As a representative category of traditional Chinese scented tea, the quality of jasmine green tea directly impacts the consumer experience and market reputation. Achieving consistent product quality requires a standardized management system throughout the entire process, from raw material selection and process control to finished product testing.
Raw material quality is fundamental. High-quality jasmine green tea requires fresh, roasted green tea leaves with one bud and one leaf, or one bud and two leaves, as the base. It requires a lustrous green color and a pure aroma. For fresh jasmine flowers, buds picked during the summer blooming season (July-August) are preferred, requiring white, plump flowers with a rich aroma. Raw material procurement is strictly graded and inspected based on origin and picking time. The moisture content of green tea must be ≤7%, and the degree of openness of fresh jasmine flowers must be controlled between 60% and 70%.
Precise process parameters. The scenting process is the core of quality, requiring strict control of temperature, humidity, and the thickness of the scenting pile. Traditional scenting techniques require a temperature of 20-25°C and a relative humidity of 80%-85%. The tea-flower ratio is typically 1:1-1:1.5 (high-end teas are scented multiple times). Modern production utilizes intelligent temperature and humidity control systems to precisely control the scenting time to 3-5 hours per batch, and uses an off-the-ground airing process to prevent microbial contamination. Drying is carried out in stages, with an initial drying temperature of 80-85°C to remove moisture and a secondary drying temperature of 60-70°C to enhance aroma. The final moisture content is controlled below 6%.
Systematized quality inspection. Finished products undergo both sensory evaluation and physical and chemical testing. Appearance requirements include tight, even tea leaves with visible white hairs, a bright yellow-green tea liquor, a fresh, long-lasting aroma (a ratio of jasmine to tea aroma ≥ 3:7), and a mellow, sweet flavor. Physical and chemical testing includes moisture (≤6.0%), fines content (≤3.0%), pesticide residue (in compliance with GB 2763), and heavy metal content (lead ≤2mg/kg). Companies are advised to introduce near-infrared spectroscopy technology for rapid, non-destructive testing, and implement dynamic monitoring of critical control points in conjunction with the HACCP system.
Through the coordinated management of standardized raw materials, digitalized processes, and intelligent testing, the flavor stability and safety of jasmine green tea can be effectively guaranteed, providing consumers with high-quality tea products that combine aesthetic appeal with health benefits.
