Extracting weight loss active ingredients from green coffee
The group has developed a process for extracting chlorogenic acids (CGAs) from green coffee beans, coffee leaves, and coffee fruit pulp by grinding the raw materials into a fine powder and then extracting with 50% ethanol. The resulting crude extract is then refined, removing caffeine and protein to create a pure CGAs extract solution.
During the research, the group quantified the CGAs content in raw materials and extracts using HPLC-DAD technique. The results showed that the CGAs content in green coffee beans ranged from 7.03 to 11.21%, while the leaves and pulp of coffee fruits had contents of 0.54–0.82% and 1.53–1.85%, respectively. This shows that coffee leaf by-products and pulp can be used as raw materials for CGAs extraction. The extracts from seeds, leaves and pulp all had CGAs content of over 50%, suitable for adding to instant coffee products to effectively support weight loss, with a dosage of less than 100mg of CGAs for 1–1.5g of coffee powder.
The group has completed the process of extracting and refining CGAs with a scale of 10 kg of raw materials/batch, serving mass production. The project has been accepted and evaluated as meeting the requirements by Dak Nong Department of Science and Technology, opening up a new development direction for the Vietnamese coffee industry, contributing to increasing the value and diversifying products from coffee trees, while supporting consumers in losing weight and controlling weight.