• Title/Summary/Keyword: vegetable safety

Search Result 201, Processing Time 0.027 seconds

Survey of the Presence of Ochratoxin A in Compound Feeds and Feed Ingredients distributed in Korea (국내산 단미사료와 배합사료의 Ochratoxin A 오염도 조사)

  • Jang, Han-Sub;Kim, Dong-Ho;Lee, Kyung-Eun;Lee, Chan
    • Journal of Food Hygiene and Safety
    • /
    • v.22 no.4
    • /
    • pp.353-358
    • /
    • 2007
  • Contamination of ochratoxin A (OTA) was studied in 194 compound feeds and 59 feed ingredients samples distributed in South KOREA in 2006 and 2007. The degree of OTA contamination in feed ingredients was 27%, and its detected levels were ranged from 0.27 to 3.39 ppb. Seventy six percent of compound feeds were contaminated with OTA at concentration between 0.21 and 13.64 ppb. The highest degree of OTA contamination was observed in compound feeds for dairy cattle (96%) followed by for poultry (85%) and swine (79%). Beef cattle exhibited the highest level of OTA contamination (2.2 ppb). Compound feeds for dairy cattle and feed ingredients for vegetable proteins showed relative lower level of contamination at 1.6 and 1.2 ppb, respectively.

Effects of Biodiesel Fuel on Characteristics of Specific Fuel Consumption and Exhaust Emissions in DI Diesel Engine - Using Rape Oil - (직접분사식 디젤기관에서 연료소비율 및 배기배출물 특성에 미치는 바이오디젤유의 영향 - 유채유를 중심으로 -)

  • Lim, Jae-Keun;Choi, Soon-Youl;Kim, Suk-Joon;Cho, Sang-Gon
    • Journal of the Korean Society of Marine Environment & Safety
    • /
    • v.14 no.1
    • /
    • pp.83-87
    • /
    • 2008
  • We have a lot of interest in alternative fuels to provide energy independence from oil producing country and to reduce exhaust emissions for air pollution prevention. Biodiesel, which can be generated from natural renewable sources such as new or used vegetable oils or animal fats, may be used as fuel without change of engine structure in diesel engine of compression ignition engine. In this paper, the test results on specific fuel consumption and exhaust emissions of neat diesel oil and biodiesel blends(10 vol.% biodiesel and 20 vol.% biodiesel) were presented using four stroke, direct injection diesel engine. Especially this biodisel was produced from rape oil at our laboratory by ourselves. This study showed that specific fuel consumption and NOx emission were slightly increased, on the other hand CO emission and Soot were tolerably decreased more in the case of biodiesel blends than neat diesel oil.

  • PDF

The formation of N-Nitrosamine in commercial Cured products 1. Occurrence of N-Nitrosamine in commercial Ham and Sausage (시판 식육제품 중 N-Nitrosamine의 생성 제1보. 시판햄 및 소시지 중 N-Nitrosamine의 검출)

  • 박계란;이수정;신정혜;김정균;성낙주
    • Journal of Food Hygiene and Safety
    • /
    • v.13 no.4
    • /
    • pp.400-405
    • /
    • 1998
  • This experiment was conducted to study occurrence of N-nitrosamine (NA) and its precursors such as nitrate and nitrite. For the experimental samples, 26 kinds of commercial hams and 30 kinds of sausages produced in Korea were purchased. The nitrate and nitrite were positive in all of the collected samples; nitrate levels were by average 4.4~9.2 mg/kg and nitrite ones were by average 1.3~3.6 mg/kg. The contents of nitrate and nitrite were detected higher in sausage than in ham. Especially, nitrate contents were contained higher in lyoner sausage prepared with the mixture of meat and fish, while nitrite contents were contained higher in the meat only mixture. N-nitrosodimethylamine (NDMA) among the analyzed 7 kinds of NA was detected only in ham and sausage; its contents were outstanding in lyoner sausage which was prepared with only meat and pork sausage, and then regular ham was the next one in its order, but its contants were detected by average $<0.5\;\mu\textrm{g}/kg$ in press hams added vegetable.

  • PDF

Effect of Natural Plant Components on the Nitrite-scavenging (천연식물성분이 아질산염 소거에 미치는 영향)

  • 이수정;정미자;신정혜;성낙주
    • Journal of Food Hygiene and Safety
    • /
    • v.15 no.2
    • /
    • pp.88-94
    • /
    • 2000
  • The purpose of this presents is to investigate, using natural food extracts(Green tea; Camellia sinesis, Du'chung; Eucommia ulmoides Oliver, Eu sung cho; Houttuynia cordate Thunb, Sam back cho; Saurus Chinensis, Baek hwa sa seal oho; Oldenladia diffusa Roxb., Laver; Porphyra tenera, Sea mustard; Undaria pinnatifda and Sea staghorn; Condium fragile) and juices(Sweet pepper; Capsicum annuum var. angulosum, Kale; Brassia oleracea var. acephala, Cucumber; Cucumis sativus, Onion; Allium cepa, Tomato; Lycopericon esculentum, Maesil; Prunus mume, Plum; Prunus salicina and Grape; Vitis spp.), the effect of natural plant components on the nitrite-scavenging under the different levels of pH. From the above mentioned extracts and juices, the content of vitamin C was detected, containing 65.1∼77.1 mg/100g, at the highest level in the Green tea, and followed by vegetables and fruits in order. The nitrite scavenging effect of teas, medicinal plants, and seaweed extracts, in the reaction system under the condition of pH 1.2, were 57.0∼100%, 50.0∼100%, and 18.0∼99.0%, respectively. Especially, the nitrite was scavenged to the level of 100%1 when 10 ml of kale and 5 ml of maesil Juice

