What determines the caffeine in coffee beans? is caffeine good for the human body?

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When it comes to caffeine, the first thing that comes to mind is to be excited and refreshed. It is amazing how legendary animals and sheep once danced at night after eating coffee fruit.

For many people, coffee is used as a refreshing way to start their work every morning. In the past, people have been refreshing and excited by eating coffee fruits and beans to get caffeine. For people who love coffee and care about their health at the same time, discussing which coffee is less caffeinated has always been a hot topic.

So who determines the caffeine content in coffee beans? The first thing that affects the caffeine of coffee beans is determined by the type of coffee:

For example, the caffeine content of each Robusta coffee bean is about 3.2%, which is much higher than 1.5% of Arabica. For other types of coffee derived from Arabica, the caffeine content of each coffee bean is also about 1.2% Mel 1.7%. Among them, the caffeine of the bourbon variety of low-caffeine beans has been halved, which has become a delicious coffee (drink more and sleep well), and is also a favorite of scholars such as the French writer Balzac.

The caffeine of coffee beans is also related to the baking degree of coffee beans.

According to a report by the Association for Coffee Science and Information (Association for Science and Information on Coffee), the caffeine-to-weight ratio of an Arabica light-roasted, moderately roasted and deep-roasted coffee bean is 1.37%, 1.31% and 1.31%, respectively. That is, shallow baking is only 0.06% higher. The weight loss rate of light roasted coffee is 11-13%, and that of deep-roasted coffee is 15-17%. Therefore, there is a slight loss of caffeine due to sublimation in the process of roasting, but these losses are negligible. For the same intake of coffee grams, the caffeine content of deep-roasted coffee is higher than that of light-roasted coffee beans because of the weight loss rate and extraction efficiency. The degree of baking is not a key factor affecting caffeine content.

The caffeine content of the coffee liquid in a cup of coffee is closely related to the extraction. People will pay more attention to the amount of caffeine in the coffee liquor. after all, not all the caffeine contained in coffee beans is extracted into the coffee liquid, and the caffeine intake we focus on is the amount of caffeine mixed into the water.

The same kind of coffee beans with different extraction methods, the content of caffeine is also different. If 15g Arabica beans are brewed by hand, the caffeine content of a serving of hand-brewed coffee is about 100-150mg (200ml coffee liquid). 1shot Arabica beans contain about 50-100mg of espresso (30ml espresso liquid).

In general, there is a key relationship between the release of caffeine and the length of extraction time. The longer the water and coffee powder, the more caffeine will be released, so the same coffee bean weighs the same weight: cold extract coffee > French presser > hand coffee > espresso.

Caffeine has many pharmacological effects, and for people who are pregnant or have a bad stomach, it is best to control their coffee intake. But as long as a moderate intake of coffee, can be a good way to relieve fatigue and restore energy.

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