Welcome to Biomass Chemical Engineering,

›› 2012, Vol. 46 ›› Issue (6): 12-16.

• 研究报告 • Previous Articles     Next Articles

Optimization of Ultrasonic-assisted Extraction of Tannic Acid from Chinese Gallnut Using Response Surface Method

ZHANG Zong-he1,2, MIN Fan-qin2, QIN Qing1,2, XU Hao1,2, LI Wen-jun2, WANG Cheng-zhang1,2   

  1. 1. Nanjing Longyuan Natural Polyphenols Synthesis Factory, Nanjing 210032, China;2. Institute of Chemical Industry of Forestry Products, CAF; National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab.of Forest Chemical Engineering, SFA; Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2012-09-28 Revised:1900-01-01 Online:2012-11-30 Published:2012-11-30

Abstract: The ultrasonic-assisted extraction of tannic acid from Chinese gallnut with water as extraction agent were determined on the basis of single factor experiment using response surface method (RSM). According to central composite (Box-Behnken) design principle, the effect of three independent variables on the yield of tannic acid, namely liquid to solid ratio, ultrasonic extraction time, and ultrasonic power was investigated. The results showed the optimum ultrasonic-assisted extraction conditions were: 5 g of Chinese gallnut powder, liquid to solid ratio 38:1 (mL:g), ultrasonic extraction time 32 min, ultrasonic power 250 W. Under the optimum conditions, the extraction yield of tannic acid was 66.0%.

Key words: Chinese gallnut, tannic acid, response surface method, exaction, ultrasonic

CLC Number: