Conference non-human agents, art laboratory Berlin (2017)
Ted Talk - How Bacteria Talk:
Bacterial dyes in Fashion:
Janthinobacterium lividum (Indigo):
Streptomyces coelicolor (blue):
Bacteria and Art:
Living Color: Bacterial Pigments
Streptomyces coelicolor, faber futures
Streptomyces have a life cycle similar to that of fungi. The cycle starts with growth of vegetative mycelium from a spore, followed by ariel mycelium, and, then, spores.
Faber Futures - textile dyeing with bacteria
Bacteria are everywhere.They create living pieces of art, e.g. the Rock Paintings : bacteria keep their colors alive.
Pieces of art where the bacteria MAKE the piece (the design, the colors, the structure).
This can be induced/controlled/manipulated via nutrition and monitoring of temperature/humidity conditions. Many bacteria and Lichens get their food from the air, and following they create:
- Reflection, light dispersion
- Luster, absorption, grating, polarisation
- Patterns, changing colours (mix different strains of bacteria to become different colours)
- Patterns will differ relating to different matrixes, variable growth medium
- Chromatics, optics
- The study of materials
Cyanobacteria are the beginning of life. They are oxygen producing.
Bioplastics with bacteria:
- With seaweed /agar agar (as a substitute for gelatine)
LB Medium (250ml gedemineraliseerd water; 8,75gr LB powder; 5gr glycerine; mengen en autoclaveren).
Optimum growing conditions for Janthinobacterium: 25°C.
Glycerine is enhancing the growth of Janthinobacterium; Glucose is inhibiting the growth.
Bacteria on sterilized cellulose skin (grote petri-schalen): 1ste poging (met gesterelizeerde skins) is mislukt - kan ook liggen aan slecht groeimedium. 2de poging (LB met glycerine en nieuwe inoculatie van bacteria) is in wording.
Nieuwe test met kleine petri schalen en kleine stukken cellulose skin: teststukjes cellulose skin zo 'steriel' mogelijk gemaakt zonder ze te autoclaven (heet water, houden boven stoom). Meeste vocht uit de skin laten opdrogen. Daarna de skins goed bevochtigen met LB medium mét glycerine, en inoculeren met Janthinobacterium lividum.
In the past (2017) I was succesfully growing colonies of Lactobacillus plantarum on cellulose skin drenched with LB medium. The biofilm with these bacteria was then used as a pollution sensor in the project Intelligent Guerilla Beehive, see the researchpage grow your own beehive.
Growing now Janthinobacterium lividum in the incubator, I wanted to research if this violet-blue bacteria will also thrive on microbial-skin-with-food.
While growing the J.lividum bacteria in the petri's I found already out that they need some drops of glycerol to produce their blue color. So I made some LB growth medium with glycerol and poured it on the samples in the petris dishes, and I inoculated the 2 samples of fresh microbial skin with the J.lividum bacteria. After 2 days I saw yet a blu-ish shine on the wet white skin. I took them out of the incubator and poured some more medium. In one of the samples I injected some medium with a seringue and needle (photo 8). The next day I saw a development inside the skin-sample, but it was not clear if this was the bacteria multiplying or if it was mold. The next days it became clear that it was mold. Probably the needle was not completely sterile when I did the injection. The first sample became more and more blue, and under the microscope it was clear that the colony propagated themselves over the skin. The problem is that they constantly need food (LB) to keep them alive.
The experiment was to try to color a full-sized cellulose skin with Janthinobacterium lividum. Therefore I put the wet skin in large glass petridishes and I sterilized them in an autoclave bag. When I took the skins out, they were smelling strange - I think that the temp. of 121°C is too high for a microbial skin. I inoculated them with the bacteria, and put enough LB medium as food and put the petri's in the incubator.
After a few days there was no action - no blue shine, no growth, nothing.
I found out that the Janthinob.lividum do not grow well if there is no glycerol added to the LB (similar for growing the bacteria in a petri dish, glycerol had to be added to the agar nutrient). I made new LB medium with glycerol and I drenched the 2 skins in the medium (in the petri), with the help of a plastic Pasteur-pipette. The pipette was not sterilised, and after a few days mold started to grow on the skins and in the petri. End of the experiment.
Experiment to color white cotton fabric with Janthinob.lividum bacteria. I sterelized the cotton in the autoclave, in aluminium paper. Than the fabric was drenched with LB medium (with glycerol) and inoculated with bacteria in a sterile setup. After 1à 2 days the bacteria were spreading over the cotton and after 2 days the cotton sample was completely dark blue. The result is a nice blue drawing made by the bacteria on the fabric - the drawing can a little bit be controlled due to the origami folding of the fabric.
Nutrient Agar (NA) : Suitable for growing a wide range of bacteria none selectively
Compound Amount Unit
Yeast extract 2.0 g
Peptone 5.0 g
NaCl 5.0 g
Agar 15.0 g
Demi water up to 1000 mL
Set pH ~4.7
Please note: peptone is very dusty, so try not to inhale it. Peptone can be found on eBay. Yeast extract is often sold as pills in drugstores Peptone can be replaced by any peptic digest of animal tissue Yeast extract can be replaced by beef extract