21807
By contrast , in neutral medium , free epoxy - xanthophylls were about 2 - fold more stable than were the free hydroxy xanthophylls lutein , zeaxanthin and beta - cryptoxanthin .
 Chemical: epoxy; Chemical: hydroxy; Chemical: lutein; Chemical: zeaxanthin; Chemical: beta - cryptoxanthin
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: epoxy; Chemical: hydroxy; Chemical: lutein; Chemical: zeaxanthin; Chemical: beta - cryptoxanthin