Wyeast 4007 Malolactic Bacteria

Wyeast 4007 Malolactic Bacteria

Malolactic Bacteria Accessories  
In Stock
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A liquid Malo-lactic culture that contains a blend of ER1A and Ey2d malo-lactic cultures suitable for a fermentation pH of 2.9 or above and temperatures as low as 55F (13C). Good for 5 gallons of wine.

Notes from Wyeast: Fresh liquid cultures of L. oenos ER1A and EY2D provide rapid and complete malic acid to lactic acid reduction to balance and soften wines. ER1A and EY2D perform well in conditions of low pH and cool cellaring. Typical conditions of high wine acidity can be improved by reducing the harsh, sharp malic acid in the wine to the softer and smoother lactic acid. Other flavor improvements including vanilla and buttery notes can be anticipated. Natural occurring malic acid bacteria on fruit may be of inferior quality or quantity to complete malo-lactic fermentation. Vinter's ChoiceTM malo-lactic cultures are suitable of pH 2.9 or greater and cellar temperatures as low as 55°F.

Test Results (At this time we do not know what strains of malo-lactic were involved in this test.):
The performance of two strains of Leuconostoc oenos, Er1a and Ey2d, isolated from Oregon wines was evaluated in experimentally and commercially produced wines. Experimental lots of Chardonnay, Pinot Blanc, and Pinot Noir were inoculated at the end of yeast fermentation at 18°C with approximately 106 cfu/ml of Er1a, Ey2d, ML-34, PSU-1, MLT-kli, and BB44-40. Under low pH conditions, the Oregon strains completed MALOLACTIC fermentations (MLF) more rapidly than the other commercially available strains: at pH less than 3.3 Er1a completed MLF in an average of 48 days, Ey2d in 94 days, MLT-kli in 127 days, and the other strains in 143 days or longer. At pH greater than 3.4 all the strains completed MLF within 31 days. Commercial wines were inoculated during yeast fermentations with 0.5 to 2.0% V/V Er1a and Ey2d grape juice cultures (109 cfu/ml) and wine cultures (108 cfu/ml). Er1a completed MLF in 1-2 months at cellar temperatures of 15°C or higher, but was sensitive to cooler temperatures. Ey2d was more cold tolerant and completed MLF in 2-3 months at temperatures in 12-15°C. In addition, Ey2d retained MALOLACTIC activity at temperatures as high as 80°C when all other strains including Er1a were inactive.

Click here for a PDF of the MoreWine Manual on Malolactic fementation.

Item # DYWM6
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.25 LBS
Community Q&A

