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Q. Helmy, P. E. Suryatmana, V. Kardena and F. Wisjnuprapto, “Effect of Surfactant Addition on Oil Sludge Biodegradation by Petrofilic Bacteria,” The 3rd International Conference on Environmental Technology and Management, Bandung-Indonesia, October 2006, pp. 1-5.

has been cited by the following article:

• TITLE: Influence of Antibiotics and Surfactants Addition on Growth and Methionine Productivity by Bacillus cereus

  AUTHORS: Kelechi Stanley Dike, Ikechukwu Amechi Ekwealor, Samuel Chukwunyelum Eziuzor

  KEYWORDS: Methionine; Bacillus cereus; Fermentation; Antibiotics; Surfactants

  JOURNAL NAME: Advances in Microbiology, Vol.3 No.1, March 27, 2013

  ABSTRACT: The effects of antibiotics and surfactant addition on methionine accumulation in the broth culture of three strains of methionine yeilding Bacillus cereus (B. cereus DS-13, B. cereus AS-9 and B. cereus RS-16) recovered from different soil ecovars in Owerri Nigeria were investigated. Ampicillin and erythromycin neither stimulated growth nor enhanced methionine production in Bacillus cereus DS-13, while tetracycline and chloramphenicol stimulated growth and enhanced methionine yield in Bacillus cereus DS-13 and Bacillus cereus AS-9. Ampicllin had the highest stimulatory effect on growth and methionine production in Bacillus cereus RS 16. Tween 80 and palmitic acid stimulated growth and improved methionine accumulation in the broth culture of all Bacillus strains while stearic acid did not improve yield in all Bacillus strains.