Colour Interval Value Publication Food Name Reference
[ 0.00, 0.40 ) 0.00 mg/100 ml Commercial grapefruit juice 9 - Pure juice Ross S.A., et al (2000) Variance of common flavonoids by brand o.... Fitoterapia 71:154-161 PubMed (10727812)
[ 0.40, 0.81 ) 0.68 mg/100 ml Fresh-pressed grapefruit Belajova E., et al (2004) Determination of phenolic constituents i.... Food Chemistry 86:339-343
[ 0.81, 1.22 ) 1.21 mg/100 ml 100% grapefruit Belajova E., et al (2004) Determination of phenolic constituents i.... Food Chemistry 86:339-343