Chemistry of Taste Flashcards
(32 cards)
What happens when food molecules dissolve in silva?
it activates taste simulators in the mouth
Does the brain interpret simulators that create taste?
yes
Where are taste buds located?
papillae
What are the 5 types of taste receptors?
salty, sweet, sour, umami, bitter
What kind of threshold do sweet and salty tastes have?
high
What kind of thresholds do sour tastes have?
low
What do taste cells release?
neurotransmitters
What is sour taste?
generally measures pH, Hydrogen ions
What is salty taste?
sodium and potassium ions, ions accentuate flavours
What is bitter taste?
cellular response to bitterness complex is relatively slow
What is sourness directly correlated to?
pH
What happens to pH as something is more acidic?
lower pH
What is the Arrenhius definition of an acid?
produces H+ ions in solution
H+ is synonymous with a proton
What is the Arrenhius definition of a base?
produces OH- in solution
What is a neutral pH?
7
Are acids or bases more concentrated?
acids
How many times more concentrated is 10^6 than 10^7?
10 times
What do strong acids and strong bases do in solution?
completely dissociate
will only have ions in solution, no compounds
What do weak acids and weak bases do in solution?
weakly dissociate
can have ions as well as compounds in solution
What are the strong acids?
HCl, HBr, HI, HNO3, H2SO4, HClO4
What are the strong bases?
LiOH, NaOH, KOH, Ca(OH)2, Sr(OH)2, Ba(OH)2
What is the pH equation?
pH=-log[H+]
Can acidity be negative on the pH scale?
yes
Can solutions be infinitely concentrated?
no, there is a limit as to how much a solute can dissolve in solution
