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. 2016 Oct 25;1(4):663–668. doi: 10.1021/acsomega.6b00220

Figure 1.

Figure 1

MRM chromatograms for FruArg and l-lysine-d8. FruArg (top) and l-lysine-d8 (bottom) were eluted from the column at 5.9 and 6.1 min, respectively. Their parent–daughter ion pairs were monitored as 337.3 → 70.1 and 155.1→92.1 Da, respectively. The peak areas of the MRM chromatograms were integrated and used for quantification. All FruArg concentration calculations were relative to l-lysine-d8 I.S.