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Each sample was resuspended in 20 l of LC/MS grade water and 10 l per sample was injected into a 5500 QTRAP, a hybrid triple quadrupole/linear ion trap mass spectrometer, using a quantitative polar metabolomics profiling platform with selected reaction monitoring (SRM) that covers all major metabolic pathways

The stability of Glutathione in solution is pH-dependent

Afr J Microbiol Res 5(20):31503156 Huang H-C, Chang T-M (2012) Antioxidative properties and inhibitory effect of Bifidobacterium adolescentis on melanogenesis