26578
Although beta - carotene protected both photosensitisers in O / W emulsions , beta - carotene displayed antioxidative or prooxidative properties , which depended on the polarity of the photosensitisers .
 Chemical: beta - carotene; Chemical: beta - carotene
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: beta - carotene; Chemical: beta - carotene