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Winemaking (rec.crafts.winemaking) Discussion of the process, recipes, tips, techniques and general exchange of lore on the process, methods and history of wine making. Includes traditional grape wines, sparkling wines & champagnes. |
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Malo-Lactic fermentation
I've seen references to ML fermentation in lots of posts but never
made much more than concord, blackberry, strawberry, and some other fruit wines. I don't suppose ML fermentation would be useful in those wines, but what sort of wines is it used in, and what does it do for the wine? Is this related in any way to a lactobacillus fermentation? Thanks!!! Don |
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Malo-Lactic fermentation
On Dec 26, 9:05*pm, Donald > wrote:
> I've seen references to ML fermentation in lots of posts but never > made much more than concord, blackberry, strawberry, and some other > fruit wines. > > I don't suppose ML fermentation would be useful in those wines, but > what sort of wines is it used in, and what does it do for the wine? > > Is this related in any way to a lactobacillus fermentation? > > Thanks!!! > > Don I suppose you could induce MLF in a concord, but i'm not sure that the expense would be worth the outcome. I use it to add complexity to wine. I use Baccus Malolactic Bacteria oenococcus oeni for my MLF. |
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Malo-Lactic fermentation
On Sat, 27 Dec 2008 06:03:24 -0800 (PST), Wayne Harris
> wrote: > >I suppose you could induce MLF in a concord, but i'm not sure that >the expense would be worth the outcome. I use it to add complexity to >wine. > >I use Baccus Malolactic Bacteria oenococcus oeni for my MLF. > I agree, Concord doesn't need any complexity, nor would most fruit wines like strawberry, blackberry, etc. I was curious as to what it did. Are there certain varietal wines where it is more or less a requirement in the process, or is this an optional thing? Don |
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Malo-Lactic fermentation
"Donald" > wrote in message ... > On Sat, 27 Dec 2008 06:03:24 -0800 (PST), Wayne Harris > > wrote: > >> >>I suppose you could induce MLF in a concord, but i'm not sure that >>the expense would be worth the outcome. I use it to add complexity to >>wine. >> >>I use Baccus Malolactic Bacteria oenococcus oeni for my MLF. >> > > I agree, Concord doesn't need any complexity, nor would most fruit > wines like strawberry, blackberry, etc. > > I was curious as to what it did. > > Are there certain varietal wines where it is more or less a > requirement in the process, or is this an optional thing? > > Don Donald, Grapes contain about equal parts of tartaric acid and malic acid. Most high quality red wines are made using two distinctly different fermentations. The conversion of malic acid into lactic acid by bacteria in wine is called malolactic fermentation (MLF). Small quantities of different byproducts are produced during malolactic fermentation, and some of these byproducts can make positive contributions to the quality of the wine. Lactic acid is weaker than malic acid. So MLF can also reduce wine acidity and improve the balance of high acid wines. In addition, MLF removes unstable malic acid from the wine, and when all of the malic acid is gone, the wine is more stable biologically. The presence of malic acid in high pH red wines always represents a potential stability problem. Bottled wines containing malic acid and lactic acid bacteria often undergo malolactic fermentation and MLF in bottled wine produces ugly bottle deposits, off-odors, bad tastes and effervescent wine. MLF in white and blush wines can usually be controlled with sulfur dioxide. But, MLF in red wines is more difficult to control, and high pH, red wines containing malic acid are very prone to MLF. Lum |
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Malo-Lactic fermentation
On Sun, 28 Dec 2008 16:50:35 -0800, "Lum Eisenman"
> wrote: > . . . The presence of malic acid in high pH red wines always represents a >potential stability problem. Bottled wines containing malic acid and lactic >acid bacteria often undergo malolactic fermentation and MLF in bottled wine >produces ugly bottle deposits, off-odors, bad tastes and effervescent wine. >MLF in white and blush wines can usually be controlled with sulfur dioxide. >But, MLF in red wines is more difficult to control, and high pH, red wines >containing malic acid are very prone to MLF. > >Lum Thanks for the "why" of it all. If I ever make a varietal wine, I'll need learn more about this. Don |
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Malo-Lactic fermentation
On Dec 29, 6:56*pm, Donald > wrote:
> On Sun, 28 Dec 2008 16:50:35 -0800, "Lum Eisenman" > > > wrote: > > . . . The presence of malic acid in high pH red wines always represents a > >potential stability problem. Bottled wines containing malic acid and lactic > >acid bacteria often undergo malolactic fermentation and MLF in bottled wine > >produces ugly bottle deposits, off-odors, bad tastes and effervescent wine. > >MLF in white and blush wines can usually be controlled with sulfur dioxide. > >But, MLF in red wines is more difficult to control, and high pH, red wines > >containing malic acid are very prone to MLF. > > >Lum > > Thanks for the "why" of it all. > > If I ever make a varietal wine, I'll need learn more about this. > > Don Don, Concord is a high acid grape, MLF isn't something I would use on any fruit forward wine like it. It softens a wine as Lum mentioned. It's usually used to soften acids but the type of grape matters too. It reduces fruitiness so that plays into the decision. It can occur spontaneously so proper sulfite levels are needed if it is to be avoided. Sulfite levels in red wine are hard to measure so some people just add 1/4 teaspoon potassium metabisulfite at bottling. Joe |
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Malo-Lactic fermentation
"Donald" > wrote in message ... > I've seen references to ML fermentation in lots of posts but never > made much more than concord, blackberry, strawberry, and some other > fruit wines. > > I don't suppose ML fermentation would be useful in those wines, but > what sort of wines is it used in, and what does it do for the wine? > > Is this related in any way to a lactobacillus fermentation? > > Thanks!!! > > Don ML fermentation is considered desirable in cider, as a producer of a more mellow outcome. |
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Malo-Lactic fermentation
On Wed, 31 Dec 2008 05:15:37 -0800 (PST), Joe Sallustio
> wrote: > It can occur >spontaneously so proper sulfite levels are needed if it is to be >avoided. Sulfite levels in red wine are hard to measure so some people >just add 1/4 teaspoon potassium metabisulfite at bottling. Now I have to decide if I want any for my wife to have or not since she is sulfite sensitive and it makes her sick. I can tolerate it if it bothers me by taking medicine for my asthma. Up until now I've avoided sulfites after the initial 24 hours (after which I also pitch the yeast). I didn't realize that ML was a risk for this wine. Don |
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Malo-Lactic fermentation
On Jan 5, 10:15*pm, Donald > wrote:
> On Wed, 31 Dec 2008 05:15:37 -0800 (PST), Joe Sallustio > > > wrote: > > It can occur > >spontaneously so proper sulfite levels are needed if it is to be > >avoided. Sulfite levels in red wine are hard to measure so some people > >just add 1/4 teaspoon potassium metabisulfite at bottling. > > Now I have to decide if I want any for my wife to have or not since > she is sulfite sensitive and it makes her sick. I can tolerate it if > it bothers me by taking medicine for my asthma. Up until now I've > avoided sulfites after the initial 24 hours (after which I also pitch > the yeast). I didn't realize that ML was a risk for this wine. > > Don Don, Yeast choice is key also. If you want a fruit foward wine without spontanous MLF or at least very little MLF kicking off in the primary fermentation use a Bayanus yeast strain. Prisse de Mousse from Red Star is cheap and it works great. MLF can , and will kick off in the primary if you use yeast that is conducive to MLF. Prisse de Mouse is a killer strain and hogs all the nutrients from the MLF bacteria to prevent/retard MLF from starting. If you use a yeast like 71-B, d254, d80, d47 MLF will be going strong even before primary is complete. Bob |
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