Abstract
Effects of light irradiation, water-supply and storage temperature on quality and nitrate nitrogen concentration in Komatsuna (Brassica campestris L.) plants were evaluated during film packaging (FP) storage. Plants were stored in FP with low-temperature (7-14°C), lighting (PPFD 2.85-4.56 μmol·m−2·s−1) and water-supply. The fresh weights of plants may be increased because transpiration was suppressed by FP and water was continually absorbed from roots. Leaf color did not fade because chloroplasts were synthesized by light irradiation. In addition, nitrate nitrogen concentration in plants was reduced by about 36%, when plants were stored for 4 days at 14°C. It seemed that the decrease is caused by an increase in nitrate metabolism in the results of photosynthesis, chloroplast, respiration, and so on. Thus the quality of Komatsuna plants could be maintained during storage in film packaging under low-temperature (14°C), with lighting and water-supply, and the nitrate nitrogen concentration could also be reduced.