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Browse 7 questions Browse 7 questions and 69 answers
Why did you choose this?
MoreFlavor Store
Used it before with good results
Gerald J on Sep 25, 2020
Necessary for my red wines
Travis C on Sep 17, 2020
Used it before with good results
Gerald J on Sep 25, 2020
Ease of use
Kerry on Sep 21, 2020
Necessary for my red wines
Travis C on Sep 17, 2020
easy to use
Kenneth D on Sep 15, 2020
Good for lower pH
Chris L on Sep 14, 2020
Because I need it
Philip K. B on Sep 9, 2020
making red wine from grapes
Margaret K on Sep 8, 2020
New to me, must try.
Robert D. B on Sep 3, 2020
I plan to do a MLF on my Amarone wine.
Peter N on Sep 2, 2020
Packet size
Dick Z on Aug 27, 2020
Price and looks like what I want
Dennis M on Aug 26, 2020
sean w on Aug 24, 2020
used last year
Tony M P on Aug 23, 2020
Had good experience with malolactic fermentation with this product.
John K on Aug 22, 2020
winemaker magazine
Adrienne E on Aug 13, 2020
Great for malo fermentation
C E T on Aug 4, 2020
I'm am learning winemaking
David B on Jul 28, 2020
Wanted to make sure MLF for my current wine got a good head start - basement temperatures are a little iffy
Andrew B on Jun 2, 2020
Used it before
Craig on May 28, 2020
Good for difficult white wines
Phillip R on May 8, 2020
Peter N on Feb 24, 2020
Some sharper batches of cider that could use some malic acid reduction and improved mouthfeel
OOLLC on Jan 22, 2020
Has worked well in the past and is a convienient size
Craig on Nov 7, 2019
it was available in CA
cheryl d on Oct 22, 2019
I have used it before and liked it
John B on Oct 16, 2019
used it before
OSWALD L B on Oct 14, 2019
I have used this product before.
David M on Oct 1, 2019
Will use this for this years Frontenac rouge vintage
Charles L on Sep 21, 2019
I only need enough MLB for a 6 gallon carboy
Peter N on Sep 21, 2019
Of the malolactic cultures I've used, this one works the best for small batches
Daniel M on Sep 19, 2019
Only need for 5 gals
Kenneth B on Sep 17, 2019
Recommended to me by fellow winemakers for red wine
Mario Montemor Da S on Sep 12, 2019
Used it last year
Travis B on Sep 5, 2019
size appeals to me
Margaret M on Jul 24, 2019
I liked it last time I used it
John B on Jun 11, 2019
Theresa G on May 20, 2019
I've used this before. It worked well and is very easy to just open and pour into mu must.
Don on May 14, 2019
Malolactic culture for Merlot
Goose on Apr 12, 2019
We've had consistently good results with this product when used on a variety of dark red juice.
James H on Apr 10, 2019
I plan to use for ML fermentation in my next pinot noir
Peter N on Apr 1, 2019
Buttery Chardonnay
Evan W on Mar 30, 2019
Has always worked for me in the past!
Valued C on Dec 31, 2018
Ease of use and need
Nicholas F on Oct 16, 2018
malic to lactic acid in wines
Daniel K on Oct 15, 2018
It works the best
Chris R on Oct 11, 2018
Used before with great results
Brian P on Sep 20, 2018
I don't want alot of sulfides in my wine
John f on Sep 17, 2018
Just why I need for now
Eric D on Aug 8, 2018
generic dry red malolactic culture
ALEXEY S on Jul 24, 2018
Need to restart a stuck malo fermentation
Mitchel Adam R on Jun 26, 2018
Ease of use
Kerry on Sep 21, 2020
easy to use
Kenneth D on Sep 15, 2020
Will this work in co-inoculation with W15 in Chardonnay or Pinot Noir? Would you still use Opti-Malo +
Diane Rudnick on Jun 22, 2020
BEST ANSWER: it should work at co-inoculation yes. Whether to use opti malo is part personal preference and part dependent on nutrition analysis. Usually the yeast activity is enough to provide all that’s needed. I’ve personally stopped inoculating with either yeast or malo. No nutrient adds if grapes are healthy. Native ferments have been excellent and easy and delicious.
Storing for future use?
Jerry Martinez on Oct 6, 2019
BEST ANSWER: I’ve only stored for future use once. As long as it stays refrigerated. I did this with the malolactic last year as I made my whites a little later than normal. It was fine, worked well. As soon as I receive any orders of yeast from More Wine I immediately date them, write which type of wine I will be using with that certain yeast and then refrigerate. I usually by multiple kinds of yeast prior to buying my wine grapes or juice but I usually have an idea of what I want. Sometimes my local wine supplier does not get certain varieties that I’m looking for. Also, I enjoy More Wine’s yeast pairing guide!
Is it recommended to use OptiMalo nutrients with this liquid MLB? Or are nutrients already added in the liquid culture?
Kevin E Hart on May 29, 2019
BEST ANSWER: You will need to add a nutrient along with the bacteria. OptiMalo is not in the bacteria solution. The bacteria can perform MLF without OptiMalo, but no guarentee.
I've used Acti-ML in the hydration phase for dry malolactic bacterias. Already hydrated, I presume this is not necessary when using Wyeast 4007 Liquid Malolactic Bacteria. Is this correct?
Don on May 16, 2019
BEST ANSWER: I've used Opti Malo with the liquid malo. It's another nutrient and aimed more towards yeast already hydrated, unlike the acti mal which seems to be formulated for the rehydration process.
Should this be shipped on ice?
Peter Gabriel on Oct 15, 2019
BEST ANSWER: Hi Peter, yes we always recommend shipping liquid cultures on ice. Though we can't guarantee it'll arrive cold, it's helpful to keep it cold for as long as possible in shipping.
Is the packaging good enough for International Shipping without Ice Pack?
Kyaw Thuya on Mar 10, 2019
BEST ANSWER: Hello Kyaw - Wyeast's packaging is extremely sturdy as these are intended to puff up without exploding. It should be fine for Intl. shipping without ice, however may require some propagation to regain vitality.

5.0 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
It works!
Malo is going great. Very happy.
June 9, 2020
4 months ago
First Time - Worked Great
I used this on a Chardonnay Kit. Worked great. Was complete in 2.5 weeks. Softened the acidity of the wine. Very nice.
January 24, 2020
9 months ago
Started right up after primary was complete. Keeping temp 70-75
October 8, 2019
1 year ago
Rapid MLF
Takes off fast and isn't picky! None of the stinky MLF aromas that some other strains produce.
October 3, 2019
1 year ago
Worth the effort & small expense
I have used this ML culture before with great results. Paper chromatography verified results. Added at the end of the alcohol fermentation after first racking. Economical to use compared to others I used. Pretty hard to show a picture of something that is on the pallet, but a double gold Merlot is proof for me.
April 27, 2019
1 year ago
No guess work required!
So far so good and it’s serving its intended purpose.
November 6, 2018
1 year ago