Royal
jelly is an apicultural product, fed to the queen bee and consumed by humans as
a health food and traditional medicine; its beneficial effects on human health have been the subject of several studies. As royal jelly is obtained in small
amounts and reaches a high market price, it could be adultered with other
cheaper substances. As it is prone to degradation at room temperature,
lyophilization is used to prolong its shelf life.
Due to the complex
composition of royal jelly, several different parameters need to be evaluated
to determine of freshness, purity and quality; consuming an appreciable amount
of sample and time. Electrospray ionization mass spectrometry (ESI-MS)fingerprinting was carried out in the negative ion mode on a high resolution FT-ICR mass spectrometer; marker compounds were identified by comparison of their high
resolution mass with data from literature. ESI-MS fingerprinting was capable of
characterizing natural, lyophilized, degraded and adultered samples of royal
jelly, and indicate marker compounds for each set of samples, with the aid of
Principal Component Analysis.
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