Dear All
I already analyzed dragon fruit peel using lc-qtrap-esi msms to identify type of phenolic compounds by using full scanning mode. Here I attached file for your perusal. Can I said this phenolic compound is confirm with data base library matching and ion fragment showed fingerprint for each compounds?. Do you agree with me? As i'm not use authentic standard to make confirmation, just depend on libry database. the one things is the name of phenolic compounds from dragon fruit peel are quite strange
I mean it is not possible - you have no standards for RT and mass and have no exact mass at your system (what about isobars?). You may work with ramping the collision energy and compare ramped spectra, if they are in library - it is real proof, but we use only standards - it is better, because in special cases for our analysis without exact mass MS/MS/MS on the trap is necessary.
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