What's the difference between a machine-brewed Americano and a hand-drip Americano? When comparing the oil content of the two coffees, it was found that the machine-brewed Americano contained much more oil. This is the result of placing oil paper on top of the two coffees.
The true identity of this coffee oil is 'cafestol*'. Coffee contains more than 500 chemicals, including the oil that floats in espresso and the coffee foam crema that is called cafestol.
Benefits of cafestol
Cafe stol has several actions in the body. This is also thanks to the anti-inflammatory and anti-cancer effects of coffee. In fact, a 2013 study by Dr. Jaeho Park's team at the Korea Food Research Institute found that cafestol inhibits the formation of abnormal new blood vessels caused by diabetic retinopathy, cancer, rheumatoid arthritis, and endometriosis.
Cons of cafestol 1: Elevated cholesterol and liver enzyme levels
But there's more to cafestol than all its benefits. It also has the downside of increasing cholesterol and liver enzyme levels. In 2007, a team of researchers from Baylor College of Medicine in the United States found that cafestol in coffee increased the concentration of low-density lipoprotein (LDL). In a study conducted by the Netherlands Institute of Health Sciences in which adult men and women were given five cups of coffee a day for four weeks, cholesterol levels increased by 8% in men and 10% in women.
Cafe stol is extracted by pouring hot water into ground coffee beans. The same goes for Turkish coffee, which is made by boiling water several times with finely ground coffee, French pressed coffee, which uses a metal filter to extract espresso, and espresso machine coffee, which is used in coffee shops. According to a study by the Wageningen University of Agriculture in the Netherlands, a cup of coffee contains 4 mg of cafestol, which can raise cholesterol levels by about 1%.
Even a zero-calorie Americano is not filtered through a paper filter, and cholesterol cannot be guaranteed.
Disadvantages of cafestol 2: Causes glaucoma
Hand-drip coffee is filtered through a paper filter, and cold coffee is filtered through a ceramic filter. In particular, the paper filter used for hand drips is known to filter out about 95% of coffee fat components such as cafestol.
If you have cardiovascular disease or are on a diet, you may want to drink hand-drip coffee. In addition, the egg coffee that we like to eat at home is also removed from the cafestol during the freeze-drying process.
If you can't afford to enjoy drip coffee, you can strain it through a paper filter.
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