Fruit Puree Preservative

NadiNadi Member
edited July 2019 in Formulating
Hi,

I am completely new to formulations, so please bear with me. I am trying to be a mad scientist and work on a project.

I am trying to formulate something that can stay shelf stable for atleast 12+ months

Ingredients 

  • 80% - 90% Fruit Puree
  • 5% - Ascorbic acid

pH - 2.20 - 3.80

Can you please suggest any good preservative, that can make 'fruit puree' shelf stable.

Any suggestions/advice greatly appreciated !! 


Comments

  • PharmaPharma Member, Pharmacist
    Should it be edible or what's the purpose of that puree?
  • NadiNadi Member
    It is not for ingestion 
  • BelassiBelassi Member, PCF student
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • PharmaPharma Member, Pharmacist
    THAT was my thought too! Alas, jam requires >40% sugar to be preserved. Some benzoic and sorbic acid might suffice to push it down to 20%?
  • BelassiBelassi Member, PCF student
    Funnily enough I did try making jam with 30% sugar and additional pectin. I added 0.5% sodium benzoate but after about 6 weeks it went mouldy.
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • I have done dietary  supplements for sale in the Chinese market where I have added vitamins/minerals another other ingredients into a fruit juice concentrate and puree. 80-90% puree should have a brix of over 70, if the pH is as low as it is (usually there is plenty of natural acids so tend to be low pH anyway) should should be fine with just potassium sorbate - 0.08%  is usually enough; however, if this is not intended for ingestion, you can increase the amount accordingly. I have checked similar products - and the water activity is quite low (<1 Aw); though you can top up with glycerol instead of water if need be.
  • NadiNadi Member
    @Belassi, @Pharma ; - Thats funny, You are right, requirement totally sounds like Jam  :D


    @Herbnerd ; - Thanks a lot for your help, this helps a lot

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