22155
Astaxanthin , a member of the carotenoid family , is the only known ketocarotenoid transported into the brain by transcytosis through the blood - brain barrier .
 Chemical: Astaxanthin
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: Astaxanthin 
Answer:
 Chemical: Astaxanthin