22432
We suggest that the concentration - dependent protection by sugars resulted from a combination of mechanisms , including : ( 1 ) reduced aqueous O2 solubility , ( 2 ) scavenging of reactive oxygen species , and ( 3 ) chelation of traces of transition metal ions , which is suggested to be the main reason for the differences among the sugars .
 Chemical: sugars; Chemical: O2; Chemical: oxygen; Chemical: transition metal; Chemical: sugars
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: sugars; Chemical: O2; Chemical: oxygen; Chemical: transition metal; Chemical: sugars