Extracting method of coffee bean by low temperature with low caffeine and high chlorogenic acid content

摘要

The present invention relates to a method for extracting low-caffeine low-temperature coffee beans with increased chlorogenic acid content, wherein the roasting time of coffee beans is adjusted to the shortest time, and the coffee bean extract is obtained by using a cold brew extraction method of extracting at room temperature (low temperature). Therefore, the content of chlorogenic acid, which is known to have excellent effects such as antioxidant activity, anti-aging, disease prevention, obesity reduction, blood sugar reduction, etc., contained in green beans can be significantly improved compared to general cold brew (Dutch method) extraction method. Since it contains less caffeine, it relates to a low-caffeine low-temperature coffee bean extraction technology with increased chlorogenic acid content that allows you to consume less caffeine even if you drink a small amount and consume a large amount of beneficial active ingredients. According to the present invention, since the roasting time is adjusted to the shortest time in the manufacturing process of the coffee bean extract and rapidly cooled to room temperature immediately after the first pop (cracking) after roasting, the chlorogenic acid weak at high temperatures is not destroyed much, and almost all of the chlorogenic acid is not destroyed. In order to facilitate the extraction of the chlorogenic acid, unlike the conventional cold brew extraction method, the elution amount of chlorogenic acid can be secured as much as possible by controlling the appropriate tamping and powderiness and extracting at low temperature for a certain period of time at room temperature. The amount of caffeine eluted can be reduced by using the room temperature extraction method instead, and the content of chlorogenic acid can be significantly increased by up to 20 times compared to the existing Dutch-type coffee compared to the conventional Dutch coffee method. It is possible to prepare coffee that is effective in