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Table 5 Most abundant ions present in the C. roseus leaf extract. A list of most abundant ions present in the periwinkle leaf extract, detected by LCMS-IT-ToF Mass Spectrometer (IT-ToF, Shimadzu) using analytical C18 column and 10–100% acetonitrile gradient against 0.1% formic acid in water

From: Antibiotic-resistant bacteria in the guts of insects feeding on plants: prospects for discovering plant-derived antibiotics

Ion m/z

Retention time [min.]

Compound name

457.2317

0.829

vindoline

397.2108

2.193

MDC-Cat-HPLC-E-POS-F1–397.2–6.93

377.0871

2.360

loganic acid

349.1539

2.893

serpentine

521.06

1.884

MDC-Cat-HPLC-E-POS-F1–521.204-2.05

458.2358

0.829

MDC-Cat-HPLC-E-POS-F1–458.207-9.83

439.219

0.84

MDC-Cat-HPLC-E-POS-F1–439.202-9.5

520.9128

0.400

MDC-Cat-HPLC-E-POS-F1–520.217-9.48

656.8851

0.200

MDC-Cat-HPLC-E-POS-F1–656.345-13.73

397.2112

5.554

MDC-Cat-HPLC-E-POS-F1–397.2–6.93

  1. The ions were matched with some known metabolites from the C. roseus metabolomics database based on their m/z ratios. For ions without a good match in the database, the closest match was listed