Properties of microcrystalline cellulose extracted from soybean hulls by reactive extrusion. (July 2015)

• Record Type: Journal Article
• Authors: Merci, Aline; Urbano, Alexandre; Grossmann, Maria Victória E.; Tischer, Cesar A.; Mali, Suzana
• Is Part Of: Food research international. Volume 73(2015:Jul.)
• Page Start: 38
• Page End: 43
• Publication Date: 2015-07
• Subjects: Agro-industrial residue -- Crystallinity -- Lignocellulosic complex; Food -- Analysis -- Periodicals; Food industry and trade -- Periodicals; Food industry and trade -- Canada -- Periodicals; Food Technology -- Periodicals; Food -- Periodicals; Food-Processing Industry -- Periodicals; Aliments -- Industrie et commerce -- Périodiques; Aliments -- Industrie et commerce -- Canada -- Périodiques; Aliments -- Recherche -- Périodiques; Food industry and trade; Canada; Periodicals; Electronic journals; 664.005
• DOI: 10.1016/j.foodres.2015.03.020
• Languages: English
• ISSNs: 0963-9969

Abstract

Abstract: The objectives of this study were to produce microcrystalline cellulose (MCC) from soybean hulls (SH) employing a simple method based on reactive extrusion, and to characterize the product according its microstructure, morphology, crystallinity and thermal stability. MCC was obtained from SH after a two-step extrusion process; in the first step, the SH was extruded with sodium hydroxide (NaOH), followed by extrusion with sulfuric acid (H2 SO4 ) in the second step. The MCC produced from SH by reactive extrusion was composed of short and rod shaped fibers, with a cellulose content of 83.79% and a crystallinity index of 70%. Reactive extrusion is an alternative and effective method for the production of MCC from lignocellulosic residues, and has the advantages of simplicity and was less polluting than conventional methods. Highlights: Microcrystalline cellulose was obtained from soybean hulls by reactive extrusion. Extrusion process was carried out in two steps, first with NaOH, followed by H2 SO4 . Reactive extrusion was effective in obtaining MCC with less effluent production. MCC from soybean hulls were 83.79% cellulose and 70% crystallinity.