• The Korean Journal of Pesticide Science
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• v.16 no.1
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• pp.43-53
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• 2012

In order to monitor the levels of pesticides in environment-friendly stalk and stem vegetables and leafy vegetables selling at markets in Korea. A total of 637 (395 organic agricultural products, 242 pesticide-free agricultural products) samples of 21 stalk and stem vegetables and leafy vegetables were collected twice from markets in July and August 2010 in Korea. Pesticide residues in samples were analyzed by multiresidue method for 240 pesticides using GC-ECD/NPD and HPLC-DAD/FLD. The suspected-pesticides were confirmed with a GC-MSD. As a result of analysis, six pesticides were detected from eight samples, representing a detection rate of 1.3% and amounts of pesticide residues in samples were as follows: alachlor 0.043, chlorfenapyr 0.022-0.324, diazinon 0.024, dicofol 0.009-0.138, dithiopyr 0.008, metolachlor 0.025 mg/kg. Their residue levels were below the MRLs. Estimated daily intakes (EDIs) of the pesticides detected from stalk and stem vegetables and leafy vegetables were less than 25% of their acceptable daily intakes (ADIs), representing that residue levels of the pesticides detected were evaluated as safe for consumption. However, five samples containing pesticide residues were unsuitable environment-friendly products because of pesticides detected more than their 10% MRLs in organic and pesticide-free agricultural products.

• Food Science of Animal Resources
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• v.33 no.5
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• pp.617-625
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• 2013

The present study was carried out to assess dietary exposure and risk for the infant population by lead (Pb), cadmium (Cd), and arsenic (As) exposure through modified milk powder and formulas. Analysis of heavy metals was performed using a microwave device and inductively coupled plasma-mass spectrometry, the method for which was fully validated. Various samples (n=204), including modified milk powder, modified milk, follow-up modified milk powder, infant formula and follow- up formula, were collected from retail outlets and markets across Korea. The mean contents of heavy metals were Pb 0.0004 (modified milk)-0.010 (infant formula) mg/kg, Cd 0.002 (modified milk)-0.007 (follow-up formula) mg/kg, and As 0.004(modified milk)-0.040 (infant formula) mg/kg, respectively. For risk assessment, daily intakes of heavy metals through maximum intake of modified milk powder and formulas were calculated and compared with reference doses established by JECFA and WHO. The dietary exposures of heavy metals were $0.78-1.04{\mu}g$ Pb/d, $0.65-0.87{\mu}g$ Cd/d, and $2.25-3.00{\mu}g$ As/d, corresponding to 2.0-4.5%, 7.1-16.0%, and 0.4-0.9% of reference doses, respectively. Therefore, the level of overall dietary exposure to heavy metals for Korean infant through food intake was below 20% of the reference dose, indicating a low risk to infant consumers.

• Research in Plant Disease
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• v.23 no.4
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• pp.355-362
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• 2017

The 4 viruses, the Apple chlorotic leaf spot virus (ACLSV), Apple stem pitting virus (ASPV), Apple stem grooving virus (ASGV), and Apple mosaic virus (ApMV) and 1 viroid, Apple scar skin viroid (ASSVd) are known major viral pathogens of apple trees in Korea. Infection degree of the 5 viral pathogens in the commercial nursery trees of major apple cultivars, 'Hongro', 'Fuji' and bud mutation of 'Fuji' was investigated. Infection ratio of the ACLSV, ASPV and ASGV for scion of an apple cultivar 'Hongro' were 100%, 81.3% and 100%, respectively. On the other hand, no infection for either ApMV and ASSVd detected. For the root stock of the cultivar, infection ratio of ACLSV, ASPV and ASGV showed 87.5%, 81.3% and 100% as well as ApMV and ASSVd were 12.5% and 6.3%, respectively. From the scion of apple cultivars 'Fuji' and bud mutation of 'Fuji', infection ratio of ACLSV, ASPV and ASGV showed 86.7%, 86.7% and 100%, respectively. Whereas, no infection for either ApMV or ASSVd detected. From the root stock of the cultivars, infection ratio of ACLSV, ASPV and ASGV showed 86.7%, 93.3% and 93.3% as well as ApMV and ASSVd were 12.5% and 6.3%, respectively. Result of our study indicates that most of commercial nursery apple trees were supplied with multiple infections by apple viruses causing potential losses for apple growers and, henceforth, agricultural policy for supply of the virus-free trees should be employed as soon as possible.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.8
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• pp.546-556
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• 2020

This study aims to provide basic data for food hygiene safety education by surveying the status of food hygiene safety awareness, attitude, and personal hygiene control of male and female college students in South Chungcheong Province, Republic of KOREA. From May 16 to June 30, 2019, 1,048 survey responses were collected at H University and analyzed statistically using SPSS 23.0. This study found males believed agricultural, livestock, and fisheries products (3.37, 3.08), and processed foods (3.40, 3.00) to be significantly safer, and information on food safety was easier to obtain (3.40, 3.00) than females. They were also more confident in choosing safe food (3.30, 2.97), than females. This indicates that males are more aware of food hygiene safety than females. On the other hand, females responded that they checked the expiration date (4.11, 4.40) and stored food according to characteristics (4.08, 4.30) than males, wash their hands after using the toilet(4.23 4.53) than males. This suggests that females were more aware of food hygiene attitudes and personal hygiene control than males. According to this study, college students' awareness of food hygiene safety and attitude, personal hygiene control showed a gender gap. Males had higher food hygiene safety awareness than females, but their awareness of food hygiene attitudes and personal hygiene control was lower. This suggests that differentiated food hygiene safety education is needed considering these gender differences.

• Journal of the Korea Convergence Society
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• v.8 no.11
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• pp.159-165
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• 2017

We were investigated the content of 7 preservatives for sheet mask samples(n=42) sold in markets of Daejeon metropolitan city in 2016. &3.3%(n=35) of all samples contained at least one of preservatives. In samples of 30.95(n=14) and 2.39%(n=1) was detected with 2 and 3 preservatives. Phenoxyethaol(PE), methylparaben(MP), chlorphenesin(CP) and benzyl alcohol(BA) showed detection rate of 76.19(n=32), 16.67(n=9), 21.43(n=7) and 2.38%(n=1), respectively. Also The content of detected preservative showed range of 0.06~0.71, 0.18~0.35, 0.06~0.71 and 0.32% and was within the maximum allowed amount established by Korean FDA. However ethylparaben(EP), propylparaben(PP) and benzylparaben(BP) in all samples was not detected. These results can be useful for sharing in emotion-fusioned information and supplying right to know of user.

• Journal of Korean Society of Forest Science
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• v.89 no.1
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• pp.126-134
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• 2000

The purpose of this study is to examine the status of supply-demand and procurement of the timber used for wooden cultural properties. Because people require the high quality pine timber with cultural assurance and public function for cultural properties, it is priced far higher than ordinary construction timber. The timber consumption was estimated at 18 thousand cubic meter in 1998, of which the large sized log(LSL) with the small end diameter over 30cm consisted of 35.5%, equivalent to 6,300 cubic meter. Majority of the timber was supplied from private forest located in Kangwon-do and national forest, accounting for 65.7% and 16.7%, respectively. Recently the supply more and more relied on timber logged in Kangwon-do. Owing to lack of domestic supply of LSL class timber, part of the volume has been substituted by import log. Most of carpenters working on cultural properties thought that supply of LSL timber would hardly meet the increasing demand for uses of wooden cultural properties. Finally, in order to uphold the tradition of wooden cultural properties, it is necessary to establish a forest management plan which aim at producing large size high quality pine timber.

• The Korean Journal of Pesticide Science
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• v.16 no.4
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• pp.308-314
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• 2012

In order to monitor the residual pesticides in environment friendly agricultural commodities, fruits and fruiting vegetables. Twenty-five agricultural commodities were collected twice in May and August 2011 from nine environment friendly agricultural commodities-selling supermarkets and retail stores located in eight major cities in Korea. The number of each agricultural commodity collected, 555 samples in total, was 152 organic agricultural products, 202 pesticide-free agricultural products and 201 low-pesticide agricultural products. Pesticide residues in samples were analyzed by multiresidue method for 245 pesticides using a GC-ECD/NPD and an HPLC-DAD/FLD and the peaks suspected as pesticides were identified with a GC/MSD. As a result of pesticide residue analysis, three pesticides, bifenthrin, EPN and chlorpyrifos, were detected from four samples including apple, representing a detection rate of 0.72%. The residue levels of the four pesticide-detected samples were less than their maximum residue limits (MRLs) but one pesticide EPN detected from pear exceeded its legible criterion of one twentieth MRL. Estimated daily intakes of the pesticides detected from fruits and fruiting vegetables were less than 0.76% of their maximum permissible intake.

• Korean Journal of Food Science and Technology
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• v.40 no.3
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• pp.243-250
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• 2008

In Korean, nine tar colors are permitted in foods. This study assessed these compounds in the favorite food items of children found near elementary schools. A total of 439 items categorized under six food types were included in the analysis. The most frequently detected tar colors were tartrazine (Y4), Brilliant Blue FCF (Y5), Allura Red, and Sunset Yellow FCF, respectively. One or a mixture of two tar colors were commonly found in products such as gums, ice bars, soft drinks, and cereals. However, most often, combinations of two or three tar colors were detected. The levels of tar colors in candies, chocolates, gums, ice bars, cereals, and soft drinks were 0.11-1169.58 mg/kg, 0.73-468.02 mg/kg, 0.10-602.46 mg/kg, 0.25-162.32 mg/kg, 0.11-753.68 mg/kg, and 0.21-69.45 mg/kg, respectively. Tar color levels were higher in chocolates and gums than in soft drinks and ice bars. And Y4 and Y5 were detected at the highest levels. For ages 7-12, the total estimated daily intake (${\sum}EDI$) of each tar color ranged from 0.004 to 1.017 mg/day/person. These values were 0.02-5.98% of the FAO/WHO's acceptable daily intake (ADI).

• Journal of the Society of Cosmetic Scientists of Korea
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• v.43 no.4
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• pp.381-390
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• 2017

This study was conducted to determine 16 preservatives and 18 UV filter ingredients levels in 100 sunblock products. The order of detection rates of preservatives was phenoxyethanol (n=61), benzoic acid (n=19), methyl paraben (n=11), benzyl alcohol (n=8), propyl paraben (n=7). Also the order of detection rates of UV filter ingredients was titanium dioxide (n=81), ethylhexyl methoxycinnamate (n=69), zinc oxide (n=48), ethylhexyl salicylate (n=48), bis-ethylhexyloxyphenol methoxyphenyltriazine (n=44). The content of the detected preservatives and UV filter ingredients was within maximum allowed amount established by KFDA. In addition, preservatives and UV filter ingredients, which were not labeled in the products, were detected in 31 and 2 products respectively.

• Food Science and Preservation
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• v.16 no.4
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• pp.573-578
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• 2009

Microbial contamination levels in a fresh-cut leafy vegetable processing plant were evaluated. Total plate counts of samples collected from the walls, equipment, and raw materials ranged from $10^1{\sim}10^2$ CFU/100 $cm^2$, $10^0{\sim}10^4$ CFU/100 $cm^2$, and $10^4{\sim}10^6$ CFU/g, respectively. No coliforms were detected on walls; however, equipment and raw materials contained coliforms in concentrations ranging from ND (not detected)to $10^2$ CFU/100 $cm^2$ and $10^4{\sim}10^5$ CFU/g, respectively. Additionally, total plate counts for falling and floating bacteria in the processing plant were $10^0{\sim}10^1$ CFU/plate and $10^1{\sim}10^3$ $CFU/m^3$, respectively. Pathogenic microorganisms such as Escherichia coli, Salmonella spp, Staphylococcus aureus, or Listeria monocytogenes were not detected on walls, equipment, or raw materials. Overall, the results of this study indicate that hygiene control in the fresh-cut processing plant should be improved.