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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Food Hygiene and Safety
Journal Basic Information
Journal DOI :
The Korean Society of Food Hygiene and Safety
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Volume & Issues
Volume 17, Issue 4 - Dec 2002
Volume 17, Issue 3 - Sep 2002
Volume 17, Issue 2 - Jun 2002
Volume 17, Issue 1 - Mar 2002
Selecting the target year
Purification of Water Contaminated with Synthetic Detergent by a Wild Strain of Oenanthe javanica
Journal of Food Hygiene and Safety, volume 17, issue 1, 2002, Pages 1~7
This study was performed to investigate the possibility of water purification by a wild train of Oenanthe javanica DC. Three commercially available dishwashing detergents and a standard surfactant, linear alkylbenzene sulfonate (LAS), were used for this study. The experiment was done in 1.5 ι transluscent aquariums. The plants were distributed into various concentrations of detergents and various kinds of detergent in the separate aquariums. The wet weight of the plants was significantly decreased (p<0.05), and the visual vitality of the plants also decreased in 2 days. The higher the concentration of detergent was, and the more time the plants were exposed to the detergents, the more decrease of growth was observed. The pH value of the culture media decreased in 2 days and in 4 days, then slightly increased in 6 days. However, the pH value of the media did not return to the initial neutral level of pH in 6 days. The pH value of the culture media containing the LAS remarkably increased in 6 days and increased to a neutral pH value in 18 days (p<0.01) as the pH of the other culture media. The chemical oxygen demand (COD) of the culture media gradually increased over the 4 days. A decrease of COD was observed in 6 days, but no tendency was observed between 12 and 18 days. The detergent in the culture media was highly significantly decreased in 2 days (p<0.01) and gradually decreased after this. After 6 days the remaining detergent was 12.4∼23.7% from the various levels of initially added concentration, and 22.4 ∼34.2% from the flour kinds of detergents. These results show that the reduction of detergent was caused by Oenanthe javanica and the effect was significant during the first 6 days when the plants were still growing well. These results indicate that the plant purifies contaminated water for several days and the effect could be variable according to the level of contamination and the environment in which the plant grows.
Effects of Phyto-Extract Mixture on the Nicotine Decomposition
Journal of Food Hygiene and Safety, volume 17, issue 1, 2002, Pages 8~14
Cotinine, one of nicotine metabolites, has been blown to reduce 4-(methylnitro samino)-1-(3-pyridyl)-1-butanone(NNK)- induced
MeG DNA adducts significantly in A/J mice when administered together with NNK. In order to examine the effects of phyto-extract mixture on the conversion of cotinine from nicotine, cellular and clinical experiments were carried out. When the phyto-extract mixture was added to culture media, human liver cells (FLCFR5) produced cotinine from nicotine 2~3 times compared to the control. The phyto-extract mixture which was microinjected into Xenopus oocyte along with nicotine showed the almost similar production of cotinine compared with the results of hepatic cell culture. In clinical test employing 17 to 20 healthy men, concentrations of urinary cotinine derived from smoking after taking photo-extract mixture increased up to 2 times compared to the control group. These results indicatethat the phyto-extract mixture can increase the metabolic efficiency of nicotine to cotinine, leading to the reduced formation of
MeG DNA adducts.
Study on White Precipitate in Most of Waters after Thawing
Journal of Food Hygiene and Safety, volume 17, issue 1, 2002, Pages 15~19
The objectives of this study were to investigate the change of silicon, cations and anions dissolved in water before and after thawing, and analyzed what the white-colored precipitate (WP) farmed after thawing was composed of. The silicon concentration that has been changed might have been compared with the weight of WP under water-free state. The major component of WP has been approved to be a silicon, while calsium was only a little contained. As the weight of WP has been nearly equal to the reduced silicon concentration, the weight of its could be changeable calculated by silica (SiO
) molecular weight. Therefore, WP could have been presumed to be a silica. The more silicon concentration was increased, the more weight of silicon was increased. Except for the sample "C", the amounts of cations and anions could be found to be unchangeable nearly. As a result of that, WP has been apparent to be silica itself while most of ions (excluded with Si) of any others were not changed.
Determination of Urinary Metabolite of Profenofos after Oral Administration and Dermal Application to Rats
Journal of Food Hygiene and Safety, volume 17, issue 1, 2002, Pages 20~25
This study was aimed to determine the urinary metabolite of profenofos, one of the organophos-phorus pesticides, as the biomarkers of exposure. Urine samples were collected fort 24 hours in metabolic cages after oral administration and dermal application of profenofos to rats. Identification of the derivatized urinary metabolite was determined by GC/MS and excretion time courses of the urinary metabolite was analyzed by GC/MS. Urinary metabolite of profenofos, 4-bromo-2-chlorophenol, was detected in rats urine both after oral administration and dermal application of profenofos. Parent compound was not detected in the experiment. In GC/MS, the mass spectral confirmation for 4-bromo-2-chlorophenol ion was identified at m/z 208.4-bromo-2-chlorophenol was excreted within 48 hours and 72 hours after oral administration and dermal application of profenofos, respectively. In this study, the same urinary metabolite of profenofos was detected both in oral and dermal exposure. Generally, excretion of the urinary metabolite after oral administration was detected faster than after dermal application. It is suggested that urinary 4-bromo-2-chlorophenol could be used as the biomarkers of exposure to profenofos.
