[memetheo]

Hello,

I will be performing biochemical experiments with cinnamon extract (powdered cinnamon extracted with .1N acetic acid, then treated with EtOH and filtered). A paper I read freeze-dried the extract, but I do not have access to a freeze dryer. Do you think I will lose activity of the compounds if I don't freeze dry but keep at 4 degrees?  Thanks

Melanie

[sdekivit]

you'll lose activity in time, but you'll lose some activity after freeze drying as well. The extent of the loss of activity must beevaluated in experiments.

[iks]

What type of activity are you looking for?  I think the main problems you can have with your extract are volatilization and oxidation.  I suggest you keep your extract at a temperature lower than those 4 degrees.  At least go sub-zero.