Sugar and milk are often added to coffee, which is easy to deteriorate if not finished immediately, and sugar is the favorite of bacteria! It is recommended to use stainless steel thermos cups for coffee to reduce bacterial growth, but it is best to buy and drink it now!
Can I have coffee all night?
As for whether coffee can be drunk overnight, whether it is overnight water or overnight coffee, leaving it for too long will lead to the deterioration of water quality. If boiled water is boiled many times, it will lead to the increase of nitrite content in water, and so will coffee, so it is not recommended to drink repeatedly heated coffee.
In addition, the aroma components of coffee are complex and diverse, containing more than 900 different aroma substances, which will be released after heating and destroyed when exposed to light and oxygen. Therefore, if the coffee is kept for a long time, the fragrance will not be as strong as when it is fresh. The aroma components of coffee are the reasons why coffee makes people feel happy, concentrate and improve work efficiency. The original refreshing effect of coffee without aroma components is greatly reduced. Therefore, drinking coffee overnight is not recommended.
Milk goes bad easily, and coffee is not fresh overnight.
The first reason is that milk is rich in protein, which is easy to deteriorate or even rot. Everyone knows that fresh milk should be drunk as soon as possible after leaving refrigeration, but they ignore that lattes also contain a lot of milk. Whether it is an iced latte or a hot latte, it will go bad if it is kept at room temperature for a long time. Therefore, if the latte has been left on the table for several hours, even if it is put in the refrigerator afterwards, it has actually gone bad, which may cause gastrointestinal problems such as diarrhea.
If sugar or milk is added to coffee, it is more likely to deteriorate and breed bacteria.
Sugar is the favorite of bacteria. Overnight coffee was full of bacteria.
As for the second reason, nutritionist Song Minghua pointed out that sugar is the favorite nutrient of bacteria. If the sweetened coffee is left idle for too long, it will be carefully turned into a Petri dish for bacteria. Even if it is stored in the refrigerator, don't forget that the refrigerator is not sterile, and coffee cups are usually not sealed, which will constantly breed bacteria.
Freshly brewed coffee is fresh only when you drink it now, and its taste and flavor are also at their best.
It is best to use thermos cups to strengthen the preservation of fresh cooking and drinking.
In short, overnight coffee will be greatly reduced in terms of sanitary conditions and taste and flavor. Remind everyone that coffee is best cooked and drunk now! If you really can't finish it all at once, you can put the coffee in a stainless steel thermos cup and use its sealing and heat preservation characteristics to reduce the growth of bacteria. However, it is better to put it in a thermos than at room temperature. Not that it can be preserved for a long time, but that it should be drunk as soon as possible to be healthy!