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Green Coffee For Protection Against Oxidative Stress |
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Green Coffee For Protection Against Oxidative Stress
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Darrell Miller | 11/17/07 |
Date:
November 17, 2007 11:46 AM
Author: Darrell Miller
(dm@vitanetonline.com)
Subject: Green Coffee For Protection Against Oxidative Stress
It is recorded that coffee drinking originated in Ethiopia in North East Africa, from where Arab traders introduced the plant to the Middle East. From there it moved to Turkey in the 15th century, where it was highly prized as a daily beverage due its invigorating properties. It is also believed that the infamous Captain John Smith introduced the plant to Virginia.
The Brazilian coffee trade was due largely to the introduction of the bean to that country by the French in 1727, and the Boston Tea Party of 1773 rendered it the only non-alcoholic drink worth consuming by the patriots of 18th century America. Now over 50% of Americans drink coffee daily, although this seems a somewhat conservative estimate, and the tea houses of England have largely been replaced by coffee shops and the ubiquitous Starbucks.
So much for the history of a beverage that has been prized for its stimulant properties, but recent research has established that not only is coffee a stimulating drink, but that it is a strong antioxidant due to its polyphenol content. However, not all forms of coffee have this property, only the green coffee bean before it has been roasted. Polyphenols are very powerful antioxidants that scavenge the free radicals that destroy body cells, and not only accelerate aging but also threaten the health of your cardiovascular system and the health of other major organs.
Free radicals are compounds with a spare electron. Normally the electrons in all stable molecules come in pairs, and any free electron without a partner is like a lovelorn bachelor. It will seek a mate, and take it from wherever it can find one. Usually it secures its partner by stealing an electron from one of our body cells. This can totally destroy the cell, as it might anybody who has its partner stolen, and cell destruction is not a good thing. It is the destruction of body cells that promotes the appearance that aging brings: the wrinkles and the loss of energy that is generated by healthy cellular activity.
Antioxidants destroy these free radicals, and come in a number of different guises. Vitamins A, C and E are all powerful antioxidants, as are many of the compounds that are essential to our biochemistry such as beta carotene and polyphenols. These polyphenols are found in practically all plants to a greater or lesser degree, and another rich source is grapes, and those found in green coffee beans are what are known as hydroxycinnamic acids the most abundant of which is caffeic acid. Another is chlorogenic acid, and together they form a very potent team in preventing the oxidation by free radicals of LDL (low density lipoprotein).
Low density lipoproteins are those that carry cholesterol from the liver to areas of the body that need first aid due to damage, such the arterial walls. However, this can be attacked by free radicals and oxidized which results in the deposition of excess cholesterol that can build up till it eventually constricts, and sometimes completely blocks, the major cardiac arteries. This is a serious condition known as atherosclerosis that can eventually lead to cardiac disease and arrest or to strokes if the artery is in the brain.
Not only do chlorogenic and caffeic acid help to prevent this from occurring, but they also help to prevent the cellular degeneration caused by the free radicals. They must be extracted from the green coffee bean because roasting or heating in any way, including brewing, destroys them. In fact, brewed coffee contains some potentially harmful substances called diterpenes that some believe can increase your chances of coronary disease by up to fifth if you drink coffee regularly over your lifetime.
It is also believed that green coffee extract can reduce the risk of diabetes due to its effect on your blood glucose levels. Evidence is coming to light that some polyphenols, including chlorogenic acid, might have inhibiting properties on the activity of glucose-6-phosphate, otherwise known as Robison Ester, which is involved in the metabolism of blood glucose and which is affected by diabetes which reduces its concentration. Chlorogenic acid is though to be able to redress this imbalance and not only reduce blood glucose levels, but increase the glycogen stored in the liver as an emergency energy source for the body.
Green coffee bean extract also possesses other beneficial properties, not the least of which is its effect in increasing the metabolism of fats in relation to carbohydrates. This assists in weight loss and also increases stamina. The decrease in the risk of diabetes of up to 50% in men, and slightly less in women, could be due to a combination of the regulation of glucose-6-phosphate and the regulation of blood glucose levels and glucose and weight management in general. The vast majority of diabetes patients are overweight.
In animal studies, the presence of chlorogenic acid appears to reduce the hyperglycemic peak that arises through the action of glucagon, a hormone used to counter hypoglycemia. The fact that chlorogenic acid reduced this sugar peak indicates its potential use in reducing abnormally high blood glucose levels. Another effect of this was an increase in the animal’s glycogen level and in the level of glucose-6-phosphate in the liver.
This indicates a reduction in glycogenolysis, by which glycogen is ultimately converted to glucose-6-phosphate and glucose, thus increasing the blood glucose levels and also of gluconeogenesis which is the production of glucose from carbohydrates and some glucogenic amino acids. In other words, green coffee bean extract can help to regulate blood glucose levels by preventing the liver from producing glucose from glycogen and carbohydrates.
However, the biochemistry apart, it must be stressed that these benefits are not obtained by drinking coffee, and it has to be repeated that the active agents in providing them are destroyed by the roasting and brewing processes. It is only the green coffee beans that can be used for protection of oxidative stress of human body cells and the gradual degradation into premature aging and many other related conditions.
