TY - JOUR
T1 - Feasibility study on the use of attenuated total reflectance mid-infrared spectroscopy for the analysis of malt quality parameters in wort
AU - Cozzolino, D.
AU - Schultz, D.
AU - Allder, K.
AU - Eglinton, J.
AU - Roumeliotis, S.
N1 - Publisher Copyright:
© 2014 The Institute of Brewing & Distilling.
PY - 2014
Y1 - 2014
N2 - The feasibility of using attenuated total reflectance in combination with mid-infrared (MIR) spectroscopy for the analysis of malt quality parameters in wort, such as free α-amino acid (FAN), apparent attenuation limit (AAL), soluble protein (SP) and viscosity (VIS), was evaluated. The coefficients of determination in cross-validation RCV2 and the standard error of cross-validation were 0.81 and 10.3mgL-1 for FAN, 0.80 and 1.49% for AAL, 0.78 and 0.18% for SP and 0.69 and 0.13cP for VIS. Good calibration and validation statistics were obtained for AAL. However, for nitrogenous compounds the MIR predictions can only be used as approximate estimates of the true concentrations, for example to rank samples (low, medium, high) in the context of a breeding programme.
AB - The feasibility of using attenuated total reflectance in combination with mid-infrared (MIR) spectroscopy for the analysis of malt quality parameters in wort, such as free α-amino acid (FAN), apparent attenuation limit (AAL), soluble protein (SP) and viscosity (VIS), was evaluated. The coefficients of determination in cross-validation RCV2 and the standard error of cross-validation were 0.81 and 10.3mgL-1 for FAN, 0.80 and 1.49% for AAL, 0.78 and 0.18% for SP and 0.69 and 0.13cP for VIS. Good calibration and validation statistics were obtained for AAL. However, for nitrogenous compounds the MIR predictions can only be used as approximate estimates of the true concentrations, for example to rank samples (low, medium, high) in the context of a breeding programme.
KW - Apparent attenuation limit
KW - Attenuated total reflectance
KW - FAN
KW - Mid infrared
KW - Wort
UR - http://www.scopus.com/inward/record.url?scp=84939176922&partnerID=8YFLogxK
U2 - 10.1002/jib.173
DO - 10.1002/jib.173
M3 - Article
AN - SCOPUS:84939176922
SN - 0046-9750
VL - 120
SP - 385
EP - 389
JO - Journal of the Institute of Brewing
JF - Journal of the Institute of Brewing
IS - 4
ER -