1. A method of producing a coffee extract, comprising the steps of: a) heat treating green coffee beans in a temperature range from 100 to 180 ° C for at least 5 minutes while maintaining a moisture level of 6 to 50% relative to the total weight of the coffee beans ; and b) extracting the coffee beans processed in step a) to obtain a liquid coffee extract; moreover, coffee beans and / or coffee extract are not roasted. 2. The method according to claim 1, wherein in step a), the green coffee beans are subjected to heat treatment in the temperature range from 130 to 160 ° C for 20 to 120 minutes. The method according to claim 1, wherein in step a), the green coffee beans are heat treated with steam. A method according to any one of the preceding claims, further comprising grinding coffee beans before or after step a) .5. The method according to claim 1, wherein the heat-treated green coffee grains are subjected to extraction in an aqueous solution in step b). The method according to claim 1 or 5, further comprising drying the extract obtained in step b). The method according to claim 1 or 5, wherein the extract obtained in step b) contains more than 4 g of chlorogenic acids per 1 g of green coffee beans subjected to extraction. A method according to any one of claims 1 to 3 or 5, further comprising preparing a composition of the food product or beverage from the extract obtained by carrying out the heat treatment and extraction. The method of claim 8, wherein the composition of the food product or beverage is a powder product for preparing a beverage. Capsule for preparing a drink by injecting liquid, containing a closed chamber and means enabling the specified drink �1. Способ производства экстракта кофе, включающий стадии:a) термической обработки зерен зеленого кофе в диапазоне температур от 100 до 180°C, по меньшей мере, в течение 5 мин, при сохранении уровня влажности от 6 до 50% относительно общей массы зерен кофе; иb) экстракции кофейных зерен, обработанных на с