Optimization of the main liming process for inulin crude extract from Jerusalem artichoke tubers
Optimization of the main liming process for inulin crude extract from Jerusalem artichoke tubers
Huandong LI, Hongji ZHU(), Jianjun QIAO, Junhu DU, Hua ZHANG
Key Laboratory of Systems Bioengineering, Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
A three-stage homogenate extraction was used as a new method for inulin extraction from Jerusalem artichoke tubers. Compared with the results from conventional hot water extraction, the three-stage homogenate extraction gave higher yields and caused less degradation of the inulin. The inulin crude extract was then clarified by a carbonate-precipitation method, during which three variables — the quicklime mass, the reaction temperature and the reaction time were optimized for the main liming process to give the best clarification effect. A Plackett-Burman design, the path of steepest ascent method, a Box-Behnken design and response surface methodology (RSM) were employed in the experimental design. The optimal conditions for the main liming process were determined to be 12.0 g/L, 71.4°C and 8 min. The confirmatory tests proved that the best clarification efficiency (92.74%) was achieved at these conditions and this was approximately equal to the value predicted by the model.
. Optimization of the main liming process for inulin crude extract from Jerusalem artichoke tubers[J]. Frontiers of Chemical Science and Engineering, 2012, 6(3): 348-355.
Huandong LI, Hongji ZHU, Jianjun QIAO, Junhu DU, Hua ZHANG. Optimization of the main liming process for inulin crude extract from Jerusalem artichoke tubers. Front Chem Sci Eng, 2012, 6(3): 348-355.
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