Method for identifying seabuckthorn origin and/or varieties based on rapid evaporation ionization mass spectrometry
A rapid evaporation and ionization technology, applied in the field of analysis and detection, to achieve the effects of fast detection speed, stable results, high sensitivity and resolution
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[0031] 1.1 Reagents and instruments
[0032] Xevo G2-XS quadrupole time-of-flight mass spectrometer, equipped with iKnife handheld sampling device (Waters, USA); Pump11 elite needle pump injection sampler (Harvard, USA); SGE 10mL syringe (TRAJAN, Australia), Milli Q ultrapure Water treatment system (Millipore, USA); Masslynx 4.1 data acquisition software, Live ID statistical analysis software (Waters, USA). Methanol, acetonitrile, isopropanol (chromatographically pure, U.S. Merck company); Leucine enkephalin (Sigma company), the experimental water is the ultrapure water prepared by Millipore ultrapure water instrument; 12 parts of seabuckthorn deep autumn red, Four parts of seabuckthorn with small fruit come from four production areas of Xinjiang, Heilongjiang, Jilin and Liaoning respectively, all of which are fresh seabuckthorn fruits.
[0033] 1.2 Mass Spectrometry Conditions
[0034] Use an iKnife electric knife to cut into the seabuckthorn sample with a cutting length of...
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