I am working on Aloe vera gel processing and product preparation. Aloe gel drying is carried out in freeze drying resulted good quality. In which method ,the biological active component are minimum affected so we can made use of Aloe gel in cosmetic products.
Freeze drying method is a method to maintain the biological activity in the sample. You are on the right track. There is no doubt at all. You can proceed with your freeze dried sample for its use in cosmetic products.
Thanks Dr Rathod and Govind for reply.
My question is to maintain biological activity without heat treatment. any other preservative method is suitable like gel stabilization, preservative etc.
A. vera gel and extracts
The gel were gotten from the leaves into a clean container and used as such. While the leaves from which the gel have been drained were air dried, ground and soaked in ethanol for4 days. This was later filtered and the filtrates evaporated to dryness using a rotary evaporator. The extracts were dissolved in sterile water and used for the antimicrobial susceptibility testing.
https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=33&ved=0ahUKEwid07qL4q_JAhUHVSwKHcEHCPI4HhAWCCwwAg&url=http%3A%2F%2Fwww.ajol.info%2Findex.php%2Fajb%2Farticle%2Fdownload%2F71436%2F60381&usg=AFQjCNHbPOtbEvhBkmpxe6eerj2Uz_tWww&sig2=v3KpKQhY9fAsq_TvlNdZlA&cad=rja
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3551117/
Processing, food applications and safety of aloe vera products: a review
Article should be helpful
https://patents.google.com/patent/US7033620B2/en
Above Article should be helpful
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