Near-Infrared Spectroscopy and Chemometrics for the Routine Detection of Bilberry Extract Adulteration and Quantitative Determination of the Anthocyanins

Table 2

Summary of the NIRS validation statistics.

Parameters	Total ACNs in bilberry extracts
ACN content	% dried matter
N	27
Outliers	0
Min	18.3
Mean	25.7
Max	33.9
SD	4.4
RMSEP	0.303
r^2	99.51
SEP	0.28
Rank	7
RPD	15.4
Bias	−0.114
Slope	0.9704
Offset	0.8755