Odor threshold value

Odor threshold value

Odor threshold value (=aroma threshold value, =OTV, =ATV)) is a measure of odor intensity of a substance. It is defined as a minimal concentration of that substance that can be detected by human nose.Some substances can be detected when their concentration is only few miligrams per 1000 tonnes which is less than a drop in olympic swimming pool.Odor threshold value can be expressed as a concentration in water or concentration in air.

Examples of some substances with strong odor.

*(Z)-8-tetradecenal (OTV = 0.009 ppb in water),
* p-vinylguaiacol (OTV = 10 ppb) [H.H. Baek, K.R. Cadwallader (1999) Contribution of Free and Glycosidically Bound Volatile Compounds to the Aroma of Muscadine Grape Juice Journal of Food Science 64 (3) , 441–444 doi:10.1111/j.1365-2621.1999.tb15059.x ]

See also:
* Odor detection threshold

References


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