title: Fractionation of triticale, wheat, barley, oats, canola, and mustard straws for the production of carbohydrates and lignins.
abstract: Five cereal (triticale, durum wheat, CPS wheat, feed barley, oats) and two oilseed (canola, mustard) straws were fractionated with pressurized low polarity water in a flow-through reactor at 165°C with a flow rate of 115mL/min and a solvent-to-solid ratio of 60mL/g. The conversion and extraction of the major carbohydrates and lignin from the reactor system during hydrothermal treatment was largely completed within the first 20-30min. Glucan content of all straws were enriched by the process. More than 90% of the xylan and nearly 50% of the lignin were extracted and there was no effect on yield due to crop species. However, there were differences in solid residue and liquid extract composition. Cereal crops yielded a residue richer in glucan and lower in lignin. Oilseed crop residues contained very low levels of ash. Xylo-oligosaccharides from oilseed crops contain more acetyl and uronic acid substituents.
authors.affiliation: Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 4200 Hwy 97, Summerland, BC, Canada V0H 1Z0.
authors.forename: C
authors.initials: C
authors.lastname: Pronyk
authors.forename: G
authors.initials: G
authors.lastname: Mazza
mesh_terms: D018554:Avena / Q000737:chemistry; D029688:Brassica napus / Q000737:chemistry; D002241:Carbohydrates / Q000096:biosynthesis*; D005591:Chemical Fractionation / Q000379:methods*; D005612:Freeze Drying; D001467:Hordeum / Q000737:chemistry; D008031:Lignin / Q000096:biosynthesis*; D009149:Mustard Plant / Q000737:chemistry; D010944:Plants / Q000737:chemistry*; D011312:Pressure; D013696:Temperature; D014908:Triticum / Q000737:chemistry; D014866:Waste Products / Q000032:analysis*; D014867:Water / Q000737:chemistry
chemical_list: D002241:Carbohydrates; D014866:Waste Products; D014867:Water; D008031:Lignin