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- Author:
- Barril, C.; Rutledge, D.N.; Scollary, G.R.; Clark, A.C.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 169-181
- ISSN:
- 1322-7130
- Subject:
- antioxidant activity; antioxidants; ascorbic acid; oxygen; shelf life; spoilage; sulfur dioxide; white wines; winemaking
- Abstract:
- ... We review the use of ascorbic acid in winemaking and the benefits as well as the detrimental outcomes associated with its use. Initial discussion focuses on the antioxidant activity of ascorbic acid. The impact of the wine matrix and wine production practices, especially storage in bottle and oxygen ingress, on its antioxidant efficiency is discussed. The complementary roles of the antioxidant pai ...
- DOI:
- 10.1111/ajgw.12207
-
http://dx.doi.org/10.1111/ajgw.12207
- Author:
- Degaris, K.A.; Walker, R.R.; Loveys, B.R.; Tyerman, S.D.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 296-306
- ISSN:
- 1322-7130
- Subject:
- Vitis; calcium; chlorides; deficit irrigation; fruit composition; growing season; ions; irrigation water; leaf water potential; leaves; microirrigation; monitoring; plant growth; potassium; root zone drying; saline water; sodium; stomatal conductance; vigor; vines; water use efficiency
- Abstract:
- ... BACKGROUND AND AIMS: Deficit irrigation techniques have been used to improve water use efficiency and control vigour in grapevines, but the consequences of using saline water with these techniques have been little investigated. Here, we investigate the effect of deficit irrigation with moderately saline water on within‐vine ion allocation. METHODS AND RESULTS: Drip‐irrigated own‐rooted Shiraz and ...
- DOI:
- 10.1111/ajgw.12220
-
http://dx.doi.org/10.1111/ajgw.12220
- Author:
- Tempere, S.; Hamtat, M.‐L.; de Revel, G.; Sicard, G.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 190-196
- ISSN:
- 1322-7130
- Subject:
- cognition; experts; memory; odor compounds; odors; professionals; wines
- Abstract:
- ... BACKGROUND AND AIMS: The ability to identify odours is important in wine tasting. Contradictory results have emerged from studies comparing the olfactory identification ability of experts and novices. The aim of this study is to extend the characterisation of olfactory capacity of wine professionals and to discuss the effect of practice and training on odour identification. METHODS AND RESULTS: We ...
- DOI:
- 10.1111/ajgw.12192
-
http://dx.doi.org/10.1111/ajgw.12192
- Author:
- Delbac, L.; Thiéry, D.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 256-261
- ISSN:
- 1322-7130
- Subject:
- Lobesia botrana; Vitis; flowers; grapes; instars; integrated pest management; larvae; monitoring; moths; pests; plant damage; small fruits; vineyards; France
- Abstract:
- ... BACKGROUND AND AIMS: Evaluation of pest damage and the population age of the pest are key factors in integrated pest management. Gaining such knowledge, however, can be time consuming and difficult in larvae that have cryptic habits, such as the European grapevine moth (EGVM, Lobesia botrana). An alternative is to measure the damage caused by different larval instars. Damage caused by different EG ...
- DOI:
- 10.1111/ajgw.12204
-
http://dx.doi.org/10.1111/ajgw.12204
- Author:
- Olego, M.A.; Álvarez, J.C.; Tobes, A.; de Paz, J.M.; Coque, J.J.R.; Garzón‐Jimeno, E.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 232-239
- ISSN:
- 1322-7130
- Subject:
- Vitis vinifera; cultivars; grapes; harvest date; high performance liquid chromatography; malic acid; models; pH; prediction; rain; regression analysis; small fruits; titratable acidity
- Abstract:
- ... BACKGROUND AND AIMS: Malic acid concentration varies as berries develop, reaching its highest value just before veraison. Objective criteria for choosing the optimal harvest time require chemical or physicochemical measurements; the determination of malic acid concentration is one of these. The main aim of this work was to develop a predictive model to determine the malic acid concentration in gra ...
