| It contains two coloring principles, catechin and catechu-tannic acid. |
| Apples contain an anti-inflammatory flavonoid called quercetin, while red wine contains the flavonoid catechin. |
| The green tea extract in HydroxyTea contains chemical elements called polyphenols, like the catechin epigallocatechin gallate. |
| The new device can decaffeinate tea leaves without reducing the amount of catechin and amino acids. |
| Black Catechu, a component of SJS, was found to have polyphenol components such as catechin which has strong scavenging effects on oxygen radicals. |
| Catechu tannin and catechin are compounds of the catechol tannin type. |
