Green coffee bean extract is derived from unroasted coffee beans of the Coffea robusta species. Unlike roasted coffee, green coffee beans retain higher levels of chlorogenic acids, which are believed to be responsible for many of their health benefits. Coffea robusta is a species known for its hardiness and higher caffeine content compared to Coffea arabica. Â
The primary active constituents in green coffee bean extract are:
These are a family of phenolic compounds with antioxidant and anti-inflammatory properties. Â
Although present, it's generally in lower concentrations than in roasted coffee.
Including caffeic acid, ferulic acid, and quinic acid.
CGAs are thought to inhibit glucose absorption in the intestine and enhance insulin sensitivity, potentially contributing to blood sugar regulation. Â
CGAs act as potent antioxidants, scavenging free radicals and reducing oxidative stress. Â
Some studies suggest that CGAs may influence lipid metabolism, potentially contributing to weight management.
Certain CGAs may have vasodilatory effects, potentially contributing to blood pressure regulation.
Several studies have explored the effects of green coffee bean extract on weight loss. Some trials have shown modest reductions in body weight and body fat, but results are mixed, and more high-quality research is needed. Â Â
Some studies indicate that green coffee bean extract may improve insulin sensitivity and reduce postprandial blood glucose levels. However, further research is necessary to confirm these findings. Â Â
Some clinical trials have shown that green coffee bean extract may have a mild antihypertensive effect, particularly in individuals with mild hypertension. Â
Studies have demonstrated the antioxidant capacity of green coffee bean extract in vitro and in vivo