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. 2023 Jan 3;12(1):113. doi: 10.3390/antiox12010113

Figure 1.

Figure 1

Mass spectra of betanin standard and Opuntia robusta extract. (A) Extracted ion chromatogram (EIC) and mass spectrum of betanin standard. (B) Mass spectrum of O. robusta sample. The EIC and mass spectra were analyzed via UPLC–QTOF–MS/MS.