scholarly journals Perception of mineral character in Sauvignon blanc wine: inter-individual differences

Wine Studies ◽  
2014 ◽  
Vol 3 (1) ◽  
Author(s):  
Wendy Veronica Parr ◽  
Jordi Ballester ◽  
Dominique Peyron ◽  
Claire Grose ◽  
Dominique Valentin

Of the descriptors employed to characterize wine organoleptically, minerality is arguably one of the most enigmatic. The aim of the work described in this article was to delineate the nature of perceived minerality in Sauvignon wine, specifically its sensorial reality for experienced wine professionals from France and New Zealand. Participants evaluated 16 Sauvignon blanc wines (8 French; 8 New Zealand) under three conditions, ortho-nasal olfaction, palate only (Nose-clip condition), and by full tasting (global perception). Data from the global condition only are reported here. Key results include: i) that although there were quantitative differences in perception of minerality as a function of culture, there was substantial agreement conceptually between French and New Zealand participants in terms of the sensorial experience of minerality; and ii) that perceived minerality associated significantly with other key wine descriptors, notably presence of citrus, stone-related characters (<em>e.g.</em>, flinty or chalky/calcareous notes), and reductive notes, along with absence of Sauvignon varietal characteristics (passion fruit; <em>green</em> notes). Of particular interest, no significant, direct association was found between perceived sourness/acidity and minerality judgments for either culture.

Author(s):  

Abstract A new distribution map is provided for Pseudomonas syringae pv. passiflorae (Reid) Young, Dye & Wilkie. Hosts: Passion fruit (Passiflora edulis). Information is given on the geographical distribution in Africa, South Africa, Natal, Australasia, Australia, Western Australia, New Zealand.


2021 ◽  
Author(s):  
◽  
Aidan Tabor

<p>New Zealand is a peculiar case because it has both high immigration (roughly 23% born abroad) and high emigration (24% of highly skilled New Zealanders live overseas). Within this context, the purpose of this research is to a) examine why some people selfselect to migrate internationally and others do not, b) explore how people make a decision to leave their country of origin, c) investigate how they select a destination, and d) consider how insights learned can contribute to Naturalistic Decision Making (NDM) theory of how decisions are made in the real world. In the first study, three of the largest immigrant source countries were selected for inclusion: United Kingdom/Ireland (with higher wages than New Zealand), South Africa (similar wages), and India (lower wages). Data were gathered through semi-structured interviews with 20 pre-departure and 26 post-arrival migrants to New Zealand. A thematic analysis was conducted separately for each country’s data, resulting in a total of 1564 coded extracts in 43 themes and subthemes. The findings support the view that the migration decision process contains three decisions: whether to go, where to go and when to go. Regarding the question of whether to go, Indian and British participants had very similar reasons for leaving their country of origin: lifestyle and work/life balance, opportunities for work and children, and environment. South Africans were overwhelmingly concerned with quality of life, particularly safety. New Zealand was selected as a destination of choice due to quality of life, climate, accessibility of nature, cultural similarity, career opportunities, visa process transparency and the perception that migrants were wanted. On the question of when to go, unlike much of the decision-making in the research literature, this decision process was a negotiation between partners that occurred over a long period of time, quite often years. The second study explored individual differences, such as personality characteristics, in the international mobility intentions of New Zealanders. In a sample of 205 adults born and currently living in New Zealand, 38.5% were planning to move abroad. Using logistical regression techniques, it was found that higher persistence, openness to experience, extraversion, and promotion focus all increased the chances that a participant was planning departure. Higher agreeableness and conscientiousness lowered the odds of a move. Gender moderated the relationship between sensation seeking and intention to migrate, with women’s decision being influenced to a greater extent than men’s by sensation seeking. Also, gender moderated the relationship between emotional stability and intention to migrate, as men who were lower in emotional stability were more likely to leave. The implications from this research include the following NDM-based assumptions: migration decision-making is a process driven by individual differences, occurs over time, has multiple decision-makers, exists within a social (family) context, has real consequences for the parties involved, is bound by cultural norms, takes place in a dynamically-changing environment (including immigration policy changes, life-stage, family health and resources changes), and is the expression of goals that may change during the process.</p>


2012 ◽  
Vol 65 ◽  
pp. 249-255
Author(s):  
V. Raw ◽  
D.C. Mundy ◽  
A.R.G McLachlan ◽  
C. Clifford ◽  
M. Walter

The New Zealand wine industry is strongly committed to sustainable production The SprayPro Rseries sprayer is designed to recycle unused chemical sprays not deposited on the target area Sauvignon blanc vines in Marlborough New Zealand were studied during 2011/2012 The vineyard area was 5 ha at 80 flowering where the full canopy was sprayed and 10 ha at pre bunch closure (PBC) targeting the fruiting zone only Disease control efficacy of spray recycling was investigated using Botrytis cinerea as the model pathogen Pathogen colonisation of necrotic leaf discs placed in the canopy at 80 flowering and PBC showed even control of B cinerea At PBC 80 of the watersensitive papers had adequate to excellent coverage Botrytis bunch rot incidence and severity were evenly expressed throughout the block but increased during preharvest; severity was well below the 3 economic threshold Recycling of botryticides did not affect disease control


