• Title/Summary/Keyword: bacteriological

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Bacteriological Survey for Food/Food Contacting Surfaces in Large Grocery Stores in Korea

  • Park Mi-Yeon
    • Fisheries and Aquatic Sciences
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    • v.7 no.2
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    • pp.64-69
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    • 2004
  • A bacteriological survey for 20 large grocery stores (M 1 to M20) in Korea was investigated for one year. The average detection rate of Esherichia coli was $22\%$ (166/763) for 7 kinds of ready-to-eat food through the year, where each grocery store and each type of food showed different detection rates. Eleven grocery stores showed lower detection rates, while 9 grocery stores showed a higher than average rate. Especially, M3 showed a rate that was twice as high as the average and one which was 7 times higher than M14, which had the lowest rate of $6\%$ E. coli detection. The detection rate for each type of food was: $38\%$ (41/109) for Kimbop, $31\%$ (34/109) for vegetable salad, $19\%$ (21/109) for bean-curd, $18\%$ (20/109) for the cooked materials used in making Kimbop, $17\%$ (19/109) for Hoe (sliced raw fish) and Sushi (Japanese vinegared rice delicacies), and $11\%$ (12/109) for cooked pork hock. During the summer, the E. coli detection rate averaged $43\%$ (71/166), which was twice as high as other seasons. Most (89/100) of the food contacting surfaces contained more than the critical limit $(1.3\;log_{10}\;CFU/10cm^2)$ of aerobic viable cell counts (AVC). The $log_{10}$ AVC and $log_{10}$ coliform count (CC) of 218 meat samples (beef, pork, and chicken) ranged between 4.6-7.1 CFU/g and 1.9-6.4 CFU/g, except for 41 meat samples $(19\%)$ which were found to contain no coliform. There was a definite correlation between the $log_{10}$ AVC and $log_{10}$ CC, and the values of $log_{10}$ CC made a more accurate straight than the $log_{10}$ AVC, which are variable. From these results, it is suggested that a detection rating of less than 2.1 CFU/g of $log_{10}$ CC (correspond to 5.0 CFU/g of $log_{10}$ AVC) is the critical point of freshness, and a rating of more than 6.3 CFU/g of $log_{10}$ CC (correspond to 7.0 CFU/g of $log_{10}$ AVC) can be considered an initial spoilage point.

SSOP Program Development for HACCP Application in Fresh Raw Fish Manufacturing (싱싱회류 생산업체의 HACCP 적용을 지원하기 위한 SSOP Program 개발과 성과)

  • 박완희;이성학;정덕화
    • Journal of Food Hygiene and Safety
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    • v.19 no.2
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    • pp.84-96
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    • 2004
  • This study aims at developing an easily-applicable Sanitation Standard Operating Procedure(SSOP) program for Fresh raw-fish manufacturing. It compares the sanitation inspection results of SSOP-program-applied procedure and non-applied procedure. The samplings for bacteriological examination were collected from the touching surface of food and from the personal workers. The sanitation status was recorded in the check-up list. The results were statistically analyzed to ascertain the efficiency of the SSOP program. The present official KFDA check-up list for sanitation inspection is composed of 51 items. Each item is judged to be fit or unfit to the standards. When the unfit items are more than 6, the work-place is judged to be insanitary. But in this study, the results of sanitation inspection are scaled in points in the 70% allotment, and the results of bacteriological examination are scaled in points in 30%, totaling 100%. Below 60 scores are judged to be insanitary and administratively punished; 61-75 scores are judged to be average; 76-85 good; above 86 excellent. The sanitation inspection scores by the improved check-up list went up by two grades from 71.8 (before SSOP program) to 88.6 (after SSOP program). The results of bacteriological examination also improved from 57.5 to 98.2. The total scores of both results converted in the allotment of 70% and 30% also showed an improvement by two grades from 66.4 (before SSOP program) to 93.4 (after SSOP program). The above results show that the manufacturers participated in this study are following the 8 essential sanitary procedures which are needed to anchor the HACCP system.

