Is lysozyme effective against all lactic acid bacteria?
Like SO2 , some lactic strains show resistance to lysozyme. Perform bench-top trials to determine the effectiveness and correct addition rate of lysozyme. I have a stuck red and the VA is creeping. The wine isn t through MLF, when should I add Lysozyme? If the lactic population is below 106, and MLF has started, then use 150-400 ppm of lysozyme now. If the population is above 106, then wait for MLF to complete and immediately add lysozyme. I added 300 ppm of Lysozyme to a stuck Chardonnay fermentation to help control VA. Will it be possible to get the wine to complete MLF? Yes. When lysozyme is added to juice or must it will react with pectin, polyphenols and solids. This interference will not affect lysozyme s ability to work against the target population. It will, however, lead to an eventual decrease in activity. If MLF is desired after lysozyme treatment, add 25 g of bentonite per 100 l of wine to help reduce residual activity and inoculate with a strong ML starter culture. How lon
The amount of residual lysozyme activity depends on the type of beer, timing of addition, initial bacterial population and the addition rate. Activity loss is greatest in darker beers, which contain more polyphenols. Research has shown that lysozyme is relatively stable in beer and will maintain at least 50% of its activity over a six month period when added to the final bottled product.
