High resolution gas chromatographic method for determination of Robusta coffee in commercial blends

✍ Scribed by Frega, Natale ;Bocci, Fabio ;Lercker, Giovanni

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 351 KB
• Volume: 17
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240170504

✦ Synopsis

Abstract

The unsaponifiable lipid fractions extracted from Arabica and Robusta coffee samples were analyzed by high resolution gas chromatography (HRGC) in a polar column with a thermally stable stationary phase (TAP, Chrompack). Certain characteristic ratios among diterpenic alcohols were found to permit measurement of the amount of Robusta blended with Arabica coffee, given a minimum content of 5–10%. Determination does not appear to be influenced by geographic origin of produce or even by decaffeination.