Possible Interaction: Antioxidants and Tannins

“ Gallotannin also reduced the levels of reactive oxygen species (ROS) and malondialdehyde (MDA) as well as enhanced antioxidant enzyme superoxide dismutase (SOD) activity in oxalate treated HRCs.”

“The results revealed that tannic acid induced caspase activation and increased the presence of cellular ROS and RNS, while downregulating antioxidant expression.”

“Moreover, antioxidant capacity (ABTS) of raw samples increased with the percentage of tannins.”

“ TA treatment significantly attenuated the altered levels of oxidative stress biomarkers for nonenzymatic and enzymatic antioxidants.”

“This effect was promoted by the antioxidant enzyme inhibitory action of tannic acid , when the two chemicals were combined; however, the ultrastructural damage of the hepatocytes was reduced by the common cytoprotective capacity of the phenolic.”

“Alternatively, tannic acid may partially inhibit the antioxidant enzymes of fish.”

“ Antioxidants blocked AI transformation by TPA moderately (n-propyl gallate and tannic acid ) or weakly (BHA).”

“PCA allowed us to deduce that phenolic compounds, flavonoids, and tannins are strongly correlated with antioxidant and antidiabetic activity.”

“In addition, 2% TA significantly increased the contents of lactate (24.0–39.0 and 8.50–32.3 g/kg DM), acetate (18.0–74.5 and 9.07–53.3 g/kg DM), and the antioxidant capacity of both mulberry leaf and stylo silage, respectively.”

“The toxicity and carcinogenic effects of some synthetic antioxidants have generated interest in natural alternatives, especially plant-derived polyphenols (e.g., phenolic acids, flavonoids, stilbenes, tannins , coumarins, lignins, lignans, quinines, curcuminoids, chalcones, and essential oil terpenoids).”