  • PDF

Monitoring of Unregistered Pesticides Contaminated in the Domestic Crops Grown under Good Agricultural Practices (국내 농산물우수관리인증 농산물의 미등록농약 오염 실태 조사)

  • Kim, Jun-Sung;Oh, Deog-Hwan
    • Journal of Food Hygiene and Safety
    • /
    • v.32 no.4
    • /
    • pp.275-283
    • /
    • 2017
  • We inspected contaminations of pesticides in the 3,313 crop samples grown under the standard of Korean Good Agricultural Practices (GAP) between 2014 to 2016 May. According to our inspection, violations by unregistered pesticide contaminations far outweighed those by exceeding maximum residue limits. Most of the crops contaminated with unregistered pesticides were minor vegetable crops, for which far less pesticide products are registered compared to cereal grains and fruits. And in our second study, the pesticide in the sprayer was removed 90% or more, but not totally by serial rinses. From this result, it is assumed that pesticide remained in the rinsed sprayer can be carried over to crops unintentionally. Our study shows that supplying pesticide products evenly to all kinds of crops and allowing unintentional carry-over of unregistered pesticides to a certain extent are solutions to revitalize depressed Korean Good Agricultural Practices.

Occurrence and antibiotic resistance of Enterococcus spp. from retail fresh-cut products in Korea (국내 신선 편이식품으로부터 분리한 Enterococcus의 항생제 저항성)

  • Kim, Hyun Jung;Kim, Seung Min
    • Korean Journal of Food Science and Technology
    • /
    • v.50 no.6
    • /
    • pp.581-586
    • /
    • 2018
  • Enterococcus spp. have been considered major indicator organisms for antibiotic resistance due to their ability to easily acquire and to harbor antibiotic resistance. In this study, Enterococcus spp. were isolated from 174 retail fresh-cut products (fresh vegetable salads, microgreens, and sprouts) in Korea. Among the 20 Enterococcus isolates obtained, 18 (90.0%) were Enterococcus faecalis and 2 (10.0%) were Enterococcus faecium. The patterns of antibiotic resistance against nine antimicrobials were analyzed. Most of the isolates (85.0%) were resistant to quinupristin/dalfopristin, 40.0% and 50.0% of the isolates showed intermediate resistance to two critically important antimicrobials for human medicine, ciprofloxacin and erythromycin, respectively. Vancomycin-resistant enterococci were not detected in this study. Given the importance of antimicrobial resistance of enterococci in food safety as well as in public health, our results regarding the occurrence (level of contamination) and antimicrobial resistance of Enterococcus spp. could provide useful information that aids the risk analysis of antibiotic resistance.

Evaluation of Microbial Contamination in Leek and Leek Cultivated Soil in Korea (부추와 부추 재배 토양의 미생물 오염도 조사)

  • Yang, SuIn;Seo, Seung-Mi;Roh, Eunjung;Ryu, Jae-Gee;Ryu, Kyoung-Yul;Jung, Kyu-Seok
    • Journal of Food Hygiene and Safety
    • /
    • v.34 no.6
    • /
    • pp.534-541
    • /
    • 2019
  • his study assessed microbial contamination of leeks and leek-cultivated soil. Leeks and leek-cultivated soil were collected in A and B regions and accounted for 39 and 33 samples, respectively. All of the samples were analyzed for the presence of sanitary indicator bacteria (total aerobic bacteria, coliforms and Escherichia coli), Salmonella spp., E. coli O157:H7, Listeria monocytogenes, and Bacillus cereus. In A and B region, the total aerobic bacteria was in the range of 5.87-8.78 log CFU/g for leeks and 5.94-8.45 log CFU/g for leek-cultivated soil. The coliform in leeks and leek-cultivated soil was in the range of 1.20-7.36 log CFU/g and 2.45-5.87 log CFU/g, respectively. B. cereus was detected from some of the samples while other pathogens were not detected. This study provides important background information on the microbiological safety of fresh vegetable cultivation environments.

