期刊
FOOD CHEMISTRY
卷 278, 期 -, 页码 47-55出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.11.063
关键词
Green coffee beans; Roasted coffee beans; Arabica and Robusta coffee; Coffee origin; NMR metabolic profiling; Antioxidant capacity; Chlorogenic acids; Melanoidins
资金
- Fondazione CARIPLO
- Regione Lombardia [2015-0763]
We set up an efficient protocol for the rapid analysis of NMR spectra of green and roasted coffee extracts, enabling the automatic identification and quantification of metabolites in approximately two minutes per spectrum. This method allowed for the metabolic profiling and the subsequent evaluation of the content of bioactive compounds and antioxidant activity of coffee samples, depending on their species (Arabica and Robusta), geographical origin and extraction procedure (hydroalcoholic, espresso and moka). The hydroalcoholic extraction is the most efficient method in terms of yields of low molecular weight compounds (in particular chlorogenic acids), while moka extraction provides the highest amounts of melanoidins. Moreover, that the ratio between health-giving compounds (chlorogenic acids, trigonelline and choline) and caffeine is higher in Arabica coffees. The data collected provide useful insights for the selection of coffee raw material to be used in the preparation of coffee-based dietary supplements, nutraceuticals and functional beverages.
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