• 한국염색가공학회지
• /
• 제15권6호
• /
• pp.27-32
• /
• 2003

As a natural antimicrobial agent, gallnut extract was examined. The extract was separated and analyzed by LC/MS to assign the components, gallic acid, digallic acid, trigallic acid, mono-galloyl glucose, penta-galloyl glucose, etc. Minimum inhibitory concentration of gallnut extract was about 10ppm. Cotton fabrics treated with 10% owf of gallnut extracts had antimicrobial activity showing the reduction of bacteria 99.9% for both Staphylococcus aureus and Klebsiella pneumoniae.

• 한국염색가공학회지
• /
• 제15권6호
• /
• pp.47-54
• /
• 2003

To be dyed with cationic Berberine, the cotton fiber was modified with reactive anionic agent. The Berberine, a natural cationic colorant of pure yellow, is the major component of Amur Cork tree extract and also can be employed as a natural antimicrobial agent due to its characteristic of cationic quaternary ammonium salt. By LC/MS analysis, it became obvious that the Berberine was contained in Amur Cork tree extract as a major color component. The adsorption of the Berberine on the cotton fabrics pretreated with the anionic agent was greatly increased comparing to that of untreated fabric. Because the anionic agent was colorless, it did not cause unintended color change of the dyeings. The dyed fabric with the Berberine has strong antimicrobial activity showing 99.5% of reduction of bacteria against Staphylococcu aureus.

• 한국식품조리과학회지
• /
• 제14권1호
• /
• pp.114-118
• /
• 1998

In ordo. to develop the natural food preservative agent, freeze dried dandelion (Taraxcum platycarpum) was extracted with several solvents, and antimicrobial activity was investigated. The methanol extract obtained from the dandelion exhibited antimicrobial properties against five strains such as Bacillus subtilis, Escherichia coli, Staphylococcus aureus, Listeria monocytogenes, and Vibrio parahaemolyticus. The methanol extract at the concentration of 2000 $\mu\textrm{g}$/ml completely inhibited the growth of B. subtilis, E. coli, L. monocytogenes and V. parahaemolyticus. Antimicrobial activity of the ethylacetate fraction from the methanol extract of dandelion was the strongest fraction compare to those the other solvent fractions such as n-hexane, chloroform, n-butanol and water. The ethylacetate fraction showed the inhibitory effect at the concentration of 0.5 mg/disc on the growth of the food spoilage microorganisms.

• 한국식품위생안전성학회지
• /
• 제7권2호
• /
• pp.99-106
• /
• 1992

To prevent food-poisoning outbreaks by Vibrio vulnificus the antimicrobial efficacy of grapefruit seed extract (GFSE) was examined. Minimal inhibitory concentration (in vitro) for the microorganism was found to be 50∼100 ppm. Transmission electron micrographs of Vibrio vulnificus showed the biocidal action of this natural antimicrobial agent would be related to specific respiratory effect coupled with the destruction of permeable function of microbial cell membrane. After Anguilla japonica GFSE-injected to the body was incubated in the seawater contaminated by Vibrio vulnifiucs the fish meats were taken up, mixed with control diet and used as a diet in the feeding experiment. In this experiment the effect of GFSE treated with fish muscle on body weight, protein efficiency ratio, serum enzymes and serum blood components of broiler chicks was investigated. It is proved from this study that there is neither Vibriosis nor toxicity associated with GFSE itself an fish meats treated with it when it is injected to the fish body at a level of 250 ppm or less.

• 자연과학논문집
• /
• 제11권1호
• /
• pp.159-164
• /
• 1999

유기실리콘 제4급 암모늄염을 이용하여 타올에 향균제를 처리하였을 때의 향균성에 가장 많은 영향을 미치는 처리농도, 시간, 온도에 대한 향균성 변화를 비교 조사하였고, 향균처리 후 물성변화, 내세탁성을 측정하였다. 타올의 향균성에 가장 우수한 향균성을 나타내고 많은 영향을 미치는 처리농도는 3.5%이며, 처리온도 $30^{\circ}C$에서, 처리시간 10분간 향균가공 처리하여도 균감소율이 95% 이상 향균성능을 유지함을 알 수 있었다. 또한 세탁 횟수에 따른 균 감소율은 20회까지 세탁하여도 80%이상 높은 향균성을 나타내었고, 향균제 가공처리 후 측정한 타올의 인장강도 및 신도는 큰 변화가 없었다.

