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

From: Protocol: An updated integrated methodology for analysis of metabolites and enzyme activities of ethylene biosynthesis

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