2021 ◽  
Author(s):  
◽  
Winifred Jessie du Preez

<p>Due to the constant changes in workforce and generational composition, employee retention and recruitment has been a major problem. Currently there are three generations working side by side in the workforce namely; the Baby Boomer Generation, Generation X and Generation Y. This research has focused on the most effective ways in which to motivate, attract and retain employees, in particular Generation Y employees. This is important as an employee’s motivation and performance has an impact on the company’s success. Different generational members have different generational characteristics as well as individual differences and failure by mangers to understand the generational and individual differences can result in misunderstandings, miscommunication, conflict and performance issues. By providing managers with the necessary knowledge to understand employees, effective incentive and reward schemes can be designed and implemented. Using Vroom’s Expectancy Theory framework, this study examines Generation Y and X employees in New Zealand accounting and commerce industries in order to understand their preferences, feelings and opinions on the matter of motivation, employee retention and attraction, as well as their perceived generational characteristics. A focus group method was used in order to gather the necessary data. The results illustrate that the characteristics of Generation Y participants did not agree with most of the existing literature on what types of incentive schemes are most effective for these employees, while also pointing out that these employees are also driven by cultural and individual differences. As this study was industry and generational specific, it allowed the gathering of in-depth information, opinions and feelings that contributes to existing literature as well as being the first of its kind due to being executed in New Zealand.</p>


2021 ◽  
Author(s):  
◽  
Winifred Jessie du Preez

<p>Due to the constant changes in workforce and generational composition, employee retention and recruitment has been a major problem. Currently there are three generations working side by side in the workforce namely; the Baby Boomer Generation, Generation X and Generation Y. This research has focused on the most effective ways in which to motivate, attract and retain employees, in particular Generation Y employees. This is important as an employee’s motivation and performance has an impact on the company’s success. Different generational members have different generational characteristics as well as individual differences and failure by mangers to understand the generational and individual differences can result in misunderstandings, miscommunication, conflict and performance issues. By providing managers with the necessary knowledge to understand employees, effective incentive and reward schemes can be designed and implemented. Using Vroom’s Expectancy Theory framework, this study examines Generation Y and X employees in New Zealand accounting and commerce industries in order to understand their preferences, feelings and opinions on the matter of motivation, employee retention and attraction, as well as their perceived generational characteristics. A focus group method was used in order to gather the necessary data. The results illustrate that the characteristics of Generation Y participants did not agree with most of the existing literature on what types of incentive schemes are most effective for these employees, while also pointing out that these employees are also driven by cultural and individual differences. As this study was industry and generational specific, it allowed the gathering of in-depth information, opinions and feelings that contributes to existing literature as well as being the first of its kind due to being executed in New Zealand.</p>


2017 ◽  
Vol 70 ◽  
pp. 295-300 ◽  
Author(s):  
A. Shafi ◽  
H.J. Ridgway ◽  
M.V. Jaspers ◽  
E.E. Jones

Botryosphaeriaceae species are important pathogens of grapevines so the effect of environmental conditions on sporulation from naturally infected Sauvignon blanc grapevines in two Marlborough vineyards was studied. Shoot lesions characteristic of Botryosphaeriaceae infection were marked on 24 grapevines in each vineyard for observation between September 2014 and April 2015. Pycnidia on the lesions oozed conidia during or soon after rainfall on five occasions at maximum air temperatures of 8.4—19.9˚C and relative humidities of 77—94.7%. Microscopic observation of the ooze showed conidia characteristic of either Neofusicoccum or Diplodia species in 67% and 50% of samples from Vineyard A and B, respectively. Sixty- nine colonies characteristic of Botryosphaeriaeae species were recovered after plating of conidial ooze and identified by DNA analysis as Diplodia mutila (39.1%), Neofusicoccum australe (30.4%), N. parvum (14.5%), N. luteum (5.8%), D. seriata (7.2%) and N. ribis (3.0%). All species have been reported previously as grapevine pathogens in New Zealand.


2021 ◽  
Author(s):  
◽  
Danica Christine Carter

<p>New Zealand wine had an export value of $1.21 billion in 2013. Of the total 170million litres of wine exported thatyear, Sauvignon blanc madeup 84.5%. Sauvignon blanc wines have specific flavours and aromas that consumers detect and enjoy including grapefruit, passion fruit,and citrus characters that are due to the presence of sulfur containing thiols. Unfortunately, thiols are also responsible for aromas such as cat’s urine, grass, and gasoline, which taint the flavour of a wine. Careful analysis of these compounds could lead to wines tailored to specific palates and a reduction of taint aromas and flavours, therefore further increasing the market potential for New Zealand Sauvignon blanc. The aim of this project was to further develop an SPME-based technique for thiol analysis of wine that is more reproducible, more accessible, and less toxic than the current method that concentrates the thiols using organomercury columns. To do this, gold nanoparticles were synthesised and coated onto SPME fibres in an attempt to selectively extract thiols from wine samples. Initial results showed an inconsistency between analyses and led to the need for a more comprehensive analysis ofthe gold surface,the gold-sulfur bond, and its RED-OX chemistry. Techniques employed for analysis of the gold surface included scanning electron microscopy, transmission electron microscopy,zeta-sizing and UV-VisSpectrophotometry. To examine the interactions between gold and sulfur, Surface-Enhanced Raman Spectroscopy and computational chemistry were used. The RED-OX chemistry was initially assessed in terms of the carrier gas in the gas chromatographs but was later changed to reductive and oxidative dips. It was found that an H2O2 dip in between samples oxidised the bound thiolates to a series of dimers that were easier to remove from the gold. While not yet completely resolving the hysteresis observed in previous attempts, this method of cleaning the fibres will lead to future experimentation and development in this area.</p>


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