chapter3 sensory evaluation Flashcards
what are supertasters?
genetics makeup, health conditions and experiences allow them to identify subtle difference in flavor and aroma.
how many taste buds does supertaster and non tasters have?
1100 per square cm
40 per square cm
what influence bitter taste?
women’s hormone cycle.
higher certain hormone cause bitter tastes more intense.
所以怀孕味蕾会变化
what is hue?
basic color: red blue green
what is value?
lightness or darkness of the clor
what is chroma
how intense the color is
what is taste related to?
the shape of molecule in the food, bind to the taste bud.
what is astringency?
the ability of a substance to draw up the muscles in the mouth
how temp influence flavor?
warmer, more intense
what are babies born to like?
sweet taste
what is olfactory bulb?
bundle of nerve fibers
what are 2 pathways to reach olfactory bulb?
nostril
back of mouth
what is chewiness?
how well one part of a food slides past another without breaking
what is graininess?
size of the particles in a food product
what is brittleness
how easily food shatter or breaks apart
what is firmness?
food resistance to pressure
what is consistency?
thinness or thickness of a product
what does compression machine do?
measure food texture
measure how much pressure it takes to compress food compared to another–modify ingredients or processing procedures to provide standard texture for a food product
what does penetrating probe do?
measure food texture
determine beef quality
what is taste test panel?
a group of people who evaluate the flavor, texture, appearance and aroma of food products.
can be either professionals or untrained consumers
where does trained professional need?
federal and state grading of butter and cheese
what is consumer taste panels?
what average consumer will prefer.
how to prevent psychological biases?
use 3 digital number.
place sample with different order
because most people prefer from low to high numbers and prefer the first order.
how does food manufactures know why panel members give a product low rating?
combined with descriptive observations.
