• Title/Summary/Keyword: 식물위생

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The Study of antibiotic Enzyme from higher plant (고등식물의 병원균에 대한 항균성을 나타내는 효소(Chitinase와 Glucanase)에 관한 고찰)

  • 홍순강
    • Journal of environmental and Sanitary engineering
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    • v.10 no.2
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    • pp.74-78
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    • 1995
  • Several reports have suggested that these hydrolases( chitlnase, glucanase ) are likely volved in defense reactions in this Plant. In this paper, Induction by ethylene, mechanism, properties and function for Activation of these enzymes were Summarized.

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An Ecological Study on the Vegetation of Dumi Island (두미도 식물상에 관한 생태학적 연구)

  • Lee, Il Koo;Kyu ha Park
    • Journal of environmental and Sanitary engineering
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    • v.5 no.1
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    • pp.34-45
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    • 1990
  • The purpose of this reserch is to investigate the flora of Dumi Island. This island locates at $128^{\circ}$ 13' E. longitude and $34^{\circ}$ 41' N. latitude. As a result of our investigation, the distribution of plants on Dumi Island could be summarized as follows. The vascular plants through this investigation were 66 families, 121 genera, 127 species, 16 varieties, 2 forma, and 145 kinds. From 1945 to 1960, most Pinus densiflora and Quercus mongolica were cut and sent as fuel to the cities of Masan, Chungmu and Samchunpo. After these deforestation years, there was a change of policy in the area and then wood was substituted by coal blacks as fuel and along with this occurs reforestation. Because of the reforestation by the present administration and natural means of suctrees, Castamopsis cuspidata var. thunbergii, Camellia japonica and Machilus japonica; they were found to exist near Sheonangdang in the northern region at Hakli and at Kuchun in the south. In the central part of the island at Mt. Chunhwang there are slopes of 20-30 degrees which are cultivated by the islanders this mountain which can be cultivated and 65% or 830 islanders are farming this land. Although this 125.4 hectors is not a large portion, this mountain with its variety of growth at different elevations, seems to be very fertile causing thick growth at any level.

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Analysis of Pathogenic Microorganism's Contamination and Heavy Metals on Kimchi Cabbage by Cultivation Methods in Korea (재배농법에 따른 국내산 배추의 위해미생물 및 중금속 오염평가)

  • Oh, Soh-Young;Nam, Ki-Woong;Yoon, Deok-Hoon
    • Journal of Food Hygiene and Safety
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    • v.32 no.6
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    • pp.500-506
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    • 2017
  • Kimchi cabbage is one of the four major vegetable crops in Korea. The total annual production of kimchi cabbage, the main material of kimchi, was 20,559 tons in 2015. Kimchi cabbage is one of the majer crops produced by farmers which accounts for about 80% of the total leaf vegetable production in Korea. As the consumption of environmental-friendly agricultural products increases, food safety is one of the major public health concerns. We analyzed the biological hazards of kimchi cabbage produced by two types of cultivation methos such as organic farming and conventional farming using various culture media and microscopy. A total of 432 samples were analysed for presence of sanitary indicator microorganisms (aerobic plate count, coliform count, yeast & mold) and food-borne pathogens (Staphylococcus aureus, environmental Listeria, Bacillus cereus). The population of sanitary indicating microorganisms and food borne pathogens was under 5 Log CFU/g in all tested samples. The results of total microorganism numbers of leaf surface showed a positive correlation to those of soil samples. Additionally, we examined chemical factors such as pesticide residues and heavy metals in soil samples. All tested samples did not shown contamination levels higher than the standard limit.