Impact of Pollution Sources on the Bacteriological Water Quality in the Yongnam-Gwangdo Shellfish Growing Area of Western Jinhae Bay, Korea (진해만 서부 용남·광도해역의 세균학적 수질에 미치는 육상 오염원의 영향)

  • Shim, Kil Bo;Ha, Kwang Soo;Yoo, Hyun Duk;Lee, Tae Seek;Kim, Ji Hoe
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.45 no.6
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    • pp.561-569
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    • 2012
  • To evaluate the bacteriological water quality in Yongnam-Gwangdo, located in western Jinhae Bay, seawater samples were analyzed using sanitary indicator bacteria at 57 sampling stations. According to survey results from January 2007 to December 2009, the range of the geometric mean and the estimated 90th percentile for coliforms and fecal coliforms in the samples were <1.8-16.5 and 1.8-246.8 MPN/100 mL and <1.8-7.1 and 1.8-74.8 MPN/100 mL, respectively. The samples, including those taken from stations located in Wonmunman, Gwangdo, and Dangdong, showed high levels of microbial contamination caused by the climate and weather patterns in the marine environment. The bacteriological water quality in the area met Korean criteria for a designated shellfish growing area for export and National Shellfish Sanitation Program criteria for an approved shellfish growing area, except at station #49. A total of 24 direct pollution sources were discharged into the shellfish growing area. The radius of impact was calculated for each pollution source to assess the effect on the shellfish growing area. The calculated radius of impact for most of the pollution sources was below 300 m. However, the radius of impact for the combined pollution sources in Kyeonnaeryang was 93-1973 m. There were significant differences between the calculated closed sea area and actual monitoring results. The closed sea area values calculated from the fecal coliform load in drainage water tended to be higher than the actual monitoring results. Tidal currents and environmental factors such as salinity, water temperature, sunlight, and microbiological factors affect the survival of fecal indicator bacteria in seawater.

Evaluation of the Influence of Inland Pollution Sources on Shellfish Growing Areas after Rainfall Events in Geoje Bay, Korea (강우에 따른 거제만해역 육상오염원의 영향평가)

  • Ha, Kwang-Soo;Yoo, Hyun-Duk;Shim, Kil-Bo;Kim, Ji-Hoe;Lee, Tae-Seek;Kim, Poong-Ho;Ju, Ja-Yeon;Lee, Hee-Jung
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.44 no.6
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    • pp.612-621
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    • 2011
  • The influences of inland pollution sources because of rainfall events on the bacteriological water quality in Geoje Bay, a major shellfish production area in Korea, were investigated. The sanitary status of sea water and shellfish after rainfall events was also evaluated. The flow rates of 13 streams around Geoje Bay showed 6 to 7-fold increases after 15 to 21 mm of rainfall. Peak pollution was observed in the Naegan Stream, the Gandeok Stream and the Seojeong Stream. The calculated impact area of inland pollution sources was 3.1 $km^2$ immediately after 15 mm of rainfall and expanded to 3.5 $km^2$ after 24 hours. These calculations of impacted area matched results from fecal coliform analyses with sea water. The distance between the major pollution source in the bay (the Gandeok Stream) and the station with the worst bacteriological water quality immediately after 15 mm of rainfall, which was below the Korean standard, was 0.8 km in a straight line; this distance increased to 2.0 km after a period of 24 hours. The area impacted by inland pollution sources after a 15 mm rainfall event was wider than after a 21 mm rainfall. Although the flow rate from inland pollution sources was higher, the concentration of fecal coliform in the discharged water was lower after higher rainfall events. These observations corresponded with the results of fecal coliform analyses with sea water samples. According to the evaluation of the influences of inland pollution sources and fecal coliform analyses on sea water and shellfish samples in Geoje Bay, pollutants from inland sources did not reach the boundary line of the shellfish growing area after rainfall events of 15 or 22 mm. The bacteriological water quality of the shellfish growing area in Geoje Bay met the Korean standard and US NSSP requirements for approved shellfish growing areas.

