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Topics related to "tannin"

tannin
tannin   tannic acid, or gallotannic acid, astringent vegetable product found in a wide variety of plants. Sources include the bark of oak, hemlock, chestnut, and mangrove; the leaves of certain sumacs; and plant galls. Tannin is also present in tea, coffee, and walnuts. A solution of ta... Read more
gallic acid
gallic acid or 3,4,5-trihydroxybenzoic acid , C 6 H 2 (OH) 3 CO 2 H, colorless crystalline organic acid found in gallnuts, sumach, tea leaves, oak bark, and many other plants, both in its free state and as part of the tannin molecule (see tannin ). Since gallic acid has hydroxyl groups and a ca... Read more
bracken
bracken or brake, common name for a tall fern ( Pteridium aquilinum ) with large triangular fronds, widespread throughout the world, often as a weed. It is considered poisonous to livestock when eaten in quantity, but the rootstocks and the young shoots, cooked, are used for food. Bracken is al... Read more
Resistencia
Resistencia , city (1991 pop. 291,083), capital of Chaco prov., NE Argentina. It is the nucleus of an area of frontier settlements extending into the sparsely inhabited northwest. The city carries on a lively trade from its port, Barranqueras, on the Paraná River. Cotton, cattle, lumber, queb... Read more
cider
cider in Europe, fermented juice of apples; in the United States, unfermented apple juice, unless allowed to ferment, in which case it is known as hard cider. Selected apples are grated in a mill, and the juice is expressed and, for hard cider, fermented and filtered. The commercial product is usua... Read more
sumac
sumac or sumach , common name for some members of the Anacardiaceae, a family of trees and shrubs native chiefly to the tropics but ranging into north temperate regions and characterized by resinous, often acrid, sap. The sap of certain of these plants—especially poison ivy and related s... Read more
bark
bark outer covering of the stem of woody plants, composed of waterproof cork cells protecting a layer of food-conducting tissue—the phloem or inner bark (also called bast). As the woody stem increases in size (see cambium ), the outer bark of inelastic dead cork cells gives way in patterns c... Read more
chestnut
chestnut name for any species of the genus Castanea, deciduous trees of the family Fagaceae ( beech or oak family) widely distributed in the Northern Hemisphere. They are characterized by thin-shelled, sweet, edible nuts borne in a bristly bur. The common American chestnut, C. dentata, is nati... Read more
dogwood
dogwood or cornel , shrub or tree of the genus Cornus, chiefly of north temperate and tropical mountain regions, characteristically having an inconspicuous flower surrounded by large, showy bracts which are often mistaken for petals. This trait is evident in the flowering dogwood ( C. florida ... Read more
tanning
tanning process by which skins and hides are converted into leather . Vegetable tanning, a method requiring more than a month even with modern machinery and tanning liquors, employs tannin; its use is shown in Egyptian tomb paintings dating from 3000 BC Mineral tanning includes tawing, or alum tan... Read more

Encyclopedia entries related to "tannin"

