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. 2014 Nov 17;9(11):e113250. doi: 10.1371/journal.pone.0113250

Table 1. Analysis of five well-known piperamides and crude long pepper extract at a flow rate of 1.0 mL/min with a mobile phase constituted of H2O and methanol.

Time (mins) H20 (%) MeOH (%)
0.0 37.5 62.5
15.0 35.0 65.0
35.0 0.0 100.0
45.0 0.0 100.0
46.0 37.5 62.5