NMR Confirmation and HPLC Quantification of Javamide-I and Javamide-II in Green Coffee Extract Products Available in the Market
Author
Source
International Journal of Analytical Chemistry
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-23
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Javamide-I/javamide-II are phenolic amides found in coffee.
Recent reports suggested that they may contain several biological activities related to human health.
Therefore, there is emergent interest about their quantities in coffee-related products.
Green coffee extract is a powder extract made of unroasted green coffee beans, available as a dietary supplement.
However, there is little information about the amounts of javamide-I/javamide-II in green coffee extract products in the market.
Therefore, in this paper, javamide-I/javamide-II were extracted from green coffee extract products and their identifications were confirmed by NMR.
After that, the amounts of javamide-I/javamide-II were individually quantified from seven different green coffee extract samples using the HPLC method coupled to an electrochemical detector.
The HPLC method provided accurate and reliable measurement of javamide-I/javamide-II with excellent peak resolution and low detection limit.
In all seven green coffee extract samples, javamide-II was found to be between 0.28 and 2.96 mg/g, but javamide-I was detected in only five samples in the concentration levels of 0.15–0.52 mg/g, suggesting that green coffee extract products contain different amounts of javamide-I/javamide-II.
In summary, javamide-I/javamide-II can be found in green coffee extract products sold in the market, but their amounts are likely to be comparatively different in between green coffee extract brands.
American Psychological Association (APA)
Park, Jae B.. 2017. NMR Confirmation and HPLC Quantification of Javamide-I and Javamide-II in Green Coffee Extract Products Available in the Market. International Journal of Analytical Chemistry،Vol. 2017, no. 2017, pp.1-6.
https://search.emarefa.net/detail/BIM-1157504
Modern Language Association (MLA)
Park, Jae B.. NMR Confirmation and HPLC Quantification of Javamide-I and Javamide-II in Green Coffee Extract Products Available in the Market. International Journal of Analytical Chemistry No. 2017 (2017), pp.1-6.
https://search.emarefa.net/detail/BIM-1157504
American Medical Association (AMA)
Park, Jae B.. NMR Confirmation and HPLC Quantification of Javamide-I and Javamide-II in Green Coffee Extract Products Available in the Market. International Journal of Analytical Chemistry. 2017. Vol. 2017, no. 2017, pp.1-6.
https://search.emarefa.net/detail/BIM-1157504
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157504