What is green coffee bean extract and how it is made

Green coffee bean extract-From the tree to your medicine cabinet.

We love our coffee. It is one of the most popular beverages all over the world. According to the International Coffee Organization, an average American consumed in 2009 more than 9 lbs of coffee. Mostly, we love it for its flavor and for the energy buzz the caffeine in coffee gives us. But, caffeine is not the only active compound in coffee. Green coffee beans contain a number of active compounds, of which chlorogenic acid is most important. Green coffee beans extract, with a minimum of 45 percents of chlorogenic acid, is getting a lot of attention by the scientists as well as consumers as a powerful tool in weight loss efforts.

 The power of coffee

Coffee is one of the most biologically active plants we use in our nutrition. Coffee contains a number of important alkaloids such as theophylline, theobromine, and paraxanthine. It is rich in proteins, free amino acids and carbohydrates. One of the most interesting ingredients in coffee - chlorogenic acid - is attracting a lot of interest lately. Chlorogenic acid is a phenolic acid, and as such a more powerful antioxidant than vitamin C. Besides boosting our immune system, chlorogenic acid has been found to be a powerful tool in fighting obesity. A number of studies show that chlorogenic acid helps weight reduction by controlling fat metabolism, lowering triglycerides in plasma, heart and liver and lowering cholesterol concentrations in plasma, heart and adipose tissue.

Green coffee beans

Coffee beans grow on a fairly large tree, all over the world. About half of it grows in South America. Coffee beans are in facts seeds of small, red berries called cherries. Each cherry contains two seeds. They are harvested mostly by hand, so that only the ripest fruits are chosen. When the yield is very high, machines are used to strip trees of all beans, ripe and green.  What we know as ‘green coffee beans’ are beans which are not roasted after they have been cleaned. Some of them, if picked immature, are green in color. The mature beans are reddish-brown. Dark brown coffee we know becomes dark during roasting process. Roasting enhances flavor and smell of coffee. Green coffee beans make very bitter drink.

After being harvested, coffee berries are processed. "Wet processing" means removing pulp from fruits by hand and the rest is soaked in water for a few days. This causes fermentation which dissolves the rest of the pulp or any other residue. The seeds are then washed and dried, or in the sun, or in drying machines. In the "dry processing" method, coffee fruits are dried in the sun for several weeks and the dried pulp is removed after.

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Coffee seeds or beans are shipped green and to prevent spoilage, they have to be dried to about ten percents of moisture content.

Green vs. roasted coffee

If you like your coffee for its flavor, aroma and caffeine content, you should use it roasted. Roasting brings out the flavor and reduces bitterness of coffee. But, if you want coffee for the chlorogenic acid it contains, when trying to lose weight, you need green coffee beans. Roasting coffee destroys about 80 percents of its chlorogenic acid content. Green coffee has bitter flavor and cannot be used as a beverage. 

The best way to get most out of green coffee is by using its extract.

Manufacturers of green coffee bean extract use only the best quality dry green coffee beans from Coffea canephora robusta or Coffea arabica beans.

Most green coffee bean extracts contain very little caffeine and will not create jitters and other side effects caffeine can create. The best extract should not contain any filler or additive, just pure green coffee.   

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Green Coffee Is Getting Famous

Why all the buzz?

When you read about green coffee, it is green coffee bean extract that people are talking about. Your regular coffee machine processes ground, brown, roasted beans in order to produce your favorite coffee. Green coffee beans are the way coffee beans look when they are not roasted. When these beans are soaked in distilled water, the green coffee bean extract can be produced, that is rich in antioxidants and chlorogenic acid. Chlorogenic acid is a powerful weight loss aid, as it inhibits the absorption of glucose in the blood stream, preventing the body from turning excess sugar into fat. Additionally, it leads the body to use fat as an energy source, instead of carbohydrates, that is our body's default function. This way we burn more fat faster.

As green coffee bean extract is low on caffeine, it allows you to get many of coffee's antioxidants without the agitation, digestive issues, jitters and sleep issues that coffee consumption causes to many people. It has also been found in scientific studies to dilate the veins, lowering blood pressure. And since it does not allow for glucose to enter your blood stream that easily, it can also be used to help people with type 2 diabetes control their sugar spikes.

Featured on the media

The benefits of green coffee bean extracts have been featured many times on the Dr. Oz show, where studies about its benefits were also presented by different specialists. After Dr. Oz first called green coffee bean extract a miracle, the sales of green coffee supplements skyrocketed. Dr. Oz has been accused of being paid to talk about green coffee benefits and in order to prove that this was not true, he conducted his own research with the help of doctors and two control groups of women. His independent researched proved that green coffee bean extracts greatly help weight loss.

Many newspapers and their online versions have also published articles talking about the hope that green coffee beans bring for people who are overweight. The Los Angeles Times, Huffington Post and Daily Mail are just a small part of the press that felt green coffee beans were worth a mention.

Do famous people use green coffee bean extract?

