Abstract:

Puerh tea from Yunnan was used as the major raw material to extract its bioactive components through ultrasound and microwave-assisted method. β-cyclodextrin technology was exploited to reduce the loss of volatile components and resolve the difficulties in synchronized granulation due to acid-base compositions. Results: The optimal extraction conditions for bioactive components from tea were material-liquid ratio of 1:80, pH 5.5, ultrasonic power of 30 kW, ultrasonic treatment time of 10 min, microwave power of 400 W and microwave treatment time of 5 min. Meanwhile, the optimal formula for effervescent tablets of puerh tea was 35% purified powder of puerh tea, 45% acid-base amount, 1% adhesive agents, 5% lubricants and 14% glucose. Conclusion: The products obtained at the optimal processing meet the requirements of Pharmacopoeia and technological processing is feasible and stability.

Key words: puerh tea, effervescent tablet, single-step granulation method