For example, the oligomeric proanthocyanidins (OPC) have very strong antioxidant activity, but with the increase of the degree of polymerization, their antioxidant activity decreases significantly. In addition, in terms of bioavailability, different types of polyphenols also showed significantly differences....
Table 3 shows the content of the different types of polyphenols in the DMS after oil extraction at different temperatures and in Fig. 4 an example of a HPLC chromatogram of the phenolic profile can be seen. The results obtained indicate that the main polyphenols present in the DMS are rutin...
During the last decade, interest in the use of herbs and phytogenic compounds has grown because of their potential role in the production and health of livestock animals. Among these compounds, plant tannins are polyphenolic compounds that exhibit antioxidant activity, which positively affect the comp...
PolyphenolsTanninsFlavonoidsAntioxidantactivityAgricultural residues like sugarcane bagasse (SCB), corn husk (CH), peanut husk (PNH), coffee cherry husk (CCH), rice bran (RB) and wheat bran (WB) are low-value byproducts of agriculture. They have been shown to contain significant levels of ...
Tannins are water soluble polyphenols. Tea leaves are abundant natural sources of polyphenols which get oxidized during processing to prepare the final products. Of the three main types of tea, black tea is produced by complete oxidation (fermentation) while oolong tea is semi-oxidized. Green tea...
polyphenolsEGCGtheaflavinsIn the present study, twelve different types of commercial tea samples were assayed to determine their phenolic composition and antioxidant activity. Reverse phase high performance liquid chromatography using a binary gradient system was used for the identification and quantification ...
The radical scavenging behavior of the polyphenols on 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) was also studied spectrophotometrically. The results showed that total polyphenols, total catechins and antioxi-dant activity were significantly (Plt;0.05) different in the commercial tea samples. Green ...
This pro-oxidative effect is, to a certain extent, counteracted by bran antioxidants, such as polyphenols, phenolic acids and tocopherols, resulting in a pronounced RP stabilisation21,22,23. Given the low RP concentration and the low lipid content of the fortified gari, the pro-oxidative effect...
The amounts of total sugar, reducing sugar, and starch in Han tobacco were significantly lower than other types, while the amounts of total nitrogen, potassium oxide, chloride ions, and protein were much higher than in the other tobacco types. The total amounts of polyphenols and aroma ...
Mouria M, Gukovskaya AS, Jung Y, Buechler P, Hines OJ, Reber HA, et al. Food-derived polyphenols inhibit pancreatic cancer growth through mitochondrial cytochrome C release and apoptosis. Int J Cancer. 2002;98(5):761–9. ArticleCASPubMedGoogle Scholar ...