期刊
FOOD CHEMISTRY
卷 158, 期 -, 页码 101-111出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.02.086
关键词
Ginger (Zingiber officinale); Chromatographic fingerprint; Geographical origin; HPLC-DAD; Chemometrics
资金
- Thailand Research Fund
- Chulalongkorn University [PHD/0336/2552]
- Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission [FW0648I]
- Chulalongkorn University, Food and Water Cluster [CU56-FW06]
- Ratchadaphiseksomphot Endowment Fund of Chulalongkorn University [RES560530019-FW]
Chromatographic fingerprints of gingers from five different ginger-producing countries (China, India, Malaysia, Thailand and Vietnam) were newly established to discriminate the origin of ginger. The pungent bioactive principles of ginger, gingerols and six other gingerol-related compounds were determined and identified. Their variations in HPLC profiles create the characteristic pattern of each origin by employing similarity analysis, hierarchical cluster analysis (HCA), principal component analysis (PCA) and linear discriminant analysis (LDA). As results, the ginger profiles tended to be grouped and separated on the basis of the geographical closeness of the countries of origin. An effective mathematical model with high predictive ability was obtained and chemical markers for each origin were also identified as the characteristic active compounds to differentiate the ginger origin. The proposed method is useful for quality control of ginger in case of origin labelling and to assess food authenticity issues. (C) 2014 Elsevier Ltd. All rights reserved.
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