• Korean Journal of Environmental Agriculture
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• v.23 no.1
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• pp.52-58
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• 2004

This work was conducted to provide the reference data of radioactivity in the foodstuffs at a radiological emergency situation in Jeju Island The sampled foodstuffs were agricultural (31), livestock (6), marine (12) and forest products (4), and processed foods (3) consumed by Jeju Islanders. $^{137}Cs$ and $^{40}K$ activities were determined by HPGe r-ray spectromety. The activity ranges of $^{137}Cs$ was ${\sim}650\;mBq/kg$ fresh in the agricultural products, ${\sim}131\;mBq/kg$. fresh in the livestock, ${\sim}834\;mBq/kg$ fresh in the forest, ${\sim}253\;mBq/kg$ fresh in the marine and $32.0{\sim}483\;mBq/kg$. fresh in the processed foods (tea). In case of $^{40}K$ the activity was $16.6{\sim}542\;Bq/kg$. fresh in the agricultural products, $39.1{\sim}294\;Bq/kg$ fresh in the livestock, $85.5{\sim}116\;Bq/kg$ fresh in the forest, $50.1{\sim}657\;Bq/kg$ fresh in the marine, and $33.6{\sim}1,065\;Bq/kg$ fresh in the processed foods (tea). The highest activity of $^{137}Cs$, 834mBq/kg fresh was observed in oak mushroom and $^{40}K$ 1,065 Bq/kg fresh in coffee. Annual effective doses of $^{137}Cs$ and $^{40}K$ by intake of foodstuffs per capita were the following order; agricultural products (66,543 nSv) > livestock products (19,311 nSv) > processed foods (6,648 nSv) > marine products (6,579 nSv) > forest products (860 nSv). Therefore, total annual effective dose was summed 99,941 nSv which is quite low level comparing to the annual effective dose by external exposure, 2,400,000 nSv. The data obtained in this study can be useful for monitoring whether the foodstuffs are contaminated or not at an emergency radiation accident, and showed that the foodstuffs consumed in Jeju are safe in terms of annual effective dose of $^{137}Cs$ and $^{40}K$

• Journal of Food Hygiene and Safety
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• v.35 no.1
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• pp.31-36
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• 2020

To ensure food safety of berries from radioactive contamination, radioactivity monitoring was conducted with a total 258 samples of the berries and processed berry products distributed in Gyeonggi-do, South Korea, from 2016 to 2018. The concentration of artificial radionuclides, ¹³¹I, ¹³⁴Cs and ¹³⁷Cs, was analyzed using gamma-ray spectrometry. ¹³¹I and ¹³⁴Cs were not detected above the MDA (Minimum Detectable Activity) value from any of the samples. However, the range of radioactivity concentration of ¹³⁷Cs was 0.69-808.90 Bq/kg in 39 cases of berries. ¹³⁷Cs was detected at 0.70-3.29 Bq/kg from 6 cases of domestic berries, which were manufactured from imported raw materials. Among 33 cases of imported berries, ¹³⁷Cs was detected at 0.69-808.90 Bq/kg. The concentrations of ¹³⁷Cs in 1 case of blueberry powder product (808.90 Bq/kg) and 2 cases of lingonberry powder products (103.93, 188.46 Bq/kg) exceed domestic maximum radioactivity limits, and these were detected in the berries from Poland. These results suggest that monitoring system for imported berries and processed berry products should be continuously intensified to secure food safety.

• Journal of the Korea Convergence Society
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• v.13 no.4
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• pp.373-381
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• 2022

The Fukushima nuclear power plant water spill caused by the Great East Japan Earthquake in March 2011 raised fears about radiation exposure through consumption of radioactively contaminated seafood. The Korean government banned importing agricultural and fishery products from eight prefectures near Fukushima, but the related news were continuously reported partly due to the WTO dispute with Japan, which seems to have aggravated consumers' anxiety about seafood. In this study, data on daily purchases of products for three years (2018-2020) were collected and the effect of Japanese radiation-related news on domestic consumers' purchases of seafood was estimated using a polynomial lag distributed model. As a result of the analysis, it was found that radiation-related news had a statistically significant negative effect on the purchase of seafood on the 5th and 6th days after exposure to consumers through the media. It captures the carryover effect in which consumers' perceptions are reflected in the purchase of seafood after exposure to related news.

