Why do some coffee cause insomnia and some don't? What is the difference between Arabica and Robsta? How much caffeine is Robusta's? What is decaf coffee?

Yesterday, Qianjie chatted with a regular visitor and asked why he always came all the way to Qianjie to drink coffee. After all, the Qianjie store is relatively remote, and online Taobao also sells hanging ear coffee that you can brew at home. You don't have to go to so much trouble every day. Just as Qianjie was mentally constructed and prepared to accept a series of praises such as "people have a sweet voice" and "coffee is particularly delicious", he said: "Because drinking your coffee will not sleep, it will not palpitate... "Then he began to ask: " Why can I easily lose sleep and palpitations when I drink coffee in other homes, but not when I drink coffee in your house? Then it seems that drinking American will make it easier to lose sleep than washing it with your hands? Why is this? "The answer is simple: it is caused by different caffeine levels! Friends like this type are typical people who are sensitive to caffeine, so when you consume more caffeine, insomnia and palpitations will occur.

The reason why coffee drunk in different coffee shops has different effects is because the caffeine content of these coffees is different! Some are lower, while some are higher, which leads to the situation that some people will lose sleep after drinking it, and some will not. So why is this difference? Affected by many factors, such as flour amount, extraction method, bean seeds, etc. As we all know, caffeine comes from coffee fruits (beans). Generally speaking, the more coffee beans are used, the higher the caffeine content of the extracted coffee will be. Take American as an example, some cafes use 18 g of powder for extraction and concentration, while others use 20 g. Then the difference in the amount of powder may make a difference in the caffeine content.

In addition, the extraction method will also affect the caffeine content. For example, they are all 20 grams of powder, but when we use different extraction methods, the caffeine content will be different. For example, if Qianjie uses a hand-flushing method for extraction, its extraction rate may be 20%, while if it is extracted in a formal manner, its extraction rate may be 22%. In contrast, hand-brewed caffeine concentration is lower than that of Italian style, so when we drink hand-brewed, we are not as prone to insomnia as American style (this is just an analogy, there are actually many other influencing factors). Or they are both used for making espresso, but the first cup used a water temperature of 92 ° C, while the second cup used a water temperature of 94 ° C, so the second cup of coffee has a higher probability of having a higher caffeine content than the first cup. Higher. Because its extraction efficiency is higher, more caffeine will be dissolved from the coffee beans.

Of course, it may also be the coffee beans themselves. Just like various fruits, there are different varieties of coffee, and the caffeine content of these different varieties is also different. Currently, commercial coffee on the market is divided into two main categories: Arabica and Robusta. Arabica is the most used variety in coffee shops. It contains less caffeine, accounting for about 0.9% to 1.2% of the bean weight. Then it is also rich in sugar and rich in oil, which makes the coffee it makes has a very rich aroma. Because of this, Arabica is widely favored by major coffee shops. (Arabica on the left, Robsta on the right)

Compared with Arabica, Robusta has twice as much caffeine, generally about twice as much as Arabica. Not only that, its amino acid and chlorogenic acid content will be higher than Arabica. This gives the coffee it makes has a very thick taste and taste, so it is very suitable for being used as an instant raw material or added to a blend to improve the quality and flavor of the coffee. The "commercial blending" in Qianjie Bean List is to add 10% beans to give the coffee a stronger flavor and richer fat.

If the coffee beans used by the store contain Robusta, the caffeine content will be higher than that of pure Arabica. But it should be noted that Robsta is not a representative of inferior quality. It has many advantages, but because this is not Robsta's introduction article, Qianjie will not go into it too much. To sum up, we can know that the extraction method, the amount of powder, and the bean seeds used are all the main factors affecting the high and low caffeine content. For people with high caffeine sensitivity, it is best to pay attention to the most appropriate amount of coffee they drink every day. Alternatively, change your coffee intake to decaf coffee. Because the caffeine content of decaf coffee is extremely low, insomnia and palpitations will not easily occur even if you don't need much control.

There are different types of decaf coffee, and the current mainstream is artificial decaf. Among the Front Street bean lists is a Front Street decaf coffee from Colombia, which uses Swiss water treatment. The caffeine in coffee beans is not only well eliminated (reduced to 3% of the original bean caffeine), but also retains a certain flavor. If you are a friend who is sensitive to caffeine, decaf coffee is worth trying~

- END -