RESPIRATION MEASUREMENT OF SOME IMPORTANT FRUITS IN TAIWAN
Typical climacteric pattern occurred at 20°C for sugar apple, guava, pear, mango and persimmon. Sugar apple exhibited a maximum respiration rate higher than 200 mg CO2/Kg.h at 20°C, while maximum ethylene production rate was lower than 1.0 ul/Kg.h. Guava had a maximum respiration rate of 130 mg CO2/Kg.h and ethylene production of 2–3 ul/Kg.h at 20°C. The rise of respiration rate of Herng-San pear was slow (25–30 mg CO2/Kg.h at maximum) in contrast to the rapid change of ethylene evolution (10 ul/Kg.h at peak). Mango of Keitt variety had a maximum respiration rate of 60 mg/Kg.h. Persimmon fruits treated with 0.2ml of 4N KOH solution exhibited a climacteric rise much earlier than those ripened naturally. The climacteric peak value was about 30 mg CO2/Kg.h at 20°C. For both mango and persimmon, only trace amount of ethylene was detected during the experiment.