Author Topic: Turmeric extract as reducing and stabilizing agent  (Read 2455 times)

Offline PeterXXL

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Turmeric extract as reducing and stabilizing agent
« on: December 18, 2015, 11:47:59 AM »
I recently made extract on turmeric powder, using 50 gram of organic turmeric root powder and 100 ml 95% pure ethanol. Had it in a glass bottle for a few days and shaked it several times every day, finally filtered it through a coffe filter and got about 50 ml extract.

I then tested it to see how good it's as a reducing and stabilizing agent...

- 250 ml deionozed water in a 250 ml beaker on a magnetic stirrer with heating.
- Added enough of 1-mol sodium carbonate solution to raise the pH to between 8.5 and 9.
- Heated til near boiling (~90 degree C).
- Added 0.25 ml of the Turmeric Root Extract.
- Added, drop by drop, 10 ml of my previously made silver nitrate solution (each ml contains enough of silver nitrate to be reduced to 10 mg silver).
- Let it contiinue to stir with heating for about 15 minutes.

The result is a very dark brown and clear solution of 400 ppm (100 mg)

Took 1 ml of it + 19 ml deionized water to make 20 ml of 20 ppm colloidal silver. The picture can be seen below.

So Turmeric Root seem to be a very potent reducing and stabilizing agent.

http://imgur.com/0fn9p0F

Nice yellow and clear.

I will also test it with elektrolysis

Offline PeterXXL

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #1 on: December 18, 2015, 12:55:31 PM »
Update.

When the 250 ml 400 ppm solution had cooled off, I noticed small shining flares of silver floating on top of the solution. So maybe 0.25 ml of the Turmeric Rooot Extract was too little, or this extract only work well as reducing agent but not as good as stabilizing agent.

I will make another test and use 1.0 ml of this extract and also test it with capping agents like gelatin and lecithin.

Offline reiyel2012

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #2 on: December 18, 2015, 11:26:38 PM »
I use cloves extract as reducing agent. 50g in 100ml of mix vodka/distilled water.  I use 1 drop per 10mg of colloidal silver when I made a batch. After 6 month of storage, I see the colloidal silver are more light than when I made a batch. My last batch I add gelatin to see reaction for the long time storage.

This is a link about different polyphenol source

http://www.cgcsforum.org/index.php?topic=2092.0

Offline kephra

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #3 on: December 18, 2015, 11:38:28 PM »
After years of making colloidal silver, I have found nothing better than plain corn syrup or corn syrup plus gelatin for making colloidal silver.  I have colloidal silver made with either that is years old, and hasn't changed at all.  Samples I made with polyphenols did not stand the test of time as well as corn syrup or gelatin.
There is the unknown and the unknowable.  It's a wise man who knows the difference.

Offline reiyel2012

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #4 on: December 19, 2015, 01:08:47 AM »
Kephra you confirm what I think, polyphenol ( like my clove extract ) it's OK for short time storage ! :-)

The time tell me what append at my last batch of clove extract with gelatin,... I must wait 6 month to know the answer ! lol

SanchoPanza

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #5 on: December 21, 2015, 07:18:49 PM »
I have also seen long term failures using Cinnamon and other poly-phenols.
The sugars perform better, but I would like to find a reducer that can work at neutral pH.
Still searching...

-Sancho

Offline kephra

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #6 on: December 21, 2015, 09:07:18 PM »
I have also seen long term failures using Cinnamon and other poly-phenols.
The sugars perform better, but I would like to find a reducer that can work at neutral pH.
Still searching...

-Sancho
Why do you want neutral pH?  That would mean giving up plateout protection and much longer process times.  What would be the gain?
There is the unknown and the unknowable.  It's a wise man who knows the difference.

SanchoPanza

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #7 on: December 22, 2015, 04:38:59 AM »
My Sinuses say pH 7ish feels better.
I've been adding a drop of lemon juice after reducing the colloidal silver, as it's effective as a nasal spray, but I'm not happy doing it that way.
I'd rather find a reducer that works with a lower pH.
Is there an equation for the amount lost to plating, at lower pH?
Weighing it, is proving rather difficult...  ;)

-Sancho

Offline kephra

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #8 on: December 22, 2015, 12:35:27 PM »
Unfortunately, there is no formula for finding the amount of silver lost to plating.
There is the unknown and the unknowable.  It's a wise man who knows the difference.

SanchoPanza

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Re: Turmeric extract as reducing and stabilizing agent
« Reply #9 on: December 23, 2015, 12:29:59 PM »
I was afraid of that. Too many variables to consider.
Thanks.


-Sancho.