• 생명과학회지
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• 제16권5호
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• pp.806-811
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• 2006

The regulation of labelling criterion for genetically modified (GM) foods has been enforced since 2001 in Korea. Therefore, GM soybean (GMS) or GM maize (GMM) processed foods must be labeled as GMO derived. We surveyed to see whether this regulation is kept relevantly or not and the distributive statue of GM processed foods. Using the method of polymerase chain reaction (PCR) based on endogenous gene (Le1n, SSIIb), promoter gene (P35S), terminator gene (NOS) and transgenic gene (RRS, Bt11, Bt176, GA21, T25, Mon810), we detected GMS and GMM processed foods circulating at the market in Busan area. Out of total 100 samples, 38 items were showed to be contaminated with recombinant gene by qualitative PCR. Among 82 domestic and 18 imported items, 32 (39.0%) and 6 (33.3%) items were detected with GM ingredients respectively. Also among the 80 soybean and 20 maize processed foods, 23 (28.7%) and 15 (75.0%) foods were sensitive to detect GMS and GMM ingredients respectively. For the qualitative PCR positive foods, we chased identity preservation (IP) certificates. And we verified that the PCR positive crops were grown up, harvested and shipped separately from GMO but just mixed with GMO in the threshold of the non attentional contamination levels (3%). Thus we can not find out any regulation-violent case at all. The results of this study will help to keep the regulations of GM labelling and be informative to consumers who want to know the laboratory results of GMO testing.

• 한국식품영양과학회지
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• 제23권2호
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• pp.328-332
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• 1994

The purpose of present paper is to compare and analyze the quality of imported Chinese products with the Korean local products in terms of proximate composition, character of external appearance , ingredient composition of dried bracken , dried radish cubers, meju , dried pollack, dried mussel , and dried brown seaweed(Undaria puinnatidifida) which were imported between Oct., and Dec. 1992 and distributed in the market. Moisture recovery of dried products resulted in changed shape and incomplete moisture recovery due to an excessive drying in consideration of hygroscopic property in the course of distribution. The amounts of water soluble brown pigment were two times greater in Korean dried pollack and bracken than those of Chinese products. The content of volatile basic nitrogen (VBN) were twice in Chinese dried pollack, and this may be due to foregin odor from a long transport time and distribution process. The contents of aflatoxin in Korean products were not detectable and these of Chinese products were 5 $\mu\textrm{g}$(%) in dried pollack, bracken and radish cuber. the remaining agricultural chemicals were not detectable in all products. Because of poor technique and facilities, the external appearance of Chinese products especially dried mussels and dried pollack were not uniformed in size and color. Discoloration and foregin substance such as hair, dust were checked , Korean products were mostly packed in small size in PP or bag, and Chinese products were packed in bulk size and distributed as a bulk.

• 한국식품위생안전성학회지
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• 제33권4호
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• pp.266-271
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• 2018

본 연구는 건강기능식품의 복합제품 개발 및 일반식품 형태의 제품개발 확대에 따라 옥타코사놀의 특이성 및 감도 등이 개선된 분석법을 마련하여 향후 공정시험법에 활용할 수 있도록 하였다. 건강기능식품 중 옥타코사놀의 함량분석을 위해 GC-MS를 이용한 분석법을 확립하고 유통중인 제품을 대상으로 적용성을 검토하였다. 분석법 검증은 특이성, 직선성, 검출한계 및 정량한계, 정확성, 정밀성에 대해 수행하였다. $12.5{\sim}200{\mu}g/L$의 농도범위에서 $r^2=0.999$ 이상의 우수한 직선성을 확인할 수 있었으며, 검출한계와 정량한계는 각각 4.5, $13.8{\mu}g/L$이었다. 공시료에 표준물질 첨가법을 이용하여 정확성을 검토하였으며 50, 100, $150{\mu}g/L$의 농도에서 각각 94, 93, 109%의 회수율을 확인할 수 있었다. 정밀성 결과에서는 시료 채취량을 80 mg, 120 mg, 220 mg으로 각기 달라하여 측정한 결과 상대표준편차는 1.8~2.4%로 확인되었다. 실험실간재현성은 1.0~2.3%로 나타났다. 본 연구에서 확립된 분석법을 적용하여 유통제품 9건에 대해 적용성 검토를 실시한 결과 전체 시료에서 분석이 용이하였으며, 모두 표시기준에 적합함을 확인하였다. 본 연구를 통하여 확립된 GC-MS를 이용한 건강기능식품 중 옥타코사놀 분석법은 향후 공정시험법으로 활용할 수 있으며 국내 건강기능식품의 관리 기반을 강화하는데 기여할 것으로 사료된다.

