Talk:Fermentation in winemaking

message: How high can the concentration of Ethanol get, before it becomes toxic to the yeast?  — Preceding unsigned comment added by 69.124.116.101 (talk) 02:41, 18 April 2018 (UTC)

message: I don't see any mention in this article about the inoculation process to kill the wild yeast before the cultured yeasts are introduced. -Amatulic 00:58, 23 October 2007 (UTC)
replies: text: It is up to the winemaker (and I suspect there are some regional differences in regards to the ambient yeasts) but at least up here in the Pacific Northwest the ambient yeast is not really killed. The cultured yeast sort of dominate and take over with work of the ambient yeast being downplayed. Double checking with my sources, I also don't see any reference in them about killing the wild yeast as well. But feel free to include information with any source you may have. AgneCheese/Wine 01:11, 23 October 2007 (UTC)
replies: text: The handful of California winemakers I've asked all inoculate the wild yeast to control the process (except for one who doesn't inoculate at all because he's fortunate to have good wild yeast in his fields, and you can taste the difference). The impression I got from these conversations was that the wild yeast is killed or dominated to extinction. -Amatulic 17:14, 23 October 2007 (UTC)
replies: text:  I'm not exactly sure what you mean by "inoculation process".  Usually that refers to actually adding the cultured yeast to the must.   A lot of winemakers do add sulfites to the wine to kill/stun the wild yeast, although the studies indicate that at the levels of SO2 that are used, it has little effect on most species of wild yeast, and no effect on the total growth.  It's actually the vigor of the cultured yeast (if added) that overuns and kills the wild yeasts.  Most winemaking books tend to tell you to add the sulfites to kill the wild yeast, but the microbiological journals for example, this one tend to differ from the "common thinking" of winemakers.   --- The Bethling(Talk) 21:33, 23 October 2007 (UTC)
thread_title: Yeast inoculation

message: I would like to have a explanation of primary and secondary fermentation, I'm not sure what the difference is!!!! Also why is fermentation written with uppercase in the lead section?? --Stefan talk 00:24, 25 October 2007 (UTC)
replies: text: In a lot of ways "secondary fermentation" is sort of a misnomer.   It's actually the same fermentation process (no new yeast or sugars), but the wine is transfered to a secondary container (usually an oak barrel or a stainless steel tank).  Usually one that the winemaker can better control the wine's interaction with oxygen.   This is done because the open vats/barrels that the fermentation starts in become a problem later in the process when it slows down, and less carbon dioxide is coming off the wine. --- The Bethling(Talk) 00:40, 25 October 2007 (UTC)
thread_title:  Comments 

message: Just after this article was started, Agne asked me, as a chemist, to review the article. Well, I am a chemist, but very much at the rarefied physical.theoretical side of the discipline and my knowledge of organic chemistry and biochemistry is rather weak. First, I have gone through making a whole lot of very small changes such as changing capital letters to small letters. Feel free to reverse any of these if you think I am wrong. Second, the broader issues. I think this article does a great job. The technical chemical details are rightly left to Ethanol fermentation and Fermentation (biochemistry). The coverage is good. It is well referenced. Well done. A small point - is "the "barnyard aroma" characteristic in some red wines like Burgundy Pinot noir" restricted to Pinot noir from Burgundy or is it found in Pinot noir from elsewhere? Indeed there seems to be a few points where reference to French wine production might be generalized to many countries, if indeed the point at issue relates to the wine variety and not the country. Apologies that this has taken time. Agne asked me just after I got back from a trip to London from Australia and I have been rather busy and laid low with a virus I suspect I caught on the flight. I have a colleague in the university who used to work in a wine institute. I will ask him to comment, when I see him next. --Bduke 02:28, 3 November 2007 (UTC)
replies: text: Thanks, I really appreciate the review. I'll look into more about some of the country references. I mostly stuck with my sources though things like personal experience, (I've had many of barnyard-y Pinots from Oregon) differ from the quaint generalization. A common theme I've found among most wine resources is that they tend to focus on the "classic descriptions" and generalizations even though the word of wine is filled with more shades of gray then what just the "classics" would portray. AgneCheese/Wine 09:20, 7 November 2007 (UTC)
thread_title: Review

message: Are there more illustrations available related to the wine-elaboration process relating to fermentation?  (For example, ritual dancing connected to use of feet in the traditional-press process, ethnographies on this topic and/or accounts from antiquity?)
Miraclebaby (talk) 05:00, 21 December 2007 (UTC)
replies: text: Hmm, I'm not sure about images from antiquity. But we can certainly request some diagrams of the process with the Project Greenspun Intiative. AgneCheese/Wine 08:21, 21 December 2007 (UTC)
thread_title:  Photos/Diagrams 

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thread_title: Image copyright problem with Image:Brettanomyces.jpg

message: This article talk page was automatically added with  banner as it falls under :Category:Food or one of its subcategories. If you find this addition an error, Kindly undo the changes and update the inappropriate categories if needed. The bot was instructed to tagg these articles upon consenus from WikiProject Food and drink. You can find the related request for tagging here . Maximum and careful attention was done to avoid any wrongly tagging any categories , but mistakes may happen... If you have concerns , please inform on the project talk page -- TinucherianBot (talk) 00:57, 4 July 2008 (UTC)
thread_title: [[WP:FOOD|WikiProject Food and drink]] Tagging

message: The article, although informative, skips the fact that wine can be made from virtually any fruit. Also, primary and secondary fermentation is not explained.  — Preceding unsigned comment added by 88.246.65.253 (talk) 15:53, 25 July 2011 (UTC)
replies: text: The legal definition of "wine" in most countries is a "grape-based product". Otherwise it is needs to be preface with a description like fruit wine, rice wine etc. Also, primary and secondary fermentation are mentioned in the lead paragraph. AgneCheese/Wine 20:58, 22 August 2011 (UTC)
thread_title:  Wine can be made out of all manner of fruits not just grapes 

message: :Feel free to state your position on the renaming proposal by beginning a new line in this section with *Support or *Oppose, then sign your comment with ~~~~. Since polling is not a substitute for discussion, please explain your reasons, taking into account Wikipedia's policy on article titles.
*Neutral I wouldn't mind the move as long as the Fermentation (wine) dab stays redirecting to this article since that is an immensely valuable link and will undoubtedly stay the way that the vast majority of articles are linked to this page. Though to that effect you have to wonder if the move is even needed. AgneCheese/Wine 19:35, 1 March 2013 (UTC)
thread_title: Survey

message: — Assignment last updated by Caleble9 (talk) 06:42, 29 April 2024 (UTC)
thread_title: Wiki Education assignment: Wines and Vines Practicum