tannin
Book article from: The Columbia Encyclopedia, Sixth Edition tannin tannic acid, or gallotannic acid, astringent...leaves of certain sumacs; and plant galls. Tannin is also present in tea, coffee, and walnuts...gallotannic acid is obtained from plant gall. Tannin varies somewhat in composition, having...
Wine: Overview
Encyclopedia entry from: Encyclopedia of Food and Culture ...which contains color pigments, flavors, and tannins. The skin also carries wild yeasts that occur...winemaking, are the stem (which contains tannins) and the seeds or pips (which contain tannins and bitter oils). Tannins are compounds...
Witch Hazel
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine ...and dried bark and twigs. Tannins and volatile oils are the primary...its astringent benefits. The tannin content of witch hazel leaves...the bark will yield a higher tannin concentration than that from...Asia indicates that it is the tannin content of witch hazel that...
Cashew family (Anacardiaceae)
Encyclopedia entry from: The Gale Encyclopedia of Science ...and processed as a source of tannins, chemicals that are useful...as its leaves can have a tannin concentration of 20 –...actually cultivated as a source of tannins, and it produces a superior...another important source of tannins, which are obtained from the...
Yellow Dock
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine ...dock contains anthraquinone glycosides, tannins, rumicin, and oxalates, including potassium...and phosphorus . It even contains enough tannin to use in tanning leather. Other uses...use yellow dock, since the oxalates and tannins present in yellow dock may aggravate that...
Bark
Encyclopedia entry from: The Gale Encyclopedia of Science ...a group of organic chemicals known as tannins, which can be reacted with animal skins...very useful material known as leather. Tannins will also react with certain metal salts...printing and dyeing. Major sources of tannins in North America are the barks of hemlock...
wood
Book article from: World Encyclopedia ...and is generally filled with resin , gums, mineral salts, and tannin . The two chief types are softwoods from conifers , such as pine...and as a source of charcoal , cellulose , essential oil , lignin , tannins, dyes, and sugar .
Oak
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine ...with similar healing qualities. Oak bark contains saponins, tannins, calcium oxalate, starch, glycosides, oak-red, resin...acorns was also a part of the diet of Native Americans. The tannin in oak bark is used in leather preparation. Cork is made from...
Rhubarb Root
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine ...mucous membranes of the intestines and improve their tone. The tannins that are also found in the root may eventually cause binding...stop the progression of chronic renal failure. One of the tannin components of rhubarb root, lindleyin, has been shown to...
White Willow
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine ...influenza . How white willow works The inner bark contains tannins, flavonoids, phenolic glycosides, and anti-inflammatory and fever-reducing salicylates. The high concentration of tannins may be responsible for relieving gastrointestinal disturbances...

Dictionary entries related to "tannin"

catechin tannins
Book article from: A Dictionary of Food and Nutrition catechin tannins See tannins .
tannin
Book article from: A Dictionary of Biology tannin One of a group of complex organic chemicals commonly found in leaves, unripe...animals, or they may help form barriers against the entry of pathogens. Some tannins have commercial uses, notably in the production of leather and ink.
tannins
Book article from: A Dictionary of Food and Nutrition tannins Compounds present in dark‐coloured sorghum, carob bean, unripe fruits, tea, etc.; they have an astringent effect in the mouth, precipitate proteins, and are used to clarify beer and wines. Also called tannic acid and gallotannin.
Leather and Leather Products Industry
Dictionary entry from: Dictionary of American History ...large vats by the chemical action of the tannin-bearing bark of hemlock, sumac, or...including steam-driven mechanisms to feed tannin and stir hides. Chemical processes changed more slowly. Tannin extract substituted for bark after 1890...
tan
Book article from: The Oxford Pocket Dictionary of Current English ...bark of oak or other trees, bruised and used as a source of tannin for converting hides into leather. ∎  (also spent tan ) such bark from which the tannin has been extracted, used for covering the ground for walking...
tyloses
Book article from: A Dictionary of Plant Sciences ...ingrowths developed from adjacent parenchyma cells that eventually cause blockage, Tyloses often fill with resins, gums, tannins, or other pigmented materials (some of which are used as dyes), giving the wood a characteristic colour.
cell wall
Book article from: A Dictionary of Plant Sciences ...notably celluloses , hemicelluloses , and pectins , as well as variable (but smaller) amounts of proteins , lipids , lignins , tannins , and even mineral salts. Cell walls provide a skeletal support to the whole plant and also a barrier against injury and infection...
cassina
Book article from: A Dictionary of Food and Nutrition cassina A tea‐like beverage made from cured leaves of a holly bush, Ilex cassine , containing 1–1.6% caffeine and 8% tannin .
Rhus
Book article from: A Dictionary of Plant Sciences ...are ornamentals. R. toxicodendron is poison ivy of N. America. R. verniciflua of China yields lacquer from the trunk and its powdered leaves yield tannin. There are about 200 species, occurring in tropical and warm temperate regions.
chillproofing
Book article from: A Dictionary of Food and Nutrition ...development of haziness or cloudiness due to precipitation of proteins when beer is chilled. Treatments include the addition of tannins to precipitate proteins, materials such as bentonite to adsorb them and proteolytic enzymes to hydrolyse them.

