• Title/Summary/Keyword: microbe control

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Effects of Surface Treatment with Polyethylene Film on Shelf-life of Packaged Kimchi (포장김치의 저장성에 미치는 폴리에틸렌 필름의 표면처리 효과)

  • 이명예;김미경;김순동
    • Food Science and Preservation
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    • v.10 no.2
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    • pp.136-141
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    • 2003
  • This they was conducted to investigate the surface treated effect of Packaged kimchi on the PH, acidity, total microbe, number of lactic acid bacteria, browning and formation of off-flavor during storage at 10$^{\circ}C$. Kimchi was treated with 70% ethanol(1 time spraying) and attachment of polyethylene film(PE) on the surface of packaged kimchi and stored at 10$^{\circ}C$. pH of the control and ethanol treated kimchi stored for 15 days was decreased to 4.0 level but, the pH of PE-treated kimchi maintained over pH 4.0 until 21 days of storage. The aridity was the same tendency as the pH, which showed delaying of fermentation by PE treatment. Total microbe of PE treated kimchi was lower and number of lactic acid bacteria was higher than those of control and ethanol treated products, respectively. Degree of browning and off-flavor of control and ethanol treated kimchi increased from 13 days of storage, but the degrees of the PE-treated kimchi was lower during all storage periods.

Analysis of Health-related Microbes by Capillary Electrophoresis

  • Moon, Byoung-Geoun;Kim, Yong-Seong
    • Bulletin of the Korean Chemical Society
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    • v.24 no.8
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    • pp.1203-1206
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    • 2003
  • Analysis of health-related microbes called probiotics was performed by capillary electrophoresis. A rapid and easy characterization for two important probiotics, Saccharomyces cerevisiae and Enterococcus feacalis, was obtained in the running buffer containing poly(ethylene oxide). Quantitation of probiotic (Saccharomyces cerevisiae) shows a good linearity between the peak area versus the concentration of microbe. From the comparison of electropherograms of antidiarrhea, it was found that capillary electrophoresis could be employed for the quality control and quality assurance for the production of a medicine containing the probiotics.

Growth of Creeping Bentgrass by Application of Compound Fertilizer Containing Microbes (미생물 함유 복합비료 시비에 따른 크리핑 벤트그래스의 생육)

  • Kim, Young-Sun;Lee, Chang-Eun;Ham, Soun-Kyu;Lee, Geung-Joo
    • Weed & Turfgrass Science
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    • v.5 no.1
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    • pp.42-50
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    • 2016
  • Superintendents have been used microbial fertilizers to improve turfgrass growth and quality and to decrease turfgrass diseases in golf course. This study was conducted to investigate the effects of compound fertilizer containing microbe (MF) on the growth and quality of creeping bentgrass with turf color index (TCI), chlorophyll index (ChI), root length, turfgrass density, clipping yield and nutrient content. Treatments were designed as follows; non-fertilizer (NF), compound fertilizer (21-17-17; CF) as control, compound fertilizer (14-6-17) containing microbe. In pot experiment, TCI and ChI of creeping bentgrass in MF plot were similar to those in CF. But clipping dry weight of MF plot increased by 39.1% compared to that of CF plot. At field experiment applied with MF treatment, TCI, ChI, root length, and nutrient content and uptake of creeping bentgrass were similar to those with CF treatment, but turfgrass density with MF higher about 7.9-15.8% than with CF. These results indicated that the application of MF improved growth and quality of creeping bentgrass by enhancing clipping yield and shoot number.

Effect of Initial Temperature of Salt Solution during Salting on the Fermentation of Kimchi (배추의 소금절임시 염수의 초기온도가 김치숙성에 미치는 영향)

  • 박인경;김순희;김순동
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.25 no.5
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    • pp.747-753
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    • 1996
  • This study was undertaken to enhance the shelf-fife of kimchi by heat treatment at $40~80^{\circ}C$ for Chinese cabbage during salting. Kimchi was analyzed to determine pH, titratable acidity and sensory evaluation, number of microbe and lactic acid bacteria, content of organic acid and texture. The kimchi(HT 40-kimhi) soaked with Chinese cabbage by heat treatment at $40^{\circ}C$ was enhanced the shelf-life more than that of control kimchi when evaluated by pH, titratable acidity, sour taste and overall taste. HT 40-kimchi was higher in hardness and the lowest in brittleness and gumminess and also, the content of lactic acid, number of total microbe and lactic acid bacteria were the lower than those of control kimchi. Considering all results obtained throughout these experiments, it can be concluded that the kimchi soaked with Chinese cabbage salted in heated 10% salt solution at $40^{\circ}C$ improved the quality and shelf-life of kimchi.

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Antifungal Properties of Streptomyces bacillaris S8 for Biological Control Applications

  • Da-Ran Kim;Chang-Wook Jeon;Youn-Sig Kwak
    • The Plant Pathology Journal
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    • v.40 no.3
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    • pp.322-328
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    • 2024
  • Soybean (Glycine max), a crucial global crop, experiences yearly yield reduction due to diseases such as anthracnose (Colletotrichum truncatum) and root rot (Fusarium spp.). The use of fungicides, which have traditionally been employed to control these phytopathogens, is now facing challenges due to the emergence of fungicide-resistant strains. Streptomyces bacillaris S8 strain S8 is previously known to produce valinomycin t through a nonribosomal peptide synthetase (NRPS) pathway. The objective of this study was to evaluate the antifungal activity of S. bacillaris S8 against C. truncatum and Fusarium sp., assessing its efficacy against soybean pathogens. The results indicate that strain S8 effectively controlled both above-ground and underground soybean diseases, using the NRPS and NRPS-related compound, suggesting its potential as a biological control in plant-microbe interactions. These findings underscore the pivotal role of the stain S8 in fostering healthy soybean microbial communities and emphasize the significance of microbiota structure studies in unveiling potent biocontrol agents.