• 한국미생물·생명공학회지
• /
• 제39권1호
• /
• pp.1-8
• /
• 2011

The antimicrobial effects of silver (Ag) ion or salts are well known. Recently, silver nanoparticle is attracting an interest in a wide variety of fields since it has been known to be safe and effective as an antimicrobial agent against a broad spectrum of microorganisms. Although silver nanoparticle has been applied to various kinds of products owing to its potent antimicrobial activity, the effects of silver nanoparticle on microorganisms and antimicrobial mechanism have not been revealed clearly. In this paper, we summarized the characteristics, antimicrobial activities and mechanisms, cytotoxicity and applicability of silver nanoparticle.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2013년도 추계 학술논문 발표대회
• /
• pp.52-53
• /
• 2013

According to the increases the standard of living of the people, requirements for building environments are also being diversified. The fungus that occurred the building is not good the health of occupants as well as undermine the value of the building. However, chemical antimicrobial agent contain ingredients harmful to human body and it has an impact on indoor air quality. Therefore, the use of natural antimicrobial material is strongly required. In this study, the fungal reproductive inhibit capacity was evaluated by using mortars with natural antimicrobial material.

• 한국식품저장유통학회지
• /
• 제11권1호
• /
• pp.17-21
• /
• 2004

본 실험에서는 식품의 미생물작용에 의한 변질의 저해 효과가 뛰어난 식물성천연항균제품(botanical antimicrobial agent)에 천연보조제(인삼추출물, 알로에, 매실추출물)를 첨가하여 paper disk법에 의한 항균성 검사를 실시한 결과, 인삼추출물을 첨가한 천연복합항균제재(BAAG)에서 생육저해환이 가장 크고 뚜렷하게 나타났다. 한편, 천연 항균복합제재 용액에 콩나물용 콩을 농도별로 각각 침지 처리하여 냉장 및 상온에 저장하면서 대장균수, 총균수의 변화를 살펴보고, 외관상의 변화에 미치는 영향을 수도수로 침지처리한 대조구와 비교하면서 조사하였다. 실험 결과, 대장균은 BAAG의 침지처리에 의해 성장이 억제되었으며 처리농도가 증가시킬수록 균증식 억제 효과가 뚜렷하였고, 총균수도 BAAG 처리구의 콩나물이 가장 낮은 수치를 나타내었다. 외관상의 변화와 상품 가치를 측정한 결과는 수도수처리구인 대조구 콩나물이 저장 3일 후부터 부패취와 함께 표피의 점질성 갈변이 형성되어 상품가치가 크게 떨어진 상태였다. 위와 같은 결과, BAAG용액 속에서 콩나물 콩을 발아시켜 침지 처리함으로써 콩나물의 유통기간을 상당기간 연장할 수 있을 것으로 기대된다.

• 한국응용과학기술학회지
• /
• 제30권1호
• /
• pp.96-115
• /
• 2013

본 연구는 항균성 코팅제의 개념과 동향파악으로 항균성 코팅제의 연구개발의 방향을 설정하는데 도움을 주기 위한 것이다. 항균제는 미생물을 제거하거나 성장을 저지하는데 사용되는 화합물이며 항균 코팅제에 함유되는 항균제용 재료는 무기물, 금속, 저분자 유기물, 천연유기물, 고분자가 있다. 항균코팅제는 생활용품, 병원용품, 산업용품, 전자제품, 의류, 건축 내장재 등의 표면의 항균성 부여에 쓰인다. 기존 항생제는 세균의 세포벽을 손상하지 않고 미생물을 침투하나 항균성 고분자는 세포막을 파괴하므로 항생제의 내성을 방지할 수 있다. 대부분의 고분자 항균제는 양이온 고분자에 초점을 맞추고 있다. 항균제의 분자설계와 코팅제 배합의 합리화로 항균제의 선택성, 내구성, 독성 문제가 개선될 것이다.

• 한국염색가공학회:학술대회논문집
• /
• 한국염색가공학회 2007년도 추계학술발표회
• /
• pp.57-58
• /
• 2007