期刊
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
卷 96, 期 5, 页码 1209-1216出版社
SPRINGER
DOI: 10.1007/s00253-012-4221-y
关键词
Aspergillus terreus; Itaconic acid; Optimization; Submerse cultivation; Scale up
资金
- Fachagentur Nachwachsende Rohstoffe e.V. [22008203]
- Sudzucker AG
Biotechnologically produced itaconic acid (IA) is a promising organic acid with a wide range of applications and the potential to open up new application fields in the area of polymer chemistry, pharmacy, and agriculture. In this study, a systematic process optimization was performed with an own isolated strain of Aspergillus terreus and transferred from a 250-mL to a 15-L scale. An IA concentration of 86.2 g/L was achieved within 7 days with an overall productivity of 0.51 g/(L h), a maximum productivity of 1.2 g/(L h), and a yield of 86 mol%. A cultivation of other well-known A. terreus strains with the developed process showed no significant differences. Based on this, a process is developed providing a high final IA concentration independent of the used strain combined with high reproducibility.
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