Onobrychis viciifolia, also known as O. sativa or common sainfoin has been an important forage legume in temperate regions until the 1950s. During the Green Revolution it was replaced by high yielding alfalfa and clover species. Due to its anthelmintic properties the common sainfoin is a natural alternative to drugs to control nematode parasitism in the guts of small ruminants. This is the main reason why O. viciifolia came back to the scientific agenda during the last years.
Tannins are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids.
The Chaco National Park is a national park of Argentina, located in the province of Chaco. It has an area of 150 km2. It was created in 1954 in order to protect a sample of the Eastern Chaco, composed mainly of warm lowlands, with an annual summer rainfall between 750 and 1,300 mm.
Copo National Park is a federal protected area in Santiago del Estero Province, Argentina. Established on 22 November 2000, it houses a representative sample of the Dry Chaco biodiversity in average state of conservation. Located in the Copo Department, it has an area of 118,118 ha.
Schinopsis lorentzii is a hardwood tree known as red quebracho, native of the Paraguayan subtropical area, which forms forests in Gran Chaco region of Argentina, in Paraguay, and Bolivia. Some of its common names are coronillo, quebracho Cornillo (Brazil), quebracho chaqueño, quebracho colorado santiagueño, quebracho macho, and quebracho bolí. The qualification colorado ("red") differentiates it from other species of common quebracho tree, the Aspidosperma quebracho-blanco. The indication santiagueño is made to distinguish it from quebracho colorado chaqueño, a closely related species.
Schinopsis balansae is a hardwood tree known as willow-leaf red quebracho which forms forests in the subtropical Gran Chaco ecoregion of north-eastern Argentina, and Paraguay. It is also found in the wild Pantanal vegetation in Brazil. Some of its vernacular names are quebracho colorado chaqueño and quebracho santafesino. Other species, like Schinopsis lorentzii, bear the general name quebracho and have similar properties and uses. S. balansae shares its habitat with a species of the same genus, S. heterophylla, and the two are often confused.
Acacia mearnsii
The phenolic content in wine refers to the phenolic compounds—natural phenol and polyphenols—in wine, which include a large group of several hundred chemical compounds that affect the taste, color and mouthfeel of wine. These compounds include phenolic acids, stilbenoids, flavonols, dihydroflavonols, anthocyanins, flavanol monomers (catechins) and flavanol polymers (proanthocyanidins). This large group of natural phenols can be broadly separated into two categories, flavonoids and non-flavonoids. Flavonoids include the anthocyanins and tannins which contribute to the color and mouthfeel of the wine. The non-flavonoids include the stilbenoids such as resveratrol and phenolic acids such as benzoic, caffeic and cinnamic acids.
Phlobaphenes are reddish, alcohol-soluble and water-insoluble phenolic substances. They can be extracted from plants, or be the result from treatment of tannin extracts with mineral acids. The name phlobaphen come from the Greek roots φλoιὀς (phloios) meaning bark and βαφή (baphe) meaning dye.
Prorobinetidins are a type of condensed tannins formed from robinetinidol. They form robinetinidin when depolymerized under oxidative conditions.
The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-pentagalloyl glucose. Ellagitannins differ from gallotannins, in that their galloyl groups are linked through C-C bonds, whereas the galloyl groups in gallotannins are linked by depside bonds.
Casuarictin is an ellagitannin, a type of hydrolysable tannin. It can be found in Casuarina and Stachyurus species.
Quebracho is a common name in Spanish to describe very hard wood tree species. The etymology of the name derived from quiebrahacha, or quebrar hacha, meaning "axe-breaker".
Unitán is an Argentine company producing quebracho tannins. Its production amounts to 40.000 tonnes of tannins sold to the tanning industry, the drilling industry, for the enological applications and as animal food.
Quebracho is an Argentine 1974 film directed by Ricardo Wullicher. It tells the story of "La Forestal," an English company extracting Quebracho trees between 1900 and 1963 in the northern province of Santa Fe. The wood and its main product, tannin, were highly coveted between 1918 and 1945 and became a focal point of political and social struggles connected with the evolution of trade unionism, as well as the emergence of the Radical Civic Union and Peronism. It is considered an iconic film of its period, if now somewhat dated.
Tannosomes are organelles found in plant cells of vascular plants.
Sociedades anónimas inscrito de capital abierto (S.A.I.C.A.) is a type of companiesy in Argentina.
