Bio-Film

AGAR AS A FILM BASE. MILK AS AN EMULSION ON TOP OF THE FILM BASE AND THEN BACTERIA GROWN ON TOP OF THE MILK EMULSION AS A BIO-FILM

The example images below mix and question what is a film base and what is an emulsion?

In the images below there are four layers: 1. The plastic base of the petri dish 2. The potato-dextrose agar (emulsion) that sits on the plastic (film) base of the petri dish 3. The milk (emulsion) that sits on the potato-dextrose agar (gelatine) 4. The bacterial bio-film that grows (as a film) on the milk (emulsion).

Each of the four layers consists of a polymer based material. Being a polymer material each layer shows similarities and differences to the other layers.

15/09/2018

Materials Initially Used

Petri Dish
Three drops from a pipette of Morrisons Semi-skimmed milk.
Potato Dextrose Agar (PDA)

Day 1 – after setting up

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After 1 Week

After 2 and a half weeks

After 1 month

After 3 months

Bacterial cellulose film produced by the bacteria Acetobacter xylinum and partly directed by James Snazell.

The screening and growth of this film occurred between Sept 30th – 21st Oct 2018. And then shown as part of the ‘Interim’ Mres exhibition at University of Westminster. See link ‘The Memory of Materiality’ for this work and to the images at the bottom of this stream.

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