Hi 

The reviewer ask this question 

What's the proportion for the peak area of identifiable compounds based on NIST database to the total detected products used GC-MS?

what he mean by this ? and how should I answer him??

''''" The fraction peaks from GC-MS spectrum were identified via National Institute of Standards and Testing (NIST)  library. The identification of the major products was based on a probability match equal or higher than 95%". What's the proportion for the peak area of identifiable compounds based on NIST database to the total detected products used GC-MS? This also should be pointed out in the manuscript.''

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