In fact, like other things, like wine, but also because of brewing, shipping and preservation of the poor and the bad. Just a bottle of wine is not bad, light to see the bottle is not necessarily useful (but there are some bad wine light to see the color of the wine bottle). So, if you want to know a bottle of wine is bad, must be open, seen, smelled, drink after know. But in the end wine why will be broken? Broken wine is what taste?
1. Wine there are volatile acid (wine volatile acid [Volatility]).
inside of volatile acid, is because the wine in acetic acid (acetic acid) and ethyl acetate (ethyl acetate).Volatile acid is a by-product of alcohol in wine brewing fermentation and lactic acid fermentation, usually has little effect on wine. But if wine with vinegar (acetic bacteria) bacteria and lactic acid bacteria (lactic bacteria inside, their wine is great, because they will wine alcohol changes for the volatile acid. Wine high content of volatile acids are strong pungent taste overshadowed other wine aroma and aftertaste in the mouth with intense burning like acetic acid, and sometimes there will be similar resin or to the aroma of light water, is easy to check to feel.
2. wine has been oxidized (Oxidation).The wine will be exposed to the air in the air, but in the wine, if the use of appropriate sulfur dioxide can avoid alcohol oxidation. Not all oxidation of wine, some wine (such as Spanish Sherry) characteristics is because alcohol is oxidized. The oxidation of alcohol has several reasons, the main reason is because of chemical oxidation and microbial oxidation of two. Chemical oxidation is due to the absorption of oxygen in the wine, and the wine inside the phenol (phenol) to produce a chemical effect, leading to the loss of its flavor, taste and color. It is because of the microbial oxidation of lactic acid bacteria because of oxygen to alcohol into acetic acid and ethyl acetate.Other enzymes that are attached to the grapes also affect the wine, but they can be avoided only when they make a wine. Oxidation of white wine will soon become dark, fragrance and taste will disappear, even if the smell and taste is not completely disappeared, the overall feeling of the wine will be changed. Red wine is not oxidized, but oxidation of red wine color will become brown or dull, fragrance containing acetaldehyde (similar to decay, bitter oily smelly flavor) and fruit flavor will gradually disappear.
3. wine contains sulfide (Sulphide) and thiol (mercaptans).Hydrogen sulfide, hydrogen sulphide production mostly because the farmer in order to prevent the growth of grape disease and in the vineyard spraying the remnant of the sulfur, copper, and lime. Not only that some wineries are still in use sulfur cleaning and disinfection of oak barrels, the residual sulfur will therefore remain in oak barrels at the end. The yeast species used in making wine also affects the amount of hydrogen sulfide in the wine. Generally speaking, hydrogen sulphide has little effect on, just a little more sulfur smell fragrance (a rotten egg smell). But if you do not deal with the case of hydrogen sulfide will become a thiol, as long as a little bit of the wine in the wine will be easy to find.It will the smell and taste of wine into a coke rubber smell, the smell of asphalt, putrid meat and rotten garlic flavor and leather taste is nausea taste and mouth will have bitter and astringent taste.
4. other reasons
if the smell and taste of the wine is a bit of a stale or stale flavor, it is possible that the Trichloroanisole (TCA), which means that this bottle of wine may have a cork flavor (corked). The production of TCA may be due to the cork in the bottle, which has been infected by bacteria or the relationship between the long mold of the oak barrel. In addition if the wine inside, burning ammonia, mice excrement beans smell it,There may be a relationship between Brett and yeast. If there is such a situation in the wine is probably not good wine. In addition to champagne and sparkling wine, if other wines, especially red wine has a lot of bubbles in the wine, the situation is not good, is not suitable for drinking. In addition a lot of wine in when opening a bottle cork with crystal (crystal), this is because the wine before bottling no after cooling crystallization (cold stabilization) procedures, in addition to the mass production of wine winery outside most of the wineries tend not to do so, these crystals and does not affect the wine taste.
The next time the wine has more than the taste, the wine has gone bad can not drink!!!!
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