13559
Teas infusions composition was assessed by HPLC in a quantitative assay for catechins , purine alkaloids and gallic acid as well as total polyphenol content .
 Chemical: catechins; Chemical: purine alkaloids; Chemical: gallic acid; Chemical: polyphenol
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: catechins; Chemical: purine alkaloids; Chemical: gallic acid; Chemical: polyphenol