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Techniek in en rond de wijn, oxidation
Gepost door JohnCopier
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Grant funds high-tech system to improve grapevine pruning 27 February 2020 18:09 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Grant funds high-tech system to improve grapevine pruning
Researchers from Cornell and Pennsylvania State University are developing a high-tech, portable imaging system that will increase profits and yields by making winter grapevine pruning more efficient.
[news.cornell.edu]
John
Life is always better when I wine.
Koken is meer dan een recept.
Researchers from Cornell and Pennsylvania State University are developing a high-tech, portable imaging system that will increase profits and yields by making winter grapevine pruning more efficient.
[news.cornell.edu]
John
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Test-Tube Tasting? Bev Tech Company Unveils Grape-less 'Molecular Wine' 27 February 2020 18:11 |
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Test-Tube Tasting? Bev Tech Company Unveils Grape-less 'Molecular Wine'
Can wine be made in a lab without one very key ingredient and still taste like the real thing?
[www.winespectator.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Can wine be made in a lab without one very key ingredient and still taste like the real thing?
[www.winespectator.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Yeast; The Silent Winemaker 09 March 2020 18:13 |
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Yeast; The Silent Winemaker
Imagine a mid-day snack, some cheeses, marmite on fresh bread toast, maybe a croissant and a glass of wine or cold beer. None would be possible without yeast.
[news.wine.co.za]
John
Life is always better when I wine.
Koken is meer dan een recept.
Imagine a mid-day snack, some cheeses, marmite on fresh bread toast, maybe a croissant and a glass of wine or cold beer. None would be possible without yeast.
[news.wine.co.za]
John
Life is always better when I wine.
Koken is meer dan een recept.
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Sulfur, sulfites and sulfides: a primer 09 March 2020 18:15 |
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Sulfur, sulfites and sulfides: a primer
Pictured above: Vancouver harbour has a famous sulfur pile. It’s stored here after arriving as a by product of oil extraction in Alberta, and is then loaded onto ships and sent to its various destinations.
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Pictured above: Vancouver harbour has a famous sulfur pile. It’s stored here after arriving as a by product of oil extraction in Alberta, and is then loaded onto ships and sent to its various destinations.
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
First conclusive results on agrivoltaics in France 10 March 2020 18:14 |
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First conclusive results on agrivoltaics in France
Vines thrive under the shade afforded by photovoltaic panels according to preliminary results thrown up by the pilot site in Piolenc, Vaucluse, in the Rhone Valley. Out of 1,000 m2 of vines planted to Grenache noir, 600 m2 were covered with solar panels developed by Sun'Agri.
[www.vitisphere.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Vines thrive under the shade afforded by photovoltaic panels according to preliminary results thrown up by the pilot site in Piolenc, Vaucluse, in the Rhone Valley. Out of 1,000 m2 of vines planted to Grenache noir, 600 m2 were covered with solar panels developed by Sun'Agri.
[www.vitisphere.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
The Chemistry of Canned Wines 10 March 2020 18:18 |
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The Chemistry of Canned Wines
Wine in cans is an increasingly popular alternative packaging option but some producers report occasional issues with shelf stability and quality degradation.
[grapesandwine.cals.cornell.edu]
John
Life is always better when I wine.
Koken is meer dan een recept.
Wine in cans is an increasingly popular alternative packaging option but some producers report occasional issues with shelf stability and quality degradation.
[grapesandwine.cals.cornell.edu]
John
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New smart bottle caps will detect counterfeit wine by giving bottles a ‘digital birth certificate’ 13 March 2020 13:24 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
New smart bottle caps will detect counterfeit wine by giving bottles a ‘digital birth certificate’
An Australian tech startup is pitching wineries on a new smart bottle cap it says could help identify counterfeit wines.
[en.brinkwire.com]
John
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An Australian tech startup is pitching wineries on a new smart bottle cap it says could help identify counterfeit wines.
[en.brinkwire.com]
John
Life is always better when I wine.
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Undercompressive shocks proposed to explain 'tears of wine' phenomenon 13 March 2020 13:31 |
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Undercompressive shocks proposed to explain 'tears of wine' phenomenon
New research explores the fluid dynamics behind a phenomenon known as tears...
