Agricultural and Biosystems Engineering Publications

Campus Units

Agricultural and Biosystems Engineering, Chemistry, Civil, Construction and Environmental Engineering, Food Science and Human Nutrition, Toxicology

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

2016

Journal or Book Title

Journal of the Institute of Brewing

Volume

122

Issue

1

First Page

84

Last Page

92

Research Focus Area(s)

Biological and Process Engineering and Technology

DOI

10.1002/jib.295

Abstract

Most alcoholic beverages contain small amounts of chemicals other than ethanol, the congeners. These are byproducts of the fermentation process of the substrate. Congeners are implicated in contributing to hangover (veisalgia) symptoms and it is therefore considered expedient to remove these substances. This research compared 12 established vodka brands with a new product by GC‐MS‐olfactometry. A new vodka produced in Iowa from corn was found to be the purest while another corn‐based vodka and a potato‐based vodka contained eight and 12 impurities each. Eight other commercially available vodkas contained 15–19 impurities and three vodkas showed more than 30 impurities. Neither the raw material nor the country of origin made a difference to the level of the impurities. However, the treatment process was of great importance in terms of reaching lower impurity levels. Multiple distillations and filtration did not seem to benefit the quality, nor did charcoal and activated carbon alone. However, one vodka based on a multiple distilled neutral grain spirit process from corn contained zero measurable volatile impurities. The particular treatment process involved ozonation, followed by granular activated carbon and a nano‐noble‐metal catalysis and adsorption.

Comments

This is an Accepted Manuscript of an article published by Taylor & Francis as Cai, Lingshuang, Somchai Rice, Jacek A. Koziel, William S. Jenks, and J. Hans Leeuwen. "Further purification of food‐grade alcohol to make a congener‐free product." Journal of the Institute of Brewing 122, no. 1 (2016): 84-92.. Available online DOI: 10.1002/jib.295. Posted with permission.

Copyright Owner

The Institute of Brewing & Distilling2

Language

en

File Format

application/pdf

Published Version

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