Assessment of Mass Flows and Fuel Quality During Mechanical Dehydration of Silages Using Near Infrared Reflectance Spectroscopy

Abstract

This study was implemented to evaluate the potential of near-infrared reflectance spectroscopy (NIRS) technology to estimate chemical composition of dried press cake samples characterised by a wide range of parent materials. A total of 210 samples, derived from two studies on production of solid fuels from agricultural crops by application of the IFBB technology (Integrated production of solid fuels and biogas from biomass), were analysed to determine their chemical composition. A Foss XDSspectrometer was used to obtain near-infrared spectra (400-2,500 nm). Prediction equations, developed for chemical components, showed that NIRS technology could predict N, inorganic ash (ash), crude fiber (CF), ether extract (EE) and nitrogen free extracts (NFE) accurately (RSQ cal and SECV of 0.93 and 0.04 % DM, 0.89 and 0.48 % DM, 0.93 and 1.67 % DM, 0.87 and 0.28 % DM and 0.93 and 1.72 % DM, respectively). Mineral components could also be predicted with a moderate degree of accuracy using NIRS technology (RSQ cal and SECV of 0.85 and 0.10 % DM (K), 0.77 and 0.01 % DM (P) and 0.84 and 0.02 % DM (Cl), respectively), whereas calibration of gross energy (GE) did not succeed. Subsequent, external validation confirmed these results. Regression of mass flows with measured and NIRS-predicted values showed accurate results (RSQ 0.72-0.99) and promise an accelerated quality management in working biogas plants.

Natural variation of OsGluA2 is involved in grain protein content regulation in rice

“…For each plant, 15–20 g of brown rice were prepared for the measurement of grain quality, including AC, GC, starch content, and GPC. The GPC was carefully determined by near-infrared spectroscopy using Infratec 1241 Grain Analyzer (Foss Tecator, Sweden) equipped with STM model 42 . Briefly, approximately 15–20 g dry seeds per sample were dehulled into brown rice using a TR 200 dehuller (Kett, Tokyo, Japan) and loaded into the sample cup.…”

OsAAP6 functions as an important regulator of grain protein content and nutritional quality in rice

“…The population structure of the mini-core collection of 197 accessions was investigated by the model-based method implemented in STRUCTURE 32 33 . Total protein content of the grain was measured with an XDS Near-Infrared Rapid Content Analyzer (NIR, FOSS) by means of near-infrared reflectance spectroscopy 47 . Briefly, a Foss XDS spectrometer was used to obtain near-infrared spectral data between 400 and 2,500 nm at 2-nm intervals.…”