The results showed that the turbidity had strong positive correlation to caffeine concentration after caffeine was added to instant tea liquor and tea was decaffeinated with supercritical CO2.

• 结果表明，添加咖啡碱及用超临界CO2脱除咖啡碱，速溶茶茶液的浊度与咖啡碱含量成显著的正相关。