Study on the relation of structure and antioxidant activity of isorhamnetin, quercetin, phloretin, silybin and phloretin isonicotinyl hydrazone

2011 ◽  
Vol 1 (4) ◽  
pp. 39-47 ◽  
Author(s):  
Airen Zuo ◽  
Yu Yanying ◽  
Jing Li ◽  
Xu Binbin ◽  
Yu Xiongying ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Isonicotinyl Hydrazone

Improvement of cytoprotective and antioxidant activity of Rosa canina L. and Salix alba L. by controlled differential sieving process against H2O2-induced oxidative stress in mouse primary splenocytes

2017 ◽  
Vol 87 (3-4) ◽  
pp. 191-200 ◽  
Author(s):  
Nidhal Soualeh ◽  
Aliçia Stiévenard ◽  
Elie Baudelaire ◽  
Rachid Soulimani ◽  
Jaouad Bouayed
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Good Alternative ◽  
Activity Levels ◽  
Salix Alba ◽  
Rosa Canina ◽  
Free Process ◽  
Plant Powders ◽  
Sieving Process

Abstract. In this study, cytoprotective and antioxidant activities of Rosa canina (RC) and Salix alba (SA), medicinal plants, were studied on mouse primary splenocytes by comparing Controlled Differential Sieving process (CDSp), which is a novel green solvent-free process, versus a conventional technique, employing hydroethanolic extraction (HEE). Thus, preventive antioxidant activity of three plant powders of homogeneous particle sizes, 50–100 µm, 100–180 µm and 180–315 µm, dissolved directly in the cellular buffer, were compared to those of hydroethanolic (HE) extract, at 2 concentrations (250 and 500 µg/mL) in H2O2-treated spleen cells. Overall, compared to HE extract, the superfine powders, i. e., fractions < 180 µm, at the lowest concentration, resulted in greater reactive oxygen species (ROS) elimination, increased glutathione peroxidase (GPx) activity and lower malondialdehyde (MDA) production. Better antioxidant and preventive effects in pre-treated cells were found with the superfine powders for SA (i. e., 50–100 µm and 100–180 µm, both p < 0.001), and with the intermediate powder for RC (i. e., 100–180 µm, p < 0.05) versus HE extract. The activity levels of catalase (CAT) and superoxide dismutase (SOD) in pretreated splenocytes exposed to H2O2, albeit reduced, were near to those in unexposed cells, suggesting that pretreatment with the fine powders has relatively restored the normal levels of antioxidant-related enzymes. These findings supported that CDSp improved the biological activities of plants, avoiding the use of organic solvents and thus it could be a good alternative to conventional extraction techniques.

Oxalate Content and Antioxidant Activity of Different Ethnic Foods

2021 ◽  
Vol 31 (1) ◽  
pp. 73-79
Author(s):  
Azalia Avila-Nava ◽  
Isabel Medina-Vera ◽  
Pamela Rodríguez-Hernández ◽  
Martha Guevara-Cruz ◽  
Pamela K. Heredia-G Canton ◽  
...  
Keyword(s):  
Antioxidant Activity

Synthesis and antioxidant activity of 3-(3,4-dihydroxyphenyl)glyceric acid. Monomer of a biologically active polyether isolated from Symphytum asperum and S. caucasicum

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
M Merlani ◽  
V Barbakadze ◽  
L Gogilashvili ◽  
L Amiranashvili ◽  
K Mulkijanyan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Biologically Active ◽  
Glyceric Acid

The effect of steaming on the free amino acid contents and antioxidant activity of ginseng

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
EJ Cho ◽  
XL Piao ◽  
MH Jang ◽  
SY Park ◽  
SW Kwon ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Free Amino ◽  
Amino Acid Contents

Antioxidant activity of three polyphenol-enriched cocoa products obtained on an industrial scale

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
JL Ríos ◽  
G Schinella ◽  
S Mosca ◽  
E Cienfuegos-Jovellanos ◽  
MA Pasamar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Industrial Scale ◽  
Cocoa Products

Anticariogenic effects of extracts and fractions of Potentilla recta and their antioxidant activity

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
M Tomczyk ◽  
A Wiater ◽  
M Pleszczyńska
Keyword(s):  
Antioxidant Activity

In vitro antioxidant activity and tannin content of Echium italicum L.

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
N Niciforovic ◽  
S Solujic ◽  
V Mihailovic ◽  
D Pavlovic-Muratspahic
Keyword(s):  
Antioxidant Activity ◽  
Tannin Content ◽  
In Vitro Antioxidant Activity
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