- DOI:
- 10.1111/ajgw.12181
-
http://dx.doi.org/10.1111/ajgw.12181
- Author:
- Aleixandre‐Tudo, J.L.; Lizama, V.; Álvarez, I.; Nieuwoudt, H.; García, M.J.; Aleixandre, J.L.; du Toit, W.J.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 205-214
- ISSN:
- 1322-7130
- Subject:
- acetaldehyde; analysis of variance; anthocyanins; astringency; chemical composition; color; discriminant analysis; oxidation; oxygen; phenols; principal component analysis; red wines; volatile compounds; volatile fatty acids
- Abstract:
- ... BACKGROUND AND AIMS: The introduction of controlled amounts of oxygen into red wines influences the composition of the phenolic substances and volatiles, and therefore the sensory properties of the wines. The main aim of this study was to evaluate the impact of a simulation of the micro‐oxygenation technique through acetaldehyde addition, on colour, and on the composition of phenolic substances an ...
- DOI:
- 10.1111/ajgw.12203
-
http://dx.doi.org/10.1111/ajgw.12203
- Author:
- Ciliberti, N.; Fermaud, M.; Roudet, J.; Languasco, L.; Rossi, V.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 262-270
- ISSN:
- 1322-7130
- Subject:
- Botrytis cinerea; conidia; environmental factors; equations; fruit juices; genotype; grapes; growing media; heat sums; latent period; maturity stage; models; prediction; provenance; relative humidity; small fruits; sporulation; temperature; water activity
- Abstract:
- ... BACKGROUND AND AIMS: The presence of viable sources and of conditions favourable for conidial production, dispersal and deposition is essential for a high number of Botrytis cinerea conidia to be available at host infection sites. This study investigated the effect of environmental conditions, growing media and grape organs on the sporulation of ten strains of different genotypes and geographical ...
- DOI:
- 10.1111/ajgw.12217
-
http://dx.doi.org/10.1111/ajgw.12217
- Author:
- Lou, Y.; Miao, Y.; Wang, Z.; Wang, L.; Li, J.; Zhang, C.; Xu, W.; Inoue, M.; Wang, S.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 316-323
- ISSN:
- 1322-7130
- Subject:
- Vitis; developmental stages; diurnal variation; irrigation rates; irrigation scheduling; isotope labeling; models; peas; photogrammetry; photosynthesis; researchers; soil water; soil water potential; stable isotopes; time series analysis; viticulture; water conservation
- Abstract:
- ... BACKGROUND AND AIMS: Irrigation is an important management practice in viticulture. Irrigation scheduling established by previous researchers was based mainly on the irrigation level for optimal berry composition and size at harvest. Because eventual berry size and composition depend on the accumulation of daily growth, a more precise study must be implemented to establish the soil water potential ...
- DOI:
- 10.1111/ajgw.12208
-
http://dx.doi.org/10.1111/ajgw.12208
- Author:
- Hoffmann, M.; Ruehl, E.H.; Eisenbeis, G.; Huber, L.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 271-278
- ISSN:
- 1322-7130
- Subject:
- Daktulosphaira vitifoliae; Vitis cinerea var. helleri; grapes; habitats; larvae; overwintering; pests; phenotype; pigmentation; population dynamics; reproduction; root galls; roots; rootstocks; soil sampling; temperate zones; viticulture
- Abstract:
- ... BACKGROUND AND AIMS: Daktulosphaira vitifoliae Fitch (grape phylloxera, Phylloxeridae) is one of the most devastating pests in viticulture, mainly because of their root feeding activity. Up to today fundamental relations between belowground habitat and population dynamics remain unclear. In this 2‐year study, we investigated the relations between grape phylloxera population and phenotypic traits o ...
- DOI:
- 10.1111/ajgw.12219
-
http://dx.doi.org/10.1111/ajgw.12219
- Author:
- Nesbitt, A.; Kemp, B.; Steele, C.; Lovett, A.; Dorling, S.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 324-335
- ISSN:
- 1322-7130
- Subject:
- climate; climate change; growing season; meteorological data; models; qualitative analysis; quantitative analysis; sparkling wines; steers; temperature; viability; vines; vineyards; viticulture; wine cultivars; United Kingdom
- Abstract:
- ... BACKGROUND AND AIMS: From 2004 to 2013, the vineyard area in the United Kingdom (UK) increased 148%. Observed climate change and underlying weather variability were assessed for their influence on the development and viability of UK viticulture. METHODS AND RESULTS: The perspectives of grapegrowers in the UK on climate change and weather variability were complemented by a quantitative analysis of ...
