Search Results - Tannin
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Tannins are astringent, bitter plant polyphenols that either bind and precipitate or shrink proteins. The astringency from the tannins is what causes the dry and puckery feeling in the mouth following the consumption of unripened fruit or red wine [1] Likewise, the destruction or modification of tannins with time plays an important role in the ripening of fruit and the aging of wine. The term tannin (from tanna, an Old High German word for oak or fir tree) refers to the use of wood tannins from oak in tanning animal hides into leather; however, the term is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups (such as carboxyls) to form strong complexes with proteins and other macromolecules. The compounds are widely distributed in many species of plants, where they play a role in protection from predation and perhaps also in growth regulation. Tannins have molecular weights ranging from 500 to over 9,000.[2] Tannins are incompatible with alkalis, gelatin, heavy metals, iron, lime water, metallic salts, strong oxidizing agents and zinc sulfate. Tannins are usually divided into hydrolyzable tannins and condensed tannins (proanthocyanidins).
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Showing 1 to 22 of 22 Articles matching 'Tannin' in related articles. |
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1. Leather Accessories and the Tanning Process
October 16, 2009
Leather Accessories and the Tanning Process Leather is a perfect material for making accessory items. The durability and appealing richness of leather make it the best choice for gloves, shoes, handbags, briefcases, belts, and jackets. The many techniques for creating leather products have existed for centuries, but their modern refinements have made today’s huge selection of fantastic leather items better than ever. There are several types of tanned leathers. Vegetable-tanned leather is treated with tannin and other ingredients found in vegetable sources. Tannin from tree bark was the m... (read more)
Author: Joanne Lithgow
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2. Tuscan Wine Harvest-the much anticipated grape harvest
September 24, 2009
We are approaching the most celebrated season of the year here in Tuscany- the much anticipated Vendemmia, or grape harvest. The annual vintage traditionally begins in late September or early October and draws the participation of most every Tuscan from the physical harvest itself to the endless array of festivals, feasts and local wine celebrations. The grape harvest is the most crucial part of the winemaking process and is begun in accordance with the the ripeness of the grape itself measured by its sugar, acid and tannin levels. Chianti, the Tuscan area that produces Chianti Classico win... (read more)
Author: Tuscany Rent Direct
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3. DIFFERENT TYPES OF TANNING FOR LEATHER PREPARATION
May 29, 2009
Leather is made from animal skins or hides which have been chemically treated to preserve quality and natural beauty. The chemical procedure used to ready raw animal hides for use is called "tanning."Tanning is the process of making leather, which does not easily decompose, from the skins of animals, which do. Often this uses tannin, an acidic chemical compound. Coloring may occur during tanning VEGETABLE TANNING Hides which have been tanned with a vegetable tanning agent solution produce flexible, but stiff leathers, such as those used in luggage, furniture, leashes, belts, hats, and harne... (read more)
Author: Faport International
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4. balenciaga messenger bags
May 19, 2009
As some previous balenciaga bags before its messenger bags come into nice calf leather. Women are bags lovers but if you have known completely about bags and their materials? That's something important. I am afraid you have to get know about materials before you can be able to choose your ideal bags with good quality. Leather play the most important role in bags actually. There are a number of processes whereby the skin of an animal can be formed into a supple, strong material commonly called leather. Vegetable-tanned leather is tanned using tannin and other ingredients found in vegetable mat... (read more)
Author: Urrutia Wendy
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5. Laundry Spot Remover
April 16, 2009
According to, Janis Stone, a specialist of clothing and textiles who is employed at Iowa State University, stains can be broken down into five categories: protein stains such as, human or animal bodily fluids; tannin stains: found in natural substances like tea or coffee; oil-based stains; dye stains, from fruit, crayons, or ink; and combination stains, any combination of two or more stain types. Each type of stain is molecularly different and because of this should be treated differently. Many types of laundry spot remover are available for this reason.
Most types of laundry spot remover... (read more)
Author: Vince Platania
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6. How To Make Red Wine
January 06, 2009
Among the many types of wine available, red wine is among the best. There are many types of red wine available, although most are made using the same methods. This very exhilarating type of wine is made from black grapes, drawing their color from the skins of the grapes.
During the beginning stages of making red wine, the grapes that have been picked are put into a crusher. Here, the crusher will gently break the skins of the grapes. Depending on what type of wine is being made and the tannin that's required, the stalks will either be used or discarded at this point. Next, the grapes ar... (read more)
Author: Jerry Shannon
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7. Rosé - Not Just A Drink For Summer
November 04, 2008
Rosé wine may be the perfect drink for summer but it’s also pretty good throughout the rest of the year. With Christmas around the corner, here’s why you should start stocking up!
