บทคัดย่องานวิจัย

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Optimum conditions of low light irradiation-CA storage for preservation of the visual quality of postharvest whole chervil (Anthriscus celefolium L.).

Fujiwara, K.; Takaku, K.; Iimoto, M.;

Environment Control in Biology Year: 1999 Vol: 37 Issue: 3 Pages: 203-210 Ref: 14 ref.

1999

บทคัดย่อ

Optimum conditions of low light irradiation-CA storage for preservation of the visual quality of postharvest whole chervil (Anthriscus celefolium L.).

A. cerefolium harvested commercially was placed in a plastic container at 5 deg C under different CO2 concentrations (0.05, 0.5 or 1%) and PPFDs (photosynthetic photon flux densities of 0-2 micro mol m-2 s-1) to determine CO2 exchange rate at an atmospheric O2 concentration of 20%. CO2 exchange rate was calculated from the difference between CO2 concentration of outflow and inflow air (flow rate: 4.8 litre/h) through the plastic container. The CO2 exchange rate decreased with increasing CO2 concentration or increasing PPFD. Relationship of CO2 concentration and PPFD where the CO2 exchange rate became 0 was obtained by drawing a 3-dimensional (CO2 concentration, PPFD and CO2 exchange rate) graph. Three combinations of CO2 concentration and PPFD (0.05% + 1.6, 0.5% + 0.5 and 1% CO2 + 0.2 micro mol m-2 s-1) were selected to determine their effects on quality of A. cerefolium stored at 5 deg C, 20% O2 for 27 days, compared with a control (0.04% CO2 + 0 micro mol m-2 s-1 PPFD). There were significant

differences in colour between treatments after storage, with the best colour observed in the 0.5% CO2 + 0.5 micro mol m-2 s-1 PPFD treatment. Visual quality was maintained for <6, 12, 24 and 15 days in the control, 0.05% + 1.6, 0.5% + 0.5 and 1% CO2 + 0.2 micro mol m-2 s-1 PPFD treatments, respectively.