Wine faults

Question 1

What are the odors related to cork taint or a corked wine

Answer 1

Musty, moldy odor similar to dank basement

Question 2

What causes cork taint

Answer 2

A mold that grows on the bark of the cork tree

Question 3

What does mold do in a wine

Answer 3

It interacts with other components of wine and generates a chemical known as 2,4,6 TCA

Question 4

Can TCA transfer into wine if it is in the winery environment

Answer 4

Yes it can be transfer into wines even when the wines are sealed with screw caps

Question 5

What concentrations of TCA are detectable by humans

Answer 5

2-7 parts per Trillion

Question 6

Name the odors resulting from sulfur compounds

Answer 6

Sulfur dioxide, hydrogen sulfide, mercaptan

Question 7

What odors does sulfur dioxide give out in wine

Answer 7

High concentrations of SO2 gives out smell of burnt matches

Question 8

If the wine is highly acidic, SO2 will be

Answer 8

More pronounced

Question 9

When a sulfur rich wine sits for too long in absence of oxygen, it develops odor of

Answer 9

Rotten eggs

Question 10

What causes the odor of rotten eggs in wine

Answer 10

Hydrogen sulfide(H2S)

Question 11

Problem of H2S is more prominent in

Answer 11

Wines closed with screw caps and in a barrel where wine rests for long with lots of yeast sediments

Question 12

What odor is related with Mercaptan

Answer 12

Garlic or onions

Question 13

What causes ethyl mercaptan in wine

Answer 13

Combination of sulfur and ethanol

Question 14

Mercaptan is used in

Answer 14

Odorless gases to detect leak

Question 15

Name the odors caused from bacteria

Answer 15

Acetic acid, butyric acid, lactic acid, ethyl acetate, geranium

Question 16

What odor does acetic acid give

Answer 16

Vinegar

Question 17

Butyric acid gives odor of _____

Answer 17

Rancid butter or spoiled cheese

Question 18

What odor does lactic acid gives to a wine

Answer 18

Odor of sauerkraut or goat

Question 19

Odor of nailpolish remover or model airplane glue describes what

Answer 19

Ethyl acetate

Question 20

Ethyl acetate is formed through the reaction of

Answer 20

Ethanol and acetic acid

Question 21

Incomplete MLF leads to odor of

Answer 21

Crushed geranium leaves

Question 22

Brett is short for

Answer 22

Brettanomyces, a member of yeast family

Question 23

What are the odors related to brett

Answer 23

Odors like sweaty or horsey, band-aid like or medicinal

Question 24

What is odor related to green and where does it come from

Answer 24

Like leaves, usually resulting from the use of under ripe grapes

Question 25

Oxidized means

Answer 25

Oxygen from air dissolves in wine that has been exposed to air

Question 26

Where does acetaldehyde come from

Answer 26

When oxygen reacts with phenolic compounds in wine, oxidative reaction creates acetaldehyde

Question 27

Deliberate oxidation is used in

Answer 27

Fino sherry production

Question 28

Oxidation gives wine _____ aromas

Answer 28

Nutty and caramelized character

Question 29

What is the negative effect of oxidation on wine

Answer 29

Lack of fruit character and browning of wine

Question 30

What is Maderized

Answer 30

It is a cooked or a baked odor, resulting from excessive heating or oxidization

Question 31

Maderization is acceptable in making _____

Answer 31

Madeira

Question 32

Moldy odor is comes from

Answer 32

Use of moldy grapes or moldy barrel

Question 33

Odor of rubber is related to

Answer 33

Very low acid wines or excess sulfur

Question 34

What is a stemmy odor

Answer 34

bitter and green odor of grape stems

Question 35

The odor of wet cardboard is associated with

Answer 35

Corktaint or misuse of filter pads or filtering materials

Question 36

A papery chemical odor best describes

Answer 36

Wet cardboard

Question 37

Yeasty and leesy odor comes from

Answer 37

This odor may develop if the wine remains in contact with the yeast cells for too long.

Question 38

Can yeasty odor be acceptable in any wine

Answer 38

It is acceptable for Sparkling wines and wines that are intentionally aged on lees

Question 39

Define reduction

Answer 39

A term that refers to a smell of rotten eggs, garlic, cabbage, burnt rubber or struck matches. It develops in conditions that lack oxygen

Question 40

A stale water odor refers to

Answer 40

Stagnant