Great for Drinks Parties and Pre-Dinner Drinks
Because Rosé is naturally low in tannin and acidity, it makes the ideal drink for welcoming guests to a party or dinner. A full-bodied red or zingy white will simply be too harsh on an empty stomach but a crisp rosé will make a nice, refreshing change from a light white or fruity red.
The Perfect Match for Food
Rose wine is the perfect all-rounder whe... (read more)
Author: Kristian Phillips
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8. Why It Is Important To Let Wine Breathe
October 24, 2008
As human beings, we need to breathe to live. The reason is rather obvious given our biology. In the world of food and drink, wine also needs to breathe although why is less clear to many people.
Before we get into the breathing concept, it is important to admit a few things. Wine has a culture all its own. It can be both geographic and class oriented. This element of haute culture can lead to a certain amount of intimidation when it comes to immersing yourself in the world of wine. Do not let it. The way to get around this intimidation is to educate yourself on why something is being done... (read more)
Author: Rick Chapo
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9. Making Red Wine
October 12, 2008
Among the many types of wine available, red wine is among the best. There are many types of red wine available, although most are made using the same methods. This very exhilarating type of wine is made from black grapes, drawing their color from the skins of the grapes.
During the beginning stages of making red wine, the grapes that have been picked are put into a crusher. Here, the crusher will gently break the skins of the grapes. Depending on what type of wine is being made and the tannin that’s required, the stalks will either be used or discarded at this point. Next, the grape... (read more)
Author: Nicholas Tan
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10. Malbec
October 10, 2008
Malbec is a grape that is famous for being a Bordeaux varietal. The wine is created from is a classic French grape vine that produces a bloody red beverage that in terms of taste is described as a cross between Merlot and a Cabernet Sauvignon. It’s very deep red color is very attracitve and it is known for its plum like aromas and high tannin content. Although it is sometimes drunk on its own, it is most well known for being one of the six grapes that are used in making the classify French Bordeaux wines. It s distinctive for its inky dark color and is named after the Hungarian peasant... (read more)
Author: Sarah Martin
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11. Choosing The Right Tea For You
September 08, 2008
The verdict is in: Tea is good for you. Now, researchers continue to study tea and its healthy constituents such as polyphenols, tannin, catechins and other antioxidants. The science is progressing on parallel tracks in research institutes and universities around the world, quantifying and qualifying the effects of tea on cancer, high blood pressure, cardiovascular health, microcirculation and even weight loss.
Beyond the health benefits, there are purely personal (and pleasurable) reasons to drink tea, and choosing the right one (or two, or three) for your particular life goals and well... (read more)
Author: Jeffrey Lorien
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12. Grenache Grapes - The Subtle Wine Giant
July 24, 2008
Grenache is most likely the most vastly planted variety of red wine grape in the world. It grows in dry, hot conditions like Spain, and the south of France, since it ripens late. Usually, it has a spicy, berry flavor and is soft on the palate with a relatively high alcohol content, but it does need careful control for the best results. Sometimes it lacks acid, tannin, and color, and is usually blended with other varieties such as Syrah, Carignan, and Cinsaut. Grenache is a dominant variety in many Southern Rhone wines especially in Châteauneuf-du-Pape where it is typically over 80% of the blen... (read more)
Author: Lindsay Alston
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13. Gotu Kola - Uses and Side Effects
March 18, 2008
Gotu kola has been widely used to treat a variety of illnesses, especially in traditional Eastern medicine. It's derived from the leaves, stem, and aerial parts of Centella asiatica. Gotu kola contains madecassol, madecassic acid, asiatic acid, asiaticentoic acid, centellic acid, centoic acid, isothankuniside, flavonoids including quercetin and kaempferol, and various glycosides such as asiaticoside, brahminoside, brahmoside, centelloside, and madecassoid. It also contains fatty acids, amino acids, phytosterols, and tannin.
Asiaticoside promotes wound healing, brahminoside and brahmoside ... (read more)
Author: Francis Adam
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14. Hyssop - Uses and Side Effects
March 11, 2008
Hyssop has been used for centuries as an herbal medicine. In ancient times it was used as an insecticide, insect repellant, and pediculicide. Hyssop is obtained from the dried above-ground parts, including leaves and flowering tops, of H. officinalis. The oil, which is used in flavorings and extracts, is also made from the above-ground parts of the plant. One of hyssop's glycoside components, marrubiin, stimulates bronchiole secretions. Hyssop has strong antiviral effects, probably because of the caffeic acid, tannin, and high-molecular-weight components present. It may have some activity agai... (read more)
Author: Francis Adam
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15. Wine Tasting 101 - What the Heck Does Oaky Mean?
