Colour ratio Bleu/Red (PI)

1 month

4 months

5 months

4˚C

Sample1

Sample2

Control

0.28^a

0.28^a

0.29^a

0.32^b

0.33^b

0.33^b

0.33^b

0.32^b

0.33^b

25˚C

Sample1

Sample2

Control

0.33^b

0.36^a

0.35^ab

0.45^c

0.48^c

0.47^c

37˚C

Sample1

Sample2

Control

0.43^a

0.44^a

0.48^b

0.61^c

0.61^c

0.61^c

0.59^c

0.6^c

0.64^d