- DOI:
- 10.1111/ajgw.12215
-
http://dx.doi.org/10.1111/ajgw.12215
- Author:
- Friedel, M.; Sorrentino, V.; Blank, M.; Schüttler, A.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 215-225
- ISSN:
- 1322-7130
- Subject:
- Vitis vinifera; chemical composition; color; fermentation; glycosylation; malic acid; monoterpenoids; nitrogen; norisoprenoids; odor compounds; odors; pH; phenolic compounds; small fruits; titratable acidity; vines; vineyards; wine quality; winemaking; wines
- Abstract:
- ... BACKGROUND AND AIMS: To successfully use berry sorting in winemaking, it is crucial to understand the interaction of physical and chemical composition of berries. The aim of this study was to investigate the relationship between berry diameter and colour and aspects of wine composition, such as titratable acidity, aroma compounds and phenolic substances of Vitis vinifera L. cv. Riesling. METHODS A ...
- DOI:
- 10.1111/ajgw.12210
-
http://dx.doi.org/10.1111/ajgw.12210
- Author:
- Gatti, M.; Galbignani, M.; Garavani, A.; Bernizzoni, F.; Tombesi, S.; Palliotti, A.; Poni, S.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 245-255
- ISSN:
- 1322-7130
- Subject:
- Vitis vinifera; alcohols; anthocyanins; antitranspirants; brix; color; emulsions; flavor; gas exchange; global warming; ripening; sugars; vines; wines; yield components
- Abstract:
- ... BACKGROUND AND AIMS: Accelerated berry sugar accumulation resulting in wines of excessive alcohol concentration, sub‐optimal colour and atypical flavour has become increasingly frequent in warm growing districts, a trend induced by factors that include global warming. The application of a film‐forming antitranspirant may be an effective way of reducing early sugar accumulation without affecting co ...
- DOI:
- 10.1111/ajgw.12212
-
http://dx.doi.org/10.1111/ajgw.12212
- Author:
- Mutawila, C.; Halleen, F.; Mostert, L.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 279-287
- ISSN:
- 1322-7130
- Subject:
- Trichoderma; Vitis; application timing; biological control agents; cultivars; decline; dormancy; pathogens; physiological state; pruning; vines; weather; winter
- Abstract:
- ... BACKGROUND AND AIMS: The application of Trichoderma species on grapevine pruning wound surfaces reduces wound infection from trunk pathogens that cause grapevine decline. The aim of this study was to determine the efficacy of pruning wound treatments containing Trichoderma as influenced by the time of pruning and time of application following pruning. METHODS AND RESULTS: Cultivars Chenin Blanc an ...
- DOI:
- 10.1111/ajgw.12218
-
http://dx.doi.org/10.1111/ajgw.12218
- Author:
- McIntyre, E.; Ovington, L.A.; Saliba, A.J.; Moran, C.C.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 182-189
- ISSN:
- 1322-7130
- Subject:
- adults; alcohols; focus groups; marketing strategies; people; purchasing; social behavior; taste; wine industry; wines
- Abstract:
- ... BACKGROUND AND AIMS: This study aimed to investigate the similarities and differences in the reasons why alcohol consumers choose to avoid purchasing or consuming wine across five countries, and to investigate similarities and differences across three generations. METHODS AND RESULTS: Adults who consumed alcohol regularly, in healthy quantities, but rarely or never consumed wine were recruited fro ...
- DOI:
- 10.1111/ajgw.12182
-
http://dx.doi.org/10.1111/ajgw.12182
- Author:
- Lichter, A.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 161-168
- ISSN:
- 1322-7130
- Subject:
- antagonists; control methods; ethylene; freshness; packaging; plant growth; sulfur dioxide; table grapes; wastes
- Abstract:
- ... Rachis browning is considered the second most important postharvest problem of tablegrapes. The primary problem, control of decay, was extensively studied in recent years, often with minor attention to rachis browning. To the consumer, a green rachis is an indication of freshness, and hence, a brown rachis can be a major cause of consumer rejection and eventually fruit waste. The significant advan ...
- DOI:
- 10.1111/ajgw.12205
-
http://dx.doi.org/10.1111/ajgw.12205
- Author:
- Coetzee, C.; Brand, J.; Jacobson, D.; Du Toit, W.J.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 197-204
- ISSN:
- 1322-7130
- Subject:
- acetaldehyde; apples; odors; oxidation; sensory evaluation; sweet peppers; white wines; winemaking
- Abstract:
- ... BACKGROUND AND AIMS: Wine aroma is influenced by complex interactions between various wine constituents. This study investigated the sensory interactive effects of Sauvignon Blanc impact compounds, 3‐mercaptohexan‐1‐ol and 3‐isobutyl‐2‐methoxypyrazine, with acetaldehyde that typically forms during the oxidation of wine. METHODS AND RESULTS: Spiked model wines were subjected to sensory descriptive ...
