FOOD SCIENCE ›› 0, Vol. ›› Issue (): 118-123.

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Optimization of Extraction Technology for Insoluble Dietary Fiber from Fortuneana pyracantha Fruits by Response Surface Methodology

  

  • Received:2011-01-06 Revised:2011-06-13 Online:2011-07-25 Published:2011-06-18

Abstract: The alkali-catalyzed hydrolysis method was applied to extract insoluble dietary fiber (IDF) from the fruits of Fortuneana pyracantha and main process conditions were optimized by one-factor-at-at-a-time experiments and response surface methodology. The extraction rate and purity of IDF were investigated with respect to NaOH concentration, extraction time, extraction temperature and material-to-liquid ratio. The results showed that the optimal extraction conditions were NaOH concentration of 1.00% (g/g), extraction time of 3.00 h, extraction temperature of 77.8 ℃, and material-to-liquid ratio of 1:17 (g/mL). Under the optimal extraction conditions, the extraction rate and purity of IDF were 56.89% and 92.74%, respectively.

Key words: Fortuneana pyracantha, alkali-catalyzed hydrolysis method, insoluble dietary fiber, response surface analysis

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