NDLI: Efficient decomposition of shrimp shell waste using Bacillus cereus and Exiguobacterium acetylicum

Content Provider	Springer Nature Link
Author	Sorokulova, Iryna Krumw, April Globa, Ludmila Vodyay, Vitaly
Copyright Year	2009
Abstract	Two bacterial cultures were isolated and tested for degradation of shrimp shell waste. According to morphological examination, physiological tests, and applied molecular techniques, isolates were identified as Bacillus cereus and Exiguobacterium acetylicum. Both strains were cultivated separately in flasks with 100 mL of shrimp shell waste broth (3% of washed, dried and ground shrimp shell waste in tap water, pH 7.0) at 37°C. At determined periods of time, deproteinization and demineralization of residuals were measured. Fermentation of 3% shell waste with B. cereus indicated 97.1% deproteinization and 95% demineralization. For E. acetylicum, the level of deproteinization and demineralization was 92.8 and 92%, respectively. Protein content was reduced from 18.7 to 5.3% with B. cereus and to 7.3% with E. acetylicum. No additional supplements were used during the fermentation of shell waste. B. cereus strain showed higher efficacy in decomposition of shell waste and was used for large-scale fermentation in 12 L of 10% shrimp shell waste broth. Incubation of bacteria with shell waste during 14 days at 37°C resulted in 78.6% deproteinization and 73% demineralization. High activity of isolated cultures in decomposition of shrimp shell waste suggests broad potential for application of these bacteria in environmentally friendly approaches to chitin extraction from chitin-rich wastes.
Starting Page	1123
Ending Page	1126
Page Count	4
File Format	PDF
ISSN	13675435
Journal	Journal of Industrial Microbiology and Biotechnology
Volume Number	36
Issue Number	8
e-ISSN	14765535
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-05-27
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Shrimp shell waste Bacterial decomposition Bacillus cereus Exiguobacterium acetylicum Microbiology Bioinformatics Biotechnology Genetic Engineering Inorganic Chemistry Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Bioengineering Applied Microbiology and Biotechnology Biotechnology

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