The chemical composition of coffee

Sorted by content, the typical values of water-soluble factors are: phenolic polymer (pulp) 8%, polysaccharides 6%, chlorogenic acid 4%, minerals 3%, water 2%, caffeine 1%, organic acids 0.5%, sugar 0.3%, grease 0.2%, and fragrance (substances) 0.1%.

The effects of caffeine on the mind have been well documented, and most "folk knowledge" equate the effects of coffee with caffeine. however, other richer ingredients in coffee have not been widely studied.

Raw coffee beans contain up to 10% chlorogenic acid, that is, different hydroxyl ester isomers of quinic acid (a common plant ingredient). Common in most plants and fruits, raw coffee beans can contain up to 10% chlorogenic acid by dry weight. These are mixtures of monoesters, diesters, third-generation, tetrahydroxyphenylethenoic acid and quinic acid, a sugar-like molecule. This is a serious period of dizziness. I hope it will be corrected by friends majoring in chemistry.)

In the baking process, about half of the chlorogenic acid loses a water molecule and combines with lactone to form a mixture of quinine lactone.

The brewing process of roasted coffee leads to the isomerization of quinine. This will form thousands of different compounds, each with its own unique pharmacological effects. Although these chemicals rarely account for more than 0.3% of the weight of dried coffee, they may have a significant effect on the role of coffee because of their ability to enter the brain (break through the brain barrier?). In addition, the interaction of different kinds of quinine, acting on the same biological object, will bring healthy coffee effect. The pharmacological effects of chlorogenic acid or quinine are largely unknown. Interestingly, a previous Australian report found that 240 mg of ground coffee (about 1 pound 5 of a cup of 160 ml coffee) replaced 50% of the sleeping system receptor allylmorphine (morphine antagonist). This suggests that this element of coffee may be combined with the brain's sleeping system, which is associated with mood regulation, alcoholism and drug addiction.