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Hi friends !!!
Recently, I have started to breed drosophila (wingless form). I use a simple
substrate with corn flakes, oat flakes, sugar, banana, sugar and
unfermentaitve beer leaven. (The first recipe contained fermentative
A few breeders have used a chemical preservative called "nipagina" (sorry
but I'don't know the English translation) to prevent molds. Now, "Nipagina"
is reteined a cancerogenic substance, so it's a must to use another safe
anti-mold. Citric acid could be a valid alternative, but I have never tried
During this weeks I tried to use unfermentative leaven, because the
fermentative yeast can produce an excessive substrate swelling. This bulge
can be stopped with a freezing process. If the substrate is keep at room
temperature, after two/three days, bulge will be stop. Using a
unfermentative leaven, bulge is absent and it's possible to use the
substrate immediately or after a day. Have anyone tried to use
unfermentative leaven with good results ??
By the way, I haven't use any type of preservatized substrate and I have
equally obtained a good hatch. My personal experience could suggest to
avoid anti-mold substance but I prefer to know your experiences.
Thank you in advance !
Daniele Cerri - Italy
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