IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Development of analytical sampling technique to study the aroma profile of Pinot Noir wine

Development of analytical sampling technique to study the aroma profile of Pinot Noir wine

Abstract

A novel and efficient Dispersive Liquid-Liquid Microextraction (DLLME) method coupled with gas chromatography–mass spectrometry (GC–MS) was developed to determine 33 key aroma compounds (esters, alcohols, aldehydes, terpenes, norisoprenoids, fatty acids and phenols) present in Pinot noir (PN) wine. Four critical parameters including extraction solvent type, disperse solvent type, extraction solvent volume and disperse solvent volume were optimised with the aid of D-optimal design. Linearity of standard calibration curves created with the optimised method was satisfactory (with correlation coefficients over 0.9917), and repeatability and reproducibility were better than 10% for all targeted analytes. The limits of detection and the limits of quantification were at very low levels (µg L-1), covering the range of expected concentrations for targeted compounds in PN wine. Finally, the developed method was successfully applied to analyse 12 New Zealand PN wines. To our knowledge, this is the first time DLLME has been applied simultaneously to determine all the above aroma compounds present in PN wine. The developed DLLME method is a fast, straight-forward and low-cost method that is more environmentally-friendly than other common volatile extraction methods. 

DOI:

Publication date: June 24, 2022

Issue: IVAS 2022

Type: Poster

Authors

Katugampala Appuhamilage Dinesha Hansamali Perera1, Fedrizzi Bruno1, Pilkington Lisa Ivy1, Jelley Rebecca Eleanor1, Sherman Emma2 and Pinu Farhana R.2

1University of Auckland
2Plant and Food Research, New Zealand

Contact the author

Keywords

Wine, Dispersive liquid–liquid microextraction (DLLME), D-optimal design, Gas chromatography–mass spectrometry, aroma compounds

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

The generation of suspended cell wall material may limit the effect of ultrasound in some varieties

The disruptive effect exerted by high-power ultrasound (US) on plant cell walls, natural barriers to the diffusion of compounds of interest during the maceration of red wines, is established as the reason behind the chromatic improvement that its treatment causes. However, sometimes this improvement is not observed, especially with short maceration times. The presence of a high quantity of suspended cell wall material, which formation is favored by the sonication, could be the cause of this lack of positive results since this cell wall material has a high affinity for phenolic compounds.

Evaluation of intrinsic grape berry and cluster traits for postharvest withering kinetics prediction

To make some particular wine styles (e.g., Amarone), grapes are harvested and stored in dehydrating rooms before vinification, in a process called withering

Grape must quality and mesoclimatic variability in Fruška Gora wine-growing region, Serbia

The Fruška Gora mountain is a traditional wine-growing region in Serbia situated in the Pannonian Basin. Due to such a position, the vicinity of the Danube River and the presence of concave configuration, it is suitable for grape production. This paper provides analyses of spatial variations in meteorological parameters and grape juice quality within Fruška Gora wine region over three consecutive vintages (2018-2020). The examined period can be defined as warm with cool nights during September (AVG 18,9°C; GDD 1918°C; CI 12°CF) and with the presence of mesoclimatic variability. The East part of the study area was somewhat drier and hotter compared to other parts of the region. The analyses of grape must samples (190 in total) of five cultivars (Cabernet-Sauvignon, Merlot, Chardonnay, Sauvignon blanc and Grašac (Welschriesling)) commonly grown across the region (19 sites), were performed using Fourier Transform Infrared Technology (FTIR). Among all cultivars, Sauvignon blanc was harvested first in the East area (DOY=246±5, GDD at harvest=1552±74, 22.2±0.7 °Brix), while the latest harvest was recorded for Cabernet-Sauvignon in the West (DOY=283±5, GDD at harvest=1936±187, 23.4±1.0 °Brix ). Both the red and white cultivars had higher acidity and YAN in the grape must if the vines were grown in the North and East compared to South and West areas. According to PCA analysis, Grašac showed the lowest variation in grape must chemical composition. Thus, the results confirm that Grašac is the most stable cultivar in Fruška Gora. All monitored cultivars reached technological fruit ripeness by the end of the growing season. However, it was difficult to reach full ripeness of red cultivars, mostly beacuse of uncoupling of technolocical and phenolic ripeness. Thus, Cabernet-Sauvignon had higher variations in GDD sums at harvest compared to other cultivars, which probably increased variations in grape must quality.

The influence of native flora on Argentine white terroir cv. Torrontes Riojano

The main objective of this paper is to establish considerable differences between wines from three wine areas or terroir, made with cv Torrontes Riojano.

Interaction between commercial mannoproteins and phenolic compounds of two red wines from different Portuguese grape cultivars

The interaction between mannoproteins and wine phenolic compounds is a subject of great interest as some studies show the possible impact in color stability and an improvement in the sensory characteristics namely the reduction of red wine astringency.