Figure 6. Naringin, a bitter-tasting glycoside.

astringency is due to tannins or polyphenols interacting with the proteins in the saliva to form precipitates or aggregates. Astringency may be a desirable flavor property, such as in tea and red wine.


Certain compounds (Fig. 7) found in several spices and vegetables cause characteristic hot, sharp, burning, and stinging sensations that are known collectively as pungency.

Cooling Effect

Cooling sensations occur when certain chemicals (Fig. 8) contact the nasal or oral tissues and stimulate a specific receptor. This effect is most commonly associated with mintlike flavors, including peppermint, spearmint, and wintergreen.

Sleeping Sanctuary

Sleeping Sanctuary

Salvation For The Sleep Deprived The Ultimate Guide To Sleeping, Napping, Resting And  Restoring Your Energy. Of the many things that we do just instinctively and do not give much  of a thought to, sleep is probably the most prominent one. Most of us sleep only because we have to. We sleep because we cannot stay awake all 24 hours in the day.

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