Heat Extraction of Corn Fiber Hemicellulose

Production of feruloylated arabinoxylo-oligosaccharides from maize (Zea mays) bran by microwave-assisted autohydrolysis

“…The decrease in pH and release of insoluble material into solution (Table 2) support the occurrence of autohydrolysis of maize bran insoluble material upon microwave treatment (Benko et al, 2007). The major products discovered in maize bran autohydrolysate liquors were arabinose and xylose, which occurred as oligomers, along with esterified ferulic acid.…”

“…Indeed, there was a marked increase in monosaccharides from 2 to 10 min of treatment time and furfural (from monosaccharide degradation) increased dramatically among all treatment times at this temperature (Table 4). Interestingly, Benko et al (2007) used microwave-assisted autohydrolysis to release the arabinoxylan fraction from corn fibre. Corn fibre is the term used for the bran fraction obtained from corn wet-milling, as opposed to the maize bran obtained from dry-milling used in this study.…”

Rapeseed straw as a renewable source of hemicelluloses: Extraction, characterization and film formation

“…The water extraction resulted in significantly lower yields than the alkaline extraction conditions. Previous studies (Barman et al, 2014;Benkö et al, 2007;Izydorczyk, Macri, & MacGregor, 1998;Lundqvist et al, 2003) have demonstrated that the pH of the extraction medium influences the yield, molecular weight (M w ), and structure of hemicelluloses extracted from different plant materials. Hemicelluloses are typically susceptible to hydrolysis at elevated pH and undergo peeling and partial degradation often leading to increasing solubilization (Carvalheiro et al, 2008;Garrote et al, 1999).…”

“…Hemicellulose has long been of high interest as a resource in existing and future developing biorefineries and is most preferably obtained from sources previously considered low-cost waste and where there is no competition with existing food production (Ragauskas et al, 2006;FitzPatrick, Champagne, Cunningham, & Whitney, 2010). The extraction and isolation of hemicelluloses have been studied for decades (Yanovsky, 1939;Hägglund, Lindeberg, & McPherson, 1956) and have lately attracted increasing attention Willför et al, 2003;Benkö et al, 2007;Kabel, Bos, Zeevalking, Voragen, & Schols, 2007;Parajó, Garrote, Cruz, & Dominguez, 2004;Parsons, Cenkowski, Sorensen, Beta, & Arntfield, 2013;Carvalheiro, Duarte, & Gírio, 2008). Different agricultural wastes, such as wheat straw (Sun, Sun, Fowler, & Baird, 2005;Sun, Tomkinson, Wang, & Xiao, 2000a;Fang, Sun, Salisbury, Fowler, & Tomkinson, 1999;Sun, Lawther, & Banks, 1998;Sun, Lawther, & Banks, 1996;Sun, Lawther, & Banks, 1995;Ruiz et al, 2013), barley husks (Roos, Persson, Krawczyk, Zacchi, & Stålbrand, 2009), maize stems, rye straw, rice straw (Song, Pranovich, & Holmbom, 2012;Xiao, Sun, & Sun, 2001; to make barrier films (Edlund, Ryberg Zhu, & Albertsson, 2010;Ruiz et al, 2013;Benkö et al, 2007;Hartman, Albertsson, & Sjöberg, 2006a;Hartman, Albertsson, Söderqvist Lindblad, & Sjöberg, 2006b;Gröndahl, Eriksson, & Gatenholm, 2004;Goksu, Karamanlioglu, Bakir, Yilmaz, & Yilmazer, 2007;Zhang & Whistler, 2004;Mikkonen et al, 2009;Saadatmand et al, 2013;...…”

“…Extraction parameters such as temperature, pH and time will ultimately influence the possible applications of the extracted fractions, such as fuel or packaging and coatings (Carvalheiro et al, 2008;Hansen & Plackett, 2008;Gírio et al, 2010). Glucomannan has been shown to dissolve with a preserved polymeric structure in the hot aqueous liquor during thermomechanical pulping (Willför et al, 2003;Song, Pranovich, Sumerskiy, & Holmbom, 2008;Benkö et al, 2007;Lundqvist et al, 2002;Lundqvist et al, 2003;Teleman, Nordström, Tenkanen, Jacobs, & Dahlman, 2003). The extraction of hemicelluloses using alkaline reagents and water from plant material is also well established (Carvalheiro et al, 2008).…”