World Journal of Microbiology and Biotechnology

, Volume 25, Issue 11, pp 1929–1939 | Cite as

Optimization of amylase production by Aspergillus niger in solid-state fermentation using sugarcane bagasse as solid support material

  • Renato Pérez Rosés
  • Nelson Pérez Guerra
Original Paper


Synthesis of amylase by Aspergillus niger strain UO-01 under solid-state fermentation with sugarcane bagasse was optimized by using response surface methodology and empirical modelling. The process parameters tested were particle size of sugarcane bagasse, incubation temperature and pH, moisture level of solid support material and the concentrations of inoculum, total sugars, nitrogen and phosphorous. The optimum conditions for high amylase production (457.82 EU/g of dry support) were particle size of bagasse in the range of 6–8 mm, incubation temperature and pH: 30.2°C and 6.0, moisture content of bagasse: 75.3%, inoculum concentration: 1 × 107 spores/g of dry support and concentrations of starch, yeast extract and KH2PO4: 70.5, 11.59 and 9.83 mg/g of dry support, respectively. After optimization, enzyme production was assayed at the optimized conditions. The results obtained corroborate the effectiveness and reliability of the empirical models obtained.


Amylase Optimization Solid-state fermentation Sugarcane bagasse 



Response surface methodology


Submerged liquid fermentation


Solid-state fermentation


g of dry support


Total amylase activity


Enzymatic units




Inoculum concentration


Moisture content


Total sugars concentration


Nitrogen concentration


Phosphorous concentration


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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Department of Pharmacy, Natural Science FacultyUniversity of OrienteSantiago de CubaCuba
  2. 2.Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Food Science and Technology Faculty, Ourense CampusUniversity of VigoOurenseSpain

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