Docstoc

Caffeine - Download as PowerPoint

Document Sample
Caffeine - Download as PowerPoint Powered By Docstoc
					Caffeine

   Ariel Chang
   Emily Schultz
   Peter Banks
Understanding caffeine levels in
foods and beverages

   a 5-ounce cup of drip-brewed coffee
   a 5-ounce cup of tea
   a 5- ounce cup of instant coffee
   a 12-ounce can of Coca-Cola
   a 1-ounce bar of milk chocolate
   a 5-ounce cup of decaffeinated coffee
     Coffee-the wine of Islam


   11th century~ 15th century   • Khaldi’s goat
Coffee in Britain and North America
 17th century- British coffee house
               penny university


    After Revolutionary War (1783)- the
     American national drink
    After 1830- alcohol consumption
    By 1860- 3/ 4 of the world’s entire
     production of coffee
    Today 2/ 3 of the total U.S. coffee bean
     imports comes from: Brazil, Colombia,
     Mexico, Guatemala, and El Salvador
Two species of coffee beans
dominate the world market

   Coffea arabica            Coffea robusta
   Brazil and Colombia       Indonesian island of
   South America by           Java; brazil and Ivory
    French in 1700s            Coast; some countries in
   Too expensive to be        Africa
    used exclusively for      Harsher taste
    commercial brands of      Twice caffeine content
    coffee                    cheaper
How coffee is made: two basic ways


    The dry method                The wet method

    -under the sun                - in the water

    -Brazilian arabica beans      - all arabica beans

    - all robusta beans
Tea
2737 B.C.- Shen Nung


In early 1600 A.D.
Tea and Culture




           The end of 19th century



                                     80% in the U.S.
            1773- Boston Tea Party   St. Louis 1904
How tea is made
     Different process for different tea
      Green tea-3 steps; black tea- 4 steps;
      Oolong tea- 9 steps; and many others



Chocolate- cocoa bean pods
 Aztec god Quetzalcoatl to give humans a
 taste of paradise.



         1519-
                                           1615-
         Hernando
         Cortés                            marriage




         1528-                              1700-
         Spain                              England
How Chocolate is made
      Original chocolate- cold, thick, frothy, souplike
      concoction.

   1828-cocoa butter-white
   Chocolate liquor-powder-cocoa

Industry in the United State
   Hershey Chocolate USA and M&M/Mars-80% of market
   10.6 pounds person/year-10th
1. Switzerland-22 pounds person/year
2. Norway- 17 pounds person/year
   Italy, Japan, Spain
Xanthines: a family of CNS stimulate drugs that includes
      caffeine, theophylline, and theobromine.
Theophylline: a xanthine stimulant found in small
amounts       in tea.
Theobromine: a xanthine stimulant found in chocolate.



100

 80

 60                                            xanthines
      l                            e           theop
 40
                                               theobromin
 20

 0
mg        coffee     tea        chocolate

          5-ounce
Good Effects

   Increases mental alertness & stamina

   Metabolism

   Caffeine & exercise
Caffeine Overdose Symptoms

   In Adults:
-   Body as a whole:
-   difficulty sleeping
-   muscle twitching
-   Confusion increased
-   Urination increased thirst
-   fever
•Respiratory:         •Heart and Blood Vessels:
- difficulty in       - irregular heart beat
                      - rapid heart beat
       breathing
                      •Nervous System:
- Gastrointestinal:
                      - Hallucinations
- Vomiting
                      - Dizziness
- Diarrhea
                      - Convulsions
Caffeine overdose in infants

   Body as a whole:       •Gastrointestinal:
-   very tense muscles      - Nausea and vomiting
    alternating with       •Heart and Blood vessels:
    overly relaxed          - rapid heart beat
    muscles                 - low blood pressure
-   Respiratory:            - Shock
    rapid, deep, breathing •Nervous System:
                            - tremors
Bad Effects

Orally
 Absorption is with in 30 – 60 minutes
 Level peak in bloodstream in 1 hour
 Central nervous system peak
  approximately 2 hours.
Biodegradation

   Varies in genders because of differences
   Women in late stage of pregnancy using oral
    contraceptives eliminate caffeine more slower
    then male or female in general
   Infants and elderly have slow elimination
   Smokers eliminate 100% quicker then non
Effects on the Body

   Blocks adenosine---an inhibitory
    neurotransmitter
        Binds to receptors on the surface of cells that
         produces sleepiness, dilation of blood vessels,
         and constriction of bronchial passageways
Continue:

   By inhibiting the effects of adenosine
         Peripheral blood vessels are dilated
         Cerebral blood vessels in the head are
          constricted
         Dilated blood vessels in the head can cause
          headache pain
Effects cont.

   Case study
        Women    who consumes 3 cups of coffee a day
         reduced their chance of conceiving by 25%
        During the first three months of pregnancy is
         related to a greater incidence of low birth weight
         in the newborn.
        Any consumption during pregnancy will increase
         miscarriage
Effects cont.

   4-5 cups of coffee a day will increase the
    chance of having a panic attacks
Health Risks

   Increase the risks of heart attack
        1973  research called the Boston Collaborative
         Drug Surveillance Program reported that a
         consumption of more than 6 cups of coffee a day
         can double the risk of a heart attack.
        However, further studies refute that findings and
         said there was no connection
Osteoporosis and Bone Fractures

   1990 case study
        over  3,000 elderly men and women who drank
         2.5 – 3 cups of coffee or tea had a 69% greater
         risk of osteoporosis
        Those who drank 3.5 or more increase the risk to
         82 %
Osteoporosis cont.

   Reason
       Increase  the urinary excretion of calcium and
       inhibit the absorption of calcium from the diet.
Withdrawal

   Physical dependence---symptoms
        Headache
        Impaired     concentration,
        Drowsiness
        Irritability
        Muscle aches
        Flu-like symptoms
Caffeinism

   Acute Toxicity---greater then 10 cups of coffee
    in a short time span
        Agitation
        Muscle hyperactivity and twitching
        Profound insomnia
        Heart palpitations and arrhythmias
        Gastronintestinal upset
        Nausea and diarrhea
Withdrawal cont.

   Duration of symptoms
        12– 18 hours after last dose
        Peaking over the next 2 days
        Some may take up to a week
Remedies

   More exercise
   Drink more water
   Healthy diet plan
   Frequency intake
   Moderation
   Look out…….
Websites

   www.health.allrefer.com
   www.thecaffeineaddict.com
   faculty.washington.edu/chudler/caff.html
   www.karachocolates.com/chochist.html
   www.stashtea.com/facts.htm

				
DOCUMENT INFO