Cacao Bean Constituents

Cacao beans contain 18% protein, 565 lipids (fat), 13.5% carbohydrates, 1.45% theobrommine, 0.05% caffeine and 5% tannin (Montignac 1996, 203). Theobromine is also found inIlex cassine and IIex guaysua. Also present is theophylline, a compound with a similar structure and B-phenethylamine, tyramine, tryptamine, serotonin and catechin tanning agents (especially in the shell). Dried and roasted cocoa shells can contain up to 0.02% caffeine and 0.4 to 1.3% theobromine (Baumann and Seitz 1994, 946).
The leaves also contain the methylxanthines theobromine and caffeine. The concentrations vary depending upon the source but typically comprise less than 1% of the dry weight. They also contain chlorogenic acid and rutoside (Baumann and Seitz 1994, 944).
It has recently been discovered that cacao also contains anandamides.

- p. 502, The Encyclopedia of Psychoactive Plants: Enthnopharmacology and Its Applications by Christian Ratsch (1998)

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