An Identification of Enterobacter sp. Isolated from Contaminated Ginseng and Inhibition Effect of Ginseng Saponin on Its Growth
Journal of Food Hygiene and Safety, volume 17, issue 1, 2002, Pages 26~30
A bacterium isolated from contaminated white ginseng was indentified by using API kit and electron microscope. The isolate was determined as rod shaped bacterium having 0.6-1.0
in diameter and 1.2-3.0
in length. It had motility by flagellum. The isolate had
-galactosidase, arginine dihydrolase and omithin decarboxylase. It used citrate as sole carbon source but not produced H
S. It also fermented glucose, manitol, sorbitol, rhamnose, sucrose, melibiose, arabinose and amygdalin. The isolate was identified as Enterobacter sp by the above API kit analysis and electron microscopy observation. Ginseng saponin was added to culture of Enterobacter sp. in order to investigate saponin's influence on its growth. The strain was incubated at 38
for 3 days after addition of 0.05, 0.5, 2.0 and 4.0% (w/v) of saponin, respectively and the growth rates were investigated. The relative bacterial growth rates showed 75.0, 37.5, 7.5 and 0.5%, respectively, when compared with 100% of saponin non-added group. These results suggest that the growth of Enterobacter sp. is inhibited by saponin with the concentration dependency.
Prevalence of Staphylococcus aureus in Kimbap
Journal of Food Hygiene and Safety, volume 17, issue 1, 2002, Pages 31~35
According to food poisoning statistic data of 2000, the food poisoning outbreaks have occurred mainly by meat (27.9%), shellfish and its processed products (26.0%), and ready-to eat meals (24.0%) such as Kimbap and packed lunch boxes. The major causative flood poisoning bacteria were Salmonella spp. (35.6%), Staphylococcus aureus(11.3%) and Vibrio parahaemolyticus (3.2%). In this study, we conducted the isolation and enumeration for S. aureus in Kimbap. This monitoring data will be applied to the following study, risk assessment. The Kimbap samples were collected from department stores, convenient stores and snack bars located in Seoul, Busan, Daejeon, and Gwangju. The overall isolation rate of S. aureus from 214 Kimbap samples was 34.1% and the average count was 623 cells. Enterotoxin typing test for isolates showed 42.5%, 4.1% and 2.7% for type, A, B and C, respectively. There was no significant seasonal difference in S. aureus isolation, but the average count in summer(793 cfu/g) was 1.8 times higher than that of winter(446 cfu/g).
Antimicrobial Activity of GC-l00X against Major Food-Borne Pathogens and Detaching Effects of It against Escherichia coli O157:H7 on the surface of Tomatoes
Journal of Food Hygiene and Safety, volume 17, issue 1, 2002, Pages 36~44
GC-l00X is non-corrosive alkaline ionic water (pH 12). It is composed of hydroxyl radicals and supplemented with xylitol. Its antimicrobial activity was examined against 6 major food-borne pathogens; Staphylococcus aureus FRI 913, Salmonella enterica serova Enteritidis ATCC 13076, S. enterica serova Typhimurium Korean isolate, Vibrio parahaemolyticus ATCC 17803, Escherichia coli O157:H7 ATCC 43894 and Pseudomonas aeruginosa KCTC 1637 at three different temperatures (4
) with or without an organic material (2% yeast extract), respectively. The antimicrobial activities showed over 4 log-reductions (1.0
CFU/ml reduction) against all pathogens reacted at 37
for 3 hours in the absence of the organic material. The activities showed same results when GC-l00X was diluted with same volume of distilled water or standard hard water (CaCO
300 ppm). Its antimicrobial activity was more effective and quicker in Gram-negative bacteria than Gram-positive bacteria. Its washing efficacy against E. coli O157:H7 exposed to the surfaces of tomatoes (grapes) was compared with that of the other sanitizers such as other kitchen synthetic detergent and 100-ppm chlorine water. For the toxicological evaluation of the sanitizers, viable counts of E. coli O157:H7 penetrated into the core of tomatoes after washing products were also compared. The result revealed that GC-100X stock solution and its 5% diluted solution had similar washing effects to 100-ppm chlorine water and more effective than the other kitchen synthetic detergent. This result indicated that GC- l00X had antimicrobial activity and no toxicological side effects, therefore, could be useful for a new sanitizer to use in flood safety and kitchen hygiene.
A Awareness Survey of HACCP Implementation in the Korean Slaughterhouses
Journal of Food Hygiene and Safety, volume 17, issue 1, 2002, Pages 45~54
Hazard Analysis Critical Control Point System (HACCP) is recognized worldwide as a science-based and systematic approach for food safety. This has been initiated to establish the HACCP system in Korean slaughterhouses by suggesting some of effective implementation ways. An awareness level survey using questionnaire for 124 owners and 363 employees of the slaughterhouses, and 170 government officers responsible for HACCP duties was performed. This study shows that only 34.7% of owners, 21.1% of employees, and 57.1% of government officers have good understanding of HACCP, but 93.5%, 88.9% and 93.6% respectively have the willingness of HACCP implementation. Major benefits in HACCP implementation in the slaughterhouse raised by respondents were improvement of hygiene level of the plant (54.1%), increase of meat sale (17.6%), pride of the production of safe meat for human consumption (9.6%) and increase of meat export (7.5%), while major obstacles were financial difficulties (33.2%), poor levels of the facilities and equipments in the plants (27.3%), poor level of personal hygiene (19.4%), and lack of understanding of HACCP (12.3%). The most urgent measures which respondents raised to implement HACCP system effectively in the slaughterhouses at the moment were the Improvement of levels of facilities and equipments in the plants (36.6%), the establishment of HACCP base through education and training (19%), special benefits to HACCP implementing plant (11.8%), and close relationship between government and the industry (10.3%). The present study shows some of effective ways to implement HACCP in slaughterhouses.