Thesaurus entries related to "tannin"

smack
Book article from: The Oxford American Writers Thesaurus ...trace, tinge, touch, suggestion, hint, overtone, suspicion, whisper. phrase: smack of   1. the tea smacked of tannin synonyms : taste of, have the flavor of.   2. the plan smacked of self-promotion synonyms : suggest, hint at...

Related newspaper, magazine, and trade journal articles from HighBeam Research

Tannins can tip the scales in a red wine's quality
Newspaper article from: The Record (Bergen County, NJ); 11/26/2008; ; 700+ words ; ...which can moderate tannins already there...consumers can manage tannin, too, by remembering...left of them! Tannins to the right...a fusillade of tannin is something regular...balance between tannin and fruit, but if the tannins are noticeable...
The tannin addition bandwagon.(cellar scene)
Magazine article from: Wines & Vines; 4/1/2006; ; 700+ words ; ...the prestige of tannin supplementation as well. If tannins were part of the...several types of tannins able to multi...primary uses for tannin additions are...lower value tannins, mainly during...of high quality tannin, more often for...
Tannin may be the world's favorite flavor.(Food)(Good wine)
Newspaper article from: Daily Herald (Arlington Heights, IL); 9/14/2005; 700+ words ; ...stems and in the process tannin, anthocyans and other phenols...has negligible color or tannin.) Martini describes fermentation's ebb and flow while tannin molecules bind together and break apart. "Smaller tannins create bitter flavor and...
TANNIN-BASED RESINS MODIFIED TO REDUCE WOOD ADHESIVE BRITTLENESS.
Magazine article from: Forest Products Journal; 9/1/2000; ; 700+ words ; ...the brittleness of the tannin-based adhesive joint...modification of the condensed tannins before reacting with...MATERIALS AND METHODS TANNIN ESTERIFICATION The commercial wattle-based tannin in the study contained 72 [+ or -] 2 percent tannins and 21 [+ or -] 1 percent...
Tannin's sensation and texture shape the taste of wines.(Food)(Good wine)
Newspaper article from: Daily Herald (Arlington Heights, IL); 9/28/2005; 700+ words ; ...previous column examined the science of tannin - phenolic compounds extracted from grape...maturation to polymerize and precipitate tannin molecules, all so the red wine you have...and 'astringent' taste good? First, tannin must be tasted; it's one of wine...
Toothsome tannin terms--part I.(scene)
Magazine article from: Wines & Vines; 2/1/2007; ; 700+ words ; ...the quality of the tannins. Dr. Doug Adams...quick and simple tannin assay, a way to...special quality to the tannins in a wine, it...As with all things tannin, of course, it...process that can move tannin from the hard to...that as wine ages, tannins form themselves into...
More on toothsome tannin terms.(cellar scene)
Magazine article from: Wines & Vines; 4/1/2007; ; 700+ words ; ...tannic" aromas, describes the tannins in some wines as tasting "metallic," and argues that tannins are responsible for the evolution...In Peynaud's analysis, tannin can display aroma, bouquet...characteristics to the chemical nature of tannins, to their degree of condensation...
Interactive effects of condensed tannin and cellulose additions on soil respiration.(NOTE)
Magazine article from: Canadian Journal of Forest Research; 10/1/2007; ; 700+ words ; ...substrates. We purified tannins from trembling aspen...crossed three levels of tannin additions with three...effects of purified tannins on soil respiration...respiration is likely tannin induced, while later...cellulose induced and tannin limited. Resume...processus du sol. Les ...
Do-it-yourself tannin assay: quick results aid decisions on picking, pressing and more.(research and production management of wineries)
Magazine article from: Wines & Vines; 6/1/2007; ; 700+ words ; ...correlate the sugars with the tannin to see how the juice tastes...fermented it. I'll measure tannin before I start aging the wine...measure the concentration of tannins contained in wine, grape or...consuming. The Harbertson-Adams tannin assay requires a spectrophotometer...
Occurrence and Location of Tannins in Finger Millet Grain and Antioxidant Activity of Different Grain Types
Magazine article from: Cereal Chemistry; 3/1/2007; ; 700+ words ; ...grain type on tannins, antioxidant properties, and tannin localization in...test and had high tannin content had a...indicating that the tannins were located in...variation in tannin content with grain...location of the tannins in the kernel...