Table 1.

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

	Apple		Tomato
	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

All values are an average of 8 repetitions of fruits of the same ripening stage.