- DOI:
- 10.1111/ajgw.12206
-
http://dx.doi.org/10.1111/ajgw.12206
- Author:
- Wei, Y.‐J.; Zhao, S.‐R.; Li, J.‐M.; Xue, B.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 226-231
- ISSN:
- 1322-7130
- Subject:
- Vitis vinifera; antioxidant activity; electron paramagnetic resonance spectroscopy; grapes; health promotion; hydroxyl radicals; leaves; models; nitric oxide; roots; seeds; stems; stilbenes; tissues; viniferins
- Abstract:
- ... BACKGROUND AND AIMS: Stilbenes are an important group of phenolic substances that exist in roots, stems, leaves, skins and seeds. But little work has been performed to characterise the composition of grape root or to measure the antioxidant capacity of several stilbenes with hydroxyl radicals,1,1‐diphenyl‐2‐picrylhydrazyl and nitric oxide free radicals. METHODS AND RESULTS: Stilbenes were analysed ...
- DOI:
- 10.1111/ajgw.12230
-
http://dx.doi.org/10.1111/ajgw.12230
- Author:
- Dean, R.J.; Bobek, G.; Stait‐Gardner, T.; Clarke, S.J.; Rogiers, S.Y.; Price, W.S.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 240-244
- ISSN:
- 1322-7130
- Subject:
- cell death; diffusivity; grapes; image analysis; imbibition; magnetic resonance imaging; oxygen; pathogens; pericarp; small fruits; spectrometers; surface water; viticulture
- Abstract:
- ... BACKGROUND AND AIMS: Fruit split is a well‐known source of fruit loss in viticulture. Previous investigations on this topic have focused on determining the factors that influence the occurrence of fruit split. The purpose of this study was to examine and characterise the immediate effect of fruit split on grape tissue structure using diffusion magnetic resonance imaging (MRI). METHODS AND RESULTS: ...
- DOI:
- 10.1111/ajgw.12184
-
http://dx.doi.org/10.1111/ajgw.12184
- Author:
- Bruez, E.; Baumgartner, K.; Bastien, S.; Travadon, R.; Guérin‐Dubrana, L.; Rey, P.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 288-295
- ISSN:
- 1322-7130
- Subject:
- Eutypa; Trichoderma; Vitis; cultivars; dieback; fungal communities; fungal diseases of plants; hybrids; internal transcribed spacers; mycoparasites; plant pathogenic fungi; planting; saprophytes; single-stranded conformational polymorphism; tissues; vines; vineyards; wood; France
- Abstract:
- ... BACKGROUND AND AIMS: The objective of this study was to analyse the various fungal communities that colonise functional wood tissues of old vines that did not express symptoms of grapevine trunk diseases (i.e. Esca and Eutypa dieback) in the year of sampling. Plants of the cultivar Baco Blanc a grapevine hybrid of Folle Blanche and Noah used to produce Armagnac in France were sampled. METHODS AND ...
- DOI:
- 10.1111/ajgw.12209
-
http://dx.doi.org/10.1111/ajgw.12209
- Author:
- Bellvert, J.; Zarco‐Tejada, P.J.; Marsal, J.; Girona, J.; González‐Dugo, V.; Fereres, E.
- Source:
- Australian journal of grape and wine research 2016 v.22 no.2 pp. 307-315
- ISSN:
- 1322-7130
- Subject:
- adverse effects; aircraft; canopy; deficit irrigation; irrigation scheduling; leaf water potential; monitoring; rain; remote sensing; vapor pressure; vegetation; vines; vineyards; wines
- Abstract:
- ... BACKGROUND AND AIMS: Mapping the spatial variability of vine water status within a vineyard is necessary for the efficient management of irrigation water. The objective of this study was to determine whether estimates of remotely sensed leaf water potential (Ψᵣₑₘ) could be employed as a precise tool for scheduling irrigation at the irrigation sector level throughout the season. METHODS AND RESULTS ...
- DOI:
- 10.1111/ajgw.12173
-
http://dx.doi.org/10.1111/ajgw.12173