25449
Development of electrochemical biosensor with nano - interface for xanthine sensing - A novel approach for fish freshness estimation .
 Chemical: xanthine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: xanthine 
Answer:
 Chemical: xanthine