咖啡品种、产地和萃取方法:对咖啡有益健康功效的影响。

Coffee variety, origin and extraction procedure: Implications for coffee beneficial effects on human health.

机构信息

Department of Biotechnologies and Biosciences, University of Milano-Bicocca, P.zza della Scienza 2, 20126 Milan, Italy.

出版信息

Food Chem. 2019 Apr 25;278:47-55. doi: 10.1016/j.foodchem.2018.11.063. Epub 2018 Nov 12.

Abstract

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.

摘要

我们建立了一个有效的协议,用于快速分析绿色和烘焙咖啡提取物的 NMR 谱,使得每个谱图的代谢物自动识别和定量分析可以在大约两分钟内完成。该方法允许对咖啡样品的代谢组学进行分析,并随后评估其生物活性化合物的含量和抗氧化活性,这取决于它们的种类(阿拉比卡和罗布斯塔)、地理起源和提取程序(水醇、浓缩咖啡和摩卡)。就低分子量化合物(特别是绿原酸)的产率而言,水醇提取是最有效的方法,而摩卡提取则提供了最高量的类黑素。此外,阿拉比卡咖啡中有益化合物(绿原酸、葫芦巴碱和胆碱)与咖啡因的比例更高。收集的数据为选择用于制备基于咖啡的膳食补充剂、营养保健品和功能性饮料的咖啡原料提供了有用的见解。

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