Home Cosmetic Science Talk Formulating General Sterilization or reduction of microorganisms in the natural raw material

  • Sterilization or reduction of microorganisms in the natural raw material

    Posted by CLAUDIACA on March 13, 2024 at 5:23 pm

    How can I lower the microbiological load of a wildflower oleates in olive oil and cold-extracted oils, what methods are there to sterilize the final product (anhydrous) without altering the product or as little as possible?The formula is this: 8% Chamomile Oleate, 8% Calendula Oleate, 8% Lavander Oleate, Jojoba 12, 10% Argan, 48% avellana, 4% Olive Squalene, 0.2% Bisabool Alpha, 0.1% EO Geranium and 0.1% EO Ylang Ylang, ae lavanda 0.1, 0.6 Vitamin E,

    • This discussion was modified 1 month, 1 week ago by  CLAUDIACA.
    PhilGeis replied 1 month ago 3 Members · 9 Replies
  • 9 Replies
  • PhilGeis

    Member
    March 13, 2024 at 5:42 pm

    Heat to reduce and gamma radiation to sterilize. Both will likely screw up your material.

    • CLAUDIACA

      Member
      March 14, 2024 at 11:54 am

      To what temeraperature is this accomplished? Would it be before adding the assets, i.e. directly to the oleates and for how long? Is pasteurization feasible in these products? In cosmetics, is it used in some cases ?

      • PhilGeis

        Member
        March 14, 2024 at 4:23 pm

        Pasteurization - heating to 140F/60C - try it. May not have same same effect as with aqueous stuff.

        • CLAUDIACA

          Member
          March 16, 2024 at 12:59 pm

          Thank you, I am thinking if I can do this with the plant powder..

      • CLAUDIACA

        Member
        March 16, 2024 at 12:24 pm

        Other option is make the process to the plant powder before make the oleate, I found on the internet a company that sells the technology that consists of taking the spices to 102-122 C with high-pressure steam for 20 to 40 seconds and their properties are not considerably altered, if this is within reach, the ground plant could be made before it is made into oleate. But I think that treatment may be very expensive. do you know about this process?

        • PhilGeis

          Member
          March 16, 2024 at 5:10 pm

          What does the company claim?

  • Cafe33

    Member
    March 14, 2024 at 3:33 am

    I am assuming this is all oil ? I admit I am not familiar with chamomile oleates. Sterile filtration can be performed using microporous membranes filters with a pore size of 0.22 µm or smaller like 0.1 μm.

    Not exactly practical. Oily injectable products are produced this way with benzyl alcohol or chlorobutanol as a preservative. The older standard of 0.45 μm could be sufficient for your purposes and will flow a whole lot better.

    • PhilGeis

      Member
      March 14, 2024 at 6:13 am

      Doubt these will be effective. Bacteria filters work with aq. solutions not oils. Preservatives work poorly on dormant cells and not on spores.

  • PhilGeis

    Member
    March 16, 2024 at 5:30 pm

    You should have your supplier take the responsibility.

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