期刊
FOOD CHEMISTRY
卷 228, 期 -, 页码 403-410出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2017.02.015
关键词
Saffron; Quality control; Authenticity markers; Glycosylated kaempferols; Geniposide; Liquid chromatography-mass spectrometry; QTOF
资金
- Spanish Ministry of Science and Innovation [CTQ2009-09022]
- Comunidad Autonoma of Madrid (Spain)
- FEDER program [S2013/ABI-3028]
- University of Alcala [UAH2011/EXP-020]
- Ministry of Science and Innovation [BES-2010-033465]
- University of Alcala
- Ministry of Economy and Competitiveness (Spain) [RYC-2013-12688]
A liquid chromatography-(quadrupole-time of flight)-mass spectrometry methodology was developed to assess the authenticity of saffron through the analysis of a group of kaempferol derivatives recently proposed as novel authenticity markers as a result of a metabolomic study of saffron (kaempferol 3-O-glucoside, kaempferol 3-O-sophoroside, kaempferol 3,7-O-diglucoside, kaempferol 3,7,4'-O-triglucoside, kaempferol 3-O-sophoroside-7-O-glucoside). Geniposide was also studied as an adulteration marker of saffron with gardenia. The optimized chromatographic conditions enabling the simultaneous separation of glycosylated kaempferols and geniposide consisted of the use of a C18 column and an elution gradient with acetonitrile and water as mobile phases (both with formic acid at 0.1%). A strategy was proposed to evaluate the minimum quantifiable adulteration percentage which was established at a 0.2% regardless of the adulterant employed. The analysis of nineteen commercial samples showed the method to be specific and suitable for saffron quality control. (C) 2017 Elsevier Ltd. All rights reserved.
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