[phys.org]
John
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Koken is meer dan een recept.
New research explores the fluid dynamics behind a phenomenon known as tears...
[phys.org]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
‘Tressage’: an alternative to hedging vines, that claims to have some benefits 14 April 2020 17:18 |
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‘Tressage’: an alternative to hedging vines, that claims to have some benefits
In viticulture, a widely practiced form of leaf removal is hedging of the canopies, taking off the developing shoots at the top, as well as any extra growth sticking out into the row. The goal here is twofold: to tidy up the vineyard by removing unwanted growth, and also to slow down the vegetative phase of growth and get the vine to focus on fruit ripening.
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
In viticulture, a widely practiced form of leaf removal is hedging of the canopies, taking off the developing shoots at the top, as well as any extra growth sticking out into the row. The goal here is twofold: to tidy up the vineyard by removing unwanted growth, and also to slow down the vegetative phase of growth and get the vine to focus on fruit ripening.
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
So You Think You Know Malo? 14 April 2020 17:10 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
So You Think You Know Malo?
Examining misconceptions and lesser-known facts about malolactic fermentation in wine
[daily.sevenfifty.com]
John
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Koken is meer dan een recept.
Examining misconceptions and lesser-known facts about malolactic fermentation in wine
[daily.sevenfifty.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
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Brettanomyces spp. control: a research-winery crosstalk. 27 April 2020 17:42 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Brettanomyces spp. control: a research-winery crosstalk.
The Brettanomyces spp. contamination during winemaking and its persistence in the cellar have a detrimental effect on the high-quality wines and produce economic losses worldwide. The Brettanomyces spp. wine spoilage is largely due to the volatile phenols (VPs) production with a depreciation of the wine bottles.
[www.ciencia-e-vinho.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
The Brettanomyces spp. contamination during winemaking and its persistence in the cellar have a detrimental effect on the high-quality wines and produce economic losses worldwide. The Brettanomyces spp. wine spoilage is largely due to the volatile phenols (VPs) production with a depreciation of the wine bottles.
[www.ciencia-e-vinho.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Nitrogen in viticulture and winemaking: an exploration from vine to bottle 28 April 2020 17:12 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Nitrogen in viticulture and winemaking: an exploration from vine to bottle
Besides that which is essential for photosynthesis, namely carbon dioxide, water, and sunlight, grapevines also require a range of nutrients in order to grow, survive and prosper. These nutrients are split into two groups depending on scale of requirement, macro and micronutrient, the former being those required in larger amounts. Nitrogen is the most abundant soil‐derived macronutrient in the grapevine. It plays a major role in all processes and a significant amount of nitrogen is essential for normal vine growth. In viticulture a nitrogen deficiency may affect key metabolic functions and retard shoot development and bunch formation. In winemaking a shortage of yeast assimilable nitrogen can result in problematic fermentations. In this article I will explore nitrogen in viticulture from soil to bottle.
[wordonthegrapevine.co.uk]
John
Life is always better when I wine.
Koken is meer dan een recept.
Besides that which is essential for photosynthesis, namely carbon dioxide, water, and sunlight, grapevines also require a range of nutrients in order to grow, survive and prosper. These nutrients are split into two groups depending on scale of requirement, macro and micronutrient, the former being those required in larger amounts. Nitrogen is the most abundant soil‐derived macronutrient in the grapevine. It plays a major role in all processes and a significant amount of nitrogen is essential for normal vine growth. In viticulture a nitrogen deficiency may affect key metabolic functions and retard shoot development and bunch formation. In winemaking a shortage of yeast assimilable nitrogen can result in problematic fermentations. In this article I will explore nitrogen in viticulture from soil to bottle.
[wordonthegrapevine.co.uk]
John
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What is a Beautiful Wine (2) 29 April 2020 11:43 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
What is a Beautiful Wine (2)
This post continues my series on whether the millennia-long debate over the nature of beauty can give us important insights into wine quality. (Part 1 is here)
[foodandwineaesthetics.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
This post continues my series on whether the millennia-long debate over the nature of beauty can give us important insights into wine quality. (Part 1 is here)
[foodandwineaesthetics.com]
John
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Koken is meer dan een recept.
