Determination of Volatiles in Liquors by GC-FID with Dual Acquisition System

Introduction

Alcoholic beverages contain various volatile compounds that are desirable for their flavors [1]. Unfortunately, some unwanted volatile compounds (due to their toxicities) could be present too and need to be reduced or removed in the products. For alcoholic beverages with low amount of ethanol (below 10%), such as beer, headspace coupled with gas chromatograph (HS-GC) technique could be utilized to monitor the volatile compounds [1]. However, liquor or spirit drinks are not suitable for headspace due to their high ethanol content. Thus, liquid injection was utilized for this experiment. Due to the various volatile components present in liquors, it was not feasible to separate all of them in one column. To avoid frequent downtime, this test was carried out using GC with dual acquisition system available in Shimadzu NexisTM GC-2030.

August 27, 2020 GMT