Table 1. Linearity, limit of detection, and limit of quantification of retinol, β-carotene, α-tocopherol, and cholesterol analyses

Analytes Regression equation(y=ax+b)1) Correlationcoefficient (R2) LOD2)(μg/100 g) LOQ3)(μg/100 g)
Retinol y=204.15x-0.9242 0.9998 0.018 0.049
β-Carotene y=161.08x-8.6993 0.9997 0.064 0.087
α-Tocopherol y=(1×106)x+22011 0.9999 0.089 0.236
β-Tocopherol y=(1×106)x+4980.7 1.0000 0.098 0.258
γ-Tocopherol y=(2×106)x+38906 0.9999 0.075 0.200
δ-Tocopherol y=(2×106)x-20255 1.0000 0.072 0.161
Cholesterol y=10.286x+0.0006 0.9998 47.082 122.018
1)y and x indicate peak area (mAU) and concentration, respectively.
2)Limit of detection.
3)Limit of quantification.