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Investigators from University of Isfahan Have Reported New Data on Immobilized Cells

February 11, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Immobilized Cells. According to news reporting out of Esfahan, Iran, by NewsRx editors, research stated, "Organic sulfur components of the petroleum are too resistant to be removed by the conventional desulfurization processes. This study aimed to investigate the removal of dibenzothiophene (DBT) as an organic sulfur compound, from the oily phase by a bioprocess employing the immobilized cells."

Our news journalists obtained a quote from the research from the University of Isfahan, "Rhodococcus erythropolis R1 cells were encapsulated in calcium alginate beads by considering factors such as the alginate concentration, size of the beads, the concentration of surfactants and gamma-Al2O3 nano particles for optimizing biodesulfurization (BDS) via Taguchi approach. The impact of two cofactor precursors (nicotinamide and riboflavin) on the long term BDS efficiency was also examined. The results indicated that the optimum factor levels for the bigger is better criterion could be achieved at 20% (w/w) of gamma-Al2O3 nano particles, alginate beads size equal to 1.5 mm, 1% (w/v) of the alginate and 0.5% (v/v) of span 80. The related statistical analysis showed that the concentration of gamma-Al2O3 nano particles was the most significant factor in the BDS process. Moreover, the addition of nicotinamide and riboflavin significantly decreased the biocatalytic inactivation of the immobilized cells system after successive operational steps enhancing the BDS efficiency by more than 30% after four steps."

According to the news editors, the research concluded: "It can be concluded that a combination of the nano gamma-Al2O3 particles with alginate immobilized cells could be very effective in biodesulfurization process."

For more information on this research see: Taguchi optimization of dibenzothiophene biodesulfurization by Rhodococcus erythropolis R1 immobilized cells in a biphasic system. International Biodeterioration & Biodegradation, 2014;86():343-348. International Biodeterioration & Biodegradation can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier -; International Biodeterioration & Biodegradation -

Our news journalists report that additional information may be obtained by contacting P. Derikvand, Univ Isfahan, Fac Adv Sci & Technol, Dept. of Biotechnol, Esfahan 8174673441, Iran. Additional authors for this research include Z. Etemadifar and D. Biria (see also Immobilized Cells).

Keywords for this news article include: Iran, Asia, Esfahan, Immobilized Cells

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Source: Life Science Weekly

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