Modalities of taste
Modalities
of taste :-
- There are four fundamental sensations of taste are sweet,
salt,sour & bitter
- All other ‘tastes’ such as chocolate, pepper & coffee
are actually odour
- Each of four taste is due to different response of different
chemicals
- Tip of tongue is highly sensitive to sweet, anterior margin
to salt, posterior margin to sour & central portion to bitter taste
- Sweet taste is evoked mainly by organic substances such as
sugar , dextrines, glycerol, chloroform saccharine & aspartame
- Saccharine & aspartame are widely used as artificial
sweetning agent by patients of diabetes
- Salty taste results mainly from some cations like Na+ of
inorganic salts
- Sour taste is evoked by H+ ions produced by ionization of
acids
- Bitter taste is evoked by Many organic substances like
quinine , morphine, caffeine , nicotine & urea
- Bitter taste also produced by cations of Many inorganic salts
like magnesium salts
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