Home Cosmetic Science Talk General Autoclaving potassium sorbate stock

  • Autoclaving potassium sorbate stock

    Posted by Bluebird on June 6, 2023 at 1:17 am

    According to this, potassium sorbate solution can be autoclaved to be sterilized.


    If there’s no concern, I’d like to autoclave my stock solution.

    Does anyone know something that contradicts this or would point that autoclaving potassium sorbate would lead to a meaningful loss of activity or in any way, bad?

    For instance, sucrose solution can be autoclaved, but it does lead to caramelization so while it is autoclavable, I know filter-sterilization if preferred. Similarly I am wondering whether there’s a reason not to autoclave potassium sorbate as I haven’t really read people actively autoclaving this.

    philgeis replied 5 months, 3 weeks ago 2 Members · 3 Replies
  • 3 Replies
  • philgeis

    June 6, 2023 at 6:08 am

    Why would you autoclave?

    • Bluebird

      June 6, 2023 at 6:38 am

      why not.

      Just kidding, because that itself can be the source of bacteria.

      You can say “but don’t you add antibacterial preservative anyway?”

      But I have a specific reason why I want this separately sterile.

  • philgeis

    June 6, 2023 at 6:44 am

    Agree - the solution is at risk for contamination. You could get a rough idea by comparing ZOI - before and after autclaving.

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