VINIFLORA® CH11 is an Oenococcus oeni isolated from cool-climate wines. VINIFLORA® CH11 was specifically selected for wines fermented at low temperature and low pH. However, VINIFLORA® CH11 can also be used in moderate pH wines, where it will gives high-speed malolactic fermentation.
Low pH corresponds to high acidity, which is known to kill or inactivate malolactic bacteria. However, VINIFLORA® CH11 is highly robust when it comes to pH and can perform a fast and reliable malolactic fermentation in low-pH wines (Figure 1).
Often, low pH corresponds with a cool climate and thereby a low temperature. Fortunately, VINIFLORA® CH11’s strong, malolactic activity can also withstand low temperature.
VINIFLORA® CH11:
- is an amazing tool for winemakers in cool climates struggling to achieve malolactic fermentation in low-pH wines.
- produces low to medium amounts of diacetyl, keeping the wines lean and elegant.
- is a favored, malolactic bacteria for white wines. However, over recent years winemakers have also become fond of using CH11 in red wines to achieve a high-speed malolactic fermentation (Figure 2).
- gives you speed and a reliable malolactic fermentation, even in low-pH wines.
- can be used for early co-inoculation, late co-inoculation as well as sequential inoculation (Figure 1 and Figure 2).

Figure 1. Malolactic fermentation with CH11 in Chardonnay (pH 3.0 and temperature 16°C). Sequential inoculation

Figure 2. Late co-inoculation of CH11 in Merlot, France (2013), pH 3.4

What’s more, the range is an effective solution for lowering or removing sulphites in wine, opening doors to the wineries to respond to consumers demand for more natural wines and global trends for less chemical/preservatives.
With selected yeast and bacteria from VINIFLORA® range, it becomes possible to produce wines with low or no SO2 without compromising on quality, and with much less unwanted volatile acidity.
Are you interested in VINIFLORA® wine and bacteria range? Contact us for more information.
and a future defined by natural ingredients,” says CEO Mauricio Graber.