As top class dieticians have to keep the confidentiality of their clients, it is quite hard to know for sure who has been using green coffee bean extracts. Having to lose weight in Hollywood is considered a major sin so not everyone is willing to talk openly about that. However, inside sources have repeatedly claimed that Demi Moore, Jenifer Lopez and Katy Perry are among some of the stars who trust the green bean for its magical powers. The Daily Mail has even published an article, according to which a very famous Hollywood nutritionist said that green coffee bean extract sales skyrocket around Oscar time, when all the stars have one goal: look better than the rest.

Are there any new studies on the green coffee benefits published?

There sure are. In April 2013 Joe Vinson presented his latest research concerning the potential of green coffee beans as a weapon against obesity and type 2 diabetes at a meeting of the American Chemical Society. And of course more research will take place the years to come, in order to discover the full potential of this great natural supplement.

Green coffee extract and scientific studies and tests

Obesity is considered one of the biggest health risks in the modern world. It doubled worldwide since 1980 and there are now more than 1.5 billion people on the planet who are obese or overweight. Extensive national campaigns promoting healthy diets rich in fruits and vegetables, combined with increased exercise are failing. Scientists are increasingly turning to effective and inexpensive solutions derived from plants. While almost daily we learn about just another ancient plant that is offering miraculous weight loss power, green coffee is more researched than most and shows greatest promise.

Claim to fame

Green coffee extract became all the rage as a weight loss ‘miracle pill’ after TV personality Dr. Oz promoted it on his program as the latest answer to the prayers of overweight people. Such popularity increased the sales, but its exaggerated claims made many people skeptical. After all, there is a new ‘miracle weight loss pill’ on the market almost daily. But, contrary to many other supplements, green coffee extract has been extensively researched and there is a range of reliable scientific studies which confirm the ability of the main active ingredient of green coffee extract –  chlorogenic acid - to promote weight loss and improve a range of other health issues.

How it works

In a study  published in 2003 in the American Society for Clinical Nutrition, a group of scientists from the Centre for Nutrition and Food Safety, School of Biomedical and Molecular Sciences, University of Surrey, Guildford, United Kingdom, explored the glycemic effects of two main active compounds of coffee: chlorogenic acid and caffeine. They found that coffee acutely affects the secretion of gastrointestinal hormones and glucose tolerance.  Their study confirmed their hypothesis that chlorogenic acid has an antagonistic effect on transport of glucose and that it might affect the rates of intestinal glucose absorption.

 Randomized, placebo-controlled, double-blind study was conducted  by Joe Vinson and colleagues from the Chemistry Department, University of Scranton, to evaluate the safety and efficiency of a green coffee bean extract in 16 adults who were overweight. The results were published in Diabetes, Metabolic Syndrome and Obesity in 2012 and show a significant weight reduction up to 8 kg, more than 10% of the body weight and body mass drop between −2.92 ± 0.85 kg/m². There was also notable change in body fat percentage of up to 2.00 percents.

Norwegian scientists Thom had similar results  in his randomized, double-blind, placebo-controlled study of 40 obese volunteers, confirming that that the pathway for weight loss is in the reduction of the absorption of sugar in the gastrointestinal tract.

 

Not only weight loss

In 2008,  American Society for Nutrition published results of the study  conducted by a group of Brazilian scientists found that Chlorogenic Acids in the extract of Green Coffee are extremely Bioavailable in Humans - easily absorbed and metabolized. This paper underlined a number of benefits of chlorogenic acid in green coffee, such as lowering the risk of cardiovascular disease, Alzheimer's disease and diabetes type 2. Chlorogenic acid was also found to have antibacterial and antiinflammatory properties.

Green coffee in the media

Media can kill or ignite the sale of a product, good or bad. Learning how to read the information in the papers and on the web requires a lot of critical reviewing and a dose of skepticism. Green coffee extract has attracted a lot of interest of scientists because of green coffee’s active ingredients, particularly chlorogenic acid. Chlorogenic acid acts as an antioxidant, and has been found to slow the conversion of glucose and its release into the blood. This activity can significantly boost the weight loss efforts, together with reasonable diet and increased exercise. But, the extract became interesting to the consumers as a weight loss supplement only after TV host Dr. Oz decided to conduct an experiment on his own, in front of the TV audience. The sales of green coffee extract skyrocketed. The media reacted, as usual, in two ways: mocking the product, or promoting it loudly.

Poor science and poor journalism

In the article in the Forbes magazine, Dr. Oz’s on-the-TV ‘research’ was laughed at and the green coffee bean extract was considered a waste of money. The reason was a small study which Dr. Oz used to support the benefits of green coffee extract. The Forbes’ writer found the study poorly conducted, and consequently concluded that the product is no good. The Dr. Oz’s experiment was called ‘a poor science.’ In the meantime, the writer made his conclusions on that same small study as Dr. Oz,  without investigating other, numerous, studies, on the benefits of green coffee.

Examiner reported that green coffee extract was one of the secret weapons Kim Kardashian used successfully in her efforts to lose weight after she had a baby.

