Improved production of reducing sugars from rice straw using crude cellulase activated with Fe₃O₄/alginate nanocomposite

Bioresource Technology
Neha SrivastavaManish Srivastava

Abstract

Effect of Fe3O4 nanoparticles (NPs) and Fe3O4/Alginate nanocomposites (NCs) have been investigated on production and thermostability of crude cellulase enzyme system obtained by newly isolated thermotolerant Aspergillus fumigatus AA001. Fe3O4 NPs and Fe3O4/Alginate NCs have been synthesized by co-precipitation method and characterized through various techniques. In presence of Fe3O4 NPs and Fe3O4/Alginate NCs, filter paper activity of crude cellulase was increased about 35% and 40%, respectively in 72 h as compared to control. Fe3O4/Alginate NCs treated crude enzyme was thermally stable up to 8h at 70°C and retained 56% of its relative activity whereas; control samples could retain only 19%. Further, the hydrolysis of 1.0% alkali treated rice straw using Fe3O4/Alginate NCs treated cellulase gave much higher sugar productivity than control at optimal condition. These findings may be utilized in the area of biofuels and biowaste management.

References

May 13, 2009·Nanotechnology·Rocktotpal KonwarhAshis Kumar Mukherjee
Sep 17, 2011·Journal of Agricultural and Food Chemistry·Yi-Ming TaoQing-Xi Chen
Apr 12, 2014·Carbohydrate Polymers·Moslem Mansour LakourajEhsan Nazarzadeh Zare

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