Polyphenol contents and antioxidant activity of Maydis stigma extracts

Inhibitory Activity on Xanthine Oxidase and Antioxidant Properties of <i>Teucrium polium</i>

“…than all the standards. Our results revealed a proportionall incresing the antioxidant activity with the polyphenol content ( Figure 4, Table 1) agreeing with results obtained by Maksimović et al [58] working on various polyphenol classes in the silks of fifteen maize hybrids. In this study quercetin showed the lowest EC 1 values, followed by gallic, however Ascorbic acid had a ferric reducing ability lower than those of most polyphenols, these results are in agreement with the results of Pulido et al [33], in different classification in terms of antioxidant efficiency of the studied compounds at short versus long reaction times, the quercetin showed the lowest EC1 values, followed by gallic and ascorbic acids, however, ascorbic acid had a ferric reducing ability lower than those of most polyphenols.…”

Effects of extraction solvents on concentration and antioxidant activity of black and black mate tea polyphenols determined by ferrous tartrate and Folin–Ciocalteu methods

“…This result is agreement with Mello et al (2004), who observed correlation between total phenol content and antioxidant activity was very good for black tea (R 2 = 0.989) and mate tea (R 2 = 0.986). Similar results have also been reported for different plants by various studies (Katalinić et al, 2004;Maksimović, Malenčić, & Kovačević, 2005;Miliauskas et al, 2004;Yu et al, 2005). Antioxidant activity in mate tea extracts was substantially higher compared with those of black tea and significant difference was found between them (Table 2).…”

Optimization of extraction of phenolics from leaves of Ficus virens

“…The regression coefficients of DPPH (R DPPH ) from high temperatures were smaller because high temperatures might cause the aggregation and degradation of phenolics (Casazza et al, 2012). The same results have been found in previous reports (Maksimović et al, 2005;Malencic et al, 2008;Abdel-Hameed, 2009). Our results also indicated that the correlation coefficients of EAP (including R DPPH and regression coefficients of FRAP (R FRAP )) and EAF (including R DPPH and R FRAP ) were consistently similar.…”