Biotechnological Potential of Cereal (Wheat and Rice) Straw and Bran Residues
Cereal straw, one of the most abundant renewable lignocellulose resources which possess valuable components, has gradually become the research hot spot as a promising substitute for both the fossil fuel resource and petroleum-based industry with the increasing calling for bio-fuel and green chemistry. However, existing technologies of straw utilization unilaterally emphasize the primary utilization of the whole plant or some certain components, which not only result in low technical content of corresponding products but also fail to make full use of the lignocellulose resources. Based on the decades of research work, we find out that the bio-structural inhomogeneities of straw, both in the chemical composition and molecular structure between each part of straw, are the ultimate reasons why straw can not be utilized in a whole.Thus, the concept of fractionated conversion of straw emerges as the time requires. In this chapter, this innovative concept is explained in detail by taking the fractionated conversion of the corn straw, rice straw and rice husk as examples. Only through utilizing different parts of straw in the guidance of its structures and characteristics we can make full use of the straw resources.
KeywordsFractionated conversion Biomass total utilization Cereal straw Steam explosion Inhomogeneity Biorefinery
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