The power of metabolite profiling can also be applied to milk and fermented milk. We have added some examples of how much information can be achieved just with one GC-MS method.
Milk may be fermented by starter cultures. Suggestions on how to apply metabolite profiling:
The milk and fermented milks were compared using a GC-MS method which measures amino acids and other organic acids simultaneously. Around one hundred compounds were measured. Below are four figures:
1) A principal component analysis (PCA) of the results of the fermented milks
2) Bar plots of different classes of compounds.