Colour ratio Yellow/Red (BI)

1 month

4 months

5 months

4˚C

Sample1

Sample2

Control

0.62^a

0.59^a

0.62^a

0.63^a

0.63^a

0.63^a

0.63^a

0.62^a

0.65^a

25˚C

Sample1

Sample2

Control

0.6^a

0.63^a

0.64^a

0.79^b

0.77^b

0.81^b

37˚C

Sample1

Sample2

Control

0.72^a

0.72^a

0.77^b

1.03^c

1.03^c

1.02^c

1.05^c

1.04^c

1.14^d