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What is Coffee?  An In-Depth Study

Coffee is by far the most heavenly beverage ever drank by man. It also is a very complex drink filled with lots of different chemicals. However, it is important to remember that it is more than 98% water. The following is a list of the major substances found in roasted coffee. Keep in mind it is not definitive. This information is taken from Rinantonio Viani's "The Composition of Coffee", his chapter in Caffeine, Coffee, and Health, edited by S. Garattini.

Purine Alkaloids Minerals Bases Chlorogenic Acids

Caffeine Calcium Betaine (3-; 4-; 5-) Chlorogenic acid
Liverine Magnesium Choline (3,4-; 3,5-; 4,5-) Dicaffeoylquinic acid
Methylliberine Phosphate ; Niacin < Feruloylquinic 5-) 4-; (3-;>
Paraxanthine Potassium Trigonelline
Theacrine Sulphate

Lipids Aliphatic Acids Carbohydrates

Diterpene esters
(mainly cafestol and kahweol palmitate and linoleate) Acetic Arabinose
Free dietepenes
(mainly cafestol and kahweol) C3-C10 Fructose
Free fatty acids Citric Galactose
(mainly squalane and nonacosane) Formic Glucose
5-hydroxytryptamides Fumaric Inositol
Phospholipids Lactic Mannitol
Tocopherols (alpha, beta, gamma-isomers) Malic Mannose
Triglycerides (mainly esters of linoleic and palmitic acids) Oxalic ; <>
Triterpene, sterols and methylsterol esters Quinic and quinides Xylose
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