Why genceutic's African mango. Igob-131 irvingia gabonesis seed extract is the only certified authentic and patented material supported by published clinical university studies. Julius oben, ph.d., university of yaounde i, yaounde, Cameroon, discovered the unique properties of the igob-131 through randomized, double-blind, placebo-controlled investigations. Our African mango strictly uses 100% authentic igob-131® material and does not contain any other non-authentic African mango sources. What is African mango? African mango (irvingia gabonensis) is west African melon used as a food source in Nigeria and Cameroon. African mango seed extract has been shown to inhibit the development of new fat cells in laboratory research. African mango (irvingia gabonensis) is west African melon used as a food source in Nigeria and Cameroon. African mango seed extract has been shown to inhibit the development of new fat cells in laboratory research. Here's how it works: when people are overweight, fat cells become enlarged due to accumulation of fat, and they increase in number and in the amount of the hormone leptin they secrete. African mango fruit furthermore, the more leptin, the harder it is to lose weight. African mango seed extract has been shown to reduce secretion of leptin from fat cells. It has also been shown to increase secretion of adiponectin by fat cells. This is important because adiponectin plays a role in fatty acid metabolism, and higher levels of adiponectin are associated with a lower percentage of body fat. In addition to African mango, this formulation also includes a green tea extract standardized to 50% polyphenols. In human clinical research, green tea polyphenols have demonstrated an ability to promote the oxidation (i.e., burning) of body fat. Genceutic naturals' African mango supplement plus green tea provides African mango seed extract and green tea leaf extract standardized to 50% polyphenols, 15% egcg, and 30% catechins.