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J Agric Food Chem. 2018 Feb 7;66(5):1270-1278. doi: 10.1021/acs.jafc.7b05698. Epub 2018 Jan 30.

Quantification of Major Royal Jelly Protein 1 in Fresh Royal Jelly by Ultraperformance Liquid Chromatography-Tandem Mass Spectrometry.

Author information

1
Key Laboratory of Mariculture & Enhancement, Marine Fisheries Research Institute of Zhejiang Province , Zhoushan 316000, China.
2
Marine and Fisheries Research Institute, Zhejiang Ocean University , Zhoushan, Zhejiang 316000, China.

Abstract

Major royal jelly protein 1 (MRJP1) is the most abundant protein in royal jelly (RJ), and the level of MRJP1 has been suggested as a promising parameter for standardization and evaluation of RJ authenticity in quality. Here, a quantitative method was developed for the quantification of MRJP1 in RJ based on a signature peptide and a stable isotope-labeled internal standard peptide FFDYDFGSDER*(R*, 13C6, 15N4) by ultraperformance liquid chromatography-tandem mass spectrometry. Recoveries of the established method ranged from 85.33 to 95.80%, and both the intra- and interday precision were RSD < 4.97%. Quantification results showed that content of MRJP1 in fresh RJ was 41.96-55.01 mg/g. Abnormal levels of MRJP1 were found in three commercial RJs and implied that these samples were of low quality and might be adulterated. Results of the present work suggested that the developed method could be successfully applied to quantify MRJP1 in RJ and also could evaluate the quality of RJ.

KEYWORDS:

MRJP1; UPLC−MS/MS; quantitative method; royal jelly; signature peptide; stable isotope-labeled internal standard peptide

PMID:
29381065
DOI:
10.1021/acs.jafc.7b05698
[Indexed for MEDLINE]

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