Table 6.

Linear regression of amino acids to crude protein for samples used in the total calibration (CAL).

Item	Sample statistics		Linear regression to CP
	NCAL	CV, %	Intercept	Slope	RSQreg
ALA	387	64.38	−0.51	0.44	0.94
ARG	387	83.81	−4.03	0.08	0.91
ASP	387	93.94	−7.32	0.12	0.93
CYS	395	48.48	0.76	0.01	0.83
GLU	387	48.93	8.14	0.17	0.86
GLY	387	66.67	−0.89	0.05	0.95
HIS	387	67.50	−0.56	0.03	0.96
ILE	387	72.06	−1.57	0.05	0.97
LEU	387	63.64	−0.94	0.08	0.96
LYS	395	84.81	−3.08	0.06	0.87
MET	395	57.14	0.23	0.01	0.85
PHE	387	59.26	−0.11	0.05	0.96
PRO	387	38.52	6.85	0.04	0.56
SER	387	65.00	−0.83	0.05	0.97
THR	395	67.21	−0.93	0.04	0.96
TRP	163	72.73	−0.15	0.01	0.94
TYR	369	70.91	−0.81	0.04	0.95
VAL	387	61.18	−0.38	0.05	0.98
CP	607	47.68	–	–	–

CP = crude protein; N = the number of samples; CV = (the SD of the measured values/mean of measured values) × 100; RSQ = regression coefficient; ALA = alanine; ARG = arginine; ASP = aspartic acid; CYS = cysteine; GLU = glutamic acid; GLY = glycine; HIS = histidine; ILE = isoleucine; LEU = leucine; LYS = lysine; MET = methionine; PHE = phenylalanine; PRO = proline; SER = serine; THR = threonine; TRP = tryptophan; TYR = tyrosine; VAL = valine.