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Protein in Coffee Beans

by
author image Chance Woods
Chance Woods has been a personal trainer since 2002, specializing in fitness and nutrition. She holds a Bachelor of Science in dietetics.
Protein in Coffee Beans
Close-up of a pile of coffee beans. Photo Credit Design Pics/Design Pics/Getty Images

The most popular use for coffee beans is roasting them, grinding them and then filtering water through them to make coffee. Used this way, coffee beans yield little to no protein. The bean itself, however, does contain protein, whether you eat it “green” or after it is roasted.

Candy

Chocolate-covered coffee beans are probably the most common way to eat coffee beans whole. Covered in either milk chocolate or dark chocolate, each serving of about 28 beans contains 3 g of protein. In addition to protein, coffee also contain 3 g of fiber for each 28-bean serving.

Brewed Coffee

The roasting process makes a small percentage of the protein in coffee beans soluble in water. However, brewed coffee retains only 0.28 g of protein per cup. None of the fiber present in the original bean remains in the brewed coffee product.

Amino Acids

Amino acids are the building blocks of protein. The protein from coffee contains primarily three of the 22 amino acids: glutamic acid, glycine and aspartic acid. Additional trace amounts of threonine, isoleucine, leucine, lysine, cystine, phenylalanine, tyrosine, valine, arginine, histidine, alanine, proline and serine exist, which means that coffee beans contain at least a small amount of seven of the nine essential amino acids.

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Caffeine

Unlike the other bean and seed protein sources, coffee contains caffeine. Each 28-bean serving of chocolate-covered coffee beans contain 336 mg of caffeine – several times the 95 mg of caffeine in a cup of brewed coffee. The caffeine content of coffee beans makes them a less-than-ideal source of protein. Consider the protein to be an unexpected bonus with your sweet treat rather than a legitimate source of protein to fulfill your daily needs.

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References

Demand Media