Assertion: cocoa's cocoa | /r/MadeOf | alkaloids theobromine
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text: Cocoa contains the amines and alkaloids theobromine (0.5% to 2.7%), caffeine (approximately 0.25% in cocoa), theophylline, tyramine, phenylethylamine, and trigonelline.10, 18 A standard chocolate bar (40 to 50 g) contains theobromine (86 to 240 mg) and caffeine (9 to 31 mg).19