Sou Hu Cai Jing·2025-11-17 22:06Core Insights - The Yunnan Consumer Association conducted a comprehensive analysis of 30 popular coffee bean products, including 23 brands from Yunnan and 7 from other regions, confirming that all samples met national food safety standards [1][12][18]. Group 1: Quality Assessment - The analysis included key safety indicators such as heavy metal residues, fungal toxins, pesticide residues, and pathogenic bacteria, with all results showing no detection of harmful substances, indicating the safety of the products [18]. - All 30 coffee bean samples scored 80 points or above in sensory evaluations, qualifying them as "specialty grade" according to the SCA Specialty Coffee Cup Tasting Manual. Five products, including "Biton Coffee" and "Jinshu Coffee," scored above 85 points, categorizing them as "specialty grade - excellent" [19]. Group 2: Quality Standards - Moisture content is a critical quality indicator for roasted coffee beans, affecting flavor and shelf life. The moisture content of the tested samples ranged from 0.53% for "Geo" to 2.07% for "Huangguan Coffee," all within the acceptable limits [20]. - Caffeine content varied among the samples, with the lowest being 10.2 mg/g for "Yunlu" and the highest at 22 mg/g for "Shizhi," aligning with WHO recommendations for daily caffeine intake [20]. Group 3: Consumer Guidance - Consumers are advised to prioritize products with clearly marked roasting dates and to choose beans based on brewing methods. Proper grinding and storage techniques are essential for maintaining flavor [21][22]. - It is recommended to purchase coffee beans in quantities that can be consumed within a short period to ensure optimal flavor experience [23].