Tannins are naturally occurring protein-binding polyphenols that occur in many forage plants and which reduce nutritive value through inhibitory effects on ruminal and intestinal functions. Some animals have adapted to tannins through the synthesis of tannin-binding salivary proteins, the presence of tannin-resistant or tannin-degrading ruminal/intestinal microorganisms, or other potential adap...

In this thesis, I experimentally investigate feeding selectivity in fallow deer (Dama dama), with respect to plant secondary compounds, especially tannins, which can decrease the quality of foods. I found that fallow deer avoided foods with higher amounts of tannic acid and Quebracho tannin, even though the deer ate some high-tannin food. The food choice was strongly dependent on the context in...

Oxidative stress induced ROS and free radicals are believed to be major cause of degenerative diseases. Naturally occurring antioxidant supplements from plants are vital to counter the oxidative damage in cells. We assessed the antioxidant potential and phytochemical constituents of crude hydro-alcoholic extract of Euphorbia neriifolia (EN) using tests involving inhibition of DPPH, H2O2, supero...

Considering the easy contagion of tuberculosis (TB) disease spread and the emergence of multidrug-resistant TB, which directly impacts the failure of therapeutic goals and mortality rates increasing, TB disease control remains to be the main concern of continuous health development effort. Therefore, the discovery of new TB drug is needed. This research assessed the new natural anti-TB drug fro...

INTRODUCTION Streptococcus mutans has been implicated as primary microorganisms which cause dental caries in humans. There has been an increased interest in the therapeutic properties of some medicinal plants and natural compounds which have demonstrated antibacterial activities. Grape is one of the plants of this group which contains tannin and polyphenolic compound. AIM To evaluate and comp...

Cortical parenchyma cells penetrated and fed upon by Pratylenchus penetrans for 48 hours contained only cytoplasmic debris. Proximal cells had an increase in tannin deposits, degenerated mitochondria, increased numbers of ribosomes, and no internal membrane structure. Often the endodermis was collapsed and contained massive tannin deposits on the inner cell wall and cell lumen. Similar observat...

The research objectives were to identify the secondary metabolite components, total phenolic content and determine antioxidant activity of ethanol extract red betel leaf (Piper crocatum Ruiz & Pav.). extraction process was carried out by materation using as a solvent. Determination colorimetrically with Folin-Ciocalteu reagent measured at maximum wavelength 765 nm. DPPH method spectrophotom...

Calcium oxalate crystals are responsible for formation of urinary calculi. Traditional therapy based on plants and herbal resources have found beneficial treatment kidney stones. The present study aimed to screen antilithiatic antioxidant potential Polyalthia Longifolia leaves methanolic extract. extract was evaluated the presence secondary metabolites, total phenolic content flavonoid contents...

The tannin fractions isolated from hazelnuts, walnuts and almonds were characterised by colorimetric assays and by an SE-HPLC technique. The complexation of Cu(II) and Zn(II) was determined by the reaction with tetramethylmurexide, whereas for Fe(II), ferrozine was employed. The walnut tannins exhibited a significantly weaker reaction with the vanillin/HCl reagent than hazelnut and almond tanni...