Green Coffee Bean Extract
Green coffee bean extract (Coffea arabica) is from unroasted green coffee beans. In comparison to roasted coffee beans, green coffee beans have higher levels of cholinergic acid.
Cholinergic acid may benefit the body by working as an antioxidant, antibacterial, and chemo-protective agent.1,2 Adequate consumption of green coffee bean extract may lower blood pressure, body weight, and accumulation of fat in the liver.2-5
Excess consumption of green coffee beans may cause an excessive intake of caffeine. Caffeine may cause restlessness, insomnia, headache, abdominal pain, nausea, diarrhea, or vomiting.6
Iwai K, Kishimoto N, Kakino Y, Mochida K, Fujita T. In vitro antioxidative effects and tyrosinase inhibitory activities of seven hydroxycinnamoyl derivatives in green coffee beans. J Agric Food Chem. 2004 Jul 28;52(15):4893-8. PubMed PMID: 15264931.
Bharath N, Sowmya NK, Mehta DS. Determination of antibacterial activity of green coffee bean extract on periodontogenic bacteria like Porphyromonas gingivalis, Prevotella intermedia, Fusobacterium nucleatum and Aggregatibacter actinomycetemcomitans: An in vitro study. Contemp Clin Dent. 2015 Apr-Jun;6(2):166-9. doi: 10.4103/0976-237X.156036. PubMed PMID: 26097349; PubMed Central PMCID: PMC4456736.
Watanabe T, Arai Y, Mitsui Y, Kusaura T, Okawa W, Kajihara Y, Saito I. The blood pressure-lowering effect and safety of chlorogenic acid from green coffee bean extract in essential hypertension. Clin Exp Hypertens. 2006 Jul;28(5):439-49. PubMed PMID: 16820341.
Vinson JA, Burnham BR, Nagendran MV. Randomized, double-blind, placebo-controlled, linear dose, crossover study to evaluate the efficacy and safety of a green coffee bean extract in overweight subjects. Diabetes Metab Syndr Obes. 2012;5:21-7. doi: 10.2147/DMSO.S27665. Epub 2012 Jan 18. Retraction in: Diabetes Metab Syndr Obes. 2014;7:467. PubMed PMID: 22291473; PubMed Central PMCID: PMC3267522.
Shimoda H, Seki E, Aitani M. Inhibitory effect of green coffee bean extract on fat accumulation and body weight gain in mice. BMC Complement Altern Med. 2006 Mar 17;6:9. PubMed PMID: 16545124; PubMed Central PMCID: PMC1513603.
Higdon, J. Coffee. Oregon State University: Linus Pauling. 2005. (Reviewed by Katan, MB in 2008) Accessed July 2015. http://lpi.oregonstate.edu/mic/food-beverages/coffee