25443
The addition of 200mg / kg alpha - tocopherol significantly improved the stability of beta - carotene in the conjugate stabilised emulsion .
 Chemical: alpha - tocopherol; Chemical: beta - carotene
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: alpha - tocopherol, beta - carotene 
Answer:
 Chemical: alpha - tocopherol; Chemical: beta - carotene