The Use of Partial Least Square Regression and Spectral Data in UV-Visible Region for Quantification of Adulteration in Indonesian Palm Civet Coffee

Table 1

Descriptive statistic of luwak content in coffee samples used for developing calibration and prediction in luwak-arabica coffee blend.

Item	Calibration and validation sample set	Prediction sample set
Number of samples	58	40
Range	1.0~0.5	1.0~0.5
Mean	0.828	0.888
Standard deviation	0.181	0.171
Unit	Gram	Gram