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A wine bottle that’s flat out different 29 April 2020 16:57 |
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A wine bottle that’s flat out different
Jason Sych puts the flat wine bottle through its paces, to see if it does what its creator promises it can do.
[www.wine-business-international.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Jason Sych puts the flat wine bottle through its paces, to see if it does what its creator promises it can do.
[www.wine-business-international.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Infographic: the chemistry of Sauvignon Blanc 01 May 2020 17:24 |
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Infographic: the chemistry of Sauvignon Blanc
It’s Sauvignon Blanc day! Here’s a nice infographic from the Bragato Research Institute on the chemistry of Sauvignon Blanc:
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
It’s Sauvignon Blanc day! Here’s a nice infographic from the Bragato Research Institute on the chemistry of Sauvignon Blanc:
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Mats Made From Nanofibers Linked To A Red Wine Chemical Could Help Prevent Oxidation 07 May 2020 17:38 |
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Mats Made From Nanofibers Linked To A Red Wine Chemical Could Help Prevent Oxidation
Texas A&M engineering researchers have created mesh-like mats made with tannic acid. Used in bandages or inside food storage containers, they can help promote prolonged antioxidant activity.
[today.tamu.edu]
John
Life is always better when I wine.
Koken is meer dan een recept.
Texas A&M engineering researchers have created mesh-like mats made with tannic acid. Used in bandages or inside food storage containers, they can help promote prolonged antioxidant activity.
[today.tamu.edu]
John
Life is always better when I wine.
Koken is meer dan een recept.
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Scientists find genetic link to alcohol misuse 28 May 2020 17:15 |
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Scientists find genetic link to alcohol misus
Researchers from the Yale School of Medicine have identified 29 genetic variants that are found in people with a problematic relationship with alcohol.
[www.thespiritsbusiness.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Researchers from the Yale School of Medicine have identified 29 genetic variants that are found in people with a problematic relationship with alcohol.
[www.thespiritsbusiness.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Robots armed with UV light fight grape mildew 05 June 2020 11:56 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Robots armed with UV light fight grape mildew
Robots fitted with ultraviolet light lamps that roam vineyards at night are proving effective at killing powdery mildew, a devastating pathogen for many crops, including grapes.
[news.cornell.edu]
John
Life is always better when I wine.
Koken is meer dan een recept.
Robots fitted with ultraviolet light lamps that roam vineyards at night are proving effective at killing powdery mildew, a devastating pathogen for many crops, including grapes.
[news.cornell.edu]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Alain Bouquet’s first disease-resistant varieties listed in the French catalogue 05 June 2020 17:21 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Alain Bouquet’s first disease-resistant varieties listed in the French catalogue
This is the latest step towards recognition of the visionary work by late French researcher Alain Bouquet on grape varieties resistant to fungal diseases (downy and powdery mildew). After the academic tribute from the National Institute for Agronomic Research (INRA), the Official Catalogue of Species and Varieties of Plants Grown in France can register two of his new varieties following publication of the March 13 decree - Rebelia (red) and Recybel (white). Approved by the Technical Standing Committee for Vine Breeding (CTPS), the registrations mark the successful completion of the Fijus project, whose aim is to obtain varieties specific to grape juice production.
[www.vitisphere.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
This is the latest step towards recognition of the visionary work by late French researcher Alain Bouquet on grape varieties resistant to fungal diseases (downy and powdery mildew). After the academic tribute from the National Institute for Agronomic Research (INRA), the Official Catalogue of Species and Varieties of Plants Grown in France can register two of his new varieties following publication of the March 13 decree - Rebelia (red) and Recybel (white). Approved by the Technical Standing Committee for Vine Breeding (CTPS), the registrations mark the successful completion of the Fijus project, whose aim is to obtain varieties specific to grape juice production.
[www.vitisphere.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
The science of flor: what’s that growing on my wine? 08 June 2020 17:37 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
The science of flor: what’s that growing on my wine?
What is flor? It’s something that grows on the surface of wine: a film of yeasts. And it alters the flavour of the wine in interesting ways. Currently in fashion, it’s a subject that’s worth finding out about.
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
What is flor? It’s something that grows on the surface of wine: a film of yeasts. And it alters the flavour of the wine in interesting ways. Currently in fashion, it’s a subject that’s worth finding out about.