February 10, 2008
The use of oak in wine plays a significant role in winemaking and can have a profound effect on the resulting wine, impacting the color, flavor, tannin profile and texture of the wine. Oak can come into contact with wine in the form of a barrel during the fermentation or aging periods. It can be introduced to the wine in the form of free floating oak chips or as wood staves (or sticks) added to wine in a fermentation vessel like stainless steel. Oak introduced in the ... (read more)
Author: Jennier de Jong
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16. Fresh Food Tips - Burdock
July 20, 2007
Burdock is very rich in minerals and nutrients including calcium, flavonoids, iron, tannin and potassium. It has traditionally been used for skin ailments such as excema, rheumatoid arthritis, cancer prevention and for its sugar-lowering properties. It is also believed, especially in places like Japan, to purify the blood and clean out toxins. To prepare burdock, it is best to scrub the outside, not peel it, so you don’t lose all those wonderful nutrients. It can then be cut into thin slices and crushed if you like as the Japanese do with the flat side of a knife (as you might crush a ga... (read more)
Author: Shelly Herman
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17. Defining a Great Wine for You
February 11, 2007
More than a few books have been written on the art of making the one great wine. Even more have been written and sold on recognizing it when you are tasting wines.
Defining a great wine requires a step back from the guides, terms and tasting technique proffered here and there. There is one reason and one reason only to drink a particular wine – you enjoy it! Okay, you might want to drink a wine the boss suggests, but you get my drift. Wine is meant to be enjoyed. A good wine versus a bad wine can be objectively identified, but most wines fall into a vaguer categorization.
I am not ... (read more)
Author: Xavier Modini
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18. Wine Jargon - Learning the Wine Language
February 11, 2007
If you start to take wine seriously, you will soon be immersed in a world with its own language. The question, of course, is what are the terms being used and what do they mean?
Wine is often viewed as a snobby hobby. This is often due to the nature of the terms used. When a person says the “aromatic balance” is serene, one can’t help but be a bit intimidated. Well, this is the language of wine whether you like it or not. To fit into the crowd and improve you knowledge of wine, it helps to understand some of the terms being used, so let’s jump right in.
Aerate – The process by which... (read more)
Author: Xavier Modini
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19. Get it Out! Tips for Clothing Stain Removal
October 24, 2006
Everyone has done it—spilled red wine on a favorite blouse, or forgot to police pockets for crayons or ball point pens before they hit the wash. Stains are everywhere, and there are many ways to get rid of them, from home remedies to manufactured products. With so many choices, so much advice, how do you know what to use on what?
It’s important to know your clothing.
Is it your stained clothing dry clean only, or hand-washable? Certain fabrics can be destroyed by the intended stain treatment. For example, silk and wool will be ruined by chlorine bleach. You’ll also want to know what ... (read more)
Author: Morgan Slater
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20. Get Ready for Higher Prices for Wines from Your Favorite California Wine Making Region
September 22, 2006
Get ready for higher priced higher quality boutique type wines from the California wine producing regions.
No region of the world has impacted the world of wine in the past half century than California.
While legendary European wines and winemakers have shaped wine history throughout history, the Golden State has undergone sweeping improvements in both quality and reputation like no other winemaking region.
Considering that Prohibition dragged California’s wine industry to its knees just 70 years ago, the st... (read more)
Author: Amy Goodmann
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21. How Red Wine is Made
June 30, 2006
Red Wine is made almost exclusively from black grapes, the colour coming from the skins.
Firstly, the picked bunches of grapes are put through a crusher, which carefully breaks the skins. Depending on the type of wine being made, and the amount of tannin required, the stalks may or may not be discarded at this stage.
Then the grapes are moved from the crusher into a fermentation vats with skins. Fermentation can take upto 4 weeks or longer to complete. The higher the temperature, the more colour and tannin is extracted.
To produce soft red wines, whole grapes are fermented in ... (read more)
Author: Jason Hulott
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22. DIY driftwood for your aquarium
May 29, 2006
DIY driftwood takes time, but it will save you tons of money. Some small pieces cost well over $20. Also, the soak method (minus salt) will work for store bought driftwood. Store bought driftwood is cleaned and has not been soaked. This may lead to tannin’s being leaked into your tank
What you’ll need: Driftwood, which can be found anywhere. It doesn't necessarily have to come from the water. You could find it in the woods, as long as it is weathered down and looks unique. Also make sure the wood is not rotting.
BIG soaking container, I use a 15 gal rubber maid container.
Aq... (read more)
Author: Tony Tsai
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