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The concentration of HODE metabolites was lower when the oil contained either natural antioxidants from olive - oil pomace or a synthetic autooxidation inhibitor as dimethylsiloxane .
 Chemical: HODE; Chemical: dimethylsiloxane
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: HODE; Chemical: dimethylsiloxane