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Why Simple Carbon Dioxide Is the Hottest New Ingredient in Modern Winemaking 08 June 2020 17:40 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Why Simple Carbon Dioxide Is the Hottest New Ingredient in Modern Winemaking
Carbonic maceration is without a doubt one of the cooler phrases in winemaking. It sounds like the name of an epic electronic band or the title of a great sci-fi sequel.
[www.themanual.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Carbonic maceration is without a doubt one of the cooler phrases in winemaking. It sounds like the name of an epic electronic band or the title of a great sci-fi sequel.
[www.themanual.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Juice stabulation, an interesting winemaking technique 30 June 2020 16:55 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Juice stabulation, an interesting winemaking technique
Juice stabulation is a newly famous winemaking technique. It was first used by winemakers in Gascony a couple of decades ago, but it is its recent adoption by rosé winemakers in Provence that has given this way of making wine more attention. Their rosé wines have got progressively paler over the years, and this has presented winemakers with a bit of a challenge. Many of the flavour compounds in red wine come from the skins, and for rosé this is also true, albeit to a lesser extent because of the short time it is left in contact with the skins – just long enough to get the desired colour. So if the wines are getting paler, the length of time in contact with the skins is getting shorter, and the extraction of flavour compounds is getting lower. This results in wines with less flavour, so Provençal winemakers have come up with a technique to offset this, called juice stabulation.
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Juice stabulation is a newly famous winemaking technique. It was first used by winemakers in Gascony a couple of decades ago, but it is its recent adoption by rosé winemakers in Provence that has given this way of making wine more attention. Their rosé wines have got progressively paler over the years, and this has presented winemakers with a bit of a challenge. Many of the flavour compounds in red wine come from the skins, and for rosé this is also true, albeit to a lesser extent because of the short time it is left in contact with the skins – just long enough to get the desired colour. So if the wines are getting paler, the length of time in contact with the skins is getting shorter, and the extraction of flavour compounds is getting lower. This results in wines with less flavour, so Provençal winemakers have come up with a technique to offset this, called juice stabulation.
[wineanorak.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Fighting Vineyard Fungal Disease, With and Without Copper 06 July 2020 17:36 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Fighting Vineyard Fungal Disease, With and Without Copper
For organic vintners, copper-based sprays have proven to be the most effective tool for combatting downy mildew. Prevalent in regions with warm, humid springs and summers, the fungal disease can wipe out entire vintages. Left untreated, it can even kill grapevines. For organic producers in large parts of northern Europe and the eastern U.S., copper is therefore not just a tool, but a necessity.
[vinepair.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
For organic vintners, copper-based sprays have proven to be the most effective tool for combatting downy mildew. Prevalent in regions with warm, humid springs and summers, the fungal disease can wipe out entire vintages. Left untreated, it can even kill grapevines. For organic producers in large parts of northern Europe and the eastern U.S., copper is therefore not just a tool, but a necessity.
[vinepair.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
The Divisive Impact of Brettanomyces in Wine 15 July 2020 17:34 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
The Divisive Impact of Brettanomyces in Wine
Winemakers will tell you that Brettanomyces is either the root of all evil, or amazing yeasts with something beautiful to share with the world. Brett can also be a Jekyll and Hyde: an asset one moment, a destructive force shortly thereafter.
[www.winemag.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Winemakers will tell you that Brettanomyces is either the root of all evil, or amazing yeasts with something beautiful to share with the world. Brett can also be a Jekyll and Hyde: an asset one moment, a destructive force shortly thereafter.
[www.winemag.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
A SWOT analysis of going ‘wild’ 21 July 2020 17:39 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
A SWOT analysis of going ‘wild’
Using indigenous yeast from a winemaker’s perspective
No matter what your winemaking style, the wine region you are from, the grape variety you are working with, how many trophies you have won or what football team you barrack for – one thing stays reliably constant in winemaking: the sugars (carbohydrates) in grapes are turned into alcohol and carbon dioxide by tiny legends called yeast. This is the glory of fermentation.
[winetitles.com.au]
John
Life is always better when I wine.
Koken is meer dan een recept.
