Studies involving the kinetic reaction between vanillin and condensed tannins were developed using a flow injection system with spectrophotometric determination. A solution of the monomeric compound (-)-epicatechin was used as the analytical standard. This compound was chosen due to its structure, which is similar to a polymeric unit of the condensed tannin present in plants. The results indica...

The recent finding that grape tannin may contain significant amount of S-glutathionylated (GSH-3MH) and S-cysteinylated (Cys-3MH) precursors of the varietal thiols 3-mercapto-1-hexanol and 3-mercaptohexyl acetate, characteristic of Sauvignon blanc wines, offers new opportunities for enhancing the tropical aroma in fermented beverages. In this study this new hypothesis was investigated: Müller T...

Loblolly pine (Pinus tueda L) has become the most important source of wood fiber in the southern United States. This tree is an excellent competitor and recovers well from a variety of adverse conditions. ‘a2 The value of loblolly pine as a plantation tree has encouraged many researchers to devote their careers to the study of this species. It is surprising then that the root system of loblolly...

The present study was designed to investigate the antidiarrhoeal, nitric oxide scavenging and total tannin content from the ethanolic extract of the bark of Ceriops decandra (Griff.) Ding Hou (Family: Rhizophoraceae). The ethanol extract at graded doses (200 & 400 mg/kg body weight) was investigated for antidiarrhoeal activity in term of reduction in the rate of defecation and consistency of fa...

BACKGROUND Vascular smooth muscle cell (VSMC) migration is integral in the pathogenesis of atherosclerosis. Sumac (Rhus coriaria) berries are believed to have atheroprotective effects. Therefore, Sumac, which is a rich source of tannin antioxidants, was tested for its capacity to inhibit VSMC migratory activity. MATERIALS & METHODS Tannin was extracted and purified from ground Sumac. Cultured...

the effect of grape pomace (vitis vinifera) and in oak leaf (quercus libani) tannins by three runs of in vitro gas production on the organic matter digestibility (omd) and in situ dry matter (dm) and crude protein (cp) disappearance were studied in four sheeps. polyethylene glycol (peg) was used to deactivate the tannins. in vitro gas production was recorded at 2, 4, 6, 8, 12, 48, 72, 96 and 12...

The plant of Crataegus Azarolus L, genus that belongs to the Rosaceae family and is a low, dense, spiny tree with beautiful inflorescence, phytochemical investigations on were mainly performed leaves, flowers berries. objective this experiment was determine ratio tannin phenol compound by method orbital shaker extraction. azarolus L collected in hasanbag mountain soran, Kurdistan. parts seed, l...

Ingestion of small amounts of condensed tannin (CT) by ruminants can produce valuable outcomes such as improved nitrogen use and reduced bloating, methane output, and gastrointestinal parasitism. However, many grasses and forbs contain little if any CT. The specific types of CT vary in plants and can have somewhat different effects on ruminants. Individual ruminants can respond differently to C...