Colour Interval Value Publication Food Name Reference
[ 3.72, 9.24 ) 3.72 mg/100 ml Herbal teas - No 76 - Peppermint tea - Safeway, Inc. Friedman M., et al (2005) Distribution of catechins, theaflavins, .... Journal of Food Science 70:C550-C559
[ 9.24, 14.77 ) 14.76 mg/100 ml Herbal teas - No 77 - Peppermint herbal - The Stash Tea Co., Oregon Friedman M., et al (2005) Distribution of catechins, theaflavins, .... Journal of Food Science 70:C550-C559