Active compound

Spectrum region for analysis [cm⁻¹]

Statistical method

Calibration model

Validation model

r2

SEC

r2

SEP

Carvacrol

1125 - 1095

PLS

0.982

0.961

0.987

0.923

PLS-1st derivative

0.993

0.672

0.996

0.620

Thymol

1170 - 1140

PLS

0.978

0.920

0.981

0.948

PLS-1st derivative

0.994

0.695

0.995

0.636

P-cymene

1050 - 1017

PLS

0.988

0.904

0.975

0.910

PLS-1st derivative

0.992

0.823

0.993

0.785