Robusta Coffee Blend
Also known as: Robusta coffee, green coffee extract, Coffea canephora, chlorogenic acids, 5-O-caffeoylquinic acid, organic acids, formic acid, acetic acid
Overview
Robusta coffee, scientifically known as *Coffea canephora*, is derived from the seeds of its namesake plant. It is characterized by a higher caffeine content and distinct acid profile compared to its Arabica counterpart. Rich in chlorogenic acids (CGAs), particularly 5-O-caffeoylquinic acid (5-CQA), Robusta coffee is often used as a weight loss supplement due to its potential effects on glucose metabolism and fat accumulation. Additionally, it possesses commendable antioxidant properties. Although research surrounding Robusta coffee is moderate and presents mixed results, numerous studies have observed its physiological effects, particularly regarding weight loss and antioxidant capacity. Overall, Robusta coffee can be consumed as a brewed beverage or in supplement form, notably as green coffee extract (GCE), to maximize its health benefits.
Benefits
Evidence-backed benefits of Robusta coffee include weight loss and antioxidant properties. A meta-analysis indicated a significant difference in body weight reduction among individuals using green coffee extract compared to placebo; however, the variability in study quality suggests caution in interpreting results. Overweight and obese individuals stand to benefit the most, with moderate effects observed over several weeks. Furthermore, the antioxidant properties attributed to the high levels of CGAs can help neutralize oxidative stress in the body. Despite promising indications, the strength of evidence varies, necessitating further research to substantiate claims.
How it works
The primary mechanism of action of chlorogenic acids in Robusta coffee involves the inhibition of glucose absorption in the gastrointestinal tract, which influences lipid metabolism and may support weight management. Chlorogenic acids interact with specific enzymes, such as glucose-6-phosphatase, involved in glucose and fat metabolism. These interactions contribute to the potential weight loss effects observed in clinical studies, alongside the overall high bioavailability of these compounds when consumed.
Side effects
Robusta coffee is generally considered safe for consumption; however, potential side effects primarily stem from its high caffeine content. Common side effects that may occur (>5% frequency) include jitteriness, anxiety, and insomnia, although specific side effects from Robusta coffee supplements are not well-documented. Some users may experience gastrointestinal upset (1-5%), including diarrhea and stomach discomfort, likely due to the organic acid content. Rare side effects (<1%) have not been reported. Caution is advised for individuals sensitive to caffeine, as well as for pregnant or breastfeeding women and those with medical conditions such as hypertension or heart issues due to possible drug interactions with stimulants and certain medications.
Dosage
Recommended dosages for Robusta coffee extracts vary, with studies suggesting an intake of 400-1000 mg of chlorogenic acids daily. While the optimal dosage remains unclear, it is commonly advised to consume green coffee extract with meals to alleviate potential gastrointestinal side effects. The maximum safe dose of caffeine is generally considered to be 400 mg per day, so caution is warranted regarding excessive consumption. The high bioavailability of chlorogenic acids supports their efficacy, but factors such as food matrix and individual metabolism can influence absorption rates.
FAQs
How much caffeine is in Robusta coffee extract?
Robusta coffee extract typically contains more caffeine than Arabica coffee, contributing to its stimulant effects.
Is it safe for long-term use?
Long-term safety of Robusta coffee has not been thoroughly studied; moderation and caution are recommended.
Can it be used with other supplements?
It may interact with other stimulants and certain medications, so consult with a healthcare provider before combining.
What are the potential side effects?
Common side effects are linked to caffeine intake, such as jitteriness and gastrointestinal discomfort.
When should I take it?
For best results and to minimize side effects, it is advisable to take Robusta coffee with meals.
Research Sources
- https://onlinelibrary.wiley.com/doi/10.1155/2011/382852 – This systematic review and meta-analysis of randomized clinical trials found a significant difference in body weight between green coffee extract users and placebo, while also noting high risk of bias and heterogeneity among studies.
- https://pubmed.ncbi.nlm.nih.gov/34553656/ – A review of sensory measurements and meta-analysis provided insights into the acidic compound profiles of roasted Robusta coffee compared to Arabica, revealing that roasting impacts chlorogenic acid concentration.
- https://pubmed.ncbi.nlm.nih.gov/35056759/ – This experimental study assessed various coffee blends and found that Robusta coffee beans contain higher levels of bioactive compounds, including chlorogenic acids, contributing to notable antioxidant activity.
- https://www.tandfonline.com/doi/full/10.1080/10408398.2021.1957767 – A comprehensive examination of the chemical composition of Robusta coffee revealed its potential health benefits, particularly focusing on its antioxidant properties and bioactive parameters.
- https://sca.coffee/sca-news/2021/10/19/acids-in-coffee-a-review-of-sensory-measurements-and-meta-analysis-of-chemical-composition – This review highlighted the sensory and chemical differences between Robusta and Arabica coffee, recognizing Robusta's unique acidic composition and potential health-promoting effects.