Radical scavenging, antioxidant and antimicrobial activities of halophytic species

Abstract

Rop O., Řezníček V., Mlček J., Juríková T., Balík J., Sochor J., Kramářová D., 2011. Antioxidant and radical oxygen species scavenging activities of 12 cultivars of blue honeysuckle fruit. Hort. Sci. (Prague), 38: 63-70. The fruit of blue honeysuckle (Lonicera caerulea L. var. kamtchatica (Sevast.) Pojark.) belongs to the fruit of great value because of itsunique chemical composition. The aim of our measurement of this fruit species was to select the cultivars which could be the most suitable food supplement in relation to strengthening human immunity system. The comparison of the fruit of 12 cultivars was made. The highest contents of polyphenolic substances were recorded in the cultivar Zolushka with the value of 9.03 g of gallic acid/kg fresh mass. In particular cultivars the DPPH (2,2-diphenyl-1-picrylhydrazyl) test was performed to determine antioxidant activity which ranged from 6.59-10.17 g of ascorbic acid equivalent/kg fresh mass. For comparison, scavenging activity of reactive oxygen species (superoxide anion, hydroxyl radical, and nitric oxide) was determined by using a 25% methanolic extract of fruit of particular cultivars. Antioxidant potential was also assessed using the rat liver slice model. The highest values of scavenging activity were found in the cultivars Zolushka, Goluboe vreteno, and Gerda. The cultivars Zolushka, Goluboe vreteno, and Gerda had also high values of flavonoids. The presented results may be used when popularizing this fruit species and also when studying the properties of new food and genetic resources.

Study of the Efficacy of Two Extraction Techniques from <i>Crithmum maritimum</i> and<i> Salicornia europaea</i>

“…Data highlight that the best results in SFE extraction were obtained for Crithmum maritimum extract with 40% of ethanol. The richness in antioxidant compounds of sea fennel among different halophytic species were also demonstrated by Meot-Duros et al [8] that examine the antioxidants of extracts with methanol. Moreover, other works in the literature report that both sea fennel leaves and Salicornia herbacea seed extracted with water/methanol or acetone respectively, are full in phenolic compounds [5,12,47].…”

“…For its richness on carotenoids, iodine and phenolic compounds it is used in folk medicine as appetizer, antiscorbutic and diuretic disease [7]. Studies on acetone, chloroformic and methanolic extracts show that sea fennel leaves are rich in phenolic compounds, particularly in chlorogenic acid [5,8,9]. Moreover, the antibacterial activity of sea fennel essential oil against Gram-positive bacteria was reported by Senatore et al [7].…”

“…While numerous studies on chemical composition of halophytes essential oil and on properties of their extracts obtained by toxic solvents (acetone, methanol and chloroformic) are available, [1,3,8,9], eco-friendly extraction approach like UAE or SFE that use only water or ethanol are not still applied. Therefore, the aim of this work was to compare the extracts of two halophytes (i.e.…”

Estimation of organic matter digestibility, metabolizable energy, phenolic compounds and antioxidant activity of stems and seeds of the <i>Juncus acutus</i> plant in ruminant nutrition

“…Juncaceae has been identified as a new source of natural antioxidants in feed (Meot-Duros et al, 2008). Because of increased concern about synthetic antioxidants that can be toxic to animal DNA, there is great interest in finding new and safe antioxidants from natural sources (Muraina, 2009).…”

Cytotoxic effects ofEryngium kotschyiandEryngium maritimumon Hep2, HepG2, Vero and U138 MG cell lines

“…It was confirmed in the previous studies that Eryngium species had various antioxidant components (poliphenolic compounds such as chlorogenic acid) (Ebrahimzadeh et al, 2009;Le Claire et al, 2005;Meot-Duros et al, 2008;). In this study, even though the antioxidant effect of E. kotschyi and E. maritimum were not studied in the cell lines, a plausible explanation for the less cytoprotective activity (where the LDH results confirm) could be due to lack of antioxidant activity.…”