21929
At 75 degrees C , organic peroxides ( ROOH ) were less oxidative than hydrogen peroxide ( H2O2 ) , and antioxidant enzymes were less efficient than vitamin E and carnosine at protecting proteins against oxidation .
 Chemical: organic peroxides; Chemical: ROOH; Chemical: hydrogen peroxide; Chemical: H2O2; Chemical: vitamin E; Chemical: carnosine
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: organic peroxides, ROOH, hydrogen peroxide, H2O2, vitamin E, carnosine 
Answer:
 Chemical: organic peroxides; Chemical: ROOH; Chemical: hydrogen peroxide; Chemical: H2O2; Chemical: vitamin E; Chemical: carnosine