Chapter 2 Flashcards
T/F: Perception refers to an organism’s immediate neurological response to a stimulus in the environment
False. Sensation does that.
T/F: Sensory stimuli in wine are restricted to being either chemical or physical “activators”
False. Stimuli can also be thermal.
The smallest concentration of a wine component required for a taster to name it-“By jove, that’s sweet!-is called the _____
Recognition Threshold
Refer to the label De Loach Vineyards Estate Bottled Russian River Valley Gewurztraminer 1987 Early HArvest. Given that “residual sugar 1.2% by wt” is about 1.2 grams per 100ml, this wine would taste sweet to
50% of people. 1.2 grams per 100ml is close enough to the perception threshold of 1 gram per 100ml that the best answer on the list is 50%
T/F: Winetasting focuses on a relatively narrow range of existing colors
False. In winetasting we take advantage of a large part of our capacity to distinguish a wide range of colors from yellow-greens to brick reds and purples
T/F: Wine sensory components such as color which evoke pleasure in and of themselves are said to have a hedonic quality
True
What sensory quality would NOT be expected from the clue “A white wine is very pale and nearly colorless” ?
intense fruit aromas
T/F: OVerall quality in red wines is correlated with total color and pigment content
True
T/F: Our appreciation of wines is mainly due to their odors
true
T/F: Flavors are actually odors–or “in-mouth smells”– that reach our olfactory epithelium when we hold the wine in our mouths
True
T/F: The maximum sensitivity of our sense of smell has been estimated at one part per 10,000
False, Its one part per million to several parts per trillion
T/F:IT has been estimated that the average person can learn as many as 200 odors
False, The estimates suggest we can learn about 1000 odors. Wine has about 200 odors
T/F: The sensory organ for the senes of smell is located at the top and rear of the nasal cavity and about 5-10% of the air raches it in normal breathing
True
What is the retro-nasal route
It is the passageway from the rear of the mouth and rear nasal passages to the olfactory epithelium
T/F:We can only smell volatile molecules that can evaporate from the surface of a wine at the range of temperatures at which it is customarily served
True
Which of the winetasting activities below is not done to enhance a taster's ability to experience the wine's odors?: Sniff deeply swirl the wine in the glass hold the wine against a white background warm the wine in the mouth draw air through the wine sneeze
hold the wine against a white background
T/F: Winetasters may find that a wine’s odors are stronger and more pleasant when they are experienced in the mouth as flavors rather than as odors entering the olfactory area in inhaled air
True
Which taste quality is very rare in wines?
salty
When is the mechanism of taste dependent on saliva
to be tasted, a solid substance must be dissolved in the saliva. Without saliva to dissolve the substances that produce taste stimuli, we could only experience touch sensations with our mouths.
Where are the papillae located that have very few taste buds in them?
on the tongue’s top surface
T/F: We should question the accuracy of the taste bud map of the tongue because we don’t taste sweet or sour or bitter or salty in just one place
True
At a gross level we are most sensitive to which taste quality?
bitterness
Which item on the list below is not perceived in wine with your sense of touch? bubbles of carbon dioxide high amounts of alcohol thickness or body acidity astringency
acidity
When the stimulus alcohol is present in high amounts in a wine, you can expect to experience both a taste and a tactile sensation. These sensations are
sweet, hot