yes
Caffeine
Arabica
arabica
By weight, yes. As brewed, no. An average tea bag is around 2g of tea, when brewed will usually contain around 50-60mg of caffeine. An average serving of ground coffee is about 15g, and brewed usually contains 80-100mg of caffeine.
Arabica coffee beans http://en.wikipedia.org/wiki/Coffea_arabica Darker roasted coffees also tend to be lower in caffeine
It contains caffeine which is a stimulant, and it is most widely available and abused drug.
Caffeine from any source, be it tea leaves, guarana seeds, coffee beans or from a synthetic manufacturer, will always be the same chemical, otherwise it could not be called caffeine. From any source, caffeine will be C8H4N10O2, and will have the same properties.
No, you can get your coffee with plenty of caffeine in it. Caffeine occurs naturally in coffee and it is only through processing the caffeine out of the beans do you get decaf coffee.
Caffeine has only one formula: C₈H₁₀N₄O₂ There are, however many, many, many different sources of caffeine; more than 60 plants are known to contain caffeine naturally including coffee beans, tea leaves, and kola nuts.
On average coffee, but that is not to say that tea does not have caffeine. Tea USA brands per 8 oz has about 40 mg Drip coffee has about 115-175 mg Just to add a little more to this answer: If you were to measure the amount of caffiene in tea leaves and coffee beans you would find more caffeine in tea but the way coffee beans are processed and ground means that more of the caffeine from coffee gets into the drink. To summarise: If you are talking about the drink: Coffee generally has more caffeine If you are talking about the plants: Tea generally has more caffeine.
There are a few differences of the processing of coffee beans to tea leaves. They would include the coffee beans are roasted and tea leaves are withered and rolled.
Some companies may add caffeine, but on average it is only a flavoring, not actual cappuccino. These do not contain caffeine. However, Jelly Belly Candy Company is in fact made with real coffee, not the flavoring. How do I know? I had a three-pound container of Jelly Belly beans, and one of the ingredients was COFFEE. I am not quite sure what the caffeine content is, but I know the number of calories (4 calories per bean).