![]() ![]() ![]() The vegetative forms of bacteria can be destroyed by boiling but the spores can remain viable after boiling even for several hours. The World Health Organization underlines that killing spores is very different from killing just bacteria: Within a day of the jar achieving a vacuum seal, the spores will spring to life in the oxygen-free environment they need to prosper, and as they germinate, will release their deadly toxin, leaving you a tasty jar of botulism to serve to your family and friends. You might kill off the live bacteria, but the spores from which they “hatch” will still be in the jar, so the next generation can “hatch” and grow in a nice protected environment with lots of food to help them flourish.Īnd in fact, the 100 C (212 F) will only have killed off many competing bacteria, leaving the truly nasty “newly-hatched” bacteria with a playground all to themselves so they can flourish even more than they would have been able to otherwise with competition. Many bacterial spores are very heat resistant because they have very thick shells requiring temperatures well in excess of the maximum 100 C (212 F) that boiling water can ever reach. The problem is, live bacteria are very different from the bacterial spores that bacteria “hatch” from. Quels conseils et astuces pour la cuisson et le temps de stérilisation? Accessed January 2017 at When Le Parfait’s recipe developers do heat-process jars of low-acid foods, they say that they are aiming to eliminate (live) bacteria: “…la température doit atteindre au moins les 100☌, ce qui est nécessaire pour éliminer les bactéries.” (“the temperature must reach at least 100 C, which is necessary to eliminate bacteria.”) Le Parfait. Problems with the recipes include jars of jam not being processed (in addition to using the inversion method on them), tomato products not being acidified, meat, fish, and low-acid vegetables being canned using a boiling water bath which is grossly insufficient to kill any botulism spores present, etc. Healthy Canning sadly can’t endorse Le Parfait’s home canning recipes. Healthy Canning did its review of Le Parfait’s Familia Wiss Mason jars using tested recipes from reputable sources. suitable for all conservation methods.Caution against using Le Parfait home canning recipes
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