sour

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Related to sourness: saltiness

sour

1. made acid or bad, as in the case of milk or alcohol, by the action of microorganisms
2. (esp of the weather or climate) harsh and unpleasant
3. (of oil, gas, or petrol) containing a relatively large amount of sulphur compounds
4. Chiefly US any of several iced drinks usually made with spirits, lemon juice, and ice

sour

[sau̇r]
(chemistry)
Containing large amounts of malodorous sulfur compounds (such as mercaptans or hydrogen sulfide), as in crude oils, naphthas, or gasoline.
References in periodicals archive ?
Odorants, inducing olfactory perception, could strongly modulate taste perception, such as enhancing or reducing bitterness, sweetness, and sourness [6,36].
The analysis of the sourness (Table 3) revealed that gelatin-stabilized yogurt with both non-ropy and ropy cultures recorded the highest sourness scores (9.38 and 7.14 points), followed by HMP-stabilized yogurt with both nonropy and ropy cultures that sourness score was (8.30 and 6.42 points).
"Sourness [sic] the rules are u kick out u should be off.
This sourness is a result of the fermentation process used in preparing the dough and the proportion of liquid to flour.
Caper's approach to getting everyone to love him results in only bitterness and sourness. A rollicking, fun story ensues.
The new White Grape Flavor is noted for its mellow and refreshing taste compared to the existing Grapefruit and Peach Flavor, and is even recommended for those people who have a slight aversion to sourness. Furthermore, the drink is also low in calories at only 55kcal per bottle, and its colorful, pop art packaging was designed with the female consumer in mind.
Sourness and bitterness often meant food was spoiled or contained toxins and were a warning sign not to eat it.
The new variety has high nutritious contents, less sourness due to higher 1:14 ratio of sourness-sweetness.
The gas from Kidan is similar in sourness to the Shah gas field in Abu Dhabi, so infrastructure will have to be built which can process sulphur.
A constituent of mine asked, 'Why is it that if I lived in Scotland, I would have free medicines, free long-term care and my children would go to university without paying the fees they pay in England?'' A general sourness will enter into English politics - and we will not be able to judge where that sourness will lead us.
The growth of lactic acid bacteria stimulated by slow drying of grains added sourness to the brew.
In 2009, a group led by Charles Zuker of the University of California, San Diego and Nicholas Ryba of the National Institutes of Health showed that carbonation trips cells in the tongue that convey sourness.