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Related Flashcards
Cards In This Set
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Name 5 Sources of wine aroma?
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What fault causes a musty, moldy odor like a dank basement?
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2,4,6 Trichloroanisole (TSA) also known as cork taint or corked.
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What causes cork taint?
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Mold on the bark of the cork tree, on the winemaking implements or even in the winery. The moldy interacts with other elements to create the chemical TCA.
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True or false, even wines that have screw caps or artificial corks can get cork taint.
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True. TCA is highly persistent and can get into barrels, cardboard boxes or even the winery walls.
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What are the estimates of the percentage incidence of cork taint?
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1% to 10%.
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How low of a concentration of TCA can be detected in the aroma of a wine?
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2 to 7 parts per trillion.
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What are 3 sulfur based compounds that can cause odors in wine?
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True or false, the sensory effects of Sulfur Dioxide increase with higher levels of acid.
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True.
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What fault causes the smell of burnt matches?
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Sulfur Dioxide (SO2)
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What fault can cause a sense of burning in the throat and nose?
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Sulfur Dioxide (SO2)
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What causes the development of Hydrogen Sulfide (H2S)?
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When a sulfur-rich wine sits too long in the complete absence of oxygen. (Also known as a REDUCTIVE fault). This can happen when yeast sediment remains in wine too long or sometimes with wines with screw caps that don't allow any oxygen.
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What faults causes the odor of rotten eggs?
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Hydrogen Sulfide (H2S)
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What fault might develop in screw cap wine due to lack of oxygen getting through the cap?
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Excess Hydrogen Sulfide (H2S)
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What fault causes the odor of garlic, onions or cabbage?
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Mercaptan.
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What causes mercaptan?
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Ethyl Mercaptan is the combination of sulfur and ethanol.
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