I have been asked to formulate a natural health supplement (my usual job) but the customer wants something a little different to what I am used to formulating.
I can’t remember the full details, but the guts of it is a 10 mL serve, with:
- 200 mg of oil, something like
- 350 mg of Silica - Colloidal Anhydrous (Or Silicon Dioxide as it is known everywhere else)
- Vitamin C (again, the issue of stabilising this in a liquid)
- fruit juice - probably a 70 brix fruit juice concentrate
- Natural flavours - probably FTNFs,
- natural colours
- Citric acid,
- potassium sorbate and
- Sodium benzoate.
In your esteemed opinions, is it possible to formulate this sort of product without the use of conventional surfactants and create an emulsion using Silica (if I need to increase the amount of silica to achieve this, I can do - I am sure the customer will agree).
Would there be any benefit to increasing water viscosity using guar/xanthan/acacia gums to help stabilise. I know that Silicon Dioxide can be used to increase the viscosity of water, (Handbook of Pharmaceutical Excipients states 2-10% for suspending and thickening).
I am somewhat limited by the customer’s refusal to use “chemicals” because they want to maintain a clean label and keep it as food-like as possible.
So, in short, before I head to the lab to trial this formula, I would like to know your thoughts on achieving this?
Thanks in advance, dear chaps.
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