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Biological Treatment of Soy Straw: Physicochemical Characterization

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A modified bag retting procedure was evaluated for treatment of soy straw using the normal microbial flora resident on the material harvested from the field straw. The resultant treated fibers were then characterized for structural changes by optical microscopy and scanning electron microscopy, FTIR, XRD and TGA analysis, and compared with untreated fibers. The FTIR analysis demonstrated significant reduction of pectin and waxy materials while XRD studies showed increase in the crystallinity of the fibers. The crystallinity of the fibers increased from 75.3% to 88.90% for outer fiber and from 80.7% to 92.34% for inner woody fiber after the treatments. The thermal characteristics support the potential of using the soy straw as filler and reinforcement with polymers, as there are very minor changes in the thermal stability due to the treatment procedure.
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Document Type: Research Article

Publication date: December 1, 2009

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  • The goal of the creation of a biobased economy is challenging to agriculture, forestry, academia, government and industry. The extractable resources of the Earth are finite, regardless of the quibble over when they will be depleted. The economic, political and social demands for biobased chemicals, materials and energy are expected to radically transform the materials industries, particularly the plastics industry as well as the biofuel industry. These changes will be based on the principles of sustainability, eco-efficiency, industrial ecology, and green chemistry and engineering. In keeping with the growth of knowledge in this field, there is a strong need for a forum to share original research related to biobased materials and bioenergy. The Journal of Biobased Materials and Bioenergy (JBMB) has been created as an international peer-reviewed periodical to fulfill the need for communication in these research areas. This journal will encompass related research activities in all fields of science, engineering and the life sciences.
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