15619
Effect of TiO2 photocatalytic activity in a HDPE - based food packaging on the structural and microbiological stability of a short - ripened cheese .
 Chemical: TiO2
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: TiO2