Are you wondering exactly much caffeine is in your cup of coffee. Trying to cut down a bit, or at least know how much caffeine you are ingesting each day with your morning cup of java or afternoon pick-me-up triple espresso Latte?
A typical cup of coffee contains approximately one hundred and twelve milligrams of caffeine. There is a bit less caffeine in a shot of espresso – a typical espresso shot includes about ninety milligrams of caffeine.
- Caffeine Content Varies
- How Does Roasting Affect Coffee Caffeine Content?
- How Caffeine Metabolizes in the Human Body
- Caffeine’s Classification by the Food and Drug Administration (FDA)
- How does caffeine affect the human body?
- Can Caffeine Increase the Effectiveness of Drugs?
- Does Caffeine Have Any Hepatoprotective Properties?
- What Products Contain Caffeine, and How Much?
- Does Caffeine Have Any Topical Uses?
- What are the natural sources of caffeine?
- Withdrawal from Caffeine and Human Tolerance To Caffeine
- Debate Over Adenosine Receptors, Tolerance and Caffeine Withdrawal Symptoms
- The Discoverer of Caffeine
- Who First Isolated Caffeine from Coffee?
- Who Opened the First Coffee House?
- What began the spread of coffee all around the world?
Caffeine Content Varies
While these numbers are typical, the amount of caffeine in coffee can vary considerably based upon multiple factors. The primary factors affecting caffeine content of coffee and espresso include the genetics of the coffee bean varietal, the particular roasting given to the coffee beans and how the coffee is brewed.
If the coffee beans being used are Arabica coffee beans then one cup of coffee that is approximately one hundred and twenty milliliters of coffee, if it is drip-brewed, will have about 112 milligrams of caffeine. A 30 milliliter Espresso shot using Arabica coffee will have an estimated ninety milligrams of caffeine.
How Does Roasting Affect Coffee Caffeine Content?
When coffee is roasted it decreases the overall amount of caffeine in the coffee, but not significantly enough for it to be a serious way to reduce your caffeine intake.
Caffeine did not undergo significant degradation with only 5.4% being lost under severe roasting.
Choose your roast based on your personal preferences, not based on caffeine content.
Roasting does have an effect on chlorogenic acid content – possibly what contributes to many of coffee’s purported health effects, but another study also shows that caffeine is relatively unaffected by roast level.
How Caffeine Metabolizes in the Human Body
Once a person consumes caffeine the body starts to metabolize it and this takes place in the person’s liver. The result is three different metabolites. These three metabolites include paraxanthine (84%), theobromine (12%) and theophylline (4%).
In the first 45 minutes after consumption of the caffeine it is likely absorbed by the stomach and small intestine and begins to spread throughout the tissues of the human body.
Caffeine’s Classification by the Food and Drug Administration (FDA)
Considered safe for human consumption by the FDA, caffeine is classified as a food substance with multiple uses.
All About Caffeine in Coffee – Investigating the Side Effects of Caffeine and the Symptoms of Withdrawal from Caffeine continued:
Caffeine is a stimulant and is known scientifically as a xanthine alkaloid. When it is isolated from its source it is a crystalline white substance and is very bitter.
How does caffeine affect the human body?
Caffeine affects the human body by creating chemical changes in the human brain with a whole variety of effects including an enhanced alertness and energy level.
The way this is enhanced energy and alertness is achieved by the chemical caffeine is that the caffeine pretends, or mimics, another compound which is called adenosine.
The caffeine then binds on to the adenosine receptors in the brain with the effect of halting the true adenosine from doing its job which normally would be to slow down the body’s nerve impulses and bring a very sleepy feeling to the person, a natural drowsiness that is warded off by the effects of caffeine.
Caffeine Side Effects Explained and Caffeine Withdrawal Symptoms
Can Caffeine Increase the Effectiveness of Drugs?
Yes, some drugs may have an enhanced effectiveness when affected by caffeine. For example, some headache drugs include caffeine in their contents in order to help the effectiveness. This may be related to the vasodilating effects of caffeine.
Caffeine may be used in combination with ergotamine to treat cluster headaches and migraines. Some people prefer to use caffeine to overcome the sleepy qualities they feel when taking antihistamines.
Does Caffeine Have Any Hepatoprotective Properties?
Yes, in fact some people who have shown to be at high risk for liver disease have been shown to have less severe liver injury associated with increasing caffeine consumption. This may include people with obesity, hemochromatosis and alcoholisms. [source]
Because of this, people who drink coffee but want to quit caffeine may want to look into decaf coffee instead of cutting out coffee entirely, so that they can continue to benefit from its health protecting properties.
What Products Contain Caffeine, and How Much?
