Terroir 2020 banner
IVES 9 IVES Conference Series 9 Sensory profiles of Shiraz wine from six Barossa sub-regions: a comparison between industry scale and standardised small lot research wine making

Sensory profiles of Shiraz wine from six Barossa sub-regions: a comparison between industry scale and standardised small lot research wine making

Abstract

Aims: The Barossa wine region in South Australia comprises six sub-regions and is renowned for its Shiraz wines. However, there is no comprehensive documentation of the distinctive sensory characteristics of wines from these sub-regions.

Methods and Results: Shiraz wines from the six Barossa sub-regions (Central Grounds, Eastern Edge, Northern Grounds, Southern Grounds, Western Ridge and Eden Valley) were evaluated blind and in duplicate using descriptive sensory analysis by a highly trained panel of 12 experienced tasters. Evaluated wines were made with either standardised small lot winemaking (40L ferments, 2018 n= 69, 2019 n=72) or commercially produced (2018 n=44, 2019 n=76). Wine samples for sensory analysis were collected directly after completing malolactic fermentation and before maturation in oak or blending. Each vintage, the two sample sets were evaluated consecutively by the same panel, small lot wines followed directly by the commercially produced samples.

Results of the canonical variate analysis showed that wines from Eden Valley were consistently characterised as being more savoury (meaty, broth) compared to the other five sub-regions, for both vintages and production methods. Unlike their industry scale counterparts, research wines from the Western Ridge sub-region were characterised as more tannic (astringent, rough) for both vintages. Less consistent separation was observed for the other four sub-regions, with wines generally being described as fruit forward, with intense dark and red fruit.

Conclusions: 

Sensory profiles of Shiraz wines from the six Barossa sub-regions revealed a small number of consistent sub-regional characteristics for both standardised and industry scale wine samples across the two vintages.

Significance and Impact of the Study: Detailed sensory profiles for research and industry scale wine can provide valuable information for producers to best showcase wine sub-regional characteristics for marketing/promotional purposes. Next, sensory profile findings will be analysed along with soil, climate, berry and wine composition data as well as information on viticultural practices in an attempt to explain sub-regional differences and identify drivers of regionality.

DOI:

Publication date: March 17, 2021

Issue: Terroir 2020

Type: Video

Keywords

Sensory profiling, typicity, descriptive analysis, regionality, red wine

Tags

IVES Conference Series | Terroir 2020

Citation

Related articles…

Linking soil C cycling and microbial diversity under regenerative management in Northern California (USA) vineyards

Regenerative agriculture (RA) practices aim to minimize soil disturbance, keep soil covered, maintain living roots underground, and integrate livestock to improve soil health and sustainability.

Mining belowground and aboveground microbiome data to identify microbial biomarkers of grapevine health and yield

Vineyards are home to a wide diversity of microorganisms that interact with plants and with each other.

Prosensorial potential of new fungi-resistant varieties in modern oenology

The introduction into the Italian wine supply chain of the latest generation of fungi-resistant grapevine varieties, endowed with a greater or lesser strong resistance to downy and powdery mildews, represents a valid tool of making viticulture more sustainable, particularly in northern regions of the peninsula, where climatic conditions accentuate the pressure of fungal diseases. However, the affirmation of resistant varieties is a function of their agronomic value, as well as of their oenological and sensorial value. The purpose of this study was to evaluate in detail the sensory potential of the new resistant varieties, in order to understand their real possibility of inclusion in the modern global enological context.

The role of terroir in tourism led amenity migration: contrasting effects in Tuscany and the Okanagan valley of British Columbia

Definitions of terroir elude consistent agreement. As defined geographical space the common denominators of its conceptualization include natural and cultural elements of life

A blueprint for managing vine physiological balance at different spatial and temporal scales in Champagne

In Champagne, the vine adaptation to different climatic and technical changes during these last 20 years can be seen through physiological balance disruptions. These disruptions emphasize the general grapevine decline. Since the 2000s, among other nitrogen stress indicators, the must nitrogen has been decreasing. The combination of restricted mineral fertilizers and herbicide use, the growing variability of spring rainfall, the increasing thermal stress as well as the soil type heterogeneity are only a few underlying factors that trigger loss of physiological balance in the vineyards. It is important to weigh and quantify the impact of these factors on the vine. In order to do so, the Comité Champagne uses two key-tools: networking and modelization. The use of quantitative and harmonized ecophysiological indicators is necessary, especially in large spatial scales such as the Champagne appellation. A working group with different professional structures of Champagne has been launched by the Comité Champagne in order to create a common ecophysiology protocol and thus monitor the vine physiology, yearly, around 100 plots, with various cultural practices and types of soil. The use of crop modelling to follow the vine physiological balance within different pedoclimatic conditions enables to understand the present balance but also predict the possible disruptions to come in future climatic scenarios. The physiological references created each year through the working group, benefit the calibration of the STICS model used in Champagne. In return, the model delivers ecophysiology indicators, on a daily scale and can be used on very different types of soils. This study will present the bottom-up method used to give accurate information on the impacts of soil, climate and cultural practices on vine physiology.