• Title/Summary/Keyword: Preservation of Food

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Effect of Water Extract from Saururus Chinensis (Lour.) Bail Water Extracts on the Cancer Cells and Antioxidative Activity in Cytotoxicity (삼백초(Saururus Chinensis (Lour.) Bail) 열추출물의 항암 및 세포독성 저해 효과)

  • 이인선
    • Food Science and Preservation
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    • v.8 no.2
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    • pp.213-216
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    • 2001
  • Chemoprevetive effect of Saururus Chinensis (Lour.) Bail water extract on several tumor cells and Chinese hamster V79 cells were investigated. The water extracts of Saururus Chinensis (Lour.) Bail showed a higher cytotoxicity effect on the human histiocytic leukemia cells(U937) and protective effects against the cytotoxicity of H$_2$O$_2$. These results suggest that Saururus Chinensis (Lour.) Bail may useful as potential soures of chemopreventive and antioxidative agents.

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Development of an Environmental Control System for Agricultural Storage Facility (상온저장 시설의 환경 제어 시스템 개발)

  • 임종환;현명택
    • Food Science and Preservation
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    • v.4 no.2
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    • pp.101-113
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    • 1997
  • Temperature, relative humidity and ventilation are closely related one another, and they are the main factors to be controlled for the environmental control system of a storage facility. Conventional environmental control systems do not consider the interrelationship between temperature, relative humidity and ventilation, which results in low performance and high energy consumption. To overcome the inefficiency of the conventional ones, it was developed an on-off control system based on the interrelationship between the factors. The usefulness of the system was illustrated with the results produced by a set of experiments in a real world.

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A Study on the Quality of Liner Board Used Corrugated Fiberboard Container of Apples (사과포장용 골판지 라이너원지의 품질에 관한 연구)

  • 하영선;김수일
    • Food Science and Preservation
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    • v.5 no.2
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    • pp.150-153
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    • 1998
  • As strait As a result of the quality research of liner boards used for the national-made corrugated boxes for apples, basis weight of each sample passed its tolerance within 4%. We found that KA, WLK, and SC liner boards showed better in relative bursting strength. SC, WLK, KA, and SK performed better in relative compression strength. WLK201 and KA210 were good for the outside liner, and K2200 was adequate for medium and inside liner. we classified WLK and KA liner boards as A grade and others as C grade.

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CA Storage for Ginger Depending on CO2 Concentrations (탄산가스 농도에 따른 생강의 CA 저장효과)

  • 정문철;이세은
    • Food Science and Preservation
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    • v.5 no.2
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    • pp.133-137
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    • 1998
  • In order to establish effectiveness of CA storage and adequate CO2 concentration, it was investigated the quality chanties of Singer during CA storage for 150 days at different CO2 concentrations ranging from 3% to 12% and 3% fixed oxygen concentration. Weight loss tend to decrease with increase of CO2 concentrations. Sprouting ratio and the loss of gingerol was shown to be less as CO2 concentration increase but to be more than control stored at 12$^{\circ}C$, 95% RH within the concentration less than 6% CO2.

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Changes of Microorganism during the Storage of Spices as Affected by Irradiation (방사선 조사한 향신료의 저장중 미생물 변화)

  • 이병우;김형찬
    • Food Science and Preservation
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    • v.2 no.1
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    • pp.203-207
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    • 1995
  • Spices(Tumeric, Celery-seed, Cumin, Black pepper, Coriander) were irradiated at dose levels of 0, 5, 7 and 9kGy using Co60 source and stored at room temperature. After 12 months of storage following 9kGy irradiated spice, total aerobic bacteria were significantly decreased. When the irradiation dose was 7kGy, microbial levels showed l02-103 levels. However, total lactic acid bacteria and E-coli were shown negative at below 5kGy.

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An Analysis of Thermal Convection in Agricultural-Products Storge System (농산물 저장 시설에서의 열대류 현상의 해석)

  • Kim, Min-Chan;Hyeon, Myeong-Taek;Go, Jeong-Sam
    • Food Science and Preservation
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    • v.4 no.1
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    • pp.27-32
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    • 1997
  • Natural convection in agricultural-products storage system was analysed theoretically, The storage system was modelled by Internally heated fluid saturated porous layer. Darcy's law was used to explain characteristics of fluid motion. Stability equations were obtained under the linear stability theory and transfer characteristics were modelled by the shape assumption. Based on the modelling of transfer characteristics, heat trasnfer correlations were derived theoretically.

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Enzymatic preparation and antioxidant activities of protein hydrolysates from hemp (Cannabis sativa L.) seeds

  • Hyeon-Ji Yoon;Gyu-Hyeon Park;Yu-Rim Lee;Jeong-Min Lee;Hyun-Lim Ahn;Syng-Ook Lee
    • Food Science and Preservation
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    • v.30 no.3
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    • pp.434-445
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    • 2023
  • Hemp (Cannabis sativa L.) seeds have recently been attracting attention as a new high-value-added food material owing to their excellent nutritional properties, and research on the development of functional food materials using hemp seeds is actively progressing. This study aimed to evaluate the antioxidant properties of hemp seed protein hydrolysates. Protein hydrolysates were prepared from defatted hemp seed powder (HS) by enzymatic hydrolysis using five different proteases (alcalase, bromelain, flavourzyme, neutrase, and papain). 2,4,6-trinitrobenzene sulfonic acid (TNBS) assay and SDS-PAGE analysis revealed that HS showed a high degree of hydrolysis after treatment with each enzyme except papain. The total polyphenol content of the protein hydrolysates (<3 kDa) and the RC50 values obtained from two different antioxidant tests showed that alcalase hydrolysate (HSA) had a relatively high level of antioxidant capacity. In addition, treatment with HSA (25-100 ㎍/mL) significantly inhibited linoleic acid peroxidation. These results suggest that hemp seed protein hydrolysates are potential sources of natural antioxidants. Future studies will focus on the identification of active peptides from HSA.

새싹채소의 HACCP 관리계획 개발

  • Lee, Yeon-Kyung
    • Food preservation and processing industry
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    • v.8 no.1
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    • pp.19-25
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    • 2009
  • 신선편이 식품의 수요가 증가되고 있는 시점에서 웰빙식품으로 다소비되고 있는 새싹채소의 안전성 확보가 시급히 추진될 필요가 있다. 따라서 본 연구에서는 새싹채소의 위생적 생산을 위한 HACCP 관리계획을 개발하고 생산현장에서 적합성 검증을 실시하였다. 위생적 안전한 새싹채소 재배를 위해서는 새싹종자 소독(Ca(OCl)2 20,000ppm 농도에서 15분간 처리 또는 $70^{\circ}C$ 이상에서 1분 이상 열수처리)을 통한 1차적 관리와 재배기간 동안의 미생물 증식을 억제시키기 위한 재배수 관리(HClO 100 ppm, pH 3이하의 전해산화수)를 통한 2차적 위생관리 등 단계적 위생관리의 적용이 권장된다.

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