chemical Composition and Enzymes Inhibitory, Brine Shrimp Larvae Toxicity, Antimicrobial and Antioxidant Activities of Caloplaca biatorina

“…The DPPH radical scavenging capacity of the extract was evaluated using a previously published method [15,16].…”