Method for determination of carbohydrates employed in the selection of adulterations in coffee

Química Nova

Pauli, Elis Daiane¹  Universidade Estadual de Londrina, Londrina, Brasil¹  Nixdorf, Suzana Lucy¹  Cristiano, Valderi¹ 

关键词: adulterants;    carbohydrates;    HPLC-UV-VIS.;   

DOI  :  10.1590/S0100-40422011000400023

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The objective in this work was to validate a chromatography method for the determination of total carbohydrates in soluble coffee, using a HPLC-UV-VIS with postcolumn derivatization system, in order to verify adulterant additions. The validated method was accurate and robust. Adulteration could be observed by increasing xylose and glucose levels in samples with addition of coffee husks and starchy products while decreasing of galactose and mannose characteristic carbohydrates presenting in high concentration in soluble coffees produced by arabica and robusta coffee beans.

【 授权许可】

Unknown