ISHS Acta Horticulturae 138: Postharvest Physiology and Storage, XXI IHC
RESPIRATION MEASUREMENT OF SOME IMPORTANT FRUITS IN TAIWAN |
| Authors: | M.L. Liao, M.S. Liu, J.S. Yang |
| Abstract:
Among the non-climacteric fruits, carambola, wax apple and pineapple were found to have a very low respiration rate of 10–20 mg CO2/Kg.h at 20°C, although they are highly perishable fruits. Loquat had a respiration rate of 30–40 mg CO2/Kg.h. Without any preformed injuries, the sound fruits showed a good keeping quality at 2–5°C. Lychee, longan and Indian jujube are the three fruits with much higher respiration rate (60–80 mg CO2/Kg.h), therefore, their short storage life are predicted. All the six citrus spp. harvested at mature-green stage respired at a low rate (10–20 mg CO2/Kg.h) and produced essentially no detectable ethylene. 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. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
