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Optimization of Multi-Strain Solid State Fermentation to Improve the Content of Soybean Meal Protein by Response Surface Analysis
Abstract:
The aim of this study was to optimize the variables which affect the protein content of fermented soybean meal (FSBM) with multi-strain in solid state condition. Response surface methodology (Box-behnken design) was used to design the experiments. Also, the effects of each factor and their interactions on protein content were analyzed. Regression equation between the influencing factors (moisture content, inoculation ratio and fermentation period) and the response value (protein content) was established and the results revealed that the optimal conditions were 56% moisture content, 9.5% inoculation ratio and fermentation periods was 43.5 h. Under these conditions, the actual protein content of FSBM reached 56.96%, which was very close to the predicted value (57.08%). The good correlation between predicted and actual values proved the validity of the response model.
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1234-1238
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May 2013
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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