mcb 62 coffee and cacao 11/4

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Author:
elainewest
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52839
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mcb 62 coffee and cacao 11/4
Updated:
2010-12-02 04:32:25
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mcb
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your mom
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  1. Effects of caffeine and other xanthines (Dosage)
    • <500 mg =increased arousal
    • >500 mg =anxiety, irratability, insomnia, psychosis, seizure, tachycardia, arrythmia
    • 10g =LD 50, heart attack, stroke
  2. Caffeine in Common Items
    • Coffee...100mg
    • tea....100 mg
    • coke, soda....40-50
    • Redbull...80 mg
    • Vivarin....200 mg
    • NO DOZ....100 and 200 mg
  3. Coffea arabica
    • bush/shrubby tree
    • native to N.E. Africa
    • Rubiacea family
    • cultivated in most tropical regions now
    • >10 billion pounds produced annually in 50 countries
  4. Coffe Beans
    • Starts out as berry that contains two beans
    • Beans are separated from berry pulp and dried
    • some fermentation may occur during the drying process
    • beans may be intentionally wetted to encourage fermentation before drying
  5. Preparation of Beans
    • Roasting of beans releases volatile essential oil which enhances flavor
    • essential oil is only a trace of the bean weight
    • 1lb of beans produces less than 100 mg of essential oil ~.02%
    • grind and extract with hot water
  6. Characteristics of Coffee
    • taste
    • smell/aroma/fragrance
    • taste+smell=flavor
    • mouth feel/ texture
  7. Chemistry of Coffee
    • rapid deterioration after roasting and grinding
    • loss of volatile aromatic molecules
    • oxidation
    • light-catalyzed destructive chemistry
    • absorption of other flavors
  8. Alfred Peet
    Founded Peet's coffee in Berkeley in 1966
  9. Coffe History
    • 900 AD Arab writings
    • 1400s first coffee houses in Iran, Egypt, Constantinople
    • Islamic religious acceptance controversy
    • used in all night prayer rituals and to interpret the Koran
    • eventually gained acceptance
  10. Coffee Houses in Europe (1600s)
    • coffee spread throughout Europe
    • coffee houses : relax, talk news and politics
    • heated beverages were new to Europe
    • 1st coffee house in England probs Oxford 1650s
    • first cafe in London 1652
    • 1662 ~300 cafes in london
    • Lloyds Coffe house became insurance, another became a stock exchange, banks
  11. Espresso
    • the alchemical essence of coffee
    • grind
    • quantity
    • pressing/tamping
    • water temp
    • time
    • polyphasic nature of espresso (different from viewed coffee)
    • liquid solution
    • emulsion of oil droplets
    • foam/crema of gas bubbles
  12. Cacao
    • theobroma cacao ( from greek theos=god broma=food)
    • native to mexico, centeral, and s. america
    • caffeine, theobromine, theophyline are the active molecules
    • historically drunk cold with water or with chilli or vanilla
  13. Xanthine Content
    • .5% caffeine
    • 1-3% theobromine
    • can vary over a broad range
  14. Cacao pod
    • 8 inches long
    • 30-50 seeds
    • Olmec, Toltec, and Maya used as currency

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