Does microwaving coffee decreases or neutralizes the caffeine in it?

Here's why:

* Caffeine is a heat-stable molecule: Caffeine is a robust molecule that can withstand high temperatures without breaking down significantly.

* Microwaving heats the water: The main effect of microwaving coffee is to heat the water, not to alter the chemical structure of the caffeine.

However, it's important to note that:

* Microwaving can affect taste and aroma: While caffeine isn't affected, microwaving coffee can cause some of the volatile compounds responsible for its taste and aroma to evaporate. This can result in a less enjoyable cup of coffee.

* Overheating can burn the coffee: If you microwave coffee for too long, it can burn, which can create a bitter and unpleasant taste.

In summary: Microwaving your coffee won't affect the caffeine content, but it can negatively impact its taste and aroma.