Determination of L-Ergothioneine in Cosmetics Based on Ultraperformance Liquid Chromatography-Tandem Mass Spectrometry

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Sample</td><td class="align_center">Mean concentrations/(<i>μ</i>g·kg<sup>−1</sup>)</td><td class="align_center">SD/(%)</td><td class="align_center">RSD/(%)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Cream</td><td class="align_center">178</td><td class="align_center">4.51</td><td class="align_center">2.53</td></tr><tr><td class="align_left">Toner</td><td class="align_center">188</td><td class="align_center">3.62</td><td class="align_center">1.93</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The stability assay of L-EGT in the cream and toner.</div>

International Journal of Analytical Chemistry

tab4

Table 4

Table 4: Determination of L-Ergothioneine in Cosmetics Based on Ultraperformance Liquid Chromatography-Tandem Mass Spectrometry 