title: Rapid determination of carbohydrates, ash, and extractives contents of straw using attenuated total reflectance fourier transform mid-infrared spectroscopy.
abstract: Analysis of the chemical components of lignocellulosic biomass is essential to understanding its potential for utilization. Mid-infrared spectroscopy and partial least-squares regression were used for rapid measurement of the carbohydrate (total glycans; glucan; xylan; galactan; arabinan; mannan), ash, and extractives content of triticale and wheat straws. Calibration models for total glycans, glucan, and extractives showed good and excellent predictive performance on the basis of slope, r², RPD, and R/SEP criteria. The xylan model showed good and acceptable predictive performance. However, the ash model was evaluated as providing only approximate quantification and screening. The models for galactan, arabinan, and mannan indicated poor and insufficient prediction for application. Most models could predict both triticale and wheat straw samples with the same degree of accuracy. Mid-infrared spectroscopic techniques coupled with partial least-squares regression can be used for rapid prediction of total glycans, glucan, xylan, and extractives in triticale and wheat straw samples.
authors.affiliation: Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada , 4200 Highway 97, Summerland, British Columbia, Canada V0H1Z0.
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Tamaki
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Mazza
mesh_terms: D002241:Carbohydrates / Q000032:analysis*; D002523:Edible Grain / Q000737:chemistry*; D010936:Plant Extracts / Q000032:analysis*; D018547:Plant Stems / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D014908:Triticum / Q000737:chemistry*
chemical_list: D002241:Carbohydrates; D010936:Plant Extracts