Developer from Broccoli

tomalophicon said:

Wow, I'm impressed by the high standard of humour on this board.

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I love the name > Stinkinal-P

Alan this is outstanding work! Thanks for posting! My kids LOVE broccoli, they would get a kick out of me developing pictures with the "broccoli water". Great job!! Andy

Mike Wilde said:

Take care where we are going with this. Coffee, broccoli, who knows what is next.

Read Haist. Apparently human urine can be a viable developer. If we go this way, then we will have to specify what the urine producer was drinking and eating in the three hours prior to voiding to generate the feed stock to standardize on development times.

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Oh, this is way too easy!

Eat a plate full of broccoli, take a couple of vitamin-C tablets, pop two Tylenol, wash it all down with a half a cup of coffee, go take a leak then develop your film.

Actually, asparagus and onions are not very good for this. They make foggy developers.



PE

Worker 11811 said:

Oh, this is way too easy!

Eat a plate full of broccoli, take a couple of vitamin-C tablets, pop two Tylenol, wash it all down with a half a cup of coffee, go take a leak then develop your film.

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Perfect!

I plan to boil the oak leaves that fell in my backyard this fall and then...
Wait a minute, that sounds like Pyro...

Maybe you need to add salt to the broccoli?

Photo Engineer said:

Actually, asparagus and onions are not very good for this. They make foggy developers.



PE

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That's not all they make foggy

"I tried to extract the phenols from Broccoli by heating 200g Broccoli in 1% sodium carbonate (anh) solution at 100C for 15min with stirring."

Wow - I bet that smelled awful...

I guess you need to try 400g next time.

Good experiment - keep it up!

mts said:

Maybe you need to add salt to the broccoli?

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Just to let you know; the addition of salt to water decreases the solubility if phenolics. But salt is added to some developers to give finer grain.

Phenolics dissolve very well in alcohols. Perhaps a little broccoli and Everclear in a blender?

Extract broccoli using a Soxhlet Extractor. You can concentrate the phenolics in very little solvent that way.

PE

For the non-chemists here is some info about extractions and purifications.
http://whale.wheelock.edu/bwcontaminants/analysis.html

When I was in grad school we would sometimes brew coffee in the Soxhlet extractor. It did a good job.

How about a molecular still. You can really concentrate volatile oils that way. (BTW, the Molecular Still was invented at EK)

PE

I looked some up on the internets, I guessing one of those is pretty expensive, no?

greybeard said:

Hmmmmm. I wonder if Broccoli extract affects the green sensitivity of the emulsion....?

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Only if the Broccoli was grown using artificial fertilizer

All glassware of this nature is very very expensive.

If you break one, it is better to take a glass blowing course and then try to repair it rather than buy a new one! I did that and fixed a few of my lab pieces. But, OTOH, the fix often does not last due to stress.

PE

ascorbic acid effect

http://en.wikipedia.org/wiki/Vitamin_C
My 200g Broccoli contained ~ 90mg x 2 = 0.18g ascorbic acid.

PP-2 (no Broccoli in this)
Ascorbic Acid.........................0.18g
Sodium Carbonate anh 1%.......600ml
This was heated to 100C for 15min with stirring, then cooled
Phenidone in isopropyl alcohol....0.1g

The idea was to see if the heating decomposes ascorbic acid.
Tri-X EI=200 was developed in PP-2 30m 20C ag 10s/min.
The negatives were thinner than those from the Broccoli extract PP-1 but still printable.
Hence ascorbic acid does contribute to the development and may even cause all the regeneration of phenidone in the Broccoli extract PP-1.

I am sorry I have not been able to cast more light on how the Broccoli extract PP-1 works but it appears that if one starts with a plant that contains ascorbic acid it is going to be difficult to determine the effect, if any, of plant phenol.
Thanks to the poster who pointed out the possible effect of ascorbic acid.

In another experiment, Broccoli extract without phenidone (PP-3) was prepared by heating 200g Broccoli at 100C in 1% sodium carbonate anh solution with stirring for 15 min ,filtering and making up to 600ml.
Tri-X EI=200 was developed in PP-3 40m 20C ag 10s/min.
The result was a blank film with some fog.
The Broccoli extract did not work without the phenidone.

I agree with the post #18, the activity of the Broccoli extract PP-1 is pretty low.
Green tea, for example, might be more active.
Caffenol is well investigated.

Only if the Broccoli was grown using artificial fertilizer

Touche'

Alan Johnson said:

Many plant chemicals contain phenolic groups (as do hydroquinone,pyrogallol,pyrocatechol).I tried to extract the phenols from Broccoli by heating 200g Broccoli in 1% sodium carbonate (anh) solution at 100C for 15min with stirring.After filtering this Broccoli extract I added some Phenidone dissolved in isopropyl alcohol.

PP-1 developer:
Extract of 200g Broccoli
Phenidone .................0.1g
Sodium Carbonate 1% to 600ml.

I checked that phenidone alone was not doing the developing by developing old APX 400 30m 20C ag 10s/min in PP-1 without the Broccoli extract.The negatives were very thin and flat.
For the test, APX 400 at EI=200 was developed in PP-1 30m 20C ag10s/min.
The negatives were slightly underdeveloped but otherwise good.The attachments show the full negative and a 0.2in square section.

To see if there was any tanning I bleached the negs in 100g/L ferricyanide/bromide and fixed them.No relief image or tanning could be seen.
This surprised me as I expected plant phenols to be like hydroquinone,pyrogallol, pyrocatechol and tan the negatives.The only explanation I can find is that the oxidation products of Broccoli phenols are not very stable and do not spread through the gelatin (Photographic Processing Chemistry, LFA Mason 1975 p172).Of course all this does rely on the assumption that it is the phenols from Broccoli that are involved in the developing.
Thanks for comment.

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Perhaps you could make an Anthotype from Broccoli and then develop it in Broccoli solution!

Someonenameddavid said:

human urine developer...... Urinal

David

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there is a guy on flickr who currently does this...

i'm sticking to coffee for the moment ...

How about Popeyenol, based on spinach? That would be a great name for a push developer.

Possible Olive Oyle as a developer too?