재배 시 brushing 처리에 따른 어린잎 채소 다채의 생육과 수확 후 선도 차이
Growth and Postharvest Freshness of Tah Tasai Chinese Cabbage (Brassica campestris var. narinosa) Baby Leaf Vegetable as Affected by Brushing Treatment during Cultivation
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초록
새싹이나 어린잎과 같이 싹을 길러 이용할 수 있는 채소에 대한 관심이 커지고 있으나, 조직이 연해 수확 후 급격히 품질이 저하되어, 품질을 유지할 수 있도록 수확 전 재배에서부터 개선방법을 강구하고자 하였다. 본 실험에서는 다채의 어린잎 채소를 재배 중에 brushing처리를 주어 생육 및 재배 후 포장하여, 중량감소, 선도와 SPAD 등의 수확 전 요인에 따른 수확 후 변화 요인을 조사하였다. 수확 시 다채의 생육은 무처리구에 비해 물리적 brushing처리구에서 초장이나 생체중은 적었으나, 조직이 치밀한 것으로 나타났다. 재배 중 brushing처리한 어린 다채 잎은 저장 중 생체중량 변화, O2 소모나 CO2 축적 정도, 색차 변화가 적은 경향을 보였다. 그러나 SPAD값이나 선도에서는 처리간의 큰 차이를 보이지 않았다. 어린 다채 잎은 재배 중 물리적 brushing처리로 식물 조직이 치밀해지고, 생육은 적어졌으나, 포장 후 저장 특성은 다소 차이가 있었으나, 선도에는 큰 차이를 보이지 않은 것으로 나타났다. 어린잎 채소 다채는 재배 중 brushing처리에 의한 물리적 처리가 수확 후 미치는 영향이 크지 않아, 다른 방법으로 품질을 개선할 수 있는 연구가 필요할 것으로 생각된다.
Abstract
An experiment was conducted to find out the effect of brushing treatment during cultivation on the postharvest quality of the baby leaf vegetable, specifically tah tasai Chinese cabbage (Brassica campestris var. narinosa). The effect of mechanical brushing during cultivation on the postharvest quality was determined in terms of the quality changes in weight loss, gas partial pressure, leaf color, and appearance during storage using a 30-㎛-thick polypropylene film at 16℃. The brushing treatment included brushing with A4 paper back and forth 50 times a day. The study revealed that the growths on the brushing-treated plant group were less than those on the control group. The structure of the leaf tissue of the brushing-treated plant also tended to be less compact than that of the non-treated plant. The brushing treatment resulted in less growth and denser plant tissues as well as in differences in the gas O2 consumption and CO2 accumulation after packaging. For the gas partial pressure, the O2 consumption and CO2 accumulation of the brushing-treated plant tended to be less than those of the non-treated plant. There were no differences, however, between the brushing-treated plant and control groups in the SPAD value and appearance. The study results also suggested that after packaging, the effects of the brushing treatment during cultivation on the quality of the tah tasai Chinese cabbage baby leaf vegetable was not significant. As such, it is recommended that effective post-harvest methods of improving the product quality of the baby leaf vegetable be further investigated.
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