• 제목/요약/키워드: microbiological activity

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파라벤류의 방부력에 대한 화장품용 안료의 영향 (Effects of Cosmetic Pigments on the Bactericidal Activities of Parabens)

  • 조완구;이용화;황승진
    • 한국응용과학기술학회지
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    • 제27권4호
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    • pp.501-507
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    • 2010

  • In this study, we evaluate the anti-microbiological activity of paraben in eye shadows that are composed of pigments and oil binders using various analytical methods and microbiological tests. Paraben does not show the microbiological activity properly when it was used with Nylon SP$^{(R)}$ 10, Talc RF SSA$^{(R)}$, OMC Talc AS$^{(R)}$ and $BaSO_4$. In the test of fungi, Nylon SP$^{(R)}$ 10 causes the decrease of microbiological activity regardless of the type of oil binders. The pigment of Mango violet also causes the decrease of microbiological activity when ester oil binder was used. Regardless of the type of oil binder, samples containing nylon SP 10, 0.15% of methyl paraben and 0.05% of propyl paraben had not been able to maintain microbiological activity only if the concentration of parabens were increased. Trace amounts of metal ions present in pigments reduced the activity of preservatives by inactivation of hydroxyl group of paraben. It is thought that swollen nylon SP 10 in ester oil increase the absorption or interaction of parabens and swollen nylon powder causes the inactivation of paraben.

  • https://doi.org/10.12925/jkocs.2010.27.4.16 인용 PDF KSCI

청년기 치주염 진전의 임상적, 미생물학적, 생화학적 및 면역학적 연구 (CLINICAL, MICROBIOLOGICAL, BIOCHEMICAL AND IMMUNOLOGICAL STUDY ON THE PROGRESSION OF ADOLESCENT PERIODONTITIS)

  • 이주연;김성조;최점일
    • Journal of Periodontal and Implant Science
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    • 제25권3호
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    • pp.648-658
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    • 1995

  • The present study has been performed to evaluate the clinical, microbiological, biochemical and immunological parameters associated with the periodontal disease activity in adolescent periodontitis. 21 young adolescents with evidences of periodontal attachment loss participated in the study for upto 3 years of examination. Probing pocket depths and attachment levels of whole dentitions were annually recorded and 4 deepest pockets, with initial probing depth ${\geq}$ 4mm, were selected as the representative experimental sites of a patient. Sites experiencing attachment loss ${\geq}$ 1mm during the 3-year experimental period were designated as the active sites and these sites were examined for the microbiological and biochemical profiles at the time when attachment loss occurred. Microbiological assay included cultural studies and PerioScan for monitoring BANA(+) organisms(e.g. Porphyromonas gingivalis, Treponema denticola, Bacteriodes forsythus). Biochemical assay has been performed for monitoring GCF levels of neutral protease. Serum IgG and IgG2 titers against Porphyromonas gingivalis 381 were determined of a patients at the beginning and the end of the study, respectively for patient-based analysis. The results indicated that the parameters consisting of microbiological cultures and GCF neutral protease exhibited low association with the periodontal disease activity in adolescents. However, the specificity for microbiological culture of the selected periodontopathic organisms(Aa,Pg,Pi) were considerably high. Moreover, the clinical pameters such as bleeding on probing and presence of plaque as well as IgG levels against Pg at the baseline exminations were closely associated with the subsequent evidences of attachment loss during the whole experimental period(3-year).

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