Combustion Chemistry: Meaning of OH, H2O2 in Combustion

[Auteng]

What is the meaning of the appearance of the following species in a combustion:

-OH

-H2O2

 

[BvU]

Where do they appear ?

 

[Auteng]

thousands of reactions occur in the combustion...
I want to know what is the meaning of the appearance of each species...

 

[BvU]

I don't understand your question. If it appears in the combustion reaction, it is being formed. Why should there be a meaning associated with that ?
If it appears in a textbook or in an article, you might help us assist you by quoting some more context.
OH^- is usually a negatively charged radical. $\$ -OH can mean a lot of things, including OH^-
H₂O₂ is hydrogen peroxide. -H2O2 could be a doubly negative radical H₂O₂^2-

 

[Auteng]

No, not meaning like that
For example appearance of CH2O shows cool flame...

 

[BvU]

I see. You want to know what causes the formation of OH^- and/or H₂O₂^2- ( or just H₂O₂ ?) in a flame !
A bit like http://www.icders.org/ICDERS2011/PapersICDERS2011/ICDERS2011-0328.pdf ?