A tablet of Excedrin contains about sixty-five milligrams of caffeine while a regular strength caffeine tablet has about one hundred milligrams of caffeine. There are two hundred milligrams of caffeine in an extra-strength caffeine tablet.
Another example of a common product with plenty of caffeine in it is chocolate. There are about ten milligrams of caffeine in an average milk chocolate bar. Dark chocolate, by comparison, may have about 30 milligrams of caffeine. There are some dark chocolate bars that have as much as 160 milligrams of caffeine so it can vary considerably by the type and the quality of the chocolate.
Six ounces of a typical green tea will contain about thirty milligrams of caffeine while the very same amount of black tea will have about fifty milligrams of caffeine.
Amount of Caffeine in Coffee continued: You will get about thirty-four milligrams of caffeine from 12 ounces of Coke while a Mountain Dew will give you a whopping 54 milligrams of caffeine. A Red Bull energy drink has about eighty milligrams of caffeine while a Monster energy drink has about 160 milligrams of caffeine.
Does Caffeine Have Any Topical Uses?
Yes, some studies completed on ex vivo hair follicles have shown that caffeine may decrease hair growth suppression in vitro due to testosterone. In this regard caffeine may be a potential therapeutic agent in Androgenic alopecia, and caffeine has been added by some companies to their soap and shampoos.
What are the natural sources of caffeine?
Caffeine is found in nature in a wide array of plants, and it is found in plant fruits as well as plant leaves. Caffeine often serves to help the plant by working as a natural pesticide against harmful predators on the plant such as insects.
Withdrawal from Caffeine and Human Tolerance To Caffeine
People who consistently consume caffeine will gradually adapt to the continuous presence of the chemical in their body by increasing their overall number of adenosine receptors in their central nervous system. This occurs since caffeine functions as an antagonist to the receptors in the central nervous system for the neurotransmitter adenosine.
Tolerance adaptation to caffeine has the effect over time of reducing the chemical’s stimulatory effects. These adaptive responses to caffeine also have the effect of making the person more sensitive to adenosine, and thus when the intake of caffeine is reduced then the adenosine’s natural physiological effects will create withdrawal symptoms.
Of 49 symptom categories identified, the following 10 fulfilled validity criteria: headache, fatigue, decreased energy/activeness, decreased alertness, drowsiness, decreased contentedness, depressed mood, difficulty concentrating, irritability, and foggy/not clearheaded. In addition, flu-like symptoms, nausea/vomiting, and muscle pain/stiffness were judged likely to represent valid symptom categories. In experimental studies, the incidence of headache was 50% and the incidence of clinically significant distress or functional impairment was 13%. Typically, onset of symptoms occurred 12-24 h after abstinence, with peak intensity at 20-51 h, and for a duration of 2-9 days. In general, the incidence or severity of symptoms increased with increases in daily dose; abstinence from doses as low as 100 mg/day produced symptoms. Research is reviewed indicating that expectancies are not a prime determinant of caffeine withdrawal and that avoidance of withdrawal symptoms plays a central role in habitual caffeine consumption.
Debate Over Adenosine Receptors, Tolerance and Caffeine Withdrawal Symptoms
There is some debate in scientific circles about the increase in adenosine receptors being the main cause of building up tolerance to caffeine’s stimulating effects, with some evidence pointing toward a conclusion that there are also other causes at work which help to explain people developing a tolerance to large doses of caffeine.
The Discoverer of Caffeine
The evidence is a bit fuzzy but some say that the stimulating effects of caffeine are mentioned in Chinese legends dating to about 3,000 years ago.
Firmer evidence comes from 600 BCE as a Mayan pot dating to this time contains the first clear evidence of a cocoa bean, so we know caffeine was around by this time for sure.
Who First Isolated Caffeine from Coffee?
In 1819 the German chemist Friedlieb Runge became the first scientist to successfully isolate the chemical caffeine from coffee beans. Less than one year later the French chemist Pelletier and another scientist named Caventou also isolated the chemical caffeine, and Pelletier was the one to coin the word “cafeine” which he derived from the word “cafe” meaning coffee.
Who Opened the First Coffee House?
As early as 1530 there were coffeehouses in Damascus, Syria and Istanbul.
What began the spread of coffee all around the world?
In the 1600s the Dutch became the first people to carry coffee from the ancient port of Mocha. This movement of coffee by the Dutch began the rapid spread of coffee beans around the globe and it is still spreading, most recently growing rapidly in consumption in China and other emerging markets. The Dutch were also industrious in cultivating coffee in other locations, first in Ceylon (now Sri Lanka) in 1658.
Thank You for Visiting Espresso Coffee Guide and Reading Caffeine in Coffee – Caffeine Withdrawal Symptoms – Caffeine Side Effects. Savor Your Fine Coffee and Espresso!