User profiles for Anna Hjelmeland

Anna K. Hjelmeland

Demetrix
Verified email at demetrixbio.com
Cited by 609

Glycosidically bound volatile aroma compounds in grapes and wine: a review

AK Hjelmeland, SE Ebeler - American Journal of Enology …, 2015 - Am Soc Enol Viticulture
Volatile aroma compounds in plants are typically found both as “free” and “bound” to a sugar
moiety. When bound, these compounds are not odor active; however, upon hydrolysis of …

Regional sensory and chemical characteristics of Malbec wines from Mendoza and California

ES King, M Stoumen, F Buscema, AK Hjelmeland… - Food chemistry, 2014 - Elsevier
Malbec grapes are widely grown and studied in Argentina, whereas the smaller production
in California is less well known. This study sought to define and compare Malbec wine …

Characterizing the chemical and sensory profiles of United States Cabernet Sauvignon wines and blends

AK Hjelmeland, ES King, SE Ebeler… - American Journal of …, 2013 - Am Soc Enol Viticulture
Cabernet Sauvignon is one of the most reputable red grape varieties grown in the United
States; however, limited information is available on the chemical and sensory composition of …

Vineyard site impact on the elemental composition of Pinot noir wines

C Grainger, A Yeh, S Byer, A Hjelmeland, MMM Lima… - Food Chemistry, 2021 - Elsevier
Elemental composition was used to characterize and differentiate 14 wines made from the
identical clone of Vitis vinifera cv. Pinot noir (clone 667). The vineyards span distances which …

Changes in glycosylation patterns of monoterpenes during grape berry maturation in six cultivars of Vitis vinifera

J Godshaw, AK Hjelmeland, J Zweigenbaum… - Food chemistry, 2019 - Elsevier
Plants conjugate monoterpenoids to sugars, rendering them non-volatile. Hydrolysis of
these glycosidic precursors frees the volatile aroma compounds. Here, we profile intact …

Profiling monoterpenol glycoconjugation in Vitis vinifera L. cv. Muscat of Alexandria using a novel putative compound database approach, high resolution mass …

AK Hjelmeland, J Zweigenbaum, SE Ebeler - Analytica chimica acta, 2015 - Elsevier
In this work we present a novel approach for the identification of plant metabolites using
ultrahigh performance liquid chromatography coupled to accurate mass time-of-flight mass …

Impact of mechanical harvesting and optical berry sorting on grape and wine composition

…, LA Lerno, AK Hjelmeland… - … Journal of Enology …, 2016 - Am Soc Enol Viticulture
The impact of mechanical harvesting, optical berry sorting, and their possible synergistic
effect on grape and wine composition was investigated. Pinot noir grapes from the Russian …

A comparison of sorptive extraction techniques coupled to a new quantitative, sensitive, high throughput GC–MS/MS method for methoxypyrazine analysis in wine

AK Hjelmeland, PL Wylie, SE Ebeler - Talanta, 2016 - Elsevier
Methoxypyrazines are volatile compounds found in plants, microbes, and insects that have
potent vegetal and earthy aromas. With sensory detection thresholds in the low ng L −1 range…

Investigating the impact of regionality on the sensorial and chemical aging characteristics of Pinot noir grown throughout the US West coast

…, M Sokolowsky, A Yeh, P Lestringant, A Hjelmeland… - Food Chemistry, 2021 - Elsevier
The sensorial and chemical differences among Pinot noir wines from different vineyard
locations were investigated. Grapes of a single Pinot noir clone were grown on twelve different …

Extended maceration and cap management impacts on the phenolic, volatile, and sensory profiles of Merlot wine

…, JW Blackman, AK Hjelmeland… - … Journal of Enology …, 2018 - Am Soc Enol Viticulture
The present study aimed to evaluate the sensory and chemical effects of nine cap management
and maceration techniques. Extended maceration (EM) was applied to Vitis vinifera L. cv…