Pysicochemical and Bacteriological Properties of Yogurt made by Single or Mixed Cultures of L. bulgaricus and S. thermophilus (L. bulgaricus 와 S. thermophilus 의 단독 및 혼합배양에 의한 요구르트의 이화학적 미생물학적 특성)

  • Lee, Shin-Ho;Koo, Young-Jo;Shin, Dong-Hwa
    • Korean Journal of Food Science and Technology
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    • v.20 no.2
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    • pp.140-147
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    • 1988
  • The pysicochemical and bacteriological properties of yogurts made by single or mixed cultures of L. bulgaricus FRI025 and S. thermophilus CHI were investigated. L. bulgaricus FRI025 which was isolated from raw milk was selected as starter culture among 22 strains of lactic culture by measuring viscosity, flavor, growth and acid production ability. The acid production and number of viable cell were increased by using L. bulgaricus FRI025 and S. thermophilus CHI together in ratio of apporximately 1:1. The pH, titratable acidity, viable cell number and viscosity of yogurt were 4.08, 1.14%, $2.5{\times}10^{10}/ml$ and 2100 cp after 9 hours incubation at $40^{\circ}C$, respectively. The pH and viable cell number were decreased on the other hand titratable acidity and viscosity were increased after 7 days of storage at $4^{\circ}C$. The changes of quality did not show significantly after storage. The selected starter was much higher than commercial yogurt starter in the acid production and growth of starter. The yogurt nanufactured with selected starter was better than with commercial yogurt in sensory evalution such as taste, texture, flavor and overall acceptability.

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The Study on Safety of Scolopendrid Aqua-acupuncture (오공약침(蜈蚣藥鍼)의 안전성(安全性)에 관한 연구(硏究))

  • Lim, Seung-Il;Kim, Sung-Nam;So, Ki-Suk;Choi, Hoi-Kang;Lim, Jeong-A;Lee, Sang-Kwan;Moon, Hyung-Cheol;Soh, Kyung-Sun;Kim, Sung-Chul
    • Journal of Pharmacopuncture
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    • v.7 no.1 s.12
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    • pp.37-51
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    • 2004
  • Objective : Recently scolopendrid aqua-acupuncture has been a good effect on pain control but it has not been known about clinical safety. The purpose of this study was to investigate acute toxicity of scolopendrid aqua-acupuncture. Method : In order to prove the clinical safety of scolopendrid aqua-acupuncture, We have observed a bacteriological examination and clinical pathology test after scolopendrid aqua-acupuncture treatment. Balb/c mice were injected intravenous with Scolopendrid aquaacupuncture treatment for $LD_{50}$ and acute toxicity test. We analyzed physical reaction(side effect)and clinical pathology test before and after Scolopendrid aqua-acupuncture treatment of mice and 20 patients suffering from pain, who admitted department of Acupunture and Moxibustion, College of Oriental Medicine, Won-Kwang University Kwangju hospital. Results : In the Blood agar plate and Nutrient agar plate, a bacteriological examination did not show a bacillus. In acute $LD_{50}$ toxicity test, there was no mortality thus unable to attain the value. Examining the toxic response in the acute toxicity test, there was no sign of toxication. In acute toxic test, running biochemical serum test couldn't yield any differences between the control and experiment groups. In the 20 patients treated with Scolopendrid aqua-acupuncture, hematologic test did not show remarkable change. In the 20 patients treated with Scolopendrid aqua-acupuncture, Liver function test(AST, ALT, ALP) showed a slight decrease on the contrary, and abnormal rate showed a decrease of 5.0% compared with previous study. Reanl function test(BUN, Cr) and abnormal rate showed a decrease of 5.0% compared with previous study. In the 20 patients treated with Scolopendrid aqua-acupuncture, Electrolyte were normal range before and after treatment. In the Urine analysis of 20 patients, Leukocyte, Protein, Glucose, Keton, Bilirubin, U-bilinogen were not detected before and after Scolopendrid aqua-acupuncture treatment, and the rest almost made no difference.

