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The etymological root of the term rancid takes us to the Latin word rancĭdus. The concept is used with reference to food of high fat content whose organoleptic properties they find each other altered by the passage of time .

A stale product , in this way, acquires a intense aroma and a flavor very strong that they are not pleasant . The rancidity is generated by the hydrolysis wave oxidation of some of the components.

A food becomes rancid from the changes that are registered in oils and fats when exposed to certain environmental conditions (temperature , humidity, etc.). In the case of the hydrolytic process, triglycerides break down into glycerin and fatty acids. The oxidative process, meanwhile, results in the generation of ketones, aldehydes and other substances.

It's important to keep in mind that, when a meal gets rancid, it doesn't just change its flavor. As well lose vitamins and you can even acquire a degree of toxicity due to chemical alterations.

A stale wine On the other hand, it is the one that was preserved and left to age for a prolonged period exposed to the sun. Unlike what happens with stale fatty foods, the came It does not suffer negative changes nor is it in poor condition.

Exposure to the sun's rays for at least one year causes the wine to age rapidly. Temperature variations also affect the characteristics of stale wines, which have a high alcohol content.

He adjective rancid, finally, is used symbolically to qualify what has a broad tradition or, in a way derogatory , to what it is typical of past times and not adequate or right for the present . For example: "I don't understand how a young man can have a rancid thought about these issues", “I grew up in a town of stale customs”, "The rancid speech of the candidate generated a lot of criticism".

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