6634
Tea products from the purple leaf coloured tea cultivars had levels of TPs , total catechin ( TC ) and antioxidant activities similar to those from the green leaf coloured cultivars , except for teas from the Japanese cultivars that were very low in the assayed parameters .
 Chemical: catechin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: catechin