Indian SBwire published several press releases about the benefits of green coffee extract and its success in helping people lose weight after other methods failed.

World News Report published in September 2013 the information about the release to the market of another green coffee extract product and described it as “the most powerful and effective fat burner among weight loss products.”

It is all the fault of Dr. Oz

On December 9, 2012, Canadian Globe and Mail published an article on the green coffee beans extract, questioning its ability to help in weight loss. The writer quoted several doctors and researchers, who criticized the much quoted study by Dr. Vinson and the TV show by Dr. Oz.   

This was enough for the writer as well as quoted scientists to conclude that there is something wrong with the success of the green coffee extract supplement, without bothering to find other, better conducted studies.

In August 2013, US News published an article about the popularity of the green coffee extract as a weight loss aid, wondering about its effectiveness. The writer criticized claims that green coffee can make people lose weight without making healthy changes in the lifestyle, as well as the  poor quality of scientific studies conducted so far.

Today published in September 2013 an article about the buzz green coffee extract is causing in the media and in the weight loss supplement market. The writer did a good job examining a range of studies conducted so far, but concluded that the results are just not as big as media, starting with Dr. Oz, claims. At least the product is safe and harmless, the author concluded.

Most of information on the effects of green coffee beans extract available online comes from the distributors of various green bean products and their promoters. A number of private individual health blogs also commented on the power of green bean extract for weight loss

Benefits on taking green coffee bean extract supplements

The popularity of green coffee bean extract instigated a range of studies about its benefits, particularly when it comes to weight loss. But, long before green beans became a topic of interest, coffee beans were researched for their effects on our health. 

This interesting plant has a large number of active ingredients and there are very few alkaloids which are actually activated during the roasting of coffee. Most of active compounds of coffee are present in higher percentage in green beans than in beans that have been roasted. 

There is nothing in roasted coffee that does not exist in green coffee, except the flavor. Green coffee makes lousy, bitter beverage.

Caffeine in coffee

Caffeine is the main ingredient in coffee that made this beverage so popular. Caffeine is an alkaloid with stimulating affect on our central nervous system. It is the most popular psychoactive drug and the only one safe and legal. Caffeine is toxic in doses over one gram, but most coffee drinkers do not take more than 500 milligrams. Most people drink coffee in order to stay awake and alert and to get a boost of energy when needed.

Caffeine is also a metabolic stimulant, the reason why so many weight loss supplements contain large doses of caffeine.

Several studies found that regular coffee drinking reverses cognitive impairment in elderly Alzheimer patients. Regular coffee drinking also reduced the risk of developing Alzheimers.

A study published in the Journal of the American Medical Association found that regular coffee consumption may reduce the risk of developing gallstone disease due to its caffeine content.

Coffee drinkers are also less likely to develop Parkinson disease. Elderly people who regularly drank coffee tested better on verbal memory and visual and spatial reasoning.

A group of Japanese scientists published in 2009  the results of the study  conducted on 77,000 adults, finding that coffee consumption, due to its caffeine content, may reduce the risk of cardiovascular disease.

Caffeine blocks the negative effects of adenosine on dopamine in the brain, reducing the feelings of depression, actively acting as an antidepressant.

It is not all due to caffeine

The American Journal of Clinical Nutrition published findings of the study that confirmed that regular coffee drinking, with or without caffeine, significantly reduces the risk of the development of type 2 diabetes.

Chlorogenic acid is the second most powerful active ingredient of coffee. It  belongs to the phenolic acids, and as such acts as an antioxidants. 

Antioxidants are compounds that destroy free radicals, which are known to damage cell walls and cause a range of diseases. Chlorogenic acid is more powerful antioxidant than vitamin C. Chlorogenic acid is largely destroyed (70 percents) during the roasting of coffee.

A small study published in 2003 in the American Society for Clinical Nutrition concluded that coffee affects the secretion of gastrointestinal hormone production and glucose tolerance due to the combined effect of caffeine and chlorogenic acid.

A Brazilian study  published in 2008 found that chlorogenic acid in green coffee is beneficial for lowering the risk of cardiovascular disease, type 2 diabetes and Alzheimer's disease, as well as acting as antibacterial and antiinflammatory agent.

Another small study conducted on 16 volunteers found that green coffee extract acts as a weight loss agent and that it lowered body fat percentage.

Similar study conducted by a Norvegian researcher confirmed these findings, concluding that the weight loss can be attributed to the reduction of the glucose absorption by the gastrointestinal tract due to the effects of chlorogenic acid in green coffee. The study concluded that the extended use of coffee enriched with chlorogenic acid can reduce body mass and body fat percentage.

A group of Chinese researchers published in 2012 the results of their study, based on the earlier findings that chlorogenic acid (CGA) delays intestinal absorption of glucose and prevents gluconeogenesis. The study found that chlorogenic acid boosts transport of glucose in skeletal muscles, and that it may have beneficial effects of type 2 diabetes.