Table 1 Overview of the expected range for unripe and ripe apple and tomato fruit

Unripe

Ripe

Unripe

Ripe

Ethylene production rate (nmol/kg.s)

0.0001

1.228

0.0014

0.0361

ACS activity (nmol ACC/kg.s)

< 0.004

1.069

0.004

0.017

ACC (nmol/g)

0.08

1.19

0.05

2.55

MACC (nmol/g)

1.32

35.77

1.00

20.00

ACO activity (nmol C₂H₄/kg.s)

0.032

1.191

0.222

0.889