• Title/Summary/Keyword: Postharvest technology

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Effect of Postharvest Treatments on Storage Quality of Buckwheat Sprouts (메밀 새싹채소의 저장품질에 대한 수확 후 처리공정 효과)

  • Lee, Hyun-Hee;Hong, Seok-In;Kim, Dong-Man
    • Korean Journal of Food Science and Technology
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    • v.43 no.1
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    • pp.98-104
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    • 2011

  • The storage quality of fresh buckwheat sprouts, as influenced by pretreatment and packaging within processing steps, was investigated to establish appropriate postharvest handling treatment for the commodity. After harvest, the sprouts were dipped in chlorine water (100 ppm), rinsed twice with clean water, pre-cooled with iced water, de-watered, and packed in plastic trays. Sprout samples taken from each processing step were stored at $5^{\circ}C$ for 6 days to measure quality attributes. Viable cell counts of mesophilic aerobes and coliform bacteria were lower by about 1 log scale in the postharvest treated samples compared to an untreated control, although the initial microbial reduction due to the postharvest treatments was offset by cell growth during storage. All sprout samples showed a decrease of fresh weight by approximately 4% after 6 days of storage. However, moisture and soluble solid contents were maintained at the initial levels of the sprouts. No significant difference in surface color was observed among sample treatments. For sensory properties including discoloration, wilting, decay, and visual quality, there were no significant differences among sample treatments. The present results suggest that proper postharvest processing treatments can exert positive effects on extending the shelf-life of fresh buckwheat sprout.

  • https://doi.org/10.9721/KJFST.2011.43.1.098 인용 PDF KSCI

Ventilation Hole Optimum Design of Smart Unit Load Container for Storage and Distribution Agricultural Products by Theoretical Heat Flow Analysis (이론적 열유동 해석을 이용한 농산물 저장 및 유통 스마트 유닛로드 컨테이너의 통기공 최적화 설계)

  • Dong-Soo, Choi;Yong-Hoon, Kim;Jin-SE, Kim;Chun-Wan, Park;Hyun-Mo, Jung;Ghi-Seok, Kim;Jong-Min, Park
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.28 no.3
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    • pp.211-215
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    • 2022

  • Air distribution occupies an important position in the smart unit load container design process for agricultural products. Inner air may be uncomfortable because of its temperature, speed, direction, and volume flow rate. It doesn't matter how efficient the ventilation equipment is if the air is not distributed well. The main aim of this study was to design the inlet and outlet fan locations of smart unit load container for agricultural products. A numerical study was performed on the effects of the location of inlet air and outlet air in relation to the container cooling sources on air distribution and thermal comfort. A concept of combining inner container cooling sources with the exhaust outlet was employed in this investigation. Also, in this research, the developed CFD (Computational Fluid Dynamics) models were thoroughly validated. This system was adopted for use in container spaces, where the exhaust outlet was located. In this study, the location of the inlet was derived through CFD for a container with a size of 1,100×1,100×1,700 mm, and it was derived that the inlet was located at the center of the lower part of the container for efficient air flow. It was efficient to position the outlet through the air inlet in the center of the lower part of the container at the top of the same side.

  • https://doi.org/10.20909/kopast.2022.28.3.211 인용 PDF KSCI

Study on Temperature Distribution in Cold Storage of Korean Garlic in Wire Mesh Pallet Container Using CFD Analysis (CFD 해석을 이용한 철망 파렛트 컨테이너 적입 마늘의 저온 저장고내 온도 분포 연구)

  • Dong-Soo Choi;Yong-Hoon Kim;Jin-Se Kim;Chun-Wan Park;Hyun-Mo Jung;Jong-Min Park
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.29 no.3
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    • pp.195-201
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    • 2023

  • Garlic (Allium sativum)is a major crop in most Asian countries, and its consumption in Asia-Pacific countries exceeds 90% of the global consumption. It contains beneficial ingredients and numerous essential nutrients, such as manganese, vitamin B6, and vitamin B1. Garlic demand is rising not only in Asian countries but also around the world. Particularly, garlic demand has been steadily increasing in European countries, such as Spain, France, Italy, and the American continent. In South Korea, 331,671 tons and 387,671 tons of garlic was produced in 2018 and 2019, respectively, making the country the fifth ranking garlic producer in the world, and the production has been increasing every year. In this study, the study on temperature distribution in cold storage of Korean garlic in folding wire mesh pallet container using CFD (Computational Fluid Dynamics) analysis was performed and Computations were based a commercial simulation software (ANSYS Workbenh Ver. 18.0). Considering the respiration heat of garlic, the decreasing rate of temperature in the area in contact with the cold air was fast due to the inflow of cold air inside, while the decreasing rate of temperature in the center of the pallet was very low. In order to maintain a uniform temperature distribution inside the agricultural product storage pallet in a low-temperature warehouse, it is considered desirable to install an air passageway to allow low-temperature air to flow into the wire mesh pallet.

  • https://doi.org/10.20909/kopast.2023.29.3.195 인용 PDF