• Journal of Food Hygiene and Safety
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• v.36 no.3
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• pp.248-256
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• 2021

A total of 120 samples corresponding to 12 categories of dried processed fishery products distributed in Gyeonggi-do were examined for radioactivity contamination (¹³¹I, ¹³⁴Cs, ¹³⁷Cs) and heavy metals (lead, cadmium, arsenic, and mercury). One natural radioactive material, ⁴⁰K, was detected in all products, while the artificial radioactive materials ¹³¹I, ¹³⁴Cs and ¹³⁷Cs were not detected at above MDA (minimum detectable activity) values. The detection ranges of heavy metals converted by biological basis were found as follows: Pb (N.D.-0.332 mg/kg), Cd (N.D.-2.941 mg/kg), As (0.371-15.007 mg/kg), Hg (0.0005-0.0621 mg/kg). Heavy metals were detected within standard levels when there was an acceptable standard, but the arsenic content was high in most products, although none of the products had a permitted level of arsenic. In the case of dried processed fishery products, there are products that are consumed by restoring moisture to its original state, but there are also many products that are consumed directly in the dry state, so it will be necessary to set permitted levels for heavy metals considering this situation in the future. In addition, Japan has decided to release contaminated water from the Fukushima nuclear power plant into the ocean, so there is high public concern about radioactivity contamination of food, including fishery products. Therefore, continuous monitoring of various food items will be necessary to ease consumers' anxiety.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.04a
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• pp.101-101
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• 2018

최근 들어서 대기오염의 변화, 미세먼지, 황사, 각종 중금속 오염, 방사능 등의 대기오염으로 인하여 인간의 질병에 대한 면역기능이 떨어지고 있다. 또한 바이러스 침입에 의한 면역기능의 약화는 심각한 문제로 대두되고 있다. 따라서 항염, 항균, 항암, 항바이러스에 대한 관심이 매우 고조되고 있다. 이러한 문제들을 해결하고 인체의 면역기능을 활성화시키기 위해서는 정신수양과 먹거리의 환경변화가 절실히 요구되어지고 있다. 면역기능을 활성화 시키는데 가장 좋은 식품으로는 야생에서 자생하는 동충하초로 알려져 있다. 이러한 동총하초는 가격이 매우 비싸서 일반적으로 식품으로 활용하기에는 많은 어려움이 따르고 있다. 중국의 해발 3000m 이상에서 야생하는 동충하초를 실험한 결과는 다음과 같다. 동충하초를 메탄올과 에탄올에서 농축하여 실험을 하였던 결과 에탄올 처리구보다는 메탄올 처리구에서 훨씬 더 양호한 결과를 나타내었다. 이러한 현상은 총 폴리페놀 함량, 항산화, 항균, 항암활성에서 같은 반응을 보였다. 동충하초의 항균활성은 일반적으로 실험에 사용된 5종(Bacillus subtilis, Candida albicans, Escherichia coli, Corynebacterium ammoniagenes, Pseudomonas aeruginosa)의 균에서 대부분 억제활성을 나타내었다.

• 건강소식
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• v.13 no.9 s.130
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• pp.11-22
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• 1989

조물주가 세상을 창조할 때 당신이 보시기에도 좋고, 사람들이 살기에도 좋도록 만들었다는 얘기가 있다. 그 후 인간은 조물주가 부여해 준 능력으로, 오랜 시간을 거치면서 산업의 발전을 가져왔다. 그러나 또 한편으로는 자연의 위계질서를 파괴했고, 이제는 생명의 존엄성이 철저히 무시당하는 상황에까지 도달했다. 일반인은 잘 알지 못하는 문자나 수치로 모든 것의 공해도.오염도를 측정하면서 아직은 위험수위가 아니라고 자족하는 요즘의 세태를 보면서 어릴 때봤던 미래 공상과학 만화가 생각난다. 산업발전으로 인한 방사능이나 공해의 문제를 미쳐 해결하지 못한 인류의 생존을 위한 험난한 싸움을 그린것 이었다. 식수를 사먹어야 한다는 어느 외국의 일이 이제는 결코 남의 일이 아님을 피부 가까이 느끼면서, 공해의 문제가 얼마나 심각한지를 알아보고 우리 주의를 환기시켜 보도록 하자.

• Journal of Radiation Protection and Research
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• v.26 no.2
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• pp.87-91
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• 2001

The optimized derived intervention levels for animal products were evaluated based on cost-benefit analysis. From these results, the radionuclide concentrations in animal feedstuffs for use were derived. It was shown that radionuclide concentrations in animal feedstuffs for use depend strongly on animal products, radionuclides and feeding period (period from the starting time to be led with contaminated feedstuffs to production time of animal products). In case of feedstuffs contaminated with long-lived radionuclides ($^{l37}Cs,\;^{90}Sr$), the feedstuffs with lower contamination should be supplied to animals with increase of feeding period due to the bioaccumulation of radionuclides. While, in case of feedstuffs contaminated with short-lived radionuclides ($^{131}I$), the feeding of higher contaminated feedstuffs was possible with increase of feeding period due to radionuclide decay. It was shown that $^{137}Cs$ concentration in animal feedstuffs lot use was lower than $^{90}Sr$ concentration. It is primarily, due to the higher feed-animal product transfer factor of $^{137}Cs$.