Autochrome Patent Blue V Production
I am sure , if you want to produce your original Autochrome , biggest drawback is cost of
Patent Blue V other name Food Blue V ,
CAS NO 3536-49-0
EINECS NO. 222-573-8
cyclohexa- 2,5-dien-1-ylidene]diethylammonium], calcium salt (2:1).
Its supplier is Sigma and 25mg costs 85 dollars. Autochrome Recipe -search for it , its inside of APUG archive - requires 25 grams. Cost is 85000 dollars.
I asked to myself , why it is so expensive , I think I found an answer but I am not sure. It can be a product of marine life and these microorganisms kept growing and than the dye removed. I read that its a very low yield and not for mass production.
I am interested in biology for a long time and I know bacteriorhodopsin have a common way of production and high school students grow them at their school lab for mixing with plastic and read and write in a mass with crossed beams.
I found a patent and Germans had had invented a new bactery and yield rate increased 16 times.
Microbiological method of the biosynthesis of natural blue-violet colorants ...
Tjhing-Lok Tan et al
Patent number: 7901914
Filing date: Dec 20, 2001
Issue date: Mar 8, 2011
Application number: 10/451,518
You can reach it via google patents.
I will write more later.
Mustafa Umut Sarac