Studies on slime-forming organisms of a paper mill--slime production and its control

Chaudhary, A and Gupta, L.K. and Gupta, J.K. and Banerjee, U C (1997) Studies on slime-forming organisms of a paper mill--slime production and its control. Journal of Industrial Microbiology and Biotechnology, 18 (5). pp. 348-352. ISSN 1367-5435

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Abstract

Bacteria, yeast and filamentous fungi were isolated from various sites within a paper mill. Bacillus alvei and Aerobacter aerogenes were the most prevalent contaminating bacteria. Maximum slime was produced by A. aerogenes (4.2 mg ml-1) at pH 6.5 and by B. alvei (7.2 mg ml-1) at pH 7.5 in white water. The optimum temperature was 408C for maximum slime production by both organisms. In the presence of levanase, a 25% reduction in dosages of a biocide (BioplusÒ) was observed. Killing of A. aerogenes, which was achieved in 8 h with 20 ppm BioplusÒ, could be obtained in 6 h with the combined use of levanase and a lower concentration of BioplusÒ (15 ppm). With B. alvei almost the same inhibitory effect (4.22-log decrease) was obtained at 20 ppm BioplusÒ, and in combination with a lower concentration of BioplusÒ (15 ppm) and enzyme. The paper properties did not show any adverse effect after treatment with levanase and BioplusÒ.

Item Type:	Article
Additional Information:	Copyright of this article belongs to Springer Science.
Uncontrolled Keywords:	slime production; Bacillus alvei; Aerobacter aerogenes; coated broke; white water; biocide (BioplusÒ); levanase
Subjects:	Q Science > QR Microbiology
Depositing User:	Dr. K.P.S.Sengar
Date Deposited:	27 Jan 2012 14:59
Last Modified:	02 Apr 2012 09:30
URI:	http://crdd.osdd.net/open/id/eprint/767

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