The effect of raw materials addition on the yield of citric acid biosynthesis by solid state fermentation
2003
Gasiorek, E. | Lesniak, W. (Akademia Ekonomiczna, Wroclaw (Poland). Katedra Biotechnologii Zywnosci)
A solid state fermentation method was developed for citric acid production from different substrates by culturing Aspergillus niger S. A sugar beet pulp was applied as the main substrate, it was enriched by raw materials such as: tapioca, beet or cane molasses, corn starch, wheat bran and potato waste pulp. The yield of cytric acid varied depending on the type of different substrate added, it ranged from 68 g/kg d.s. for wheat bran added, to 160 g/kg d.s. as for potato waste pulp, and up to more than 200 g/kg d.s. as for the addition of tapioca and cane molasses
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