Microbiological Quality of Agricultural Water in Jeollabuk-do and the Population Changes of Pathogenic Escherichia Coli O157:H7 in Agricultural Water Depending on Temperature and Water Quality (전라북도 지역 농업용수의 미생물학적 특성 및 온도와 수질에 따른 농업용수의 병원성대장균 O157:H7 밀도 변화)

  • Hwang, Injun;Ham, Hyeonheui;Park, Daesoo;Chae, Hyobeen;Kim, Se-Ri;Kim, Hwang-Yong;Kim, Hyun Ju;Kim, Won-Il
    • Korean Journal of Environmental Agriculture
    • /
    • v.38 no.4
    • /
    • pp.254-261
    • /
    • 2019
  • BACKGROUND: Agricultural water is known to be one of the major routes in bacterial contamination of fresh vegetable. However, there is a lack of fundamental data on the microbial safety of agricultural water in Korea. METHODS AND RESULTS: We investigated the density of indicator bacteria in the surface water samples from 31 sites collected in April, July, and October 2018, while the groundwater samples were collected from 20 sites within Jeollabuk-do in April and July 2018. In surface water, the mean density of coliform, fecal coliform, and Escherichia coli was 2.7±0.55, 1.9±0.71, and 1.4±0.58 log CFU/100 mL, respectively, showing the highest bacterial density in July. For groundwater, the mean density of coliform, fecal coliform, and E. coli was 1.9±0.58, 1.4±0.37, and 1.0±0.33 log CFU/ 100mL, respectively, showing no significant difference between sampling time. The survival of E. coli O157:H7 were prolonged in water with higher organic matter contents such as total nitrogen (TN), and nitrate-nitrogen (NO3-N). The reduction rates of E. coli O157:H7 in the water showed greater in order of 25, 35, 5, and 15℃. CONCLUSION: These results can be utilized as fundamental data for prediction the microbiological contamination of agricultural water and the development of microbial prevention technology.

Distribution of Foodborne Pathogens from Garlic Chives and Its Production Environments in the Southern Part of Korea (남부지방 부추와 재배환경의 식품매개병원균의 분포)

  • Jung, Jieun;Oh, Kwang Kyo;Seo, Seung-Mi;Yang, SuIn;Jung, Kyu-Seok;Roh, Eunjung;Ryu, Jae-Gee
    • Journal of Food Hygiene and Safety
    • /
    • v.35 no.5
    • /
    • pp.477-488
    • /
    • 2020
  • Recently, foodborne illness outbreaks linked to fresh produce are being increasingly reported in the United States, the EU, and Korea as well. Some of this increase may be due to improved surveillance, increase in consumption, change in consumers' habits, and complex distribution systems. Garlic chive is a green, fresh-cut vegetable consumed year-round as a nutrition-rich herb in Korea. It is also prone to contamination with foodborne pathogens during pre-harvest, as amendment with high amounts of livestock manure or compost to soil is required in its cultivation. Our aim in this study was to evaluate microbial contamination of garlic chives, garlic chives cultivation soil, compost, and irrigation water in the southern part of Korea. Samples were collected in A, B, and C regions in 2019 and 2020, and 69, 72, 27, and 40 of garlic chives, soil, compost, and irrigated water, respectively, were analyzed for the presence of sanitary indicator bacteria (total aerobic bacteria, coliforms and Escherichia coli), Bacillus cereus, Staphylococcus aureus, pathogenic E. coli, E. coli O157:H7, Listeria monocytogenes, and Salmonella spp. In A, B, and C regions, levels of total aerobic bacteria, coliform, B. cereus, and S. aureus on all samples were between 1.14 and 8.83 log CFU/g, 0.43 and 5.01 log CFU/g, 0.41 and 5.55 log CFU/g, and 1.81 and 6.27 log CFU/g, respectively. B. cereus isolated from garlic chives and environmental samples showed β-hemolysis activity. Incidence of S. aureus in garlic chive and its production environments in 2020 was different from 2019. In this study, B. cereus and S. aureus were the only pathogenic microorganisms detected in all samples. As a result, this work suggests that continuous monitoring in the production and pre-harvest environment is required to improve hthe hygiene and safety of garlic chive.

Comparative Evaluation of Washing Methods of Chinese Cabbages for Eliminating the Parasite Eggs in the Preparing Kimchi (김치 제조시 기생충란 제거를 위한 배추 세척방법의 비교평가)

  • Choi, In-Uk;Youn, Young-Nam;Yu, Yong-Man;Choi, Min-Ho;Lee, Young-Ha
    • Journal of Food Hygiene and Safety
    • /
    • v.22 no.3
    • /
    • pp.192-198
    • /
    • 2007
  • Kimchi is one of the representative traditional foods in Korea, which is recognized as a kind of wellbeing foodstuffs. However, as increasing foreign-made Kimchi, its safety as food is at the forefront of public health concerns. We analyzed the washing methods of Chinese cabbages, which are the main materials in Kimchi, to prevent parasite contamination during preparing it. To decontaminate parasite eggs from Chinese cabbages, discard the discolored outer leaves from cabbages, spread the space of leaves with fingers and rinse more than 3 separate water tanks with streaming water (velocity more than 0.8m/sec). At each tank, Chinese cabbages were rinsed with more than 3 strokes upward and downward within the streaming water followed by moving back and forth more than 3 times, with 20cm in height and 30cm in width, respectively. Decontamination efficiency increased higher in parallel with streaming velocity of water, and with adding the vegetable detergent to the tank water.