FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (20): 47-51.doi: 10.7506/spkx1002-6630-201020010

• Processing Technology • Previous Articles     Next Articles

Optimizing the Extraction of Red Pigments from Dry Roselle Calyx by Response Surface Methodology

ZENG Zhe-ling,HAO Chun-qing,LU Wei,PENG Chao   

  1. State Key Laboratory of Food Science and Technology, College of Life Science and Food Engineering, Nanchang University,
    Nanchang 330047, China
  • Received:2010-01-25 Revised:2010-07-01 Online:2010-10-25 Published:2010-12-29
  • Contact: ZENG Zhe-ling E-mail:zlzengjx@163.com

Abstract:

In order to develop an optimal procedure for the extraction of red pigments from dry roselle calyx, single factor method and responses surface methodology (RSM) were applied to study the effects of material/liquid ratio and extraction duration and temperature and their interactions on the total anthocyanin content of the extract. Material/liquid ratio was found to be the most important affecting factor, followed by extraction duration and temperature. The optimal values of the three conditions were determined as follows: material/liquid ratio, 1:24.8; extraction duration, 1.52 h; extraction temperature, 48.74 ℃, and the total anthocyanin content of the extract obtained was 487.6 mg/100 g.

Key words: roselle calyx, red pigmente, extraction, response surface methodology

CLC Number: