Category Archives: BIOFUEL PRODUCTION — RECENT DEVELOPMENTS AND PROSPECTS

Alterations in fermentation conditions

The presence of lignocellulose inhibitors in fermenting medium affects the ethanol and biomass productivities as microorganism take more incubation times to convert into products [Chandel et al., 2007a; Nilvebrant et al., 2001; Zaldivar et al., 2001]. Usually the ethanol productivity is determined by cell-specific productivity and cell mass concentration, cumbersome by lignocellulose-derived inhibitors. To overcome by inhibitors, high cell-mass inocula […]

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Carbon allocation and NUE in annual versus perennial crops

A key challenge for the production of next generation bioenergy feedstocks is increasing yields while maintaining sustainability. As mentioned previously, the existing agricultural concept of NUE relates N uptake to yield (Moll et al., 1982), generally in terms of grain production, and thus has severe limitations in comparing annual to perennial crops. In ecological studies, NUE is associated with whole-plant […]

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Advantages of oilseed meals in fertilizer markets

One concern in using oilseeds as animal feed is cost. As listed in Table 1, soybean meal is 1.9 times greater in cost than DDGS, 2.5 greater than wheat bran, and 2.7 times greater than rice bran. As mentioned above, animal feed accounts for the greatest in any animal operation, therefore animal producers are likely to choose the most economical […]

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Biohydrogen production

4.4.1 Introduction In this article, it will be covered only a discussion on the biohydrogen process, once they are straight connected with the main focus of this article. However, it is necessary to have a clear idea of the existing hydrogen technologies, mainly, its cost, in order to understand the potential for the biological hydrogen production technologies. Also it is […]

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Evaluating the influence of signal transduction pathways on cellulase gene expression

Despite thorough investigation of cellulase induction, transcription, secretion, enzyme function and elucidation of important transcript factors, the role of classical signal transduction pathways in these processes only received little attention for quite some time. Although T. reesei protein kinase C (PKC) was among the first PKCs to be characterized in detail in filamentous fungi (Lendenfeld & Kubicek, 1998; Morawetz et […]

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Sugarcane bagasse-a resource rather than a waste

Sugarcane bagasse is an important, renewable, abundant and cheap or even having negative value agricultural waste in many countries (Bustos et al., 2003; Molina Junior et al., 1995; Rodrigues et al., 2001; Van Haandel, 2005). Composition of the fibrous residue may vary based on its different verities, age of cane at the time of harvesting and efficiency of milling operation […]

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Strain improvement in T. reesei

One of the key issues in fungal strain breeding is the generation of improved producer strains in terms of enzyme yield. In the past this has traditionally been achieved by a combination of classical mutagenesis during which the fungus was exposed to different mutagens such as X-rays, y-rays, UV rays, or chemicals, including N-methyl-N-nitro-N — nitrosoguanidine (NTG) and ethyl methanesulfonate […]

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