Effects of Oyster Shell Lime on Barley Growth and Soil Microbe in an Upland Soil (패화석이 보리생육과 토양 미생물상에 미치는 영향)

  • Lee, Young-Han;Sonn, Yeon-Kyu;Lee, Seong-Tae;Heo, Jae-Young;Kim, Min-Keun;Kim, Eun-Seok;Song, Won-Doo;Kim, Dae-Ho;Ok, Yong-Sik
    • Korean Journal of Soil Science and Fertilizer
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    • v.45 no.4
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    • pp.610-613
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    • 2012
  • Oyster shell has a high content of $CaCO_3$ to be used as a acidic soil amendment. To enhance productivity of barley and soil microbe in an upland soil, oyster shell and calcium-magnesium carbonate were selected as a soil amendments in this study. A field experiment was treated no treatment (hereafter, control), oyster shell lime $3.09Mg\;ha^{-1}$ and $2.38Mg\;ha^{-1}$, and calcium-magnesium carbonate $2.38Mg\;ha^{-1}$ as amount of lime requirement in silt loam soil. The yield of barley from the oyster shell lime treatment was the highest. The protein content of barley was the highest of 11.1% in the calcium-magnesium carbonate, followed by 10.7% for the control, 10.6% for the oyster shell lime $3.09Mg\;ha^{-1}$, and 10.4% for the oyster shell lime $2.38Mg\;ha^{-1}$. Soil pH value was higher than that of control in harvesting stage. In addition, the population of soil bacteria was highest in oyster shell lime $2.38Mg\;ha^{-1}$, actinomycetes was highest in calcium-magnesium $2.38Mg\;ha^{-1}$. We concluded that the oyster shell lime can be effective to restore soil nutrient and microbe balance in an upland soil.

Fermentative Properties of Taurine added Kimchi (타우린을 첨가한 김치의 발효 특성)

  • Kim Mi-Sook;Jeong Yoon-Hwa
    • Journal of the East Asian Society of Dietary Life
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    • v.14 no.5
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    • pp.438-442
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    • 2004
  • This study was conducted to investigate the chemical and microbiological properties of taurine added Kimchi during fermentation at 20℃. A control group was salted with 10% brine solution, and a taurine group was salted with 10% brine solution including 5 % taurine and was divided into two groups depending on added taurine concentration after brining; 0% taurine (Taurine I) and 3 % taurine added (Taurine II). The pH of Kimchi was markedly decreased over time in all groups and there was no significant difference between groups. Total acidity was the highest in Taurine II followed by Taurine I and. control group during five days of fermentation. The number of total microbe and lactic acid bacteria showed increase similarly in all groups.

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Status of Infection Control in Jeju-area General Hospitals (제주특별자치도 종합병원의 감염관리 현황)

  • Chong, Moo Sang;Lee, Kyutaeg
    • Korean Journal of Clinical Laboratory Science
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    • v.48 no.2
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    • pp.130-136
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    • 2016
  • The aim of this study was to examine and analyze the infection management status of Jeju-area general hospitals, and in order to convey the importance of infection management, and to determine role plans of medical technologists as infection management staff, the infection management status was examined through surveys targeting 7 general hospitals located in Jeju Special Self-Governing Province. The infection management of Jeju-area medical institutions showed excellence in that all institutions operated an infection management room, there was dedicated manpower, and hospital infection management guidelines were established and executed. However most institutions were operating their infection management room with only 1 nurse, reporting many difficulties in securing dedicated manpower, microbe-related culture deciphering, frequency of multiple-resistance bacteria, infection statistics, and details on microbe testing. Accordingly, it is believed that the medical technologist who can perform the practical tasks of infection management has sufficient qualification and experience in infection management as per the medical law enforcement regulations, and in operation of an infection management room. If medical technologists (infection control microbiological technologist) with expert knowledge on microbes and infection control nurses can execute the tasks as dedicated personnel, the operation of the infection management room will be more advanced. In addition, for proper infection management in the future, the introduction of a medical system specialized in infection management and full support for infection management of vulnerable small/medium hospitals in addition to general hospitals across the country is considered important.

Development of Temperature Control System for Cold Storage Room Using Fuzzy Logic (퍼지논리를 이용한 저온저장고의 온도제어시스템 개발)

  • 양길모;고학균;조성인
    • Journal of Biosystems Engineering
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    • v.25 no.2
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    • pp.107-114
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    • 2000
  • Low temperature storage method is to increase the value of agricultural products by reducing quality loss and regulate consignment time by controlling respiration rates of agricultural products. Respiration rate of agricultural products depends on several factors such as temperature, moisture, gas composition and a microbe inside the storage room. Temperature is the most important factor among these, which affects respiration rate and causes low or high temperature damage. Fuzzy logic was used to control the temperature of a storage room ,which uses information of uncertain facts and mathematical model for room temperature control . Room temperature was controlled better by using fuzzy logic control method rather than on-off control method. Refrigerant flow rates and temperature deviations were measured for on-off system using TEV(temperature expansion valve) and for fuzzy system using EEV(Electrical Expansion Valve) . Temperature of the Storage room was lowered faster by using fuzzy system than on -off system. Temperature deviation was -0.6~+0.9$^{\circ}C$ for on-off system and $\pm$0.2$^{\circ}C$ for fuzzy system developed. Temperature deviation and variation of temperature deviation were used as inout parameters for fuzzy system. The most suitable input and output value were found by experiment. Cooling rate of the storage room decreased while temperature deviation increased for the sampling time of 20 sec.

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