A Note on Self-heating and Spontaneous Combustion of Stored Sunflower Seed Cake and Cotton Seeds

Susan M. A. El-Nazir, Ibrahim H. Babikir, Mahdi A. S. Shakak, Ilham A. Sulieman, Raian M. Medani


Sunflower seed cake and cotton seed warehouses combusted spontaneously
and burnt in August and November 2009, respectively, in Khartoum North industrial area. The objective of this study was to determine some of the reasons for self-heating and spontaneous combustion. Representative samples from the two warehouses were collected. Aspergillus niger, A. flavus, Paesiolomyces sp., Rhizopus oryzae, Absidia sp.
were isolated at 37oC. Bacillus thuringiensis was isolated at 37oC, and B. pantothenticus, B. ciculans, B. licheniformis, B. sphaericus, B. badius, Escherichia coli and Klebsiella sp. were isolated at 60oC. A decrease in oil, fibre and phosphorus and increase in free fatty acids and protein contents were detected.


Self-heating; combustion; sunflower seed cake; cotton seeds

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AOAC (1975). Official Methods of Analysis, 12th edition. Association of

Official Analytical Chemists. Washington, DC.

Cowan, S.T. and Steel, K.J. (2004). Mannual for the Identification of

Medical Bacteria, 3rd edition. Cambridge University Press, U.K.

Massimo, P. (2008). Hunting for spook lights. Skeptical Inquirer 32 (5),


Ryckeboer, J.; Mergaert, J.; Coosemans J.; Deprins, K. and Swings, J.

(2003). Total microbial activity during composting of biowaste.

Journal of Applied Microbiology 94, 127–137.

Storm, P.F. (1985) Identification of thermophilic bacteria in solid-waste

composting. Applied and Environmental Microbiology 50 (4),


TIS (2000). Cargo loss Prevention Information. German Marine Insurers.

Transport Information Service (TIS), Germany


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