Caffine, Caffiene, Caffeine in Coffee

by Dan Harrington on June 2, 2011

Everything You Want To Know About Caffeine in Coffee

Your average cup of coffee has about 112 milligrams of caffeine, and a typical shot of espresso has approximately 90 milligrams of coffee.

Arabica coffee beans, which are used at Starbucks, Peet’s and other fine coffee shops, have about half as much caffeine as Robusta coffee beans which are used primarily to make instant coffee but also used in some espresso blends.

Roasting coffee reduces the caffeine content so a Dark Roast will generally have less caffeine than a Light Roast.

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Does the way I brew my coffee have any effect on the caffeine content of the coffee?

Yes it most certainly does. For example, you will get about 105 milligrams of caffeine from 7 ounces of percolated coffee and 145 milligrams of caffeine from 7 ounces of drip brewed coffee.

In comparison, a 1.75 ounce shot of espresso will have approximately 100 milligrams of coffee. The longer you left coffee steep, for example in a French Press, the more caffeine content will be in the brewed coffee.

Decaffeinated Coffee has approximately ten milligrams of coffee in one seven ounce cup. In other words, if you consume approximately 6 cups of decaffeinated coffee then you will be getting about the same quantity of caffeine as if you consumed one cup of coffee that was not decaffeinated.

How do most people get their caffeine?

Most caffeine is ingested by humans comes either from tea leaves or coffee beans. However many people do get caffeine from other sources of food which contain caffeine including cocoa beans, the koloa nut, guarana berries, yerba mate and also Yaupon Holly.

Caffine, Caffiene, Caffeine in Coffee continued:

What does pure caffeine look like and what is its chemical name?

Pure caffeine is a white, crystalline powder and its chemical name is 1,3,7-trimethylxanthine with the chemical formula C8H10N402. Bunnu is the Arabic word for the coffee bean.

How many people in North America consume caffeine?

About 90% of all adults in North America have some form of caffeine every day. Caffeine is also very popular worldwide.

Nearly one half million cups of coffee are drank every single day in the United States, and approximately 90% of its is ingested during the breakfast time. For many people coffee is all they have for breakfast.

What is the main reason that caffeine is enjoyed by so many people?

It is likely that caffeine is so popular because it tends to improve a person’s mood by raising the dopamine levels in their brain. Unfortunately this is also likely the reason that it can be somewhat addicting.

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Are there many plants which have caffeine in them?

Yes there are at least 60 plants which contain caffeine.

What is considered the lethal dose of caffeine that could kill a person?

A lethal dose of caffeine for a human is considered to be 10 grams of caffeine.

Are there any other names for caffeine?

Yes, some other names for the chemical caffeine include mateine and guaranine. Both of these names come from the names of the plants from which it is derived.

Is the chemical caffeine the same no matter what source it is derived from?

Technically the caffeine itself is a very specific molecule that cannot vary from its exact structure. However the effect of caffeine on people may vary depending upon the particular source of the caffeine.

The reason for this is that other chemicals present along with the particular caffeine, for example xanthine alkaloids, may create varied experiences in humans than other sources of caffeine.

All About Caffeine in Coffee continued:

Who was the first person to discover caffeine’s chemical structure?

The chemical structure of caffeine was first discovered by Hermann Fischer. This occurred toward the end of the 19th century. Fischer was also able to complete the first total synthesis of caffeine and the work was in part what earned him the Nobel Prize in 1902.

Today it is relatively uncommon to synthesize caffeine since it is so readily available from numerous sources. Caffeine is acquired as a byproduct when decaffeinating these natural sources that contain caffeine. If one was want to synthesize caffeine then it can be done using dimethylurea and malonic acid.

Is it Caffine? Caffiene? or Caffeine in Coffee?

Why do people take caffeine tablets?

Some people wish to improve their overall energy and mental alertness by taking caffeine tablets. People may do this to stay up studying for an important exam or to stay awake while driving.

How long does it take caffeine to take effect in the body?

The effect of caffeine varies in different people for various reasons including the weight of the person. Generally caffeine begins having an effect on a person within about fifteen minutes of what it is consumed, and surely within one hour.

Typically the caffeine, whether from coffee or espresso or any other source, will be almost fully dissipated from the body after about four hours.

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What is the most common type of coffee plant grown?

Arabica coffee is the most commonly grown coffee plant varietal. Also widely grown is the Robusta coffee plant varietal. Robusta coffee beans have about twice as much caffeine as Arabica coffee beans. Arabica coffee comprises about 70% of all coffee grown. Typically a coffee plant will take about five years to reach maturity and at that point will produce about two pounds of coffee each year. The gardenia flower is a relative of the coffee plant.

Who was the first person to make Instant Coffee?

Instant coffee was first developed by George C. Washington, an English chemist who came up with the process in 1906. By 1909 he was selling his invention. See World’s Best History of Coffee.

What is involved in the process of decaffeinating coffee?

The process of decaffeinating coffee beans involves first steaming the coffee beans in order to force the caffeine in the beans to rise up to the surface of the beans. When that occurs the caffeine is washed away from the bean using methyl chloride or some other organic solvent.

Fun Fact: Did You Know…A single shot of espresso requires approximately forty-five coffee beans!

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