Using indigenous yeast from a winemaker’s perspective
No matter what your winemaking style, the wine region you are from, the grape variety you are working with, how many trophies you have won or what football team you barrack for – one thing stays reliably constant in winemaking: the sugars (carbohydrates) in grapes are turned into alcohol and carbon dioxide by tiny legends called yeast. This is the glory of fermentation.
[winetitles.com.au]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Scientists make wine and cheese using weeds 23 July 2020 17:31 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Scientists make wine and cheese using weeds
Scientists at South Ural State University (SUSU) have discovered that the extract of a common weed plant, Bidens pilosa, is a promising source of enzymes for the food industry. According to the authors, the technique can produce cheaper plant alternatives to expensive enzymes necessary in wine and cheese production. The study is published in the International Journal of Scientific and Technology Research.
[phys.org]
John
Life is always better when I wine.
Koken is meer dan een recept.
Scientists at South Ural State University (SUSU) have discovered that the extract of a common weed plant, Bidens pilosa, is a promising source of enzymes for the food industry. According to the authors, the technique can produce cheaper plant alternatives to expensive enzymes necessary in wine and cheese production. The study is published in the International Journal of Scientific and Technology Research.
[phys.org]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Malolactische fermentatie: kennis versus praktijk 23 July 2020 18:00 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Malolactische fermentatie: kennis versus praktijk
Maret Du Toit, Stellenbosch University - Elda Lerm, Ankergist
De kennis, doelstellingen en het beheer van malolactische fermentatie (MLF) zijn de afgelopen jaren sterk geëvolueerd. Tot voor kort was Oenococus oeni het belangrijkste micro-organisme dat verantwoordelijk was en het enige doel was om het aanwezige appelzuur te consumeren.
[www.infowine.com]#
John
Life is always better when I wine.
Koken is meer dan een recept.
Maret Du Toit, Stellenbosch University - Elda Lerm, Ankergist
De kennis, doelstellingen en het beheer van malolactische fermentatie (MLF) zijn de afgelopen jaren sterk geëvolueerd. Tot voor kort was Oenococus oeni het belangrijkste micro-organisme dat verantwoordelijk was en het enige doel was om het aanwezige appelzuur te consumeren.
[www.infowine.com]#
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Premox explained 01 August 2020 18:53 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Premox explained
Premature oxidation (premox) is a scourge that has affected white burgundy since the mid-nineties. It needs to be distinguished from natural oxidation, which occurs in all wines over a long period.
[www.therealreview.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Premature oxidation (premox) is a scourge that has affected white burgundy since the mid-nineties. It needs to be distinguished from natural oxidation, which occurs in all wines over a long period.
[www.therealreview.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
Nanofiltration process as non-thermal alternative to thermovinification in Pinot noir winemaking 11 August 2020 17:13 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
Nanofiltration process as non-thermal alternative to thermovinification in Pinot noir winemaking
Spread the love
[www.ciencia-e-vinho.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
Spread the love
[www.ciencia-e-vinho.com]
John
Life is always better when I wine.
Koken is meer dan een recept.
|
DMDC – an insurance policy 13 August 2020 17:01 |
Beheerder Registratiedatum: 10 jaren geleden Berichten: 8.971 |
DMDC – an insurance policy
Dimethyl dicarbonate (DMDC) is a chemical antimicrobial additive that can be used in addition to sulfur
dioxide when there is increased risk of microbiological growth in wine. Its main use has been as an
insurance policy when bottling wines with residual sugar or as a control against Brettanomyces or other
viable microorganisms when adequate levels of sulfur dioxide or filtration are not achievable. In this
column, Adrian Coulter answers some of the questions that arise when winemakers consider using DMDC
at bottling
[www.awri.com.au]
John
Life is always better when I wine.
Koken is meer dan een recept.
Dimethyl dicarbonate (DMDC) is a chemical antimicrobial additive that can be used in addition to sulfur
dioxide when there is increased risk of microbiological growth in wine. Its main use has been as an
insurance policy when bottling wines with residual sugar or as a control against Brettanomyces or other
viable microorganisms when adequate levels of sulfur dioxide or filtration are not achievable. In this
column, Adrian Coulter answers some of the questions that arise when winemakers consider using DMDC
at bottling
[www.awri.com.au]
John
Life is always better when I wine.
Koken is meer dan een recept.
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