Bacteriological Characteristics of Unidentified Vibrio sp., Hemolysin Producer Isolated from Brackish Water -2. Bacteriological Characteristics of Vibrio sp. E10 Similar to Vibrio mimicus- (기수에서 분리된 용혈독소를 생산하는 미분류 Vibrio sp.의 세균학적 특징 -2. Vibrio mimicus와 유사한 Vibrio sp. E10의 세균학적 특성-)

  • Kim Young Man;Yu Hong Sik;Oh Hee Kyung
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.35 no.6
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    • pp.545-550
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    • 2002
  • A hemolysin producing bacterial strain which belong to Vibrio species was isolated from the Kum River estuary. In the process of identification, the strain did not show characteristics of known Vibrio species; thus, the strain was designated as Vibrio sp, E10 (V. kunsan) tentatively and further identification study was carried out by comparing its bacteriological characteristics. Morphologically Vibrio sp, E10 was comma shaped rod with a polar flagellium. Clear hemolysis zones were observed with the strain against human and sheep blood agar. Hemollytic toxicity was confirmed by strong vascular Permeability and fatal toxicity against mouse was also observed. Therefore the strain was a pathogenic vibrio. Growth conditions for Vibrio sp. E10 were ranged salinity of 0$\~$$4.5\%$, pH of 6.2$\~$9.2, temperature of 14$\~$42$^{\circ}C$, respectively, 16S rDNA partial sequence of Vibrio sp, E10 showed $99\%$ homology with dozens of V. cholerae species including V, cholerae El Tor N16961 and V, snmisnfus ATCC 33653T. This strain belonged to Proteobacteria; gamma subdivision; Vibrionacea: Vibrio. But, among knorn Vibrio species no identical styains were found when using automatic bacteria identification system ($MicroLog^{TM}$system, release 4.0, Biolog Inc., USA) which evaluated the ability of metabolizing 95 kinds of carbon and nitrogen sources. Vibrio sp, E10 showed 18 and 11 different responses as compared to V. mimicus and V, cholerae, respectively.

A Price System of Raw Milk for Increasing Competitive Power of Korean Dairy Industry (낙농 산업 경쟁력 제고를 위한 원유 가격 제도 개선 방향)

  • Jang, Jong-Geun
    • Journal of Dairy Science and Biotechnology
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    • v.24 no.1
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    • pp.43-51
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    • 2006
  • Producer prices of raw milk include following elements: a basic price, payment according to fat content, payment according to bacteriological quality and somatic cell count. The quality of raw milk has increased since last change of payment system according somatic cell count. But last change of payment system according to fat content is not effective. It is necessary to widen the range of equal price by fat content. Also it is necessary to include payment according to protein content.

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Immunotherapy of Tuberculosis (결핵의 면역요법)

  • Kwon, Dong-Won
    • Tuberculosis and Respiratory Diseases
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    • v.39 no.3
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    • pp.209-218
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    • 1992
  • Despite the availability of drugs effective in producing a bacteriological cure, tuberculosis presents continuing problems in its control, especially in the developing world. An effective immunotherapy to be used with chemotherapy is urgently required. Intradermal injection of a suspenison of killed Mycobacterium vaccae switches off the tissue-necrotizing component of the Koch phenomenon, and promotes cell-mediated responses to the common, putative protective, mycobacterial antigens. These properties led to the empolyment of the suspension in immunotherapy as an adjunct to chemotherapy in the treatment of both tuberculosis and leprosy. The evidence leading to these conclusions is reviewed.

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