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- Title
Simultaneous and selective production of levan and poly(?-glutamic acid) byBacillus subtilis.
- Authors
Ing-Lung Shih; Yun-Ti Yu
- Abstract
Bacillus subtilis(natto) Takahashi, used to prepare the fermented soybean product natto, was grown in a basal medium containing 5% (w/w) sucrose and 1.5% (w/w)l-glutamate and produced 58% (w/w) poly(?-glutamic acid) and 42% (w/w) levan simultaneously. After 21 h, 40-50 mg levan ml-1had been produced in medium containing 20% (w/w) sucrose but withoutl-glutamate. In medium containingl-glutamic acid but without sucrose, mainly poly(?-glutamic acid) was produced.
- Subjects
FRUCTANS; BACILLUS subtilis; GLUTAMIC acid; FERMENTED soyfoods; BACILLUS (Bacteria); EXCITATORY amino acids; POLYSACCHARIDES
- Publication
Biotechnology Letters, 2005, Vol 27, Issue 2, p103
- ISSN
0141-5492
- Publication type
Article
- DOI
10.1007/s10529-004-6936-z