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Acti-ML is a Malolactic nutrient used during rehydration of both direct inoculation and standard-type Malolactic Bacteria strains. It is a specific blend of inactive yeasts rich in amino acids, mineral cofactors and vitamins. These inactive yeasts are mixed with cellulose to provide more surface area to help keep the bacteria in suspension. Acti-ML can help strengthen the development of bacteria growth under difficult conditions.

Please note that due to its unique formulation, only Acti-ML can be used in the hydration phase of malolactic bacteria. Other ML nutrient formulas are not compatible with this protocol and their use during the hydration phase could severely limit the bacteria's viability!

Acti-ML serves an analogous function to Go-Ferm Protect in yeast fermentations.

To Use:
Mix Acti-ML into 5 times its weight in 25C (77F) chlorine-free water. Add your bacterial culture, then wait 15 minutes before adding to the wine. Dosage rate: 0.84g/gal of wine

Community Q&A

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Browse 3 questions Browse 3 questions and 55 answers
Why did you choose this?
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small size
Joshua G on May 19, 2021
It helps tremedously with MLF
Mario Montemor Da S on Apr 3, 2021
small size
Joshua G on May 19, 2021
recommended by fellow Vintners to help sluggish MLF
Karen F on Apr 20, 2021
It helps tremedously with MLF
Mario Montemor Da S on Apr 3, 2021
To ensure a healthy ML ferment
Jaclyn M on Mar 16, 2021
I helps keep fermentation strong
James B on Feb 10, 2021
ML bacteria instructions recommended
Chris P on Dec 11, 2020
Helps the bugs
Tim D on Nov 26, 2020
your suggestion for re-hydration
Joe F on Nov 6, 2020
No chromatography ability at this point, so better to help the ML along.
bryan m on Oct 30, 2020
makes malolactic go fast
Paul W. W on Oct 27, 2020
friend's suggestion
Alexander H on Oct 20, 2020
To help the ML
Lewis J D on Oct 20, 2020
Tom R on Oct 14, 2020
Adds to ML
David J H on Oct 10, 2020
You should always use this when doing a Malo fermintation
Chris R on Oct 8, 2020
same. your suggestion in the red wine making article
John B on Oct 6, 2020
Recommended for malolactic fermentation
Roberta I on Oct 6, 2020
Rehydrate ML bacteria
Justin Z on Oct 3, 2020
Helps with MLF
Janice M on Oct 1, 2020
Goes with the Malolactic
Thomas A on Sep 30, 2020
Valued C on Sep 22, 2020
for mlf
Richard R on Sep 22, 2020
Anything you can do to increase the likelihood of a good rehydration is a good thing
Kirk A on Sep 18, 2020
Suggested by your site
Andrew G on Sep 16, 2020
Need to use it with the ML
Inez V on Sep 15, 2020
Helps with the MLF
Janice M on Sep 10, 2020
previous use
David C A on Sep 10, 2020
Because i need it
Philip K. B on Sep 9, 2020
Try out
Luis H on Sep 1, 2020
Really boosts the Malo
MICHAEL O on Aug 27, 2020
John J on Aug 27, 2020
used in past
Scott C on Aug 24, 2020
Recommended by your Guide to Red Wine Making
Bruce S on Aug 24, 2020
used last year
Tony M P on Aug 23, 2020
consistent results
Richard E. R on Aug 7, 2020
Gi es a good start to malolactic
Tom B on Aug 5, 2020
Always use for ml hydration
Mark S on Jul 14, 2020
For Malolactic fermentation
Jeff M on Jul 11, 2020
to rehydrate ml bacteria
James K on Jul 8, 2020
to hydrate ML bacteria
Sharon T on Apr 30, 2020
Use this for several years
Ernest S on Mar 28, 2020
Thomas Olinger on Mar 10, 2020
Same as above
Anthony J. D on Nov 12, 2019
To follow the advice given in your making red wine manual.
Guido P on Nov 9, 2019
Required to rehydrate Malolactic culture
bryce f on Oct 26, 2019
I believe we have some barrels of really great tasting & looking Cabernet Sauvignon & Syrah> I want to give them a chance to be really great.
Don Meares on Oct 23, 2019
Gets it going
Gunnar B on Oct 17, 2019
I have 1/2 ton of grapes
David Y on Oct 9, 2019
Past experience
Howard D on Oct 7, 2019
always helps to have nutrients on hand
Matthew H on Oct 4, 2019
recommended by fellow Vintners to help sluggish MLF
Karen F on Apr 20, 2021
To ensure a healthy ML ferment
Jaclyn M on Mar 16, 2021
Should I use this even with a liquid Malo like Wyeast 4007? The website's red winemaking guide is not very clear on this point. It would seem like the Wyeast is already hydrated since it's a liquid, so maybe I don't need this?
Paul R Nash on Oct 25, 2018
BEST ANSWER: I use the Chr Hansen dry CH35 ML after the temp drops below 70 degrees F and the Brix are 2/3 to 3/4 down. I just ad the OPTI'MALO Plus (I do not mix with H2O) at the same time as the ML and then stir off and on for twenty minutes. I add the the OPTI just to help provide an optimum environment for the ML. The package says, "A blend of cellulose nutrients and yeast hulls ... feeds, removes toxins, and keeps the ML in suspension." I use it because it is not very expensive and is easy to use and if it helps to make the wine better, then that is great.
Peter Fox on Oct 2, 2019
Dry Malolactic Bacteria - Viniflora CH16
Dry Malolactic Bacteria - Viniflora CH16
BEST ANSWER: ACTI-ML isn't the nutrient designed to be added to the wine ... it's used during the initial hydration of the ML bacteria. The nutrient to add to the wine during ML is Opti Malo Plus.

5.0 / 5.0
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1 Star
Rated 5 out of 5
Fast delivery
The quick delivery was great
October 28, 2019
1 year ago
Rated 5 out of 5
Used acti-ml and mlf started and completed with no delays.moll
February 8, 2018
over 3 years ago