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Table 4 The most abundant ions present in the periwinkle root extract fraction with antibacterial activity, 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

349.1700

7.755

serpentine

397.2112

6.928

MDC-Cat-HPLC-E-POS-F1–397.2–6.93

315.0734

6.429

MDC-Cat-HPLC-E-POS-F1–315.119-6.43

396.2036

10.808

MDC-Cat-HPLC-E-POS-F1–396.184-10.81

350.1733

5.658

MDC-Cat-HPLC-E-POS-F1–350.172-5.66

377.0871

2.360

loganic acid

349.1539

2.893

serpentine

337.1836

7.153

catharanthine

398.2159

10.314

MDC-Cat-HPLC-E-POS-F1–398.145-10.31

397.2108

6.928

MDC-Cat-HPLC-E-POS-F1–397.2–6.93

  1. The ions were matched with 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