Have you ever opened a beer bottle, poured it into a transparent glass and left it in the sun, then returned to get it and realized that the taste is no longer the same?

What really happened?

This strange taste is actually from a chemical composition that smells similar to that produced by pus, reports Telegrafi.

Even Chuck Skypeck from the Association of Beer Producers, which owns and manages the brewery for 21 years, said that the cause of the process that influences the change of beer taste was not understood until the 60s of last century.

When beer viburnum is exposed to strong light, a photoxidation reaction occurs, creating the compound 3-methyl-2-butene-1-thiol, writes CNN.

To prevent this process from happening, brewers have chosen the darkest glass of beer bottles.

That's why you see so much beer in brown glass bottles today.

"It's a simple reaction that creates what most people think is an undesirable taste," Skypeck said.

Hence the popular choice among brewers - the brown bottle.

But this is not the only color that can be seen with beer bottles, some beers even come in bottles, the glass of which is green.

What lies behind this election?

Since green does not have such a protective role when it comes to light, the reason for using it is primarily marketing, says Skypeck.

"If you look at which brands use green glass bottles, you will see that they are mostly brands that have been on the market for a long time," he said.

He added that a considerable number of European breweries use green glass.

Green bottles are their image.

Glass as a packaging material versus plastic, is considered more environmentally friendly, looks better on consumers, also prevents beers from stale.

Canapes are also a popular choice for packaging and do not let light penetrate.

More studies are needed in this area, according to Skypeck, to determine which packaging is optimal to prevent changes in taste.

As for other guidelines for storing beer to prevent the process that changes the taste of beer, Skypeck has one simple rule: cold and dark.

"Beer is basically water, barley, sometimes wheat, malt and yeast - it's a food product.

"And like any other food product, it is subject to loss of freshness," he said.

Skypeck added that "what really makes any food product lose its freshness, in addition to this photochemical reaction, is exposure to oxygen and exposure to high temperatures."

/ Telegraphy /