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As part of a comprehensive study of the physiochemical and biological properties of phytosteryl phenolates , successfully synthesized chemoenzymatically in our lab , their antioxidant activity was evaluated using three different in vitro model systems , namely bulk oil model system , beta - carotene - linoleate model system and low - density lipoprotein cholesterol ( LDL - C ) oxidation assay .
 Chemical: phytosteryl phenolates; Chemical: beta - carotene; Chemical: linoleate; Chemical: cholesterol
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: phytosteryl phenolates; Chemical: beta - carotene; Chemical: linoleate; Chemical: cholesterol