• 한국동물위생학회지
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• 제31권2호
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• pp.239-254
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• 2008

This study was conducted in order to get basic data on standards and specifications of health and functional foods. A total of 101 kinds of functional healths foods were examined during the period of January to December 2005. Among them, 89 kinds were local products and 12 kinds were imported products. Test items were 6 kinds of heavy metals (lead, cadmium, mercury, copper, zinc and manganese), 5 bacteria (common bacteria, coliform group, E coli, Bacillus cereus and Clostridium perfringens), and 6 preservatives (sorbic acid, benzoic acid, DHA, ethyl paraben, propyl paraben and butyl paraben). As a result of heavy metals, cadmium, was detected from the glucosamine products by 1.52ppm in average, mercury from cereal products by 0.004ppm in average, and lead from chlorella foods by 3.48ppm in average. Bacteria were identified from 3 cereal products, and amount of common bacteria were about $4.8{\times}105cfu/g$ in average. E Coli and Coliform group were isolated from 2 products and 4 products, respectively. All of those products were flour meal products. Any of 6 kinds of preservatives was not detected from all the products. It is thought that these test results will be available as basic data for enactment of relevant laws and regulations for production and control of safer and more hygienic foods in the future because the standards of the harmful heavy metals are not complete or available yet according to the Food Sanitation Law and the Functional Healths Foods Law.

• Nutrition Research and Practice
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• 제16권4호
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• pp.517-526
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• 2022

BACKGROUND/OBJECTIVES: The increased consumers' interests in health and food safety have increased the demand for organic foods. Many studies have been performed on consumers' purchase intentions for organic foods and their influencing factors, and various studies have shown that the prices of organic foods and the consumers' willingness to pay are important influencing factors. This study examined the payment value of organic foods and agrifood consumer competency index according to the food-related lifestyles in South Korean consumers. SUBJECTS/METHODS: A cross-sectional analysis was performed using the 2019 Consumer Behavior Survey for Food. A total of 6,176 participants aged 19 to 74 years (male: 2,783, female: 3,393) were included in the analysis. RESULTS: Three factors were extracted by factor analysis (rational consumption-seeking type, convenience-seeking type, and health, and safety-seeking type) to explain the consumers' food-related lifestyles. The results of cluster analysis suggested that consumers were classified into 3 food-related lifestyles as the 'exploratory consumers' (n = 2,485), 'safety-seeking consumers' (n = 1,544), and 'passive consumers' (n = 2,147). Exploratory consumers showed a significantly higher willingness to pay for imported organic foods (P < 0.05). Safety-seeking consumers had a significantly higher willingness to pay for domestic organic foods (P < 0.05). For the agrifood consumer competency index, exploratory consumers had the highest score, followed in order by safety-seeking consumers and passive consumers. CONCLUSIONS: These results provide basic data in understanding consumption tendency for organic foods and agrifoods based on food-related lifestyles of South Korean consumers.

• 한국식품과학회지
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• 제32권4호
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• pp.747-754
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• 2000

Comet assay를 이용하여 방사선 조사육의 조사여부 및 조사량을 판별해내는 방법을 개발하기 위해 1-10 kGy의 감마선 조사량으로 조사한 육조직에서 일어나는 DNA 손상을 측정하였다. Comet assay에 있어 최적의 comet image를 얻기 위해 세포 분리, 세포 lysis 및 전기영동에 대한 여러 조건들을 적용하여 최적의 조건을 확립하였다. DNA 손상도는 관찰되는 comet의 평균 tail length와 tail length에 의해 구분된 4 손상 등급에의 분포, 그리고 그 분포비율에 의해 본 연구에서 제시한 식에 의해 계산한 relative damage index(RDI) 값 등으로 비교 판정하였다. 평균 tail length와 RDI 값은 조사량이 증가함에 따라 증가하여 DNA 손상도가 증가됨을 나타내었으며, 평균 tail length으로는 조사량 간의 차이를 명확히 분별하기가 어려웠던 반면 RDI 값에 의하면 조사여부 및 조사량을 판별하기에 적합함을 알 수 있었다. 국내산 한우육과 수입 냉장육에 대하여 blind test를 실시한 결과 수입육이 높은 DNA 손상도를 나타내었는데 그 RDI 값은 방사선 조사에 의한 값보다는 비교적 낮은 것이어서 수입육의 DNA 손상은 방사선 조사가 아닌 저온처리의 결과인 것으로 판단되었다. 본 연구의 결과로부터 Comet assay가 우육의 방사선 조사여부 및 조사량 판별에 유용한 기술로 응용될 수 있을 것으로 판단되었다.

• 한국유기농업학회지
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• 제14권1호
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• pp.17-40
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• 2006

The trend towards forming economic blocs coupled with global economic arrangements such as DDA and FTA increase pressure on the liberalization of the agricultural sector. South Korea is taking part in the DDA negotiations. Once the DDA negotiations are implemented, the extent of liberation of the agricultural market is expected to be wider and timing of market opening is sooner than those effects of the UR agricultural agreement. A reduction in tariff rates and the government subsidy will follow, accordingly. However, many analysts in the agricultural sector express deep concern over a negative development in local agricultural market as demonstrated in China where the local market was dominated by imported agricultural products. This study aimed to investigate progress that China made in favor of the agricultural industry, including environment-friendly agricultural policy, and suggest ideas to drive the development of the agricultural industry in a better direction in Korea by comparing the two countries.

• 식품과학과 산업
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• 제44권4호
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• pp.33-43
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• 2011

• 유통과학연구
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• 제17권6호
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• pp.57-63
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• 2019

Purpose - This research is to review the state of standard labeling compliance and identify the factors that are conducive to compliance with the Labeling Standards of the Health Functional Foods Act in internet distribution. Research design, data, and methodology - We checked 9 labels including product name, expiration date, manufacturing date, raw material, ingredient, operative dose, nutritional information, daily intake, and functional effect which are based on Labeling Standards of the Act from 100 health functional foods in the internet shopping malls. These 9 structure & function claims were compared using a Chi-square test. Results - There was a statistically significant difference in the use of standard labeling between domestic product and imported products (p<.001). The related strength between these two variables showed a moderate effect size. Also, there was a statistically significant difference between accredited advertising/unaccredited advertising distinction and use of standard labeling (p<.001). The related strength between these two variables showed a moderate effect size. Conclusions - The Labeling Standards of the Act were not followed and found to be related to imports or unauthorized advertising in internet distribution. The information displayed according to the Labeling Standards was only about 2 on the average, so many labels have been posted unreadably without arrangement.

• 한국식품위생안전성학회지
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• 제9권4호
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• pp.191-198
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• 1994

The major purpose of the present study is to syrvey vegetables, meats, seafoods, processed foods and imported foods for the presence of Listeria spp. and to prevent listeriosis caused by the contamination of Listeria monocytogenes. Listeria spp. was not found in vegetables and processed foods. The optimum growth condition of isolates indentified as Listeria monocytogenes was pH 7.0 and 37$^{\circ}C$. the antimicrobial effect of grapefruit seed extract(GFSE) was observed in the level of more than 100ppm by disk method. When 1ml(2.5$\times$106 CFU/ml) of Listeria monocytogenes was inoculated and incubated for 3 days at 3$0^{\circ}C$, the total cell number of the organism was 4.5$\times$109 in the control, 7.2$\times$103 in 100 $\mu\textrm{g}$/ml of GFSE medium, and 3.5 $\mu\textrm{g}$/ml of GFSE medium. Direct visualization of microbial cells by using both transmission electron microscope and scanning electron microscope showed microbial cell membrane the function of which was destroyed by treating with the dilute solutions of GFSE. It could be confirmed that GFSE completely inhibited the growth of the test strain of Listeria monocytogenes.