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Abiodun Samuel Afolabi,In-Lee Choi,Joo Hwan Lee,Kwon Yong Beom,Ho-Min Kang 한국포장학회 2022 한국포장학회지 Vol.28 No.1
This study compared the effects of cocopeat and perlite growth media on the storability and quality of sweet pepper fruit stored using modified atmosphere packages (MAP) and carton boxes. The fruits were stored at 8oC for 35 and 30 days, respectively. Perlite-grown fruits had a significantly lower size at harvest due to the medium’s inability to hold plenty of water during the growing stage. Contrary to what is expected for small fruits, the result shows box-stored perlite-grown fruits to have lower weight loss and a longer shelf life than cocopeat-grown fruits, while MAP fruits have indifference. Perlite fruits also had a higher quality in terms of dry matter, soluble solids, and vitamin C, while box-stored fruits had a better visual quality. As expected, respiration and ethylene production rates were high, and fruits had similar after-storage firmness values. Based on the findings, perlite-grown sweet pepper fruits may have a better quality and give preference in a box storage condition.
Quantum dot LED (QD-LED)와 White-LED 보광에 따른 방울토마토 과실의 품질, 수확량 및 경제성 비교
이주환 ( Joo Hwan Lee ),최담희 ( Dam Hee Choi ),노유한 ( Yoo Han Roh ),권용범 ( Yong Beom Kwon ),아포라비아비오둔사무엘 ( Abiodun Samuel Afolabi ),최인이 ( In-lee Choi ),김용득 ( Yongduk Kim ),신정철 ( Jung Chul Shin ),김민하 ( Minha K 강원대학교 농업생명과학연구원 2022 강원 농업생명환경연구 Vol.34 No.0
본 연구는 햇빛을 대조구로 설정하고 White 및 QD-LED를 이용하여 방울토마토의 군락 위 보광을 하였으며, 과실의 수확량 및 내·외적 품질변화에 대해 알아보고 경제적이며 효과적인 광원을 선발하기 위해 수행하였다. 인공광원을 통한 보광은 대조구보다 평균 45.4% 광도를 높였으며 Fv/Fm은 9.2% 증가했다. 광도 변화와 함께 광원의 광질에 따라서도 차이를 보였는데, QD-LED에서 가장 높은 a*/b*값으로 White-LED 및 대조구보다 변색기의 진행이 빨라 숙기가 가장 많이 단축됨을 알 수 있었다. 또한 과장, 과폭, 과실수, 과방무게에서 보광처리구가 대조구보다 높은 값을 보였으며, 그 중 QD-LED가 결과값이 가장 높았다. 당도는 같은 기간 내 성숙이 가장 빨랐던 QD-LED가 가장 높았고 산도 및 경도는 가장 낮았다. DPPH 라디컬 소거능과 Ascorbic acid는 보광처리가 대조구보다 높은 값을 보였고 보광처리구에서는 QD-LED가 White-LED보다 더 좋은 효과를 나타냈으며, 기형과 발생률도 QD-LED에서 가장 낮았다. 두 광원의 경제적인 측면을 고려할 때 QD-LED는 White-LED에 비해 상대적으로 전력 소비가 적고 비용이 저렴하며 에너지 사용 효율이 훨씬 높았다. 이 모든 요소를 종합하면 방울토마토의 군락 위에 대한 보광은 효과적이며 광원으로는 QD-LED를 사용하는 것이 가장 적합하다고 판단된다. This study was conducted to investigate the yield of fruits and changes in internal and external quality, and to select an economical and effective light source. Sunlight was set as a control, and lights were supplemented on the upper canopy of cherry tomatoes (Solanum lycopersicum var. cerasiforme) using white and QD-LED. The supplemental light through the artificial light source increased the light intensity by 45.4% on average compared to the control, and the Fv/Fm increased by 9.2%. There was a difference in light quality as well as a change in light intensity, and it was found that the QD-LED with the highest a*/b* value progressed faster at the breaking stage and the maturation period was greatly shortened compared to that of White-LED and the control. The supplemental lighting treated group showed higher values than the control group for length, width, number of fruit, and weight of cluster, and among them, QD-LED showed the highest value. The QD-LED, which matured tomatoes the fastest within the same period, resulted in the highest soluble solids and the lowest titratable acidity and firmness. For DPPH radical scavenging activity and ascorbic acid, the supplemental lighting treatment showed higher values than the control group, and QD-LED showed better effects than White-LED in the supplemental lighting treatment. Additionally, the malformed fruit incidence rates were the lowest in QD-LED. Considering the economical aspect of both light sources, the QD-LED showed a relatively lower electrical power consumption, lower cost, and a much higher energy use efficiency than White-LED. We conclude that supplemental lightning on the upper canopy of cherry tomatoes is effective and QD-LED is the most suitable for use.