• Journal of Korean Society of Forest Science
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• v.99 no.5
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• pp.698-705
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• 2010

The concentration of monoterpenes (12 species) was measured from spring to fall in 2008 in ambient air at six different forests located in the southern parts of Korea. Sampling - using a Solid Adsorption Tube - was conducted at 2-hour-interval a day (24 hours) of each season. The highest annual average concentration of total monoterpene was 0.715 ppbv, which occurred at Mt. Baega. ${\alpha}$-Pinene, sabinene and ${\beta}$-pinene were the most abundant compounds throughout the sampling periods and areas. The concentrations of monoterpene were higher in spring than in any other seasons. The compositions and concentrations of monoterpene displayed a distinct pattern by area. Most of monoterpenes had diurnal variations with higher concentrations during the daytime, and lower during the nighttime. This may be due to the fact that the amount of monoterpenes emitted increases at elevated ambient temperatures and increased sunlight intensity. The results of this study showed that each area had distinct monoterpene compositions, which depended on the tree species, topography and local climate at each area.

• Korean Journal of Veterinary Service
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• v.40 no.1
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• pp.47-52
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• 2017

The main goal of this survey was to assess the current sanitation status and safety standards of meat processed products purchased at instant meat sales and processing operators. Analyses were carried out from April to September in 2016 in Gwangju area, Republic of Korea. A total number of 150 samples including seasoned meats, ground meat products, meat extract products, heated seasoned meats, sausages and hams from 35 butcher shops was collected. The number of inappropriate cases was revealed eleven cases (7.3%) in total viable count of bacteria (TVC), total coliform counts (TCC) and Listeria monocytogenes. The reported data indicate that more systemic and technical guidance is needed to monitor instant meat sales and processing operators in order to guarantee safety of meat processed products.

• Journal of Food Hygiene and Safety
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• v.26 no.4
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• pp.383-387
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• 2011

The levels of migration of 1-hexene and 1-octene residues in PE (polyethylene) products were analyzed by Headspace gaschromatography (HSGC). A total of 21 samples were including lap, polyglove, zipper bag and ect. The samples were eluted with distilled water, 4% acetic acid, 20% ethanol and n-heptan. The limit of detection (LOD) was 0.06 mg/L ~ 0.30 mg/L and limit of quantitation (LOQ) was 0.21 mg/L ~ 1.01 mg/L, respectively. But because of the high volatile, n-heptan elution was not detected 1-hexene and 1-octene standard. 1-hexene and 1-octene were not detected in the sample which eluted with simulant at $60^{\circ}C$, 30min. Microwave for 1 minute also treated sample and direct heated at $100^{\circ}C$ without simulant were not detected.

• Korean Journal of Veterinary Service
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• v.36 no.3
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• pp.209-216
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• 2013

A total of 301 samples of bovine liver, spleen and omasum were collected from butchers and restaurants in Gwangju, Korea during 2012 and all samples were subjected to bacteriological examination and antibiotic residues. Also, this study was performed to survey the consciousness for hygiene of livestock workers who are handling bovine by-products in Gwangju. The detection rate of aerobic plate count (APC) was higher in summer than in other seasons in all by-products (P=0.000). The detection rate of E. coli count was lower in the liver than the spleen and omasum (P=0.000). Twenty four of the samples (8.0%) were contaminated with S. aureus while one spleen sample (0.3%) was contaminated with L. monocytogenes and finally 10 (3.3%) of the liver and omasum samples were contaminated with Cl. perfringens. Five of the twenty-four S. aureus isolates harbored enterotoxin gene. However, the cpe gene of Cl. perfingens was not detected among any of the 10 isolates. Antibiotic residues were not detected in the liver samples. The consciousness survey's results showed that most of them (58.8%) were safe.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.30 no.2
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• pp.213-225
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• 2020

Objectives: In order to prepare measures to enhance construction workers' satisfaction with their working environment, the effects of working conditions and the mediating effects of safety and health information on workers' satisfaction with their working environment in the construction industry have been studied. The results of this study can be used as basic data for further studies in this field. Method: Data on 1,361 male construction workers from the 5th Korea Working Condition Survey (KWCS) were used for this study. The effects of working conditions were analyzed using SPSS 25.0 and the mediating effects of health and safety information were analyzed with SPSS PROCESS macro using the bootstrap method. Results: The safety and health management system and the self-determination of break time had a statistically significant positive effect on satisfaction with the working environment. Chemical and ergonomic risk factors had a statistically significant negative effect on satisfaction with the working environment. The provision of safety and health information, the mediating variable, had a statistically significant positive effect on satisfaction with the working environment. Therefore, it had a mediating effect between working conditions and satisfaction with the working environment. Conclusion: In order to enhance construction workers' satisfaction with their working environment, the above results suggest that the safety and health management system should be well established; self-determination of break times should be guaranteed; and chemical and ergonomic risk factors should be controlled. In addition, workers should be provided with necessary health and safety information related to their work. This study will be useful if these findings are used as basic data in further studies in related fields.

• Korean Journal of Veterinary Service
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• v.36 no.2
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• pp.111-119
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• 2013

The aim of this study was to investigate the isolation frequency and antimicrobial resistance of Escherichia coli (E. coli) and Enterococcus spp. from domestic beef and pork on sale in Seoul, Korea. A total of 106 (10.4%) E. coli and 114 (11.2%) Enterococcus spp. from 635 domestic beef and 381 pork samples were isolated and examined for susceptibility to 15 and 11 antimicrobial agents, respectively. The most frequent antimicrobial resistance observed in E. coli isolates was to ampicillin (38.6%), followed by streptocmycin (34.9%) and tetracycline (32.0%). The most frequent antimicrobial resistance in E. faecium isolates was to erythromycin (53.8%) and rifampin (46.1%), and in E. faecalis isolates was to tetracycline (55.7%) and rifampin (55.0%). Among the isolates, multi-drug resistant (MDR) E. coli and Enterococcus spp. strains showing resistances to more than two antimicrobial agents tested were 10.4% and 11.2%, respectively. As a result, appropriate protocols for antimicrobial agents and strategies to reduce antimicrobial resistance will be needed in future.

• YAKHAK HOEJI
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• v.54 no.1
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• pp.39-48
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• 2010

The objective of this study was to analyze sennoside A and rhaponticin simultaneously according to sennoside A of Rhei Rhizoma determination in Korean Pharmacopoeia. $NaHCO_3$ solution in KP was compared with methanol which usually used as solution to extract rhaponticin in Rhei Rhizoma. The method was validated through the guidelines of linearity, LOD, LOQ, specificity and accuracy. Two solution weren't different about validation parameter and passed. So this method were applied to the determination of 6 commercial Rhei Rhizoma samples and 2 samples were suitable for the legal standards.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.52 no.1
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• pp.13-18
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• 2019

We determined the contents of 11 biogenic amines in 20 types of cabbage kimchi, 10 types of fish sauce, and 40 types of salted fish purchased from small- and medium-sized grocery stores in Gyeonggi-Do, Republic of Korea, from June to October 2017. The content of each of the biogenic amines in the various types of cabbage kimchi was slightly lower than that in detection amounts of each of the 10 types of biogenic amines and the values reported by Joe et al. The histamine content of all five types of anchovy sauce was lower than the limit set by the European Union (400 mg/kg), but that of three of the five types of sand lance sauce was higher. Analyzing the ratios of the contents of five highly toxic biogenic amines to those of the 11 biogenic amines yielded no quantitative correlation. The estimated daily intake of the five highly toxic biogenic amines in cabbage-kimchi and fermented fish was ${\leq}6mg$.

• Korean Journal of Veterinary Service
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• v.36 no.3
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• pp.187-192
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• 2013

For the monitoring of six viral disease (CIV: canine influenzavirus, CPIV: canine parainfluenzavirus, CHV: canine herpesvirus, CPV2: canine parvovirus type 2, CCoV: canine coronavirus, CNV: canine norovirus) inspections, a total of 300 samples were collected nasal or feces from the companion dogs of animal hospital (n=98) and the abandoned dogs of animal shelters (n=202) in Gwangju, Korea. Using PCR and RT-PCR, CPV2, CPIV and CHV were detected in 55 (18.3%), 11 (3.7%), 1 (0.3%), respectively. CPV2 was highly detected in May, October and November. and CPIV was highly detected in November. But those agents were not detected the virus in March and July. Based on the results of the investigation continuous monitoring for companion and abandoned dogs will be required.

• Korean Journal of Veterinary Service
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• v.26 no.2
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• pp.105-111
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• 2003

From February 2000 to December 2001, A total of 1,785 samples was taken from beef and pork carcasses in Seoul. Seven(0.69%) Listeria spp. were isolated from the 1,014 of beef carcasses, and five(0.65%) were isolated from the 771 of pork carcasses. The isolates were identified L monocytogenes by API listeria, and VIDAS LMO kit, serological test and PCR assay were preformed. A total 12 strains of L monocytogenes were isolated form samples tested and all of the strains were classified into serotype 1. PCR primers are selected to amplify a 520-base pair(bp) DNA fragment from the listeolysin O gene(hlyA) of Listeria monocytogenes. A 520-bp product was detected in PCR with DNA from L monocytogenes, but not from the other Listeria species tested.