Green coffee beans have supplied a new player in the antioxidant arena. An extract of green coffee beans has been found to have a stronger antioxidant effect than established antioxidants like green tea and grape seed extract.
The active constituent in coffee that is responsible for its many health benefits is a compound called chlorogenic acid. It neutralizes free radicals, and addresses the problem of hydroxyl radicals, both of which can lead to cellular degeneration if left unchecked. Chlorogenic acid also helps regulate metabolism. Compared to green tea and grape seed extract, green coffee bean extract is twice as effective in absorbing oxygen free radicals.
One of the advantages of using the green coffee bean extract is that the negative effects of coffee are avoided. The chlorogenic acid is thought to boost metabolism by changing the way glucose is taken up by the body. And it does contain caffeic acids, which give a boost to energy levels like regular coffee does. But unlike boiled coffee, green coffee bean extract contains no cafestol, which is a diterpene. Along with its diterpene relative kahweol, cafestol increases concentrations of the 'bad' cholesterol, LDL, to levels that over a lifetime might increase the risk of coronary heart disease by as much as 20% These diterpenes also had an effect on the levels of liver enzymes measured. When these are elevated it is an indicator of stress on the liver. However the study that measured this found this was a transient effect, and also that the levels of liver enzymes were much lower than those with liver disease.
As a side note on the health effect of the diterpenes found in regular coffee, it was found that by simply drinking filter coffee, none of these effects on cholesterol levels or the liver took place. The coffee filter removed the offending diterpenes. And levels of these diterpenes in instant coffee are low.
Other benefits of green coffee bean extract include an increase in the effectiveness of pain killers, especially for migraine medications; a reduction in the risk of diabetes; and assisting the body burn a higher proportion of lipids (fats) compared to carbohydrates, which could help with muscle fatigue for athletes and bodybuilders.
Interestingly, on the subject of caffeine and liver disease, further studies have indicated it may in fact support liver health for some people. Those who were at high risk of developing liver disease due to drinking too much alcohol were found less likely to suffer liver damage if they drank more than two cups of coffee or tea a day. This was a population based study, not a clinical trial, and so is not conclusive on the subject. But it does offer some promising information. Those drinking in excess of two cups or more a day were half as likely to develop liver disease compared to those drinking less than one cup a day. Researchers do not know what caused this protective effect.
One of the criticisms of coffee in regards to health is that it leaches calcium from the bones. But this effect has been found to be overemphasized, at least in children. And adults who consume a diet with sufficient levels of calcium will be protected from the small amount of calcium that is lost due to coffee consumption.
So the old axiom that caffeine can stunt a child's growth is a myth. It was based on the fact that in older studies, caffeine was associated with low bone mass because those studies were done on elderly people who both drank a lot of coffee and had diets that were low in calcium. Recent studies in the US followed 80 teenagers over 6 years, and found no difference in the bone density of those with a high level of caffeine in their diet, compared to those teenagers who had little caffeine. Other studies determined that the amount of calcium lost from bones is small and can be balanced by having sufficient calcium in your diet.
The island of Jamaican is known for many things, sandy beaches, reggae music, Bob Marley and coffee. The high regard for Jamaican Blue Mountain coffee among avid coffee drinkers has driven its price up to between $26 and $40 a pound. What is it about this particular brew that warrants such a high price tag?
True to its name, Jamaican Blue Mountain coffee is grown in the Blue Mountain region of Jamaica, generally located between Kingston to the south and Port Maria to the north. Rising to 7,500 feet, the Blue Mountains are the highest point in the Caribbean. The area is characterized by cool, wet weather and dark, rich soil with good drainage, ideal conditions for cultivating coffee. Though coffee is not native to Jamaica, it is the chief export of the island.
Not just any old cup of Joe can call itself Jamaican Blue Mountain. The Coffee Industry Board of Jamaica must certify every bag of coffee to ensure only the highest quality beans bear the prestigious trademark. The Board only recognizes beans grown in specific parishes of Jamaica: St. Andrew, St. Thomas, Portland and St. Mary.
The Coffee Industry Regulation Act established a system of three grades of Jamaican Blue Mountain based on the screen or size of the bean. The term screen refers to the literal screens of various dimensions used to sort the beans according to their size. The theory behind this practice is that beans grown in higher altitudes are larger and make better-tasting coffee than those grown in lower altitudes.
The rigorous quality standard for Jamaican Blue Mountain excludes beans that would probably be considered fine for other coffees. The screening process also helps to eliminate maragogipe (elephant beans). A mutant strain believed to have originated on Brazil, elephant beans are large, green, porous beans that seem to absorb the flavor of the soil they grown in. The jury is still out on their worth, but they are considered an insufferable defect for Jamaican Blue Mountain production.
At least 96 percent of the beans used must be of the same size and bluish-green tint. No more than two percent can stray from that standard in any way. Sour or black beans, or foreign matter of any kind, are considered unforgivable defects and do not fall under the two-percent rule. The most unbending benchmark is needed to maintain the traits that coffee drinkers have come to expect.
The geographical area that grows Jamaican Blue Mountain beans is relatively small and can only produce so much coffee. The limited quantity, the matchless quality resulting from painstaking cultivation, the alluring aroma and the renowned name of Jamaican Blue Mountain have undoubtedly contributed to its reputation as one of the most sought-after coffees in the world. As long as hard-core coffee drinkers continue to demand it, it will also be one of the most expensive.
