The Occurrence of Glycosylated Aroma Precursors in Vitis vinifera Fruit and Humulus lupulus Hop Cones and Their Roles in Wine and Beer Volatile Aroma Production

Andrew Caffrey; Susan E Ebeler

doi:10.3390/foods10050935

The Occurrence of Glycosylated Aroma Precursors in Vitis vinifera Fruit and Humulus lupulus Hop Cones and Their Roles in Wine and Beer Volatile Aroma Production

Foods. 2021 Apr 24;10(5):935. doi: 10.3390/foods10050935.

Authors

Andrew Caffrey^{1

2}, Susan E Ebeler^{1

2}

Affiliations

¹ Department of Viticulture and Enology, University of California, Davis, CA 95616, USA.
² Food Safety and Measurement Facility, University of California, Davis, CA 95616, USA.

Abstract

Volatile aroma compounds found in grapes and hops may be present as both free volatiles and bound glycosides. Glycosides found in the raw materials are transferred to their respective fermented beverages during production where the odorless compounds may act as a reservoir of free volatiles that may be perceived by the consumer if hydrolyzed. A review of the literature on grape and wine glycosides and the emerging literature for glycosides in hops is presented in order to demonstrate the depth of history in grape glycoside research and may help direct new research on hop glycosides. Focus is brought to the presence of glycosides in the raw materials, the effect that winemaking and brewing have on glycoside levels, and current methods for the analysis of glycosidically linked aroma compounds.

Keywords: analysis; aroma; brewing; fermentation; glycosides; grapes; hops; winemaking.

Publication types

Review

Grants and funding

N/A/American Vineyard Foundation