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31.
Santos Alexandre S. Sampaio Ana Paula W. Vasquez Gina S. Santa Anna Lídia M. Pereira Nei Freire Denise M. G. 《Applied biochemistry and biotechnology》2002,98(1-9):1025-1035
Culture conditions involving variations in carbon and nitrogen sources and different C:N ratios were examined with the aim
of increasing productivity in the process of rhamnolipid synthesis by Pseudomonas aeruginosa. In addition to the differences in productivity, the use of different carbon sources resulted in several proportions related
to the types of rhamnolipids synthesized (monorhamnolipids and dirhamnolipids). Furthermore, the variation in nutrients, mainly
the nitrogen source, resulted in different amounts of virulence factors, as phenazines and extracellular proteins. The data
point out a new concern in the choice of substrate to be used for rhamnolipid production by P. aeruginosa: toxic byproducts. 相似文献
32.
Takeyama Haruko Wada Masumi Matsunaga Tadashi 《Applied biochemistry and biotechnology》2002,98(1-9):319-326
Soil bacteria were studied for the production of biodegradable cleaning agents. Among 86 bacterial strains resistant to liquid
paraffin, 58 showed hemolytic activity. These strains were cultured, and the supernatant of culture broths was evaluated for
cleaning activity against a dirty porcelain tile. Potent activity was exhibited in 18 strains. The lowest value of surface
tension was obtained from Bacillus sp. NKB03 suggesting the presence of a biosurfactant. Aeromonas sp. NKB26c and Bacillus cereus NKB46b exhibited enzymatic cleaning activity. A cleaning efficiency of 82% was achieved when using a mixture of supernatants
from culture broths of Bacillus sp. NKB03 and Aeromonas sp. NKB26c in synthetic minimal media. The cleaning efficiency using this mixture was higher than that of sodium dodecyl
sulfate. These results suggest that a mixture of supernatants from culture broths of Bacillus sp. NKB03 and Aeromonas sp. NKB